Adhesive composition and masking article for producing precise paint lines
Assignee3M Innovative Properties Company
InventorsMahfuza B. Ali, Elizabeth E. Johnson, Michael D. Crandall
Life of this patent
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Abstract
An adhesive article for masking a portion of a substrate surface from a liquid coating applied to the surface includes a support having first and second opposed major surfaces, and a cationic or zwitterionic adhesive composition disposed on at least a portion of at least one of the first and second opposed major surfaces. The adhesive composition provides a barrier that impedes the migration of the coating past the edge of the adhesive article.
Claims13
An adhesive composition, the composition comprising one or more surfactants at least one of which has quaternary ammonium functionality and an emulsified, zwitterionic polymer, the polymer consisting essentially of the polymerized product of
- a. 0.2 wt % to 5 wt % based on the total weight of the polymer of an anionic monomer, the anionic monomer is an acrylic acid, methacrylic acid, a carboxylate salt thereof, or a mixture of two or more thereof, wherein the amount of carboxylate salt is determined based on the weight of the corresponding free acid;
- b. 50 wt % to 88 wt % based on the total weight of the polymer of an acrylate or methacrylate ester of an alcohol having between 8 and 12 carbon atoms, or a mixture of two or more thereof;
- c. 2 wt % to 45 wt % based on the total weight of the polymer of a cationic monomer, wherein the cationic monomer is an acrylate or methacrylate ester having an alkylammonium functionality;
- d. 10 wt % to 30 wt % based on the total weight of the polymer of vinyl acetate and optionally one of isobutyl acrylate and N-vinyl pyrrolidone;
- and
- e. 0 wt % to 2 wt % based on the total weight of the polymer of a crosslinker, wherein the onset of shear instability occurs between about 90 Pa and 300 Pa.
Dependencies are inferred from the claim text.