MICROCAPSULAR ADDITIVES FOR RUBBER AND METHOD OF PREPARING SAID ADDITIVES Russian patent published in 2009 - IPC B01J13/02 C08K3/06 C08K9/10 

FIELD: chemistry.

SUBSTANCE: invention relates to capsular additives for rubber, obtained in form of microcapsules with a polymer wall and a nucleus, which contains at least one additive for rubber. The capsule wall is formed by at least one component from a reactive resin and at least one component from a polyelectrolyte or ionomer component. The reactive resin is melamine formaldehyde resin and/or polyurea resin. The invention also relates to a method of preparing such microcapsules. The proposed microcapsules are used for vulcanising natural and synthetic rubber. The microcapsules are thermally and mechanically stable in conditions for preparing and processing rubber compositions in kneading machines, manglers or twin-screw extruders at temperatures ranging from 120°C to 140°C.

EFFECT: microcapsular additives are uniformly distributed in rubber mixture and prevent formation of a heterogeneous rubber/additive system.

30 cl, 12 ex