METHOD AND COMPOSITION FOR RECOVERY OF ELASTIC PRODUCTION TOOLING Russian patent published in 2012 - IPC C08L83/04 C09D183/04 B29C73/02 

FIELD: machine building.

SUBSTANCE: using mould recovery method in the manufacture of production tooling, made of silicon elastic material, the surface of a mould is pre-treated with a solution of amine or amine mixture in an organic solvent. Then repair mortar is applied, containing high molecular weight silicone rubber, a curing agent and an organic solvent, which additionally may contain a solution of amine or amine mixture in an organic solvent. The invention also relates to a composition for restoring of moulds, made of silicone elastic material. The composition contains a high molecular weight silicone rubber, a curing agent, an organic solvent solution of an amine or a mixture of amines in an organic solvent at a ratio of the wt % - Amine: rubber from 1:20 to 1:50.

EFFECT: when restoring a damaged mould the surface is hardened that prolongs the use of a mould, ensures good traction with the surface of the mould, curing of reducing layer is accelerated, its uniformity is achieved on a complex profile of a mould.

3 cl, 2 dwg, 2 tbl, 6 ex