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US 6,548,594 B2Granted
Rubber mixtures
AssigneeDegussa AG
InventorsHans-Detlef Luginsland, Andre Hasse
Life of this patent
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Abstract
Rubber mixtures which comprise (a) a rubber or a mixture of rubbers, (b) a silicatic filler, (c) an organosilane of the general formula (I) R1R2R3Si—R4—SH (I) (d) an alkylsilane of the general formula (II) R1R2R3Si—R5 (II). They are prepared by mixing the rubber or the mixture of rubbers, the silanes according to the formulae I and II and the silicatic filler in a mixing unit and adding the silanes according to the formulae I and II together or separately in succession. They can be used in shaped articles.
Claims8
A rubber mixture comprising
- (a) a rubber or a mixture of rubbers,
- (b) a silicatic filler,
- (c) 1 to 4 wt % based on the amount of filler of an organosilane of the general formula (I)
- R1R2R3Si—R4—SH (I)
- wherein R1, R2, R3 can be identical or different and consist of C1 to C4 alkyl or C1 to C4 alkoxy, R4 consists of C1 to C6 linear or branched divalent hydrocarbon, and
- (d) 1 to 6 wt % based on the amount of filler of an alkylsilane of the general formula (II)
- R1 R2R3Si—R5 (II)
- wherein R1, R2, R3 have the meaning as in formula I, and
- R 5 consists of C16-C20 linear or branched alkyl.
6 more elements
Dependencies are inferred from the claim text.