초록 ▼

A water soluble polymer binder for binding a fibrous substrate comprises from about 25 weight percent to about 85 weight percent of an unsaturated carboxylic acid/unsaturated carboxylic acid ester terpolymer; from about 5 weight percent to about 35 weight percent of a divalent ion inhibitor; and fro

A water soluble polymer binder for binding a fibrous substrate comprises from about 25 weight percent to about 85 weight percent of an unsaturated carboxylic acid/unsaturated carboxylic acid ester terpolymer; from about 5 weight percent to about 35 weight percent of a divalent ion inhibitor; and from about 10 weight percent to about 60 weight percent of a hydrophilic cross-linkable polymer. In a preferred mode of the invention the hydrophilic cross-linkable polymer functions substantially as a divalent ion inhibitor and promotes hydrophilicity of the treated fabric eliminating the requirement of a separate divalent ion inhibitor. The binder composition is soluble in an aqueous environment having a divalent ion concentration less than about 50 ppm and a monovalent ion concentration of less than about 0.4 weight percent. Also disclosed is a water dispersible fibrous fabric having an effective amount of the binder distributed on the fibrous substrate and a method of making a water dispersible fibrous fabric.

대표청구항 ▼

[ What is claimed is:] [1.]1. A nonwoven fabric comprising fibrous material and a water-soluble binder composition, wherein the binder composition comprises from about 25 weight percent about 85 weight percent of an unsaturated carboxylic acid/unsaturated carboxylic acid ester terpolymer and from ab

[ What is claimed is:] [1.]1. A nonwoven fabric comprising fibrous material and a water-soluble binder composition, wherein the binder composition comprises from about 25 weight percent about 85 weight percent of an unsaturated carboxylic acid/unsaturated carboxylic acid ester terpolymer and from about 15 weight percent to about 75 weight percent of a hydrophilic cross-linkable polymerwherein the hydrophilic crosslinkable polymer is selected from the group consisting of poly(ethylene-vinyl acetate) with N-substituted acrylamide, acrylamide, N-substituted acrylamide based copolymers with a cross-linkable monomer, copolyacrylates, poly(ethylene vinyl alcohol) having less than about 3 percent hydrolysis, poly(ethylene glycol) grafted onto a polyolefin so that the poly(ethylene glycol) moieties can be cross-linked, poly(ethylene-vinyl acetate) with N-methylol acrylamide, N-methylol acrylamide, copolymer hydroxy ethyl methacrylate with methyl methacrylate, copolymer hydroxy ethyl methacrylate with methyl acrylate, copolymer poly(ethylene glycol) methacrylate with methyl methacrylate, and copolymer poly(ethylene glycol)-methacrylate with methyl acrylate; and,wherein the nonwoven fabric is water-dispersible in an aqueous environment having a divalent ion concentration of up to about 50 ppm and a monovalent ion concentration of up to about 0.4 weight percent.