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US 12,215,245 B2Granted
Aqueous coating composition
AssigneesMidland Global Technologies LLC, Rohm and Haas Company
InventorsZhen Qian, Wei Cui, Jianming Xu
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Abstract
The present invention provides an aqueous dispersion and an aqueous coating composition comprising the aqueous dispersion that provides coatings with improved durable water and ink repellency properties without compromising early water repellency.
Claims10
An aqueous dispersion comprising:
- (A) an emulsion polymer with a Tg of −45° C. or more comprising, by weight based on the dry weight of the emulsion polymer,
- from 1.0% to 2.0% of structural units of a polymerizable surfactant having the structural formula:
- the structural formula:
- wherein:
- m1 is 1, 2, or 3;
- n is 2 to 50;
- and
- M is Li+, Na+, K+, or +NH4;
- from 1% to 5% of structural units of methacrylic acid, phosphoethyl methacrylate, or a mixture thereof;
- from 5% to 25% of structural units of a C10-C20-alkyl ester of (meth)acrylic acid;
- and
- from 67 to 93.5% of structural units of at least one of styrene, 2-ethylhexyl acrylate, or methyl methacrylate;
- and
- (B) from 1.5% to 20% by solids weight of a wax, based on the dry weight of the emulsion polymer.
11 more elements
Dependencies are inferred from the claim text.