Two-part curing high-durable polyurethane elastomer composition

Details Two-part curing high-durable polyurethane elastomer composition Two-part curing high-durable polyurethane elastomer composition

2004-12-10

2009-10-06

Sergent, Rabon (Department: 1796)

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S076000, C528S077000, C528S080000, C528S081000

Reexamination Certificate

active

07598336

ABSTRACT:
A two-part curing high-durable polyurethane elastomer composition having excellent heat resistance and wet heat resistance, and excellent workability such that a viscosity after two-part mixing is suitable for casting workability which comprises (i) a polyisocyanate component, and (ii) an active hydrogen-containing compound comprising (A) a polyol having a hydroxyl value of from 25 to 55 obtained by reacting a castor oil fatty acid, 12-hydroxystearic acid, or a condensate of their fatty acids, with a polyol (X) having a molecular weight of from 400 to 1,500, and (B) a polyol having a hydroxyl value of from 100 to 500 obtained by ring opening an epoxidized fatty acid ester with a polyhydric alcohol.

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