Polymers for increasing the viscosity of photosensitive resins

Details Polymers for increasing the viscosity of photosensitive resins Polymers for increasing the viscosity of photosensitive resins

G - Physics

03

F

96/150, 400/4024

G03F 7/032 (2006.01)

Patent

CA 1085537

Abstract of the Disclosure It has been found that high quality relief printing plates can be made using a photosensitive composition com- prising at least one unsaturated polyester, at least one ethylenically unsaturated, addition polymerizable monomer, at least one photosensitive initiator and a poly(hydroxyl ether) derived from a diphenol and an epihalohydrin, such as bisphenol A-epichlorohydrin resin. The poly(hydroxyl ether) increases the viscosity of the photosensitive resin such that the resin is less likely to flow during plate- making process, thereby avoiding undesirable blemishes on the finished plate.

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