Photocurable dielectric composition of acrylated urethane prepol

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

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522 90, 522 95, 525455, C08L 7504, C09D 525, H01B 344

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active

047405325

ABSTRACT:
A dielectric coating composition that is screen printable and radiation curable is disclosed. The composition is composed of from about 10 percent to about 50 percent of an unsaturated thiolene prepolymer system, from about 0 percent to about 35 percent of an acrylated prepolymer system, from about 10 percent to about 40 percent of at least one crosslinking diluent monomer, from about 4 percent to about 18 percent of at least one plasticizer and from about 3 percent to about 12 percent of at least one nonshrinking monomer. The cured coating is sufficiently compliant at normal temperatures to avoid cracking upon flexure of thermal expansion of the substrate.

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