摘要:
Disclosed is a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (A) a particular xanthene, coumarin or merocianine dyestuff, (B) a diaryliodonium salt and (C) a compound having the formula;
摘要翻译:公开了对可见光非常敏感的光聚合性组合物。 所述组合物包含可聚合化合物和光聚合引发剂,其中所述光聚合引发剂包括(A)特定的呫吨,香豆素或三聚氰胺染料,(B)二芳基碘鎓盐和(C)具有下式的化合物: e
摘要:
Photoimaging compositions comprising (A) a cyclohexadienone compound as defined, and (B ) addition polymerizable ethylenically unsaturated monomer, selected from the group of t-butyl-acrylate, N,N-diethylaminoethylacrylate, styrene and a monomeric compound having at least two terminal ethylenically unsaturated groups. A polymer binder can be present in the compositions. The new imaging compositions are useful in photoimaging products such as proofing papers, printout papers, overlay films and photopolymerizable elements useful for printing and photoresist purposes. The compositions have improved thermal stability.
摘要:
Die Erfindung betrifft ein Verfahren zur Stabilisierung von photopolymerisierbaren wasserlöslichen oder wasserdispergierbaren Mischungen, im wesentlichen bestehend aus einem Basispolymerisat, mindestens einer polymerisierbaren ethylenisch ungesättigten Verbindung und mindestens einem Photoinitiator und/oder Photosensibilisator, gegen thermische Polymerisation durch Behandlung des Basispolymerisats mit einem halogen, Pseudohalogen oder Polyhalogenid.
摘要:
A photosolubilizable composition contains both a compound capable of producing an acid by irradiation with actinic rays and a compound which has at least one silyl ether or silyl ester group capable of being decomposed by an acid; optionally, a compound having at least one silyl ether group has at least one hydrophilic group, providing for increased solubility in a developing solution under the action of an acid, thus enhancing the photosensitivity and the development latitude of the composition.
摘要:
The invention provides new compositions which change colour on exposure to actinic radiation and contain a photosensitive onium, e.g. iodonium or sulphonium, salt and a dyestuff which changes colour when protonated. The compositions may also include a resin, especially a resin curable by the onium salt when the latter is exposed, and preferably an epoxy resin. The compositions are useful especially as coatings, e.g. for making screen stencils or for producing lithographic printing plates.