Processing-coadjuvating additives for rubbers vulcanizable...

C - Chemistry – Metallurgy – 08 – L

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400/6532, 400/71

C08L 21/00 (2006.01) C08K 5/14 (2006.01) C08L 27/12 (2006.01)

Patent

CA 1297616

NEW PROCESSING-COADJUVATING ADDITIVES FOR RUBBERS VULCANIZABLE BY MEANS OF PEROXIDES (Case T.3454) Abstract of the Disclosure The use of liquid neutral perfluoropolyethers in amounts below 1 part by weight per 100 parts by weight of elas- tomer, and of derivatives thereof having brominated end groups, in amounts of 0.01 to 5 parts by weight per 100 parts by weight of elastomer, having a molecular weight ranging from 500 to 10,000, as additives in rubber mixes vulcanizable with peroxides, in order to improve the processability in the extrusion and the detachability of the vulcanized article from the molding dies.

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