{"id":5669,"date":"2022-10-13T11:17:07","date_gmt":"2022-10-13T11:17:07","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5669"},"modified":"2024-12-18T02:33:43","modified_gmt":"2024-12-18T02:33:43","slug":"photoinitiator-bp-benzophenone-cas-119-61-9","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/hu\/photoinitiator-bp-benzophenone-cas-119-61-9\/","title":{"rendered":"BP \/ benzofenon CAS 119-61-9 fotoinici\u00e1tor"},"content":{"rendered":"<h1><strong>BP \/ benzofenon CAS 119-61-9 fotoinici\u00e1tor<\/strong><\/h1>\n<h2><strong>Bevezet\u00e9s<\/strong><\/h2>\n<p><a href=\"https:\/\/longchangchemical.com\/hu\/product\/sincure-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\"><strong>Benzofenon<\/strong><\/span><\/a> olyan vegyi anyag, amelynek szerkezet\u00e9ben egy karbonilcsoport \u00e9s egy hidroxilcsoport is van. K\u00e9miai k\u00e9plete (C6H5)2CO vagy Ph2CO. Feh\u00e9r sz\u00edn\u0171 \u00e9s szerves old\u00f3szerekben old\u00f3dik, szerves old\u00f3szerekben old\u00f3dik. A k\u00e9miai szint\u00e9zis sor\u00e1n a benzofenon n\u00e9lk\u00fcl\u00f6zhetetlen anyag, mivel az \u00f6sszes t\u00f6bbi diarilketon prekurzorak\u00e9nt haszn\u00e1lj\u00e1k.<\/p>\n<p>A benzofenon relat\u00edv s\u0171r\u0171s\u00e9ge 1,1146, t\u00f6r\u00e9smutat\u00f3ja 1,6077, olvad\u00e1spontja 47 \u00e9s 49 Celsius-fok k\u00f6z\u00f6tt van. A prizm\u00e1s benzofenon krist\u00e1lyok sz\u00edntelenek \u00e9s kellemes r\u00f3zsaillatot \u00e1rasztanak. A v\u00edzzel \u00e9s m\u00e1s szerves old\u00f3szerekkel, p\u00e9ld\u00e1ul kloroformmal ellent\u00e9tben \u00e9terben \u00e9s alkoholban old\u00f3dik. Szabadgy\u00f6k\u00f6s fotoinici\u00e1tor, \u00e9s a szabadgy\u00f6k\u00f6s UV-h\u0151kezel\u0151 rendszerekben tal\u00e1lja meg a legt\u00f6bb felhaszn\u00e1l\u00e1si ter\u00fcletet. Az ilyen rendszerek k\u00f6z\u00e9 tartoznak a ragaszt\u00f3k, tint\u00e1k \u00e9s bevonatok. A szerves pigmentek, gy\u00f3gyszerek, illatanyagok \u00e9s peszticidek el\u0151\u00e1ll\u00edt\u00e1sa sor\u00e1n a szabadgy\u00f6k\u00f6s fotoinici\u00e1torokat k\u00f6ztes term\u00e9kk\u00e9nt is haszn\u00e1lj\u00e1k. A gy\u00f3gyszeriparban els\u0151sorban a difenhidramin-hidroklorid \u00e9s a biciklikus piperidin-benztropin-hidrobr\u00f3mid el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra haszn\u00e1lj\u00e1k. Ez az anyag, amelyet gyakran haszn\u00e1lnak a szappanok \u00e9s parf\u00fcm\u00f6k \u00e9des, savanyk\u00e1s \u00edz\u00e9nek biztos\u00edt\u00e1s\u00e1ra, sztirolpolimeriz\u00e1ci\u00f3s inhibitor \u00e9s illatfix\u00e1l\u00f3. A t\u00e1rol\u00e1s \u00e9s a sz\u00e1ll\u00edt\u00e1s sor\u00e1n az \u00e1rucikkeket v\u00e9deni kell a napt\u00f3l, a h\u0151t\u0151l \u00e9s a nedvess\u00e9gt\u0151l, \u00e9s a h\u0151m\u00e9rs\u00e9klet nem haladhatja meg a 45 Celsius-fokot.<\/p>\n<p><strong>K\u00e9miai reakci\u00f3k\u00e9pess\u00e9g<\/strong><\/p>\n<ul>\n<li>A benzofenon nem l\u00e9p reakci\u00f3ba a v\u00edzzel.<\/li>\n<li>A benzofenon ritk\u00e1n l\u00e9p reakci\u00f3ba a k\u00f6z\u00f6ns\u00e9ges anyagokkal. N\u00e9h\u00e1ny m\u0171anyagot megt\u00e1madhat.<\/li>\n<li>A benzofenon rendk\u00edv\u00fcl stabil a sz\u00e1ll\u00edt\u00e1s sor\u00e1n.<\/li>\n<li>A benzofenon nem hat neutriliz\u00e1l\u00f3szerk\u00e9nt a savak \u00e9s mar\u00f3szerek sz\u00e1m\u00e1ra.<\/li>\n<li>A benzofenon jelenl\u00e9t\u00e9ben nincsenek relev\u00e1ns polimeriz\u00e1ci\u00f3s \u00e9s g\u00e1tl\u00f3 polimeriz\u00e1ci\u00f3s reakci\u00f3k.<\/li>\n<\/ul>\n<p><strong>Alapvet\u0151 le\u00edr\u00e1s<\/strong><\/p>\n<p>Feh\u00e9r sz\u00edn\u0171, vir\u00e1gillat\u00fa szil\u00e1rd anyag. V\u00edzbe helyezve lebeghet vagy s\u00fcllyedhet.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Expoz\u00edci\u00f3s k\u00e9pess\u00e9gek<\/strong><\/p>\n<p>A szerves vegy\u00fcletek szint\u00e9zis\u00e9ben val\u00f3 felhaszn\u00e1l\u00e1s\u00e1n k\u00edv\u00fcl a benzofenont a tint\u00e1k \u00e9s bevonatok UV-kem\u00e9ny\u00edt\u00e9s\u00e9n\u00e9l, k\u00f6ztes term\u00e9kk\u00e9nt, illatanyagok, arom\u00e1k \u00e9s szappanok aromafix\u00e1l\u00f3jak\u00e9nt, gy\u00f3gyszerek el\u0151\u00e1ll\u00edt\u00e1s\u00e1n\u00e1l \u00e9s rovar\u00f6l\u0151 szerek kifejleszt\u00e9s\u00e9n\u00e9l haszn\u00e1lj\u00e1k.<\/p>\n<p><strong>A benzofenon tiszt\u00edt\u00e1si technik\u00e1i<\/strong><\/p>\n<p>Biztons\u00e1gosan t\u00e1rolhat\u00f3 BaO vagy P<sub>2<\/sub>O<sub>5<\/sub>\u00a0miut\u00e1n MeOH-b\u00f3l, EtOH-b\u00f3l, ciklohex\u00e1nb\u00f3l vagy petr\u00f3leum\u00e9terb\u0151l kikrist\u00e1lyos\u00edtott\u00e1k, meleg leveg\u0151n megsz\u00e1r\u00edtott\u00e1k, majd t\u00e1rolt\u00e1k. Tov\u00e1bb\u00e1 z\u00f3naolvaszt\u00e1ssal \u00e9s szublim\u00e1l\u00e1ssal tiszt\u00edtj\u00e1k.<\/p>\n<p><strong>A benzofenon alkalmaz\u00e1sai<\/strong><\/p>\n<p><strong>A nyomdaiparban<\/strong><\/p>\n<p>A benzofenon egy fotoinici\u00e1tor, amely a nyomdaiparban UV (ultraibolya) kem\u00e9ny\u00edt\u0151 alkalmaz\u00e1sokban, p\u00e9ld\u00e1ul fest\u00e9kek, k\u00e9palkot\u00e1s \u00e9s \u00e1tl\u00e1tsz\u00f3 bevonatok eset\u00e9ben haszn\u00e1lhat\u00f3. Az illatanyagokat \u00e9s sz\u00edneket tartalmaz\u00f3 term\u00e9keket, p\u00e9ld\u00e1ul szappanokat \u00e9s parf\u00fcm\u00f6ket a benzofenon v\u00e9di az ultraibolya (UV) sug\u00e1rz\u00e1s k\u00e1ros hat\u00e1sait\u00f3l.<\/p>\n<p>A nyomdaipar sz\u00e9les k\u00f6rben haszn\u00e1lja a benzofenont, mint fotoinici\u00e1tort UV-kem\u00e9ny\u00edt\u0151 alkalmaz\u00e1sokhoz, p\u00e9ld\u00e1ul fest\u00e9kekhez, k\u00e9palkot\u00e1shoz \u00e9s \u00e1tl\u00e1tsz\u00f3 bevonatokhoz. Mivel UV-blokkol\u00f3k\u00e9nt m\u0171k\u00f6dik, megv\u00e9di a csomagol\u00f3 polimereket \u00e9s a benn\u00fck l\u00e9v\u0151 tartalmakat a nap k\u00e1ros hat\u00e1sait\u00f3l.<\/p>\n<p><strong>Napv\u00e9d\u0151 kr\u00e9mekk\u00e9nt<\/strong><\/p>\n<p>A kozmetikai piac leg\u00fajabb fejlem\u00e9nye a f\u00e9nyv\u00e9d\u0151 kozmetikumok. A mai f\u00e9nyv\u00e9d\u0151k szinte mindenhol tartalmazz\u00e1k a benzofenon nev\u0171 \u00f6sszetev\u0151t. A magasf\u00e9ny\u0171 term\u00e9keket gyakran olyan anyagok felhaszn\u00e1l\u00e1s\u00e1val \u00e1ll\u00edtj\u00e1k el\u0151, mint a benzofenon, amelyek v\u00e9dik a b\u0151rt a k\u00e1rosod\u00e1st\u00f3l. Az ut\u00f3bbi \u00e9vekben jelent\u0151sen megn\u0151tt a kozmetikumokban haszn\u00e1lt benzofenon mennyis\u00e9ge. A benzofenont ma m\u00e1r r\u00fazsokban, test\u00e1pol\u00f3kban \u00e9s hajbalzsamokban is haszn\u00e1lj\u00e1k, mivel egy nemr\u00e9giben v\u00e9gzett kutat\u00e1s meg\u00e1llap\u00edtotta, hogy a fluoreszk\u00e1l\u00e1s az UV-sug\u00e1rz\u00e1s k\u00e1ros forr\u00e1sa is. Emellett a parf\u00fcm\u00f6k r\u00f6gz\u00edt\u0151 \u00f6sszetev\u0151je, amelyet sz\u00e9les k\u00f6rben haszn\u00e1lnak sz\u00e1mos illatanyagban \u00e9s szappanarom\u00e1ban, \u00e9des f\u0171szeres \u00edzt adhat.<\/p>\n<p>Az AvoTriplex a Banana Boat \u00e1ltal kifejlesztett UVA-abszorbe\u00e1l\u00f3 technol\u00f3gia. Ez a technika benzofenont haszn\u00e1l alapk\u00e9nt, de tartalmaz egy stabiliz\u00e1tort is, amely megakad\u00e1lyozza, hogy a benzofenon a napf\u00e9ny hat\u00e1s\u00e1ra k\u00e1rosodjon. A benzofenon f\u00e9nyv\u00e9d\u0151 \u00f6sszet\u00e9tele tartalmaz egy er\u0151s\u00edt\u0151t \u00e9s egy stabiliz\u00e1tort is, amelyek egy\u00fcttm\u0171k\u00f6dve n\u00f6velhetik a f\u00e9nyv\u00e9d\u0151 hat\u00e9konys\u00e1g\u00e1t. A biol\u00f3giai kutat\u00e1sban a benzofenonokat sz\u00e9les k\u00f6rben haszn\u00e1lj\u00e1k fotofizikai szondak\u00e9nt, k\u00fcl\u00f6n\u00f6sen a peptid-feh\u00e9rje k\u00f6lcs\u00f6nhat\u00e1sok azonos\u00edt\u00e1s\u00e1ra \u00e9s felt\u00e9rk\u00e9pez\u00e9s\u00e9re.<\/p>\n<p><strong>UV-blokkol\u00f3k\u00e9nt<\/strong><\/p>\n<p>A benzofenon UV-blokkol\u00f3k\u00e9nt a m\u0171anyag csomagol\u00e1sok v\u00e9delm\u00e9re is haszn\u00e1lhat\u00f3 a polimerek vagy a tartalom fotodegrad\u00e1ci\u00f3ja ellen. A gy\u00e1rt\u00f3k a felhaszn\u00e1l\u00e1s miatt \u00e1tl\u00e1tsz\u00f3 m\u0171anyagot vagy \u00fcveget haszn\u00e1lhatnak term\u00e9keik csomagol\u00e1s\u00e1hoz (p\u00e9ld\u00e1ul PETE vizes palack). Ennek hi\u00e1ny\u00e1ban a t\u00e1rol\u00f3ed\u00e9nynek \u00e1tl\u00e1tszatlannak vagy feket\u00e9nek kell lennie.<\/p>\n<p><strong>Parf\u00fcm\u00f6kben<\/strong><\/p>\n<p>A benzofenon \"\u00e9des-f\u00e1s-ger\u00e1niumszer\u0171 felhangokat\" ad, amikor \u00edzes\u00edt\u0151- vagy parf\u00fcmkomponensk\u00e9nt alkalmazz\u00e1k.<\/p>\n<p><strong>\u00c9lelmiszerekben<\/strong><\/p>\n<p>Benzofenon A van\u00edlia, a vaj \u00e9s sz\u00e1mos m\u00e1s aroma el\u0151\u00e1ll\u00edt\u00e1s\u00e1ban bet\u00f6lt\u00f6tt f\u0151 funkci\u00f3ja mellett ez a molekula fix\u00e1l\u00f3szerk\u00e9nt is felhaszn\u00e1lhat\u00f3. Gyenge \u00e9dess\u00e9ge \u00e9s illatos jellege miatt alkalmas sz\u00e1mos alacsony min\u0151s\u00e9g\u0171 aroma, t\u00f6bbek k\u00f6z\u00f6tt r\u00f3zsa, bab\u00e9rlev\u00e9l, \u00e9des t\u00far\u00f3, f\u00e9l\u00e9nk vir\u00e1gok, gy\u00f6ngyvir\u00e1g, gy\u00f6ngyvir\u00e1g, napraforg\u00f3, orchidea, galagonyavir\u00e1g, f\u00fcst\u00f6l\u0151 \u00e9s Wei keleti \u00edzes\u00edt\u00e9s\u00e9re. Mandula, bogy\u00f3s gy\u00fcm\u00f6lcs\u00f6k, gy\u00fcm\u00f6lcs\u00f6k, vaj, di\u00f3f\u00e9l\u00e9k, \u0151szibarack, van\u00edliar\u00fad \u00e9s m\u00e1s \u00e9telek \u00edz\u00e9nek fokoz\u00e1s\u00e1ra haszn\u00e1lj\u00e1k. Antioxid\u00e1nsk\u00e9nt is haszn\u00e1lj\u00e1k szappanokban.<\/p>\n<p><strong>F\u00e9ny\u00e9rz\u00e9keny gyant\u00e1k, bevonatok \u00e9s ragaszt\u00f3k felhaszn\u00e1l\u00e1sa<\/strong><\/p>\n<p>Az UV-abszorberek, n\u00f6v\u00e9nyv\u00e9d\u0151 szerek, gy\u00f3gyszerek \u00e9s illatanyagok el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz haszn\u00e1lt prekurzor a benzofenon. A gy\u00f3gyszeriparban biciklikus piperidinek el\u0151\u00e1ll\u00edt\u00e1s\u00e1ra haszn\u00e1lj\u00e1k, amelyek k\u00f6z\u00e9 tartozik p\u00e9ld\u00e1ul a difenhidramin-hidroklorid \u00e9s a benzotropin-hidrobromid. Ez a vegyi anyag megakad\u00e1lyozza a szagok kialakul\u00e1s\u00e1t, mik\u00f6zben megakad\u00e1lyozza a sztirol polimeriz\u00e1ci\u00f3j\u00e1t is. Mivel olyan kellemes illata van, sokf\u00e9le szappanban \u00e9s parf\u00fcmben megtal\u00e1lhat\u00f3.<\/p>\n<p>UV-abszorberek, pigmentek, gy\u00f3gyszerek \u00e9s vegyi anyagok alkot\u00f3r\u00e9sze, \u00e9s a szappanok \u00edzes\u00edt\u00e9s\u00e9re is haszn\u00e1lj\u00e1k. Ezen k\u00edv\u00fcl alacsony h\u0151m\u00e9rs\u00e9kleten a fluorozott gumi gyorskem\u00e9ny\u00edt\u0151jek\u00e9nt haszn\u00e1lj\u00e1k, \u00e9s fluorozott gumi el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz haszn\u00e1lj\u00e1k. Lehets\u00e9ges, hogy a gy\u00e1rt\u00f3k sz\u00e1m\u00e1ra el\u0151ny\u00f6s lehet az \u00e1tl\u00e1tsz\u00f3 \u00fcvegb\u0151l vagy m\u0171anyagb\u00f3l k\u00e9sz\u00fclt tart\u00e1lyok haszn\u00e1lata.<\/p>\n<p><strong>F\u00e9nyaktiv\u00e1tork\u00e9nt<\/strong><\/p>\n<p>Sz\u00e1mos egy\u00e9b alkalmaz\u00e1sa mellett f\u00e9nyaktiv\u00e1tork\u00e9nt haszn\u00e1lj\u00e1k ultraibolya (UV) term\u00e9kek, gy\u00f3gyszeripari k\u00f6ztes term\u00e9kek, parf\u00fcm\u00f6k \u00e9s f\u00e9nystabiliz\u00e1torok gy\u00e1rt\u00e1s\u00e1ban.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Kezdem\u00e9nyez\u0151k\u00e9nt<\/strong><\/p>\n<p>UV-kem\u00e9nyed\u0151 gyant\u00e1k, tint\u00e1k \u00e9s bevonatok ind\u00edt\u00f3anyaga; k\u00f6ztes term\u00e9k f\u00e9nypigmentek, illatanyagok, gy\u00f3gyszerek \u00e9s rovar\u00f6l\u0151 szerek el\u0151\u00e1ll\u00edt\u00e1s\u00e1hoz.<\/p>\n<p><strong>Indik\u00e1tork\u00e9nt<\/strong><\/p>\n<p>Toluol, benzol, THF, acetonitril \u00e9s m\u00e1s vegyszerek eset\u00e9ben gyakran haszn\u00e1lj\u00e1k indik\u00e1tork\u00e9nt a benzofenont. Ha az adal\u00e9kol\u00e1s ut\u00e1n sz\u00e9p k\u00e9k sz\u00edn jelenik meg, az anyag desztill\u00e1lhat\u00f3 \u00e9s felhaszn\u00e1lhat\u00f3. A benzofenon a legjobban n\u00e1triumban t\u00e1rolhat\u00f3, de a pontos mechanizmus, amellyel ez a sz\u00edn keletkezik, nem ismert. A k\u00f6vetkez\u0151, nem angol nyelv\u0171 k\u00e9miai reakci\u00f3mechanikai szakirodalom esetleg tartalmazza a magyar\u00e1zatot: Mivel oxig\u00e9natomjai elektronokat vesznek fel a n\u00e1triumb\u00f3l, \u00e9s \u00edgy egy stabil elektromos \u00e1llapot\u00fa, s\u00f6t\u00e9tk\u00e9k sz\u00edn\u0171 karbonilgy\u00f6k keletkezik, a benzofenont az anaerob \u00e1llapotok indik\u00e1torak\u00e9nt haszn\u00e1lj\u00e1k. Gyakran alkalmazz\u00e1k.<\/p>\n<p>A benzofenon hozz\u00e1ad\u00e1s\u00e1val az oldat k\u00e9kesebb\u00e9 v\u00e1lt, ami azt jelezte, hogy kevesebb oxig\u00e9n \u00e1ll rendelkez\u00e9sre, \u00e9s \u00f6ntudatlanul arra \u00f6szt\u00f6n\u00f6zte az embert, hogy kevesebb vizet igyon. A benzofenon mennyis\u00e9g\u00e9t\u0151l \u00e9s a haszn\u00e1lt old\u00f3szert\u0151l f\u00fcgg, hogy az oldat az elj\u00e1r\u00e1s sor\u00e1n k\u00e9k sz\u00edn\u0171v\u00e9 v\u00e1lik-e. A minta el\u0151kezel\u00e9s\u00e9hez aj\u00e1nlatos olyan gyakori sz\u00e1r\u00edt\u00f3szereket haszn\u00e1lni, mint a k\u00e1lium-karbon\u00e1t, n\u00e1trium-szulf\u00e1t, n\u00e1trium-hidroxid \u00e9s m\u00e1sok, mivel a THF (300 ml) jelent\u0151s mennyis\u00e9g\u0171 vizet tartalmaz, \u00e9s t\u00f6bb mint 6 \u00f3r\u00e1t vesz ig\u00e9nybe a reflux. A reflux id\u0151tartama egyenesen ford\u00edtottan ar\u00e1nyos a m\u00f3dszerben haszn\u00e1lt old\u00f3szer t\u00e9rfogat\u00e1val; min\u00e9l nagyobb a t\u00e9rfogat, ann\u00e1l hosszabb a reflux id\u0151tartama.<\/p>\n<p><strong>Szint\u00e9zis<\/strong><\/p>\n<p>A benzofenon akkor keletkezik, amikor a r\u00e9z kataliz\u00e1lja a difenilmet\u00e1n leveg\u0151vel t\u00f6rt\u00e9n\u0151 oxid\u00e1ci\u00f3j\u00e1t.<\/p>\n<p>Az el\u0151\u00e1ll\u00edtott difenildikl\u00f3r-met\u00e1n hidrol\u00edzise a benzol \u00e9s a sz\u00e9n-tetraklorid laborat\u00f3riumi reakci\u00f3j\u00e1t k\u00f6veti. Ezenk\u00edv\u00fcl a benzol Friedel-Crafts-acil\u00e1l\u00e1s\u00e1val j\u00f6n l\u00e9tre benzoil-kloriddal, mik\u00f6zben Lewis-savb\u00f3l (p\u00e9ld\u00e1ul alum\u00ednium-kloridb\u00f3l) k\u00e9sz\u00fclt kataliz\u00e1tort haszn\u00e1lnak. Ez volt az els\u0151 szint\u00e9zis kiindul\u00f3pontja, mivel a benzol \u00e9s a foszg\u00e9n reakci\u00f3ja sor\u00e1n gyorsan keletkezik benzoil-klorid. Egy m\u00e1sik szint\u00e9zism\u00f3dszer a pall\u00e1dium(II)\/oxometal\u00e1t kataliz\u00e1tort haszn\u00e1lja. A k\u00e9t oldali k\u00e9t csoporttal egy alkoholb\u00f3l keton lesz a folyamat sor\u00e1n.<\/p>\n<p>A benzofenon el\u0151\u00e1ll\u00edt\u00e1s\u00e1nak m\u00e1sik m\u00f3dszere a v\u00edzmentes kalcium-benzo\u00e1t pirol\u00edzise, ez a m\u00f3dszer azonban kev\u00e9sb\u00e9 ismert.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Biztons\u00e1gi szabv\u00e1nyok<\/strong><\/p>\n<p>Azt mondj\u00e1k, hogy \"alapvet\u0151en \u00e1rtalmatlan\", mivel nagyon kev\u00e9s vagy semmilyen kock\u00e1zatot nem jelent senkire n\u00e9zve. Annak ellen\u00e9re, hogy az FDA fenntartotta azt az \u00e1ll\u00e1spontj\u00e1t, hogy a benzofenon nem jelent kock\u00e1zatot a k\u00f6zeg\u00e9szs\u00e9g\u00fcgyre, ha rendeltet\u00e9sszer\u0171en haszn\u00e1lj\u00e1k, a hat\u00f3anyagot m\u00e9g mindig tilos \u00e9lelmiszer-adal\u00e9kanyagk\u00e9nt haszn\u00e1lni az Egyes\u00fclt \u00c1llamokban. J\u00f3l ismert, hogy a benzofenon vegyi anyagok farmakol\u00f3giai hat\u00e1st fejthetnek ki az \u00e9l\u0151 szervezetekre. A benzofenon \u00e9s a B-DNS k\u00f6z\u00f6tti k\u00e9miai kapcsolatot molekul\u00e1ris szinten vezett\u00e9k le. Lehets\u00e9ges, hogy a benzofenon ter\u00e1pi\u00e1s potenci\u00e1lj\u00e1nak egy r\u00e9sze annak tulajdon\u00edthat\u00f3, hogy DNS-fotoszenzibiliz\u00e1tork\u00e9nt m\u0171k\u00f6dik - egy olyan funkci\u00f3, amely az anyagnak a DNS-sel val\u00f3 k\u00f6lcs\u00f6nhat\u00e1s\u00e1n \u00e9s az azt k\u00f6vet\u0151, f\u00e9ny seg\u00edts\u00e9g\u00e9vel a molekul\u00e1ra t\u00f6rt\u00e9n\u0151 energia\u00e1tad\u00e1son alapul.<\/p>\n<p><strong>Expoz\u00edci\u00f3s szabv\u00e1nyok<\/strong><\/p>\n<p>A k\u00f6vetkez\u0151 felt\u00e9telek teljes\u00fcl\u00e9se eset\u00e9n a benzofenon szintetikus \u00edzes\u00edt\u0151- \u00e9s seg\u00e9danyagk\u00e9nt k\u00f6zvetlen\u00fcl hozz\u00e1adhat\u00f3 az emberi \u00e9lelmiszerekhez: a) a k\u00edv\u00e1nt hat\u00e1s el\u00e9r\u00e9s\u00e9hez sz\u00fcks\u00e9ges legkisebb mennyis\u00e9gben, \u00e9s egy\u00e9bk\u00e9nt a helyes gy\u00e1rt\u00e1si gyakorlat valamennyi alapelv\u00e9nek megfelel\u0151en haszn\u00e1lj\u00e1k fel; \u00e9s b) az al\u00e1bbiakban felsorolt \u00f6sszetev\u0151k k\u00f6z\u00fcl egyet vagy t\u00f6bbet tartalmaznak, \u00f6nmagukban vagy m\u00e1s \u00edzes\u00edt\u0151- \u00e9s seg\u00e9danyagokkal kombin\u00e1lva: a. etil-acet\u00e1t, etil-benzil-benzo\u00e1t, benzil-acet\u00e1t \u00e9s benzil-alkohol.<\/p>\n<p><strong>Benzofenon-sz\u00e1rmaz\u00e9kok<\/strong><\/p>\n<p>A term\u00e9szetben t\u00f6bb mint 300 benzofenon tal\u00e1lhat\u00f3, \u00e9s mindegyik\u00fck a szerkezeti jellemz\u0151k \u00e9s a biol\u00f3giai funkci\u00f3 k\u00fcl\u00f6nleges kever\u00e9k\u00e9vel rendelkezik. Az\u00e9rt vizsg\u00e1lj\u00e1k \u0151ket, mert \u00e9lvonalbeli gy\u00f3gyszereket \u00e1ll\u00edthatnak el\u0151 bel\u0151l\u00fck. K\u00e9t, a f\u00e9nyv\u00e9d\u0151 szerekben sz\u00e9les k\u00f6rben megtal\u00e1lhat\u00f3 szubsztitu\u00e1lt benzofenon az oxibenzon \u00e9s a dioxibenzon. Egy j\u00f3l ismert \u00e9s gyakran alkalmazott helyettes\u00edtett benzofenon az oktibenzon. A benzofenonvegy\u00fcletek, amelyek szerkezetileg hasonl\u00edtanak egy er\u0151s f\u00e9ny\u00e9rz\u00e9kenys\u00e9get okoz\u00f3 anyaghoz, kem\u00e9ny kritik\u00e1t kaptak haszn\u00e1latuk miatt. A Michler-ketonban a para-helyeken dimetilamino-szubsztituensek vannak jelen. A PEEK nagyszil\u00e1rds\u00e1g\u00fa polimer a benzofenon sz\u00e1rmaz\u00e9kaib\u00f3l k\u00e9sz\u00fcl.<\/p>\n<p><strong>R\u00e1kkelt\u0151 hat\u00e1svizsg\u00e1lat<\/strong><\/p>\n<p>Az egereken \u00e9s nyulakon v\u00e9gzett, a b\u0151r \u00e9lethosszig tart\u00f3 r\u00e1kkelt\u0151 hat\u00e1s\u00e1val kapcsolatos kutat\u00e1sok szerint a kezelt \u00e1llatokn\u00e1l nem volt bizony\u00edt\u00e9k a daganatok gyakoris\u00e1g\u00e1nak n\u00f6veked\u00e9s\u00e9re. A sv\u00e1jci n\u0151st\u00e9ny egerek \u00e9s az \u00faj-z\u00e9landi feh\u00e9r nyulak (h\u00edmek \u00e9s n\u0151st\u00e9nyek) b\u0151r\u00e9t 120 vagy 180 h\u00e9ten kereszt\u00fcl k\u00fcl\u00f6nb\u00f6z\u0151 koncentr\u00e1ci\u00f3j\u00fa benzofenonnal kezelt\u00e9k helyileg (hetente k\u00e9tszer 0,02 ml). Annak ellen\u00e9re, hogy minden nyulat hetente egyszer vizsg\u00e1ltak, sem a t\u00fal\u00e9l\u00e9si ar\u00e1ny, sem a daganatok sz\u00e1ma nem n\u0151tt a k\u00eds\u00e9rlet sor\u00e1n. A gy\u00f3gyszert nem kap\u00f3 \u00e1llatokkal \u00f6sszehasonl\u00edtva a benzofenont kap\u00f3 egerekn\u00e9l \u00f6sszess\u00e9g\u00e9ben nem n\u0151tt nagyobb sz\u00e1m\u00fa daganat, \u00e9s nem alakult ki nagyobb sz\u00e1m\u00fa egyedi daganat sem. A benzofenonnal kezelt egerekn\u00e9l h\u00e1rom b\u0151rdaganat alakult ki, amelyek k\u00f6z\u00fcl az egyik laph\u00e1msejtes karcin\u00f3ma, a m\u00e1sik kett\u0151 pedig laph\u00e1msejtes papill\u00f3ma volt. A kontroll \u00e1llatokn\u00e1l azonban szint\u00e9n h\u00e1rom b\u0151rdaganat (egy karcin\u00f3ma \u00e9s egy l\u00e1bujjpapill\u00f3ma) alakult ki.<\/p>\n<p><strong>K\u00f6vetkeztet\u00e9s<\/strong><\/p>\n<p>A benzofenon olvad\u00e1spontja 48,1 Celsius-fok, \u00e9s feh\u00e9r, krist\u00e1lyos szil\u00e1rd anyagk\u00e9nt jelenik meg. Illata r\u00f3zsaszer\u0171, \u00e9s egy leheletnyi ger\u00e1niumot is tartalmaz. Ezt a vegyi anyagot vagy benzol \u00e9s benzoil-klorid alum\u00ednium-kloriddal, vagy benzol \u00e9s sz\u00e9n-tetraklorid reakci\u00f3j\u00e1val lehet el\u0151\u00e1ll\u00edtani. A difenilmet\u00e1n oxid\u00e1ci\u00f3ja szint\u00e9n benzofenon k\u00e9pz\u0151d\u00e9s\u00e9t eredm\u00e9nyezheti. Fix\u00e1l\u00f3szerk\u00e9nt is haszn\u00e1lj\u00e1k, \u00e9s gyakran haszn\u00e1lj\u00e1k vir\u00e1gk\u00f6t\u00e9szetben. A nyomdaipar rendszeresen haszn\u00e1lja a benzofenont, mint fotoinici\u00e1tort az UV-kem\u00e9ny\u00edt\u0151 alkalmaz\u00e1sokban, p\u00e9ld\u00e1ul fest\u00e9kek, k\u00e9palkot\u00e1s \u00e9s \u00e1tl\u00e1tsz\u00f3 bevonatok eset\u00e9ben. Ez a gyakorlat gyakori a nyomdaiparban. Mivel UV-blokkol\u00f3k\u00e9nt m\u0171k\u00f6dik, megakad\u00e1lyozza a csomagol\u00f3 polimerek \u00e9s a csomagok tartalm\u00e1nak fotodegrad\u00e1ci\u00f3j\u00e1t. Megv\u00e9d bizonyos dolgokat, t\u00f6bbek k\u00f6z\u00f6tt a szappanokat \u00e9s illatanyagokat a nap ultraibolya sug\u00e1rz\u00e1s\u00e1t\u00f3l. A gy\u00e1rt\u00f3k sz\u00e1m\u00e1ra el\u0151ny\u00f6s, ha \u00e1ruikat \u00e1tl\u00e1tsz\u00f3 anyagokba, p\u00e9ld\u00e1ul m\u0171anyagba vagy \u00fcvegbe csomagolj\u00e1k.<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Ugyanazon sorozat term\u00e9kei<\/strong><\/h2>\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\/hu\/product\/photoinitiator-tpo-cas-75980-60-8\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/cas-270586-78-2\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-pd-01-cas-579-07-7\/\"><span style=\"color: #00ccff;\">PD-01 fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-pbz-cas-2128-93-0\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-oxe-02-cas-478556-66-0\/\"><span style=\"color: #00ccff;\">OXE-02 fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-ombb\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-mpbz-6012\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-mbp-cas-134-84-9\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor MBP<\/span><\/a><\/td>\n<td>CAS 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\/hu\/product\/photoinitiator-mbf-cas-15206-55-0\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-lap-cas-85073-19-4\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-itx-cas-5495-84-1\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-emk\/\"><span style=\"color: #00ccff;\">EMK fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-eha-cas-21245-02-3\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-edb-cas-10287-53-3\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-detx-cas-82799-44-8\/\"><span style=\"color: #00ccff;\">DETX fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-cq\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor CQ \/ k\u00e1mforkinon<\/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\/hu\/product\/photoinitiator-cbp-cas-134-85-0\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor CBP<\/span><\/a><\/td>\n<td>CAS 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\/hu\/product\/photoinitiator-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\">BP \/ benzofenon fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-bms\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-938\/\"><span style=\"color: #00ccff;\">F\u00e9nykezdem\u00e9nyez\u0151 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\/hu\/product\/photoinitiator-937-cas-71786-70-4\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-819-dw\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-784-cas-125051-32-3\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-754-cas-211510-16-6-442536-99-4\/\"><span style=\"color: #00ccff;\">754 fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-6993-cas-71449-78-0\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-6976\/\"><span style=\"color: #00ccff;\">6976 fotoinici\u00e1tor<\/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\/hu\/product\/photoinitiator-379-cas-119344-86-4\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-369-cas-119313-12-1\/\"><span style=\"color: #00ccff;\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-160\/\">Fotoinici\u00e1tor 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\/hu\/product\/photoinitiator-1206\/\"><span style=\"color: #00ccff;\">F\u00e9nyind\u00edt\u00f3 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\/hu\/product\/irgacure-1173-cas-7473-98-5\/\"><span style=\"color: #00ccff;\">1173 fotoinici\u00e1tor<\/span><\/a><\/td>\n<td>CAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2><strong><b>L\u00e9pjen kapcsolatba vel\u00fcnk most!<\/b><\/strong><\/h2>\n<h4><strong><b>Ha COA, MSDS vagy TDS-re van sz\u00fcks\u00e9ge, k\u00e9rj\u00fck, t\u00f6ltse ki el\u00e9rhet\u0151s\u00e9g\u00e9t az al\u00e1bbi \u0171rlapon, \u00e1ltal\u00e1ban 24 \u00f3r\u00e1n bel\u00fcl felvessz\u00fck \u00d6nnel a kapcsolatot.<\/b><\/strong> \u00d6n is k\u00fcldhet nekem e-mailt <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #0000ff;\">info@longchangchemical.com<\/span><\/a> munkaid\u0151ben ( 8:30-18:00 UTC+8 H.-Szombat ) vagy haszn\u00e1lja a weboldal \u00e9l\u0151 chatj\u00e9t, hogy azonnali v\u00e1laszt kapjon.<\/h4>","protected":false},"excerpt":{"rendered":"<p>F\u00e9nyind\u00edt\u00f3 BP \/ benzofenon CAS 119-61-9 Bevezet\u00e9s A benzofenon egy olyan vegyi anyag, amelynek szerkezet\u00e9ben egy karbonilcsoport \u00e9s egy hidroxilcsoport is tal\u00e1lhat\u00f3. K\u00e9miai k\u00e9plete (C6H5)2CO vagy Ph2CO. Feh\u00e9r sz\u00edn\u0171 \u00e9s szerves old\u00f3szerekben old\u00f3dik, szerves old\u00f3szerekben old\u00f3dik. A folyamat sor\u00e1n [...]<\/p>","protected":false},"author":1,"featured_media":5190,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5669","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>China Photoinitiator BP \/ Benzophenone Manufacturer and CAS 119-61-9 Supplier - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"lcnacure\u00ae BP (Benzophenone) can be used as a photoinitiator and is the key product of Longchang Chemical. 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