Additives for rubber compositions
AssigneeArizona Chemical Company
InventorsNeil Martin RIDDLE, Godfried J.H. BUISMAN, Yvette VERDONK
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Abstract
The instant invention relates to rubber compositions comprising silica, an organosilane having at least one cyclic and/or bridged alkoxy group and a rosin-containing material. The instant invention also relates to tires comprising such rubber compositions, to methods of preparation of such rubber compositions or tires thereof, and to the use of rosin-containing materials for improving the Mooney viscosity of rubbers comprising the same (e.g. in a tire).
Claims22
A rubber composition comprising
- (A) a rubber;
- (B) silica;
- (C) an organosilane having at least one hydroxy, cyclic and/or bridged alkoxy group;
- and
- (D) a rosin-containing material comprising at least one rosin compound and derivatives thereof selected from at least one of rosin, dimerized rosin, hydrogenated rosin, disproportionated rosin, decarboxylated rosin and rosin ester.
Use of a rosin-containing material selected from rosin, dimerized rosin, hydrogenated rosin, disproportionated rosin, decarboxylated rosin and rosin ester (component D)
- in a rubber composition further comprising
- a rubber (component A);
- silica (component B);
- and
- an organosilane having at least one hydroxy, cyclic and/or bridged alkoxy group;
- to obtain a rubber composition having, when the rubber composition is not cured, a reduced Mooney viscosity when compared to a similar uncured rubber composition without component D.
Dependencies are inferred from the claim text.