Rubber mixtures

Abstract

Rubber mixtures are disclosed comprising (A) at least one styrene-butadiene rubber, (B) at least one filler and (C) at least one polysulphidic organo(alkyl polyether silane) of the general formula I

Description

Claims

1. A rubber mixture, comprising (A) at least one styrene-butadiene rubber,(B) at least one filler and(C) at least one polysulphidic organo(alkyl polyether silane) of the general formula I [(X)(X′)(X″)Si—R1]2—Sm  IwhereX is an alkyl polyether group O—((CRII2)w—O—)tAlk having from 14 to 29 carbon atoms, t=from 2 to 9, w=from 2 to 9,RII is, each independently of the other, H, a phenyl group or an alkyl group,Alk is a branched or unbranched, saturated or unsaturated, aliphatic, aromatic or mixed aliphatic/aromatic monovalent C10-C25-hydrocarbon group,X′ is branched or unbranched alkyl,branched or unbranched alkoxy,a branched or unbranched C2-C25 alkenyloxy group,a C6-C35 aryloxy group,a branched or unbranched C7-C35 alkylaryloxy group,a branched or unbranched C7-C35 aralkyloxy group or an X,X″ is branched or unbranched alkyl,branched or unbranched alkoxy,a C2-C25 alkenyloxy group,a C6-C35 aryloxy group,a branched or unbranched C7-C35 alkylaryloxy group,a branched or unbranched C7-C35 aralkyloxy group or an X,RI is a branched or unbranched, saturated or unsaturated, aliphatic, aromatic or mixed aliphatic/aromatic divalent C1-C30 hydrocarbon group, if appropriate having substitution,m is from 1 to 12.

2. The rubber mixture according to claim 1, wherein the polysulphidic organo(alkyl polyether silane) is a mixture composed of polysulphidic organo(alkyl polyether silanes) of the general formula I.

3. The rubber mixture according to claim 1, wherein the polysulphidic organo(alkyl polyether silane) has been absorbed onto an inert organic or inorganic carrier or has been previously reacted with an organic or inorganic carrier.

4. The rubber mixture according to claim 1, further comprising (D) a thiuram sulphide accelerator and/or carbamate accelerator and/or the corresponding zinc salts,(E) a nitrogen-containing co-activator,(F) optionally additional rubber auxiliaries and(G) optionally additional accelerators.

5. A process for preparation of the rubber mixture according to claim 1 comprising mixing together at least one styrene-butadiene rubber, and at least one filler and one polysulphidic organo(alkyl polyether silane) of the formula (I) are mixed.

6. A molding formed of the rubber mixture according to claim 1.

7. An article of manufacture made from the rubber mixture according to claim 1.

8. The article of manufacture according to claim 7 which is selected from the group consisting of a pneumatic tire, tire tread, cable sheathing, hose, drive belt, conveyor belt, roll coverings, tire, shoe soles, sealing ring and damping element.