Imperial Chemical Industries Limited

Stanley R Dawber

Roger I Hancock

Nigel W Hayman

Richard H Still

Kenneth M Jones

Tahir H Shah

John R Wright

Raymond Peters

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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Cheadle Hulme, United Kingdom

Stanley R Dawber