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公开(公告)号：US3817931A
公开(公告)日：1974-06-18
申请号：US21594172
申请日：1972-01-06
Applicant: ICI LTD
IPC: C08G63/82 , C08G17/015
CPC classification number: C08G63/82
Abstract: POLYESTERS ARE PREPARED BY POLYCONDENSATION OF A BIS(DIHYDRIC ALCOHOL) ESTER OF AROMATIC DICARBOXYLIC ACID USING A DEFINED CATALYST WHICH IS PRODUCED BY REACTING A HYDROXYL BEARING SUPPORT MATERIAL (E.G. ALUMINA) WITH A METAL COMPOUND. THE CATALYST MAY BE GRANULAR AND IN THIS FORM IS FILTERABLE FROM THE PRODUCT POLYMER.
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