Curable aqueous composition
AssigneeRohm and Haas Company
InventorsMiao Yang, Zhaohui Qu, Yin Xue
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Abstract
The present invention provides a curable aqueous composition comprising a (co)polymer and an epoxy crosslinker. The (co)polymer comprises, as (co)polymerized units, from 0.05% to 10% by dry weight, based on total monomers of the (co)polymer, ethylenically unsaturated acidic monomers having at least two carboxylic acid groups, and the epoxy crosslinker is an aliphatic compound having at least two reactive oxirane groups. It further provides a method for forming a treated substrate and a substrate formed by the method.
Claims13
A curable aqueous composition comprising a (co)polymer and an epoxy crosslinker, wherein the (co)polymer comprises, as (co)polymerized units, from 0.05% to 10% by dry weight, based on total monomers of the (co)polymer, ethylenically unsaturated acidic monomers having at least two carboxylic acid groups, wherein said (co)polymer further comprises less than 2% by dry weight, based on total monomers of the (co)polymer, a (co)polymerized multi-ethylenically unsaturated monomer, and the epoxy crosslinker is an aliphatic compound having at least two reactive oxirane groups, wherein the epoxy crosslinker is selected from glycidyl ether, which is the reaction product of epichlorohydrin and aliphatic polyols, and glycidyl ester, which is the reaction product of epichlorohydrin and aliphatic dicarboxylic acids.
A method for forming a treated substrate comprising the steps of:
- i) forming a curable aqueous composition comprising a (co)polymer and an epoxy crosslinker, wherein said (co)polymer comprises, as (co)polymerized units, from 0.05% to 10% by dry weight, based on total monomers of the (co)polymer, ethylenically unsaturated acidic monomers having at least two carboxylic acid groups, wherein said (co)polymer further comprises less than 2% by dry weight, based on total monomers of the (co)polymer, a (co)polymerized multi-ethylenically unsaturated monomer, said epoxy crosslinker is an aliphatic compound having at least two reactive oxirane groups, wherein said epoxy crosslinker is selected from glycidyl ether, which is the reaction product of epichlorohydrin and aliphatic polyols, and glycidyl ester, which is the reaction product of epichlorohydrin and aliphatic dicarboxylic acids;
- ii) contacting a flexible substrate with the curable aqueous composition;
- and
- iii) heating the curable aqueous composition at a temperature of from 80° C. to 250° C.
Dependencies are inferred from the claim text.