{"id":10479,"date":"2026-07-07T00:00:28","date_gmt":"2026-07-07T00:00:28","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10479"},"modified":"2026-07-07T07:05:54","modified_gmt":"2026-07-07T07:05:54","slug":"1173-vs-907-vs-tpo-l","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/it\/1173-vs-907-vs-tpo-l\/","title":{"rendered":"1173 vs 907 vs TPO-L: How to Choose for Clear Varnishes, Light-Colored Inks, and Easier Mixing"},"content":{"rendered":"

Risposta rapida:<\/strong> Buyers comparing Fotoiniziatore 1173<\/a>, Fotoiniziatore 907<\/a>e Photoinitiator TPO-L<\/a> usually get the clearest shortlist when they separate appearance sensitivity<\/strong>, pigment burden<\/strong>e handling preference<\/strong> first. 1173<\/strong> is often the clean first look when the job centers on clear varnishes, paper or plastic overprint work, and a liquid benchmark with slight yellowing<\/strong>. 907<\/strong> moves forward when the real pressure is white or light-colored coatings and inks that still need pigment tolerance and low yellowing<\/strong>. TPO-L<\/strong> becomes the stronger first screen when the team wants a liquid route with easier mixing plus stronger white-system and deeper-cure relevance<\/strong>.<\/p>\n

That is the practical commercial split. These three products can all appear in coatings and ink discussions, but they solve different first-screen buying problems.<\/p>\n

Why this comparison matters<\/h2>\n

Longchang already has broader comparison pages around 184 vs 1173 vs TPO-L<\/a> e 907 vs BMS vs TPO-L<\/a>. This page is narrower and more commercially specific. It is for buyers choosing between a liquid clear-varnish benchmark<\/strong>, a low-yellowing route for white or light-colored systems<\/strong>, and a liquid wider-window route for deeper cure and easier handling<\/strong>.<\/p>\n

That makes the page useful for clear varnishes, light-colored decorative inks, overprint varnishes, and appearance-sensitive coatings where both yellowing control and production convenience matter.<\/p>\n

Quick comparison table: 1173 vs 907 vs TPO-L<\/h2>\n\n\n\n\n\n\n\n
Prodotto<\/th>\nMiglior primo adattamento<\/th>\nPerch\u00e9 gli acquirenti lo selezionano<\/th>\nQuando non \u00e8 la prima opzione<\/th>\n<\/tr>\n<\/thead>\n
Fotoiniziatore 1173<\/a><\/td>\nClear varnishes, paper varnishes, and acrylic UV systems where slight yellowing matters<\/td>\nLongchang positions 1173 as a multifunctional liquid photoinitiator for acrylic UV-curable varnishes on paper, metal, and plastic surfaces, especially where only slight yellowing is acceptable even after long sunlight exposure<\/td>\nWhen the project is strongly white or pigmented and needs a stronger white-system or deeper-cure screen than a clear-varnish benchmark<\/td>\n<\/tr>\n
Fotoiniziatore 907<\/a><\/td>\nWhite or light-colored coatings and inks with strict color requirements<\/td>\nLongchang positions 907 around rapid initiation in the 250 to 390 nm range, low yellowing, and good compatibility with pigmented systems, making it commercially useful for white paints, light-colored systems, and colored inks<\/td>\nWhen the team wants a liquid photoinitiator for easier metering or needs a wider-window deep-cure liquid route<\/td>\n<\/tr>\n
Photoinitiator TPO-L<\/a><\/td>\nWhite or pigmented systems where liquid handling and deeper cure both matter<\/td>\nLongchang positions TPO-L as a liquid photoinitiator with low yellowing, low odor, a relatively wide absorption range, and direct relevance to white deep-layer systems across coatings, inks, and adhesives<\/td>\nWhen the job is mainly a straightforward clear-varnish program that does not need deeper-cure pressure or the wider-window liquid route<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

When 1173 is the better fit<\/h2>\n

1173 deserves the first sample slot when the job is driven by clear-system appearance<\/strong> and the formulator wants a liquid benchmark that blends easily<\/strong>.<\/p>\n