Method of stabilization of rubbers and vulcanizates

Details Method of stabilization of rubbers and vulcanizates Method of stabilization of rubbers and vulcanizates

C - Chemistry, Metallurgy

08

K

400/1, 400/5015

C08K 5/17 (2006.01) C08L 21/00 (2006.01)

Patent

CA 1068436

Abstract of the Disclosure A method of stabilization of rubbers and vulcanizates thereof which involves incorporation, into a rubber, its solu- tion or latex, of arltioxidants, viz. phenolamine resins prepa- red by condensation of hexamethylene tetramine with alkyl-, alkenyl-, dialkyl-, arylalkyl-, halo-substituted phenol, dihydroxydiphenylalkanes, hydroxybenzoic acids. Said resins may be used in a combination with conventional antioxidants such as secondary amines, diamines, 2,6-dialkylderivatives of phenol, phosphorus- and sulphur-containing compounds. Said phenolamine resins are considerably superior over conventional antioxidants in their efficiency against thermal ageing during thermomechanical processing.

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