Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1989-01-25
1991-03-19
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
528 61, 528 64, 528 65, 528 76, C08G 1810, C08G 1842
Patent
active
050011669
ABSTRACT:
The present invention is directed to isocyanate terminated prepolymers prepared from polyetheresters and isocyanates, and to the process of making elastomers and elastomers so produced.
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Sergent Rabon
Welsh Maurice J.
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