CURABLE RUBBER MIXTURE Russian patent published in 2012 - IPC C08L7/00 C08L9/00 C08L9/06 C08K3/24 C08K3/36 C08K5/18 C08K13/02 

FIELD: chemistry.

SUBSTANCE: curable rubber mixture contains natural or synthetic rubber, vulcanising substances, vulcanisation accelerators and activators, filler materials and other additives, as well as 0.5-2.0 pts.wt per 100 pts.wt composite antiageing agent rubber consisting of a powdered carrier - colloidal silica and a liquid alloy of antiageing agents obtained at 70-90°C, containing the following in pts.wt: 50-55 N-isopropyl-N-phenyl-n-phenylenediamine, 20-22 ε-caprolactam, 5-6 stearic acid, 20-22 boric acid in form of a melt obtained beforehand in ε-caprolactam at temperature 110-115°C. The alloy and the powdered carrier are in the following ratio in pts.wt: alloy of antiageing agents 55-60, colloidal silica 40-45.

EFFECT: invention increases thermal-oxidative resistance and ageing resistance in high humidity conditions.

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