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公开(公告)号：US3803097A
公开(公告)日：1974-04-09
申请号：US70279468
申请日：1968-02-05
Applicant: ALLIED CHEM
IPC: C08G63/86 , C08G17/015
CPC classification number: C08G63/866
Abstract: POLYESTERS HAVING LITTLE OR NO DISCOLORATION ARE PREPARED BY CONDENSING DIGLYCOL:TEREPHTHALATE ESTER INTERMEDIATES INCLUDING THE MODIFIED ESTERS AND ISOMERS THEREOF IN THE PERSENCE OF 0.005 TO 0.40 PERCENT ANTIMONY OXALATE BASED ON THE TEREPHTHALATE CONTENT OF THE POLYMER EMPLOYED. THE PROCESS OF THIS INVENION PROVIDES A MEANS FOR OBTAINING COLORLESS FILM AND FIBER-FORMING SYNTHETIC, LINEAR POLYESTERS HAVING IMPROVED PROPERTIES.
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