Photosensitive composition containing 4-(2,4,6-trimethyl benzene formyl) diphenyl sulfide as photoinitiator

Abstract

The invention relates to a photosensitive composition and an application of the photosensitive composition in photo-curing materials, belonging to the technical field of photo-curing. The photo-curing composition provided by the invention comprises the following components in parts by weight: 2-6 parts of 4-(2,4,6-trimethyl benzene formyl) diphenyl sulfide photoinitiator, 1-10 parts of organic amine assistant photoinitiator, 20-80 parts of ethylene unsaturated compound monomer and 20-80 parts of ethylene unsaturated compound prepolymer. The composition finished product has excellent surface and depth curing performances, high reaction activity, not only keeps the excellent performance of a common benzophenone composition, but also has no odor problem, solves a solubility problem of 4-phenyl benzophenone and 4-thiophenyl benzophenone, has a simple preparation process, does not generate smelly or pungent smell in a production process, does not generate insoluble substances and can be extensively applied to such fields as photocuring paint, printing ink, adhesive, photoresist and the like.

Description

technical field [0001] The invention relates to a photosensitive composition and its application in photocuring materials, belonging to the field of photocuring technology. Background technique [0002] UV curing technology has been widely used in coatings, inks, adhesives, photoresists and other fields. The photocurable composition in the UV curing system is mainly composed of three parts: monomer, prepolymer and photoinitiator. Among them, the photoinitiator is the most important factor affecting the photosensitive performance of the photocurable composition. When determining a photosensitive When formulating a polymer composition, finding a good photoinitiator is the key to technology. [0003] At present, among the many photoinitiators that have been successfully commercially produced, benzophenone has become one of the most widely used photoinitiators due to its low price and good surface curing performance, but due to the small molecular weight of benzophenone, There...

AI Technical Summary

Problems solved by technology

[0003] At present, among the many photoinitiators that have been successfully commercially produced, benzophenone has become one of the most widely used photoinitiators due to its low price and good surface curing performance, but due to the small molecular weight of benzophenone, Therefore, it has the disadvantages of being volatile and prone to serious odor

In order to overcome the shortcomings of benzophenone's small molecular weight and volatility, people have developed two products, 4-phenylbenzophenone and 4-phenylthiobenzophenone, which have improved the performance of benzophenone. Odor problem, but the solubility of 4-phenylbenzophenone and 4-phenylthiobenzophenone is poor, and there are many residues after curing, which seriously affects the performance of the material, and the environmental pollution is large, and there are potential safety hazards

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