METHOD OF OBTAINING CHEMICALLY STABLE PRESS-MOULDS AND INSTRUMENTS Russian patent published in 2015 - IPC B29C33/40 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method of obtaining press-moulds, two-component hardening composition, applied in said method, and to application of said hardening composition for manufacturing seamless press-moulds and instruments. Technical result is achieved by method of obtaining instrument or press-mould, which includes application of seamless modelling paste, containing polymer system (a) and hardening system (b) on substrate with formation of continuous film of hardening substance, hardening of seamless modelling paste at temperature 20-60°C to realise complete reaction, mechanical processing of hardened seamless modelling paste with obtaining instrument or press-mould. Polymer system (a) contains epoxy resin (a1), which has average quantity of epoxy functional groups ≥3, selected from polyfunctional glycidylamines, and hardening system (b), containing amine compound (b1), which has average quantity of amine functional groups ≥4, selected from polyalkylenepolyamines.

EFFECT: increase of chemical resistance of press-forms to low-molecular monomers, reduction of shrinkage and value of exothermal effect of hardening.

11 cl, 3 tbl, 3 ex