Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-08-21
1992-05-05
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525346, 525350, 525353, 5253593, 5253594, 525377, 525386, 526194, 560150, 560174, 560178, C08F 810, C08F 836
Patent
active
051108690
ABSTRACT:
Silylketene acetals, including "living" GTP polymers, are acylated or sulfonylated in the presence of GTP-effective catalysts with acyl or sulfonyl compounds to produce .beta.-ketoesters or .beta.-sulfonylesters; polymeric products, including capped, coupled and chain-extended polymers and block copolymers can be prepared.
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Cohen Gordon M.
Reich Hans J.
Bleutge John C.
E. I. Du Pont de Nemours and Company
Sellers II Robert E. L.
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