Polyurethane elastomer gels

Details Polyurethane elastomer gels Polyurethane elastomer gels

2005-06-21

2005-06-21

Gorr, Rachel (Department: 1711)

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...

C528S053000, C528S058000, C427S385500

Reexamination Certificate

active

06908979

ABSTRACT:
Polyurethane gels, a reaction system for preparing the gels, and a process for producing polyurethane gels. The reaction system comprises a polyisocyanate composition and an isocyanate-reactive composition comprising a relatively high molecular weight mono-ol and a relatively low molecular weight polyol having a nominal isocyanate-reactive functionality of at least 3. The gels do not require the use of plasticizers. The reaction system and process offer a surprising combination of long working time and rapid cure.

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