Low viscosity high strength acid binder
AssigneeRohm and Haax Company
InventorPaul J. Steinwand
Life of this patent
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Abstract
A low viscosity, fast-curing binder for textile substrates is produced by admixing an aqueous emulsion copolymer latex with an aqueous solution copolymer formed by the copolymerization of an olefinically unsaturated polycarboxylic acid and an olefinically unsaturated monocarboxylic acid. Viscosities in the range of about 2 cps at 25% total solids to about 1000 cps at 35% total solids are realized by using solution copolymers containing about 40%-75% by weight of polycarboxylic acid.
Claims30
A fast-curing binder for textile substrates comprising an admixture of an aqueous emulsion copolymer latex and the product of copolymerization, in aqueous solution, of a mixture comprising;
- one or more first water-soluble comonomers having the general formula:
- ##STR4## wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of hydrogen, halogen, nitro, amino, and organic radicals;
- R.sub.4 is hydrogen;
- and X is a covalent bond or an organic radical;
- each of said one or more first water-soluble comonomers containing at least two carboxyl groups;
- and
- one or more second water-soluble comonomers having the general formula;
- ##STR5## wherein R.sub.6, R.sub.7, R.sub.8 are independently selected from the group consisting of hydrogen, halogen, nitro, amino, and organic radicals;
- R.sub.9 is hydrogen;
- and Y is a covalent bond or an organic radical;
- each of said one or more second water-soluble comonomers containing a single carboxyl group;
- said one or more first water-soluble comonomers being present in said mixture in a concentration of about 40% to about 75% by weight of total monomers;
- said one or more second water-soluble comonomers being present in said mixture in a concentration of about 25% to about 60% by weight of total monomers;
- said product of copolymerization being present in said admixture in a concentration of about 1% to about 20%, by dry weight of said latex.
A fast-curing, zero formaldehyde binder for textile substrates comprising an admixture of a non-formaldehyde emitting aqueous emulsion copolymer latex selected from the group consisting of alkenyl aromatic/conjugated diolefin, vinyl acetate/acrylate and all-acrylate copolymer latexes, and the product of copolymerization, in aqueous solution, of a mixture comprising:
- one or more first water soluble comonomers selected from the group consisting of the cis and trans forms of butenedioic acid and methylenesuccinic acid, the diacids resulting when one or more of the hydrogen atoms on the carbon chains of butenedioic acid or methylenesuccinic acid is replaced with methyl or ethyl groups, and the C.sub.1 to C.sub.5 semi-esters of said acids;
- and
- one or more second water soluble comonomers selected from the group consisting of acrylic acid and methacrylic acid;
- said product of copolymerization being admixed with said latex in an amount of about 1% to about 20%, by dry weight, based on the dry weight of said latex, said first water-soluble comonomer being present in said mixture in a concentration of about 40% to about 75% by weight of total monomers and said second water-soluble comonomer being present in said mixture in a concentration of about 25% to about 60% by weight of total monomers.
A fast-curing, zero formaldehyde binder for textile substrates comprising an admixture of the product of copolymerization, in aqueous solution, of a mixture of comonomers comprising itaconic acid and acrylic acid, said mixture comprising about 40% to about 50%, by weight of total monomers, of itaconic acid, and about 50% to about 60%, by weight of total monomers, of acrylic acid, with a non-formaldehyde emitting aqueous emulsion copolymer latex selected from the group consisting of alkenyl aromatic/conjugated diolefin, vinyl acetate/acrylate and all-acrylate copolymer latexes, in an amount of about 2% to about 5%, by dry weight, based on the dry weight of said latex.
A fast-curing, zero formaldehyde binder for textile substrates comprising an admixture of the product of copolymerization, in aqueous solution, of a mixture of comonomers comprising itaconic acid and methacrylic acid, said mixture comprising about 60% to about 75%, by weight of total monomers, of itaconic acid, and about 25% to about 40% of methacrylic acid, with a non-formaldehyde emitting aqueous emulsion copolymer latex selected from the group consisting of alkenyl aromatic/conjugated diolefin, vinyl acetate/acrylate and all-acrylate copolymer latexes, in an amount of about 2% to about 5%, by dry weight, based on the dry weight of said latex.
A fast-curing, zero formaldehyde binder for textile substrates comprising an admixture of the product of copolymerization, in aqueous solution, of a mixture of comonomers comprising about 40% to about 75%, by weight of total monomers, of itaconic acid, the balance of said mixture comprising a member selected from the group consisting of acrylic acid and methacrylic acid, with a non-formaldehyde emitting aqueous emulsion copolymer latex selected from alkenyl aromatic/conjugated diolefin, vinyl acetate/acrylate and all-acrylate copolymer latexes, in an amount between about 2% and about 5%, by dry weight, based on the dry weight of said latex.
Dependencies are inferred from the claim text.