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RADIATION AND THERMAL RETICULATION OF POLYURETHANE (PU) SYSTEMS BASED ON ISOCYANATE-REACTIVE BLOCK COPOLYMERS
RADIATION AND THERMAL RETICULATION OF POLYURETHANE (PU) SYSTEMS BASED ON ISOCYANATE-REACTIVE BLOCK COPOLYMERS
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机译:基于异氰酸酯反应性嵌段共聚物的聚氨酯体系的辐射和热网化
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摘要
The present invention provides polyurethane systems which cure by radiation and thermal action with crosslinking, and use thereof for the production of holographic media. The polyurethane compositions of the invention comprise A) polyisocyanates, B) isocyanate-reactive block copolymers, C) compounds having groups which react on exposure to actinic radiation with ethylenically unsaturated compounds with polymerization, D) optionally free radical stabilizers and E) photoinitiators.
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