Rigid polyurethane foams prepared from polyvinyl acetate/allyl a

Details Rigid polyurethane foams prepared from polyvinyl acetate/allyl a Rigid polyurethane foams prepared from polyvinyl acetate/allyl a

1989-08-10

1991-09-10

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521914, 521174, 528 75, 528103, C08G 1814

Patent

active

050474413

ABSTRACT:
Polyurethane systems are disclosed utilizing polyvinyl acetate/allyl alcohol random copolymers to produce rigid polyurethane foams and a process for producing the same. The resulting foams exhibit improved K-factors, utilized reduced amounts of fluorocarbons as blowing agents, and maintained insulating properties when formulated with increased amounts of water.

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