Imperial Chemical Industries Limited

John R Wright

Roger I Hancock

Nigel W Hayman

Richard H Still

Kenneth M Jones

Raymond Peters

Stanley R Dawber

Tahir H Shah

Elastomeric block co-polyesters having improved elastic and work recovery properties, a high melting point and are stable at high temperatures, have hard segments comprising at least 50 mole percent of polyethylene terephthalate groups and soft segments comprising at least 40 weight percent of the block copolyester. The soft segments, which have a defined structure, are formed by reacting phenolic compounds with a mixture of ethylene oxide and propylene oxide/butylene oxide.

Elastomeric polymers

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Cheltenham, United Kingdom

John R Wright