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公开(公告)号:DD153885A5
公开(公告)日:1982-02-10
申请号:DD22382479
申请日:1979-12-07
Applicant: DEGUSSA
Inventor: SCHWARZ , KLEINSCHMIT , LIEDTKE , WOLFF
IPC: C08L7/00 , C07F7/08 , C07F7/12 , C07F7/18 , C08G75/02 , C08G75/14 , C08K5/5425 , C08K5/548 , C08L21/00 , C08L23/00 , C08L33/00 , C08L33/02 , C08L101/00 , C08K5/54 , C08L9/06
Abstract: Novel bis-(silylethyl)-oligosulphides are obtained by reacting a vinyl silane of the formula (CH2=CH)m-SiRn1R4-(m+n) in which R represents chlorine, bromine, iodine, C1-C3-alkoxy, 2-methoxyethoxy, 2-ethoxyethoxy or hydroxy, R1 represents C1-C3-alkyl, phenyl or C5-C7-cycloalkyl, n is 0, 1 or 2, m is 1 or 2 and m+n is 1, 2 or 3 with sulphur as well as in a given case hydrogen sulphide in molar ratios of vinyl silane to sulphur of from 1:2.5 to 1:10 and vinyl silane to hydrogen sulphide of from 1:0 to 1:5 at temperatures between about 100 DEG and 200 DEG C. under pressure of from 1 to 25 bars (total pressure at the reaction) temperature) and in the presence of sulphidation catalysts known per se, in a given case followed by hydrolysis or partial hydrolysis of the reaction products. The bis-(silylethyl)-oligosulphides are used as reinforcing additives (adhesive agents) in crosslinkable rubber mixtures containing silicate fillers and in a given case carbon black as well as in a given case sulphur and other customary constituents.
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公开(公告)号:BG25235A3
公开(公告)日:1978-08-10
申请号:BG2863574
申请日:1974-12-31
Applicant: DEGUSSA
IPC: C08L7/00 , B29C35/00 , B29C55/00 , B29C65/00 , B29C65/70 , C08J5/10 , C08K3/00 , C08K5/00 , C08K5/548 , C08K7/00 , C08L21/00 , C08L61/10 , C08L67/00 , C08L77/00 , C08L9/06
Abstract: Silica containing mixtures for the improvement of the adhesion of vulcanizable mixtures of natural and/or synthetic rubber to reinforcing fillers or supports of textile and/or metallic fabrics after the vulcanization are prepared that substantially consist of (A) active synthetically produced silica or silicates having a specific surface area according to the BET procedure of about 50 to 500 m2/g and an average primary particle size of from about 5 to 100 and at least one of (B) phenolic resin or aminoplast forming components, namely on the one hand phenols and/or amines and on the other hand aldehydes or aldehyde donors, and/or at least (C) one organosilane which can be a bisalkoxysilylalkyl-oligosulfide of the formula I. Z-Alk-Sn-Alk-Z, in which Z stands for the group R1 R1 R2 ¦ ¦ ¦ (a)-Si-R1, (b)-Si-R2 or (c)-Si-R2 ¦ ¦ ¦ R
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