COMPOUND ANTI-AGEING AGENT FOR HIGH ABRASIVE WEAR RUBBER Russian patent published in 2018 - IPC C08L21/00 C08K3/22 C08K5/09 C08K5/18 

FIELD: chemistry.

SUBSTANCE: invention relates to compound anti-ageing agents for rubber used at elevated temperatures in abrasive wear conditions, and can be used in the tyre and rubber industry to provide rubber resistance to abrasive wear during prolonged operation. Compound anti-ageing agent consists of a powdered carrier – colloidal silicic acid and a liquid blend of anti-ageing agents at a ratio of blend to colloidal silicic acid of 45–55 : 55–45 pts.wt. Blend of anti-ageing agents contains, wt%: salicylic acid – 8.7, phthalic anhydride – 2.0, zinc oxide – 29.5, ε-caprolactam – 29.9, N-(1,3-dimethylbutyl)-N-phenyl-p-phenylenediamine – 29.9.

EFFECT: invention increases rubber abrasive wear.

1 cl, 2 tbl