| abstract |
The present invention provides a polymer-filler coupling compound represented by B-A-S x -N, a vulcanizable rubber composition containing the compound, and a method for producing the composition. The coupling compound is wherein B is an azaheterocyclic oxygen or sulfur containing moiety, or an allyltin moiety; S x is a polysulfide, provided that x is between 2 and about 10 A is a linking atom or group that forms a bridge between B and S x ; N is a protecting group, S x may be a disulfide, N is a conventional protecting group, Other groups such as AB may be used. The coupling compound is also used to modify polymers containing unsaturated carbon-carbon bonds and to promote filler dispersion. [Selection figure] None |