EPOXY BINDER Russian patent published in 1998 - IPC

FIELD: chemical industry. SUBSTANCE: present invention describes multipurpose epoxy binders used in enamels, varnishes and sealing compounds, more particularly binders having lower combustibility and containing polyoxychloropropylene epoxy resins. The claimed binder comprises polyoxychloropropylene epoxy resin containing 9-16% epoxy groups and having viscosity not greater than 6.5 Pa/s and further comprises oligoglycidyl tetrabromodiphenyl propane at chlorine to bromine weight ratio is 0.4-3.5. Proportions of components are as follows (wt parts): 5-35 epoxy diane resin; 30-80 polyoxychloropropylene epoxy resin containing 9-16% epoxy groups and having viscosity of not greater than 6.5 Pa/s, 15-40 oligoglycidyl tetrabromodiphenyl propane; 8-24 amine hardener; 0.5-4 polymerization accelerator. Rupture strength of hardened binder is 32-239 kg/sq cm, rupture elongation is 9-25.6%, oxygen index is 24-27%. EFFECT: improved properties of the epoxy binder. 1 tbl