Aqueous polymeric dispersion and method for providing improved adhesion
AssigneeRohm and Haas Company
InventorsJames C. Bohling, Andrew Hejl, Alvin M. Maurice
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Abstract
This invention provides an aqueous polymeric dispersion, the polymer including, as polymerized units: from 0.1 to 10%, by weight based on the weight of the polymer, monomer selected from the group consisting of strong carboxylic acid monomers, sulfonic acid monomers and phosphorous-containing acid monomers, and from 0.01 to 3%, by weight based on the weight of the polymer, a moiety including the structure, wherein X═CY, N, or P and Y, independently ═H, C, N, O, Cl, Br, F, Si, S, or P. Also, a method for forming the aqueous polymeric dispersion and a method for providing a coating having improved adhesion to a substrate, particularly to a metal substrate, is provided.
Claims9
An aqueous polymeric dispersion, said polymer comprising, as polymerized units:
- from 0.1 to 10%, by weight based on the weight of said polymer, monomer selected from the group consisting of strong carboxylic acid monomers and phosphorous-containing acid monomers, and from 0.01 to 3%, by weight based on the weight of said polymer, a moiety comprising the structure,
- wherein X═CY or N and Y, independently ═H or CO2H.
A method for forming an aqueous polymeric dispersion comprising polymerizing from 0.1 to 10%, by weight based on the weight of said polymer, monomer selected from the group consisting of strong carboxylic acid monomers and phosphorous-containing acid monomers, and from 0.01 to 3%, by weight based on the weight of said polymer, a moiety comprising the structure,
- wherein X═CY or N and Y, independently ═H or CO2H.
A method for providing a coating having improved adhesion to a substrate comprising
- (a) forming a composition comprising an aqueous polymeric dispersion, said polymer comprising, as polymerized units:
- from 0.1 to 10%, by weight based on the weight of said polymer, monomer selected from the group consisting of strong carboxylic acid monomers and phosphorous-containing acid monomers, and from 0.01 to 3%, by weight based on the weight of said polymer, a moiety comprising the structure,
- wherein X═CY or N and Y, independently ═H or CO2H,
- (b) applying said composition to a substrate;
- and
- (c) drying, or allowing to dry, said applied composition.
Dependencies are inferred from the claim text.