公开(公告)号：US3641194A

公开(公告)日：1972-02-08

申请号：US3641194D

申请日：1969-02-04

Applicant: CIBA LTD

Inventor： SCHMID ROLF ,  BUCHER INGRID ,  FISCH WILLY ,  BATZER HANS

IPC: C08L63/02 ,  C08G63/16 ,  C08L63/00 ,  C08L67/02 ,  C08G30/12 ,  C08G45/14

CPC classification number: C08L63/00 ,  C08G63/16 ,  C08L67/02 ,  C08L2666/18

Abstract: CRYSTALLINE POLYMERS ARE PREPARED BY THE FORMATION OF ADDUCTS FROM DIEPOXIDES, PREFERABLY DIGLYCIDYL ETHERS OF DIPHENOLS, SUCH AS BISPHENOL A AND ACID POLYESTER OF SUCCINIC ACID AND 1,4-BUTANEDIOL (THE RECURRENT STRUCTURAL UNIT OF THE FORMULA-0-(CH2)4-OCO(CH2)2-COMUST OCCUR AT LEAST SIX TIMES IN THE CHAIN). THE RATIO OF EPOXIDE GROUPS OF THE DIEPOXIDE TO CARBOXYL GROUPS OF THE POLYESTER IS 1:07 TO 1.2, PREFERABLE ABOUT 1:1. ADVANTAGEOUSLY, A PORTION OF THE DICARBOXYLIC ANHYDRIDES (FOR EXAMPLE A DODECENYLSUCCINIC ANHYDRIDE) IS CONCOMITANTLY USED AS CHAIN CROSS-LINKING AGENT. OF ADVANTAGE IS FOR EXAMPLE AN EQUIVALENT RATIO OF 1.3 EPOXIDE GROUP: 190 CARBOXYL GROUP+0.2 ANHYDRIDE GROUP. AFTER STRETCHING, THE POLYMERS HAVE A TENSILE STRENGTH OF 7001000 KG./CM.2 AND AN ELONGATION AT BREAK OF 50-150%. ABOVE THE CRYSTALLIZATION TRANSITION TEMPERATURE, THEY ARE RUBBER-ELASTIC. THEY ARE USED, FOR EXAMPLE, AS POTTING AND SEALING COMPOUNDS OR FOR THE MANUFACTURE OF FIBERS, RIBBONS, FOILS.