Polymer-filler coupling additives

Details Polymer-filler coupling additives Polymer-filler coupling additives

2006-12-28

2011-12-20

Eashoo, Mark (Department: 1767)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S445000, C524S449000, C524S451000, C525S194000, C525S195000, C525S232000, C525S349000, C525S375000, C525S383000, C568S021000, C568S022000, C568S023000, C568S025000, C544S053000, C544S063000, C544S072000, C544S088000

Reexamination Certificate

active

08080605

ABSTRACT:
Polymer-filler coupling compounds with the formula B-A-Sx—N are claimed. In these compounds, B is an azaheterocyclic oxygen or sulfur containing moiety, or an allyltin moiety; Sxis a polysulfide, where x is between 2 and about 10; A is a linking atom or group that forms a bridge between B and Sx; and N is a blocking group. Sxcan be a disulfide. N can be a conventional blocking group or other group such as -A-B. Methods for using the polymer-filler coupling compounds to modify polymers containing unsaturated carbon-carbon bonds and promote filler dispersion are also claimed. Additionally, vulcanizable rubber compositions containing the polymer-filler coupling compounds and methods for making vulcanized rubber compositions using the polymer-filler coupling compounds are also claimed.

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