公开(公告)号：ZA7008555B

公开(公告)日：1971-09-29

申请号：ZA7008555

申请日：1970-12-18

Applicant: BAYER AG

Inventor： SCHUBART R ,  ROOS E ,  EHOLZER A ,  KEMPERMANN T

IPC: C07F9/165 ,  C08K5/5398 ,  B29H

CPC classification number: C07F9/1656 ,  C07F9/1652 ,  C08K5/5398 ,  C08L23/16

公开(公告)号：ZA708555B

公开(公告)日：1971-09-29

申请号：ZA708555

申请日：1970-12-18

Applicant: BAYER AG

Inventor： SCHUBART R ,  ROOS E ,  EHOLZER A ,  KEMPERMANN T

IPC: C07F9/165 ,  C08K5/5398 ,  B29H

Abstract: 1339632 Vulcanizing olefin terpolymer rubbers BAYER AG 7 Jan 1971 [13 Jan 1970] 781/71 Heading C3P [Also in Division C2] The vulcanization of an ethylene-propylene terpolymer (EPDM rubber) using sulphur or a sulphur-donor is effected in the presence of a vulcanization accelerator which is an S,S 1 - carbonyl bis-dithio-phosphate diester of the formula wherein R is a C 1 -C 6 alkyl radical which may be substituted by a C 1 -C 4 alkoxy radical, and a thiazole type accelerator, e.g. 2-mercaptobenzothiazole, dibenzothiazyl disulphide or the zinc salt of 2-mercaptobenzothiazole. A thiuramic or dithiocarbamate accelerator and/or a thiourea may also be present. The preferred dithiophosphate diester derivatives (I) are those in which each of the R radicals is n-butyl or isobutyl respectively. The vulcanization may be effected in conventional manner generally at 120-300‹ C. and the EPDM rubbers may also contain the usual fillers and other additives, e.g. carbon black, an aliphatic mineral oil, zinc oxide and stearic acid. Specified EPDM rubbers are those containing dicyclopentadiene and ethylidene norbornene respectively as the diene component.