{"id":5871,"date":"2023-01-27T14:45:46","date_gmt":"2023-01-27T14:45:46","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5871"},"modified":"2026-04-28T10:42:14","modified_gmt":"2026-04-28T10:42:14","slug":"solve-the-pcb-circuit-board-photoresist-white-oil-yellowing","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/de\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/","title":{"rendered":"Wie kann man die Vergilbung des Fotolacks auf der Leiterplatte beheben?"},"content":{"rendered":"<h1><strong>Wie kann man die Vergilbung des Fotolacks auf der Leiterplatte beheben?<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> Photoinitiator choice is usually driven by lamp match, cure depth, yellowing, and whether the final film still performs on the real substrate. The best package is rarely the cheapest single grade.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>Leiterplatte Photoresist Wei\u00df\u00f6l geh\u00f6rt zu den Leiterplatten Photoresist Tinte, und Photoresist Tinte hat viele gemeinsame Punkte, sind von Harz, Monomer, Initiator, Verd\u00fcnner, F\u00fcllstoff, Farbpulver, Zusatzstoffe, der Hauptunterschied ist in der Verwendung von verschiedenen Rohstoffen reflektiert, ist dieser Artikel aus dem Harz, Initiator, Farbpulver und Zusatzstoffe, um die Ursachen der Photoresist Wei\u00df\u00f6l Vergilbung zu analysieren und die Methode zu verbessern.<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>I. Harz<\/strong><\/h2>\n<p>Die erste Diskussion ist das Harz, es ist bekannt, dass das Harz das Skelett der Tinte ist wesentlich f\u00fcr die Photoresist Wei\u00df\u00f6l Harz ist besonders wichtig, Photoresist Tinte (wie gr\u00fcnes \u00d6l, schwarzes \u00d6l, blaues \u00d6l) in das Harz mehr als o-Kresol Novolac Epoxidharz oder Bisphenol A Epoxidharz aus der ersten Pfropf Acryls\u00e4ure modifiziert, um eine fotografische Gruppe Doppelbindung einzuf\u00fchren, und dann Pfropf Anhydrid, um Alkali-Entwickler-Gruppe Carboxylgruppe einzuf\u00fchren. Das Harz dieser Struktur hat eine Benzolringstruktur, und die Benzolringstruktur ist leicht freie Radikale in UV-Strahlung zu produzieren und erzeugen ein konjugiertes System mit Farbe-emittierenden Gruppen, und schlie\u00dflich ist es leicht zu vergilben.<\/p>\n<p>Diese Struktur des Harzes aus Photoresist Wei\u00df\u00f6l Vergilbung ist schwerwiegender, im Grunde kann nicht den Bed\u00fcrfnissen der Kunden, so dass die aktuelle Photoresist Wei\u00df\u00f6l mit dem Harz ist meist Acrylharz, in der Regel mit einer Epoxy-Gruppe von Acrylat-Copolymer, dann Pfropfen Acryls\u00e4ure, um eine fotografische Gruppe Doppelbindung, und schlie\u00dflich Pfropfen Anhydrid, um Alkali-Entwickler-Gruppe Carboxyl-Gruppe.<\/p>\n<p>Diese Acryl-Struktur der Alkali-Entwickler-Harz ist aufgrund der aliphatischen Acryl-Epoxidharz, ultraviolettes Licht oder hohe Temperatur ist nicht leicht zu produzieren f\u00e4rbende Gruppen, feste Anti-Vergilbung Wirkung mehr ausgezeichnet werden.<\/p>\n<h2><strong>2. der Initiator<\/strong><\/h2>\n<p>Da dieses Papier diskutiert die Photoresist Wei\u00df\u00f6l, ist das System nat\u00fcrlich weniger Fotoinitiatoren. Fotolack Tinte System Initiator ist meist Isopropylthioanthron (ITX), 2-Methyl-1-(4-methylthiophenyl)-2-morpholin-1-propanon (907), 2-Benzyl-2-dimethylamino-1-(4-morpholinophenyl) butanone (369), dieser Initiator System photoinitiating Aktivit\u00e4t ist sehr hoch, im Grunde kann die Verwendung der meisten Fotolack Tinte erf\u00fcllen, aber solche Initiatoren Das gemeinsame Merkmal ist, dass diese Initiatoren enthalten Schwefel, Stickstoff und andere Heteroatome, nach ultravioletter Strahlung ist auch leicht zu produzieren Chromophore und Vergilbung, so dass diese Initiator-System ist nicht geeignet f\u00fcr die Verwendung von Photoresist Wei\u00df\u00f6l.<\/p>\n<p>Photoresist Wei\u00df\u00f6l wird derzeit mehr Initiator-System ist nicht leicht zu produzieren Vergilbung Produkte, wie 1-Hydroxycyclohexylphenylketon (HCPK), 2,4,6-Trimethylbenzoyl-Diphenyl-Phosphin-Oxid (TPO), Phenyl bis (2,4,6-Trimethylbenzoyl) Phosphinoxid (819), vor allem TPO, ist es ein freies Radikal Fotoinitiator, geeignet f\u00fcr niedrige Vergilbung und wei\u00dfes System, mit photobleaching Wirkung.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 435.77pt;\" border=\"0\" width=\"581\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt; width: 215.25pt;\" width=\"287\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-tpo-cas-75980-60-8\/\"><span style=\"color: #00ccff;\">Fotoinitiator TPO<\/span><\/a><\/td>\n<td style=\"width: 220.50pt;\" width=\"294\">CAS 75980-60-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/cas-270586-78-2\/\"><span style=\"color: #00ccff;\">Fotoinitiator TMO<\/span><\/a><\/td>\n<td>CAS 270586-78-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-pd-01-cas-579-07-7\/\"><span style=\"color: #00ccff;\">Fotoinitiator PD-01<\/span><\/a><\/td>\n<td>CAS 579-07-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-pbz-cas-2128-93-0\/\"><span style=\"color: #00ccff;\">Photoinitiator PBZ<\/span><\/a><\/td>\n<td>CAS 2128-93-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-oxe-02-cas-478556-66-0\/\"><span style=\"color: #00ccff;\">Fotoinitiator OXE-02<\/span><\/a><\/td>\n<td>CAS 478556-66-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-ombb\/\"><span style=\"color: #00ccff;\">Photoinitiator OMBB<\/span><\/a><\/td>\n<td>CAS 606-28-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-mpbz-6012\/\"><span style=\"color: #00ccff;\">Photoinitiator MPBZ (6012)<\/span><\/a><\/td>\n<td>CAS 86428-83-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-mbp-cas-134-84-9\/\"><span style=\"color: #00ccff;\">Fotoinitiator MBP<\/span><\/a><\/td>\n<td>CAS-NR. 134-84-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-mbf-cas-15206-55-0\/\"><span style=\"color: #00ccff;\">Fotoinitiator MBF<\/span><\/a><\/td>\n<td>CAS 15206-55-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-lap-cas-85073-19-4\/\"><span style=\"color: #00ccff;\">Fotoinitiator LAP<\/span><\/a><\/td>\n<td>CAS 85073-19-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-itx-cas-5495-84-1\/\"><span style=\"color: #00ccff;\">Fotoinitiator ITX<\/span><\/a><\/td>\n<td>CAS 5495-84-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-emk\/\"><span style=\"color: #00ccff;\">Photoinitiator EMK<\/span><\/a><\/td>\n<td>CAS 90-93-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-eha-cas-21245-02-3\/\"><span style=\"color: #00ccff;\">Photoinitiator EHA<\/span><\/a><\/td>\n<td>CAS 21245-02-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-edb-cas-10287-53-3\/\"><span style=\"color: #00ccff;\">Fotoinitiator EDB<\/span><\/a><\/td>\n<td>CAS 10287-53-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-detx-cas-82799-44-8\/\"><span style=\"color: #00ccff;\">Fotoinitiator DETX<\/span><\/a><\/td>\n<td>CAS 82799-44-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-cq\/\"><span style=\"color: #00ccff;\">Photoinitiator CQ \/ Campherchinon<\/span><\/a><\/td>\n<td>CAS 10373-78-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-cbp-cas-134-85-0\/\"><span style=\"color: #00ccff;\">Fotoinitiator CBP<\/span><\/a><\/td>\n<td>CAS-NR. 134-85-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\">Photoinitiator BP \/ Benzophenon<\/span><\/a><\/td>\n<td>CAS 119-61-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-bms\/\"><span style=\"color: #00ccff;\">Fotoinitiator BMS<\/span><\/a><\/td>\n<td>CAS 83846-85-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-938\/\"><span style=\"color: #00ccff;\">Photoinitiator 938<\/span><\/a><\/td>\n<td>CAS 61358-25-6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-937-cas-71786-70-4\/\"><span style=\"color: #00ccff;\">Photoinitiator 937<\/span><\/a><\/td>\n<td>CAS 71786-70-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-819-dw\/\"><span style=\"color: #00ccff;\">Fotoinitiator 819 DW<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\"><span style=\"color: #00ccff;\">Photoinitiator 819<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-784-cas-125051-32-3\/\"><span style=\"color: #00ccff;\">Photoinitiator 784<\/span><\/a><\/td>\n<td>CAS 125051-32-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-754-cas-211510-16-6-442536-99-4\/\"><span style=\"color: #00ccff;\">Photoinitiator 754<\/span><\/a><\/td>\n<td>CAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-6993-cas-71449-78-0\/\"><span style=\"color: #00ccff;\">Photoinitiator 6993<\/span><\/a><\/td>\n<td>CAS 71449-78-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-6976\/\"><span style=\"color: #00ccff;\">Fotoinitiator 6976<\/span><\/a><\/td>\n<td>CAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-379-cas-119344-86-4\/\"><span style=\"color: #00ccff;\">Photoinitiator 379<\/span><\/a><\/td>\n<td>CAS 119344-86-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-369-cas-119313-12-1\/\"><span style=\"color: #00ccff;\">Photoinitiator 369<\/span><\/a><\/td>\n<td>CAS 119313-12-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-160\/\">Photoinitiator 160<\/a><\/span><\/td>\n<td>CAS 71868-15-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-1206\/\"><span style=\"color: #00ccff;\">Photoinitiator 1206<\/span><\/a><\/td>\n<td><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/product\/irgacure-1173-cas-7473-98-5\/\"><span style=\"color: #00ccff;\">Photoinitiator 1173<\/span><\/a><\/td>\n<td>CAS-NR. 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2><strong>Drei, Farbpulver<\/strong><\/h2>\n<p>Photoresist Tinte mit sehr wenig Farbpulver, in der Regel Phthalocyanin blau, Phthalocyanin gr\u00fcn und andere organische Farbpulver, die H\u00f6he der Zusatzstoff sind in der Regel in ein paar Teile pro Million bis ein paar Tausendstel, und Photoresist Wei\u00df\u00f6l mit Farbpulver ist haupts\u00e4chlich Titandioxid, der Inhalt ist in der Regel in 20-40%, der aktuelle Markt Mainstream-Titandioxid Anatas und Rutil, Anatas-Titandioxid in Lichtstreuung, Wei\u00dfgrad und Abdeckung sind besser, aber die Wetterbest\u00e4ndigkeit zu Poorer, w\u00e4hrend die Anatas-Titandioxid selbst auf das Polymer und die Nebenwirkungen der selbstkatalytischen Rissbildung Alterung; Rutil-Titandioxid wegen der Oberfl\u00e4chenbehandlung, so dass die Witterungsbest\u00e4ndigkeit ist besser, Photoresist Wei\u00df\u00f6l ist in eine Menge von Beleuchtungstafeln (z. B. Automobil-Licht-Panels, LED-Licht-Panels), langfristige Lichtexposition, die Witterungsbest\u00e4ndigkeit Anforderungen sind relativ hoch, so dass die bevorzugte Rutil-Titandioxid. Derzeit ist der Markt routinem\u00e4\u00dfig verwenden Titandioxid wie DuPont R706, R960, R103, Ishihara R680, etc.<\/p>\n<p>Dar\u00fcber hinaus Photoresist wei\u00dfes \u00d6l, um die Menschen f\u00fchlen sich mehr wei\u00dfe Wirkung, in der Regel f\u00fcgen Sie einige blau-Phase Farbpulver in das System, das traditionelle blau-Phase Phthalocyanin blau diese organischen blauen Pulver anf\u00e4llig f\u00fcr UV-Licht oder hohe Temperatur Alterung, in der Regel nicht verwendet werden; h\u00e4ufig verwendet wird Ultramarin, weil Ultramarin ist eine anorganische Substanz, nicht leicht zu l\u00f6sen bei hohen Temperaturen und nicht leicht zu knacken selbst Vergilbung, zus\u00e4tzlich zu Ultramarin kann Photoresist wei\u00dfes \u00d6l in das gelbe Licht zu beseitigen, um die Wirkung von wei\u00df. Die Wirkung von Wei\u00df.<\/p>\n<h2><strong>4. Zusatzstoffe<\/strong><\/h2>\n<p>Photoresist Wei\u00df\u00f6l-System mit dem Harz in hoher Temperatur oder langfristige UV-Strahlung wird Alterungsprozess, diese Alterung ist das Polymer Spaltung zu produzieren aktive Radikale fortgesetzt Reaktionsprozess, und dann Spaltung Alterung Vergilbung, so Photoresist Wei\u00df\u00f6l zus\u00e4tzlich zum Hinzuf\u00fcgen von Nivellierungsmittel, Dispergiermittel, Entsch\u00e4umer und andere allgemeine Zusatzstoffe, m\u00fcssen Sie die spezifischen Anti-Vergilbung Zusatzstoffe, die aktuelle Verwendung von Antioxidantien sind vor allem die folgenden drei .<\/p>\n<p>4.1 Amin-Antioxidationsmittel<\/p>\n<p>Amin Antioxidans Prinzip der Aktion ist zu verhindern oder zu hemmen, die Kette Initiierung Reaktion und Kette Wachstum Reaktion durch die Erfassung von Peroxy-Radikale, wodurch die freie Radikale Kettenreaktion zu verhindern, dass Oxidation, kurz gesagt, um die Anti-Aging-Effekt, wie p-Phenylendiamin, Phenothiazin, aber es ist leicht zu oxidieren und verf\u00e4rbt, in der Photoresist Wei\u00df\u00f6l ist nicht einfach hinzuzuf\u00fcgen.<\/p>\n<p>4.2 Phenolische Antioxidantien<\/p>\n<p>Bit-blockierende phenolische Antioxidantien sind phenolische Verbindungen mit r\u00e4umlich gehinderter Struktur, wie BASF Irganox 1010, Irganox 1076, Japan Sumitomo GA-80.<\/p>\n<p>Das Wirkprinzip der ortsgebundenen phenolischen Antioxidantien besteht haupts\u00e4chlich darin, die reaktiven freien Radikale abzufangen, um inaktive freie Radikale zu erzeugen, so dass die Kettenreaktion beendet wird; der Wirkmechanismus ist wie folgt.<\/p>\n<p>&nbsp;<\/p>\n<p>Diese Art von Antioxidationsmittel ist ein allgemeines Antioxidationsmittel f\u00fcr Fotolack-Wei\u00df\u00f6l, das im Allgemeinen nicht allein verwendet wird, und Hilfsantioxidationsmittel mit der besten Wirkung.<\/p>\n<p>4.3 Zus\u00e4tzliches Antioxidans<\/p>\n<p>Hilfs-Antioxidantien sind vor allem synergistisch mit Bit-blocking phenolischen Antioxidantien, diese Kategorie ist vor allem Phosphit-Ester und Thioester, ihre Rolle ist vor allem zu zerst\u00f6ren, die Polymer-Alterung durch Hydroperoxide erzeugt, und rechtzeitig zu stoppen, die Polymer-Selbst-Oxidation Prozess. Derzeit ist der Markt f\u00fcr diese Produkte sind vor allem Phosphit-Ester-Klasse drei [2,4-di-tert-Butylphenyl] Phosphit (allgemein bekannt als Antioxidans 168).<\/p>\n<p>Photoresist Wei\u00df\u00f6l ist in der Regel mit Bit resist Phenol Antioxidans und Hilfsmittel Antioxidans, der Markt hat mit dem Produkt, vor allem in Kunststoff-Hochtemperatur-Spritzguss, und die Anwendung von Photoresist Wei\u00df\u00f6l m\u00fcssen auch Gegenstand von experimentellen Ergebnissen.<\/p>\n<p>Bei der Entwicklung von Photoresist-Wei\u00df\u00f6l sollten Sie sich auf die oben genannten Punkte konzentrieren, auf die Auswahl und Abstimmung der Rohstoffe achten und schlie\u00dflich durch die Optimierung der Rezeptur schnell ein Photoresist-Wei\u00df\u00f6l mit ausgezeichneter Vergilbungsbest\u00e4ndigkeit entwickeln.<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>A practical selection route for photoinitiator-related projects<\/h2>\n<p>When technical buyers or formulators screen photoinitiators, the most useful decision frame is usually cure quality plus application fit: which package cures reliably, keeps appearance acceptable, and still works under the lamp, film thickness, and substrate conditions of the actual process.<\/p>\n<ul>\n<li><strong>Match the package to the lamp first:<\/strong> mercury lamps, UV LEDs, and visible-light systems can rank the same photoinitiators very differently.<\/li>\n<li><strong>Check depth cure and surface cure separately:<\/strong> a film that feels dry on top can still be weak underneath.<\/li>\n<li><strong>Balance yellowing with reactivity:<\/strong> the strongest deep-cure route is not always the best commercial choice if color or migration risk becomes unacceptable.<\/li>\n<li><strong>Use the final formula as the benchmark:<\/strong> pigment load, monomer package, and film thickness can all change the apparent ranking of the same initiator.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">CHLUMINIT 819<\/a>:<\/strong> Useful when a formulation needs stronger absorption and deeper cure support.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/irgacure-1173-cas-7473-98-5\/\">CHLUMINIT 1173<\/a>:<\/strong> A practical comparison point for classic short-wave UV initiation.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-itx-cas-5495-84-1\/\">CHLUMINIT ITX<\/a>:<\/strong> A useful long-wave support route in many printing-ink packages.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-cq\/\">CHLUMINIT CQ<\/a>:<\/strong> A direct reference for visible-light and color-sensitive curing discussions.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why are blended photoinitiator packages so common?<\/strong><br \/>Because one product may control yellowing or lamp fit well while another improves cure depth or line-speed performance, so the full package is often stronger than any single grade.<\/p>\n<p><strong>Should incomplete cure always be solved by adding more initiator?<\/strong><br \/>Not automatically. The real limitation may be the lamp, film thickness, pigment shading, or the rest of the reactive system rather than simple under-dosage.<\/p>\n<p><!-- lc-commercial-end --><\/p>\n<h2><strong><b>Kontaktieren Sie uns jetzt!<\/b><\/strong><\/h2>\n<h4><strong><b>Wenn Sie COA, MSDS oder TDS von UV-Photoinitiator ben\u00f6tigen, geben Sie bitte Ihre Kontaktinformationen in das untenstehende Formular ein. Wir werden Sie in der Regel innerhalb von 24 Stunden kontaktieren.<\/b><\/strong> Sie k\u00f6nnen mir auch eine E-Mail schicken <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #0000ff;\">info@longchangchemical.com<\/span><\/a> w\u00e4hrend der Gesch\u00e4ftszeiten ( 8:30 bis 18:00 Uhr UTC+8 Mo.~Sa. ) oder nutzen Sie den Live-Chat auf der Website, um eine schnelle Antwort zu erhalten.<\/h4>","protected":false},"excerpt":{"rendered":"<p>Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are composed of resin, monomer, initiator, diluent, filler, color<\/p>","protected":false},"author":1,"featured_media":4174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5871","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to solve the PCB circuit board photoresist white oil yellowing? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are compos...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/de\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to solve the PCB circuit board photoresist white oil yellowing? - Longchang Chemical\" \/>\n<meta property=\"og:description\" content=\"Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are compos...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/longchangchemical.com\/de\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\" \/>\n<meta property=\"og:site_name\" content=\"Longchang Chemical\" \/>\n<meta property=\"article:published_time\" content=\"2023-01-27T14:45:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-28T10:42:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Longchang Chemical\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\"},\"author\":{\"name\":\"Longchang Chemical\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e\"},\"headline\":\"How to solve the PCB circuit board photoresist white oil yellowing?\",\"datePublished\":\"2023-01-27T14:45:46+00:00\",\"dateModified\":\"2026-04-28T10:42:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\"},\"wordCount\":1567,\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg\",\"articleSection\":[\"Catalysts &amp; Chemical Auxiliary Agents\"],\"inLanguage\":\"de\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\",\"url\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\",\"name\":\"How to solve the PCB circuit board photoresist white oil yellowing? - Longchang Chemical\",\"isPartOf\":{\"@id\":\"https:\/\/longchangchemical.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg\",\"datePublished\":\"2023-01-27T14:45:46+00:00\",\"dateModified\":\"2026-04-28T10:42:14+00:00\",\"description\":\"Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are compos...\",\"breadcrumb\":{\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#breadcrumb\"},\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage\",\"url\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg\",\"contentUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg\",\"width\":600,\"height\":800,\"caption\":\"irgacure 819 Appearance\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/longchangchemical.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to solve the PCB circuit board photoresist white oil yellowing?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/longchangchemical.com\/#website\",\"url\":\"https:\/\/longchangchemical.com\/\",\"name\":\"Longchang Chemical\",\"description\":\"China chemical manufacturer \uff06 supplier\",\"publisher\":{\"@id\":\"https:\/\/longchangchemical.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/longchangchemical.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"de\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/longchangchemical.com\/#organization\",\"name\":\"Longchang Chemical\",\"url\":\"https:\/\/longchangchemical.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png\",\"contentUrl\":\"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png\",\"width\":512,\"height\":512,\"caption\":\"Longchang Chemical\"},\"image\":{\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e\",\"name\":\"Longchang Chemical\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"de\",\"@id\":\"https:\/\/longchangchemical.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g\",\"caption\":\"Longchang Chemical\"},\"sameAs\":[\"https:\/\/longchangchemical.com\"],\"url\":\"https:\/\/longchangchemical.com\/de\/author\/infolongchangchemical-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Wie kann man die Vergilbung des Fotolacks auf der Leiterplatte l\u00f6sen? - Longchang Chemisch","description":"Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are compos...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/longchangchemical.com\/de\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/","og_locale":"de_DE","og_type":"article","og_title":"How to solve the PCB circuit board photoresist white oil yellowing? - Longchang Chemical","og_description":"Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are compos...","og_url":"https:\/\/longchangchemical.com\/de\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/","og_site_name":"Longchang Chemical","article_published_time":"2023-01-27T14:45:46+00:00","article_modified_time":"2026-04-28T10:42:14+00:00","og_image":[{"width":600,"height":800,"url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg","type":"image\/jpeg"}],"author":"Longchang Chemical","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#article","isPartOf":{"@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/"},"author":{"name":"Longchang Chemical","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e"},"headline":"How to solve the PCB circuit board photoresist white oil yellowing?","datePublished":"2023-01-27T14:45:46+00:00","dateModified":"2026-04-28T10:42:14+00:00","mainEntityOfPage":{"@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/"},"wordCount":1567,"publisher":{"@id":"https:\/\/longchangchemical.com\/#organization"},"image":{"@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage"},"thumbnailUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg","articleSection":["Catalysts &amp; Chemical Auxiliary Agents"],"inLanguage":"de"},{"@type":"WebPage","@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/","url":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/","name":"Wie kann man die Vergilbung des Fotolacks auf der Leiterplatte l\u00f6sen? - Longchang Chemisch","isPartOf":{"@id":"https:\/\/longchangchemical.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage"},"image":{"@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage"},"thumbnailUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg","datePublished":"2023-01-27T14:45:46+00:00","dateModified":"2026-04-28T10:42:14+00:00","description":"Printed circuit board photoresist white oil belongs to the printed circuit board photoresist ink, and photoresist ink has many common points, are compos...","breadcrumb":{"@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/"]}]},{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#primaryimage","url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg","contentUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2021\/01\/Appearance-1.jpg","width":600,"height":800,"caption":"irgacure 819 Appearance"},{"@type":"BreadcrumbList","@id":"https:\/\/longchangchemical.com\/solve-the-pcb-circuit-board-photoresist-white-oil-yellowing\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/longchangchemical.com\/"},{"@type":"ListItem","position":2,"name":"How to solve the PCB circuit board photoresist white oil yellowing?"}]},{"@type":"WebSite","@id":"https:\/\/longchangchemical.com\/#website","url":"https:\/\/longchangchemical.com\/","name":"Longchang Chemical","description":"China Hersteller von Chemikalien \uff06 Lieferant","publisher":{"@id":"https:\/\/longchangchemical.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/longchangchemical.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":"Organization","@id":"https:\/\/longchangchemical.com\/#organization","name":"Longchang Chemical","url":"https:\/\/longchangchemical.com\/","logo":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/","url":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png","contentUrl":"https:\/\/longchangchemical.com\/wp-content\/uploads\/2020\/08\/cropped-longchang-logo.png","width":512,"height":512,"caption":"Longchang Chemical"},"image":{"@id":"https:\/\/longchangchemical.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/ecb1ad846136c6f1ca534b62978c6a8e","name":"Longchang Chemical","image":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/longchangchemical.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c1e84ee0759373263198c58e8f338f80?s=96&d=mm&r=g","caption":"Longchang Chemical"},"sameAs":["https:\/\/longchangchemical.com"],"url":"https:\/\/longchangchemical.com\/de\/author\/infolongchangchemical-com\/"}]}},"_links":{"self":[{"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/posts\/5871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/comments?post=5871"}],"version-history":[{"count":5,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/posts\/5871\/revisions"}],"predecessor-version":[{"id":9237,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/posts\/5871\/revisions\/9237"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/media\/4174"}],"wp:attachment":[{"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/media?parent=5871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/categories?post=5871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/longchangchemical.com\/de\/wp-json\/wp\/v2\/tags?post=5871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}