Polyurethane oligomer impact and shrinkage modifiers for thermos

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ethylenically unsaturated reactant admixed with either...

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523500, 525 27, 525440, 525920, C08L 6706, C08L 6702

Patent

active

044218940

ABSTRACT:
The polyurethane oligomer reaction product of an isocyanate-terminated prepolymer with an isocyanate-reactive unsaturated monomer is incorporated into conventional thermosetting polyester resin formulations to impart improved impact properties and reduced shrinkage behavior.

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