Epichlorhydrin-ethylene oxide copolymer

This approach was used in the development of the epichlorhydrin rubbers which became commercially available around 1965 from Goodrich (Hydrin) and Hercules (Herclor). Both homopolymers of epichlorhydrin (Hydrin 100, Herclor H) and copolymers of epichlorhydrin with ethylene oxide (Hydrin 200, Herclor C) became available. (In 1986 Hercules sold their interest in these materials to Goodrich, who in turn later sold this to Nippon Zeon). 

The epichlorhydrin polymer group includes the homopolymer (CO), the copolymer with ethylene oxide (ECO), and terpolymers (GECO). 

Epichlorhydrin rubbers Two types are available, the homopolymer, polyepichlorhydrin (CO Rubber) with an average molecular weight of about 0 5 X 10 , and an equimolar copolymer of epichlorhydrin with ethylene oxide (ECO Rubber) with a molecular weight of about 2-3 X 10 ... 

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