C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
400/1100, 6/111,
C08K 5/54 (2006.01) C08L 7/00 (2006.01) C08L 9/00 (2006.01)
Patent
CA 1161185
ABSTRACT Vulcanisable Rubber Mixture A vulcanisable rubber mixture of vulcanisable halogen-free rubber or of a mixture of a halogen-free rubber with at most 80%, based on the total weight of the rubber, of a halogen-containing rubber; a silicate filler in quantities of from 1 to 250 parts by weight; an oxide of the metals zinc, magnesium and lead in quantities of from 0 to 15 parts by weight; a monobasic fatty acid containing from 12 to 24 carbon atoms in the alkyl chain, benzoic acid or salicylic acid in quantities of from 0 to 10 parts by weight; optionally sulphur and/or sulphur donors in quantities of from 0.1 to 15 parts by weight; a vulcanisation accelerator in quantities of from 0.1 to 10 parts by weight; a plasticiser in quantities of from 0 to 100 parts by weight; a stabiliser from the group comprising anti-agers, anti-fatigue agents, oxidation inhibitors, light stabilisers and anti-ozonants in respective quantities of from 0 to 10 parts by weight; carbon black in quantities of from 0 to 150 parts by weight; optionally other standard rubber auxiliaries in the usual quantities and at least one organo silane. The rubber mixture contains as organo silane from 0.1 to 20 parts by weight of at least one compound corresponding to the following general formula Xp-CmH2m+1-p-SiR?(OR)3-n I in which X represents chlorine or bromine, p is 1 or 2, m is 1 to 5, R1 represents a C1-C5-alkyl group, a C5-C8-cycloalkyl group or a phenyl group, R represents a C1-C5-alkyl group, a C5-C8-cycloalkyl group, a methoxyethyl group, a phenyl group or the benzyl group and n is 0, 1 or 2, or a hydrolysate and/or condensate thereof. All the quantities specified are based on 100 parts by weight of the rubber. The rubber mixture may additionally contain - per 100 parts by weight of rubber - from 0.5 to 10 parts by weight of at least one organo silane corresponding to the formulae [R?(RO)3-nSiAlk-]2Sx II and/or R?(RO)3-nSi-Alk-SH III in which R and R1, which may be the same or different, each represent an alkyl group containing from 1 to 4 carbon atoms, a cycloalkyl group containing from 5 to 8 carbon atoms or a phenyl radical, n is 0, 1 or 2, Alk represents a difunctional, linear or branched hydrocarbon radical containing from 1 to 10 carbon atoms and x is n number of from 2.0 to 8.0 or a hydrolysate and/or a condensate thereof. It may also contain a master batch of at least one organo silane corresponding to formulae I, II and III and a silicate filler and/or carbon black. the invention also relates to the process for vulcanising the rubber mixtures and to the use of the rubber mixtures for the production of motor vehicle tyres, particularly car tyres, lorry tyres and tyres for cross-country vehicles, for the production of treads for motor vehicle tyres, industrial rubber products and shoe soles.
358299
Tan Ewe-Hong
Wolff Siegfried
Aktiengesellschaft Degussa
Marks & Clerk
LandOfFree
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