The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 1990
Filed:
Jul. 31, 1989
Richard H Still, Disley, GB;
Stanley R Dawber, Cheadle Hulme, GB;
Raymond Peters, Wilmslow, GB;
Tahir H Shah, Manchester, GB;
Nigel W Hayman, Cheltenham, GB;
John R Wright, Cheltenham, GB;
Roger I Hancock, Stockton-on-Tees, GB;
Kenneth M Jones, Knaresborough, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
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.