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US 12,729,313 B2Granted
Aqueous composition
AssigneeDow Global Technologies LLC
InventorsYaguang Zhao, Jianming Xu, Wei Cui, Zhen Qian
Life of this patent
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Abstract
An aqueous composition comprises (a) an acrylic copolymer comprising structural units of an ethylenically unsaturated acetoacetyl functional monomer and (b) a specific multihydroxy-functional amine, which can provide good formaldehyde abatement property and reduced yellowing.
Claims11
An aqueous composition consisting of:
- (a) an acrylic copolymer comprising, by weight based on the weight of the acrylic copolymer, from 1% to 10% of structural units of an ethylenically unsaturated acetoacetyl functional monomer;
- (b) from 0.11% to 0.9% of a multihydroxy-functional amine, by weight based on the weight of the acrylic copolymer, having the structure of formula (I):
- where R1 is hydrogen, an alkyl group with from 1 to 10 carbon atoms, or —(CH2)x—OH, where x is from 1 to 5;
- m1 and m2 are each independently from 1 to 10;
- and m3 is from 0 to 10;
- and
- (c) optionally, one or more additional components selected from a primary amine, a pigment, an extender, a defoamer, a thickener, a wetting agent, a dispersant, a coalescent, a biocide, and mixtures of two or more thereof.
4 more elements
A method of reducing yellowing of a coating made from an aqueous composition, comprising:
- incorporating in the aqueous composition from 0.11% to 0.9% of a multihydroxy-functional amine, by weight based on the weight of the acrylic copolymer;
- wherein before incorporation of the multihydroxy-functional amine, the aqueous composition consists of an acrylic copolymer and optionally one or more additional components selected from a pigment, an extender, a defoamer, a thickener, a wetting agent, a dispersant, a coalescent, a biocide, and mixtures of two or more thereof, wherein the acrylic copolymer comprises, by weight based on the weight of the acrylic copolymer, from 1% to 10% of structural units of an ethylenically unsaturated acetoacetyl functional monomer;
- and
- wherein the multihydroxy-functional amine has the structure of formula (I):
- where R1 is hydrogen, an alkyl group with from 1 to 10 carbon atoms, or —(CH2)x—OH, where x is from 1 to 5;
- m1 and m2 are each independently from 1 to 10;
- and m3 is from 0 to 10.
4 more elements
Dependencies are inferred from the claim text.