ESTER-CROSSLINKED RUBBER AND METHOD FOR PRODUCING THE SAME, CURABLE RUBBER COMPOSITION FOR PRODUCING THE ESTER-CROSSLINKED RUBBER, AND MODIFIED COPOLYMER, AND MOLDED FORM INCLUDING THE ESTER-CROSSLINKED RUBBER

摘要

PROBLEM TO BE SOLVED: To provide a highly thermally stable crosslinked rubber enabling its own production level to be made higher.;SOLUTION: The crosslinked rubber is obtained by the following process: the carbon-carbon double bonds of a rubbery copolymer obtained by copolymerizaton between 90-99.5 mol% of at least one 4-7C isomonoolefin and 0.5-10 mol% of at least one 4-14C aliphatic diene are epoxidized and/or glycolated; and the resultant copolymer is subjected to esterification reaction with a crosslinking agent having at least two functional groups capable of forming ester linkages by reaction with the resultant epoxy groups and/or hydroxy groups, to effect crosslinking. This ester-crosslinked rubber is stable even at 150°C.;COPYRIGHT: (C)2012,JPO&INPIT