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    12.
    发明专利
    未知

    公开(公告)号：SE415362B

    公开(公告)日：1980-09-29

    申请号：SE7414780

    申请日：1974-11-25

    Applicant: BAYER AG

    Inventor： OERTEL H ,  ROOS E ,  LEY K

    IPC: C08K5/13 ,  C08K5/3475 ,  C08L75/04

    Abstract: 1312869 Bis-phenols BAYER AG 19 April 1971 [14 March 1970] 22335/71 Heading C2C [Also in Division C3] Novel compounds of the formula (wherein R is C 1-18 alkyl, C 5-6 cycloalkyl which may be C 1-6 alkyl-substituted, or C 7-9 aralkyl) are prepared by reacting α,α 1 -dihydroxy-1,4- diisopropylbenzene with appropriate 2 - R- 4-methyphenols in the presence of acid dehydration catalysts. The preparation of the compounds of the formulµ is also described. The first of these may subsequently be converted to the novel compounds by insertion of the group R using suitable olefines or carbinols. All the above compounds have use as stabilizers for polyurethanes (see Division C3).

    VULCANIZATION PROCESS
    19.
    发明专利
    VULCANIZATION PROCESS 未知

    公开(公告)号：CA930898A

    公开(公告)日：1973-07-24

    申请号：CA101124

    申请日：1970-12-21

    Applicant: BAYER AG

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

    IPC: C07F9/165 ,  C08K5/5398

    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.

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