CURABLE FLUOROELASTOMER COMPOSITION Russian patent published in 2000 - IPC

FIELD: polymer materials. SUBSTANCE: composition intended for manufacturing fuel hoses or annular sealing gaskets for injectors contains (i) 100 wt.pts of copolymers or terpolymers based on vinylidene fluoride with content of fluorine at least, 67%; vinylidene fluoride, 30-50%; and hexafluoropropylene, 20-60%; optionally including units of other ethylenically unsaturated monomers, provided that summary amount of comonomers is equal to 100%; (ii) 1-5 wt. pts of curing accelerator-curing agent adduct in molar proportion from 1:2 to 1:5, accelerator being an opium organic compound and curing agent di- or polyhydroxyl or di- or polythiol compound, prepared by melting adduct components in indicated proportions or by melting 1:1 adduct added to curing agent in required amounts; and optionally (iii) 0.05 to 0.5 wt. pts of above-indicated curing accelerator. EFFECT: reduced residual compression deformation and viscosity and increased resistance against lubricants and gasolines containing polar substances. 15 cl, 3 tbl, 7 ex