Rubber compositions containing aromatic furazan oxides

Details Rubber compositions containing aromatic furazan oxides Rubber compositions containing aromatic furazan oxides

C - Chemistry, Metallurgy

08

C

400/1116, 6/121,

C08C 4/00 (2006.01) C08C 19/20 (2006.01) C08C 19/22 (2006.01) C08K 5/35 (2006.01)

Patent

CA 1229940

ABSTRACT OF THE DISCLOSURE: Uncured rubber compositions containing fused aromatic furazan oxides exhibit improved processability and reduced viscosity. Useful furazan oxides have both carbons of the furazan ring as part of a fused aromatic ring and include benzofurazan oxide and its methyl and methoxy analogs. Improvements in processability, green strength and liquification of natural rubber can be achieved through use of these furazan oxides in uncured rubber compositions. Filled rubber vulcanizates containing aromatic furazan oxides exhibit many improved properties such as increased filler-rubber interaction and decreased hysteresis. Useful furazan oxides have both carbons of the furazan ring as part of a fused aromatic ring. Typical examples are benzofurazan oxide and its methyl and methoxy analogs. Tires made from the inventive vulcanizates show lower running termperatures and improved rolling resistance.

428063

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