Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-12-19
1990-07-24
Pertilla, Theodore E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525523, 428412, 428413, C08F28302
Patent
active
049436198
ABSTRACT:
A polycarbonate-epoxy polymer and method of making the same is presented. In accordance with the present invention, epoxide groups of epoxy resins react with in-chain carbonate groups of a polycarbonate in the presence of a catalyst to form a polycarbonate-epoxy polymer. When diepoxides and polycarbonates are reacted, the product produced is a three-dimensional network of chains cross-linked with carbonate groups. The cross-link density is controlled by adjusting the epoxy-carbonate ratio. The preferred catalyst comprises quarternary ammonium salts with tertiary amine and alkoxide catalyst being less preferred.
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Bell James P.
Yu Yunzhao
Pertilla Theodore E.
The University Of Connecticut
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