| 摘要 |
PURPOSE:To obtain titled composition of high fire resistance and durability for use in construction material by incorporating water in a mixture of an acrylic or methacrylic ester-copolymerized resin emulsion, bisphenol type epoxy resin emulsion, filler, etc. so as to give a specific viscosity. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100pts.wt. of a mixture of a pH7.5-9.5 comprising (i) 2-15wt% of a (meth) acrylic ester-copolymerized resin emulsion (said ester being of 1-8C alkyl) or said ester plus styrene-copolymerized resin emulsion (the content of the styrene being <=30wt%), (ii) 1-5wt% of a bisphenol-type epoxy emulsion (on a solid basis), (iii) 25-70wt% of a filler, (iv) 20-60wt% of alpha- or beta-gypsum hemihydrate, (v) 1-5wt% of a coloring pigment, and (vi) 0.8-1.2 equivalent, based on the component (ii), of a polyamide resin or aliphatic polyfunctional amine curing agent, with the weight ratio [(i)+(ii)]/(iv) being 0.15-0.28, with (B) 15-70pts.wt. of water so as to give a viscosity 50-1,000 poises. |
