Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1992-07-23
1993-07-20
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521163, 521164, 521172, 521173, 528 59, 528 61, 528 65, 528 66, 623 66, C08G 1814
Patent
active
052294315
ABSTRACT:
An especially crack-resistant yet elastomeric and pliable polyurethane is provided as a polymer which is especially suitable for medical prosthesis, implants, roofing insulators and the like. The polymer is a polycarbonate urethane polymer which is substantially completely devoid of ether linkages.
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Corvita Corporation
Welsh Maurice J.
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