POLYMERIC COMPOSITION Russian patent published in 2007 - IPC C09D5/08 C09D163/02 

FIELD: chemistry of polymers, chemical technology.

SUBSTANCE: invention relates to a polymeric composition designated for anti-corrosive protection of petroleum-gas-pipelines, metal constructions, equipment used in different techniques and as impregnating compositions, hermetic agents and others. The composition comprises the following content mas. p. p.: epoxy diane resin, 100; epoxy aliphatic resin. 24-60; oligoether cyclocarbonates with the mass part of cyclocarbonate groups from 18 to 29, 1-30; froth breaker, 0.5-2.5; coal resin, 0.75-2.0; ether epoxide "Penta-539", 0.5-8; filling agent, 1.5-8.5, and amine hardening agent, 40-85. As an epoxy aliphatic resin the invention uses oligoether epoxides with the content of epoxy group from 7.5% to 28%. As froth breaker the invention uses silicone froth breaker or siloxane resin, or an acrylic froth breaker. Ether epoxide "Penta-539" represents product of esterification of epoxy resin and saturated carboxylic acid. As amine hardening agent the invention uses a mixture of product (A) that is prepared by interaction of aromatic amine (B) with salicylic acid (C) and a plasticizing agent (D) representing an oxygen-containing compound from polyol group and taken in the ratio B:C:D = (73:2:25)-(42:8:50), respectively, and an organosilicon amine (E) in the ratio A:E = (99:1)-(1:99). The invention provides enhancing the rupture strength value, relative rupture elongation value, adhesion to steel, water resistance, to reduce water absorption being both in the parent and after prolonged effect of water state, and to reduce the viscosity value without using solvents also.

EFFECT: improved, enhanced and valuable properties of composition.

2 tbl, 9 ex