COMPOSITION FOR MAKING JOINTLESS CAST MONOLITHIC FLOORS Russian patent published in 1997 - IPC

FIELD: organic chemistry; building practice; epoxy compositions having reduced combustibility and intended for making jointless cast monolithic floors. SUBSTANCE: composition comprises epoxy dianic resin, polyoxychloropropylene epoxy resins having epoxy groups content 9-16% and viscosity at most 6.5 Pa/s, filler, oligoglycidyl tetrabromodiphenylol propane, curing agent, and bleaching agent. Filler is constituted by mixture of aluminium hydroxides and boric acid taken in weight ratio 3/2-2/3. Oligoglycidyl tetrabromodiphenylol propane is taken in such amount as to provide weight chlorine-to-bromine weight ratio 0.4-3.5. Curing agent is constituted by amines, while bleaching agent is constituted by titanium or zinc oxides. Components are taken in following weight ratio, parts by weight: epoxy dianic resin, 5-35; polyoxychloropropylene epoxy resin having epoxy groups content 9-16% and viscosity at most 6.5 Pa/s, 30-80; oligoglycidyl tetrabromodiphenylol propane, 15-40; aminic curing agent, 10-24; filler, viz. mixture of aluminium hydroxides and boric acid taken in weight ratio 3/2-2/3, 90-120; bleaching agent, 1-2. Optionally, composition may comprise polymerization accelerating agent in amount 0.5-4 parts by weight, and modifying additives, such as compounds of Mo, Co, Fe, Ni and Mg in amount 0.5-4.5 parts by weight. Composition has breaking strength 129-468 kg/sq.cm, relative elongation 4.1-17.8%, oxygen index 50-75%. EFFECT: enhanced oxygen index; improved engineering and operational properties. 4 cl, 1 tbl