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US 6,489,024 B2Granted
Pressure sensitive adhesive tape containing natural rubber latex
AssigneeRohm and Haas Company
InventorsWilliam Bryan Griffith, Jr., Andrew Graham Bunn, Isabelle Ercolei Uhl, Kim Sang Ho
Life of this patent
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Abstract
An adhesive tape comprising: (a) a polymer film; (b) a primer coat on said polymer film; and (c) an adhesive layer on the primer coat comprising: (i) a natural rubber latex; and (ii) a tackifier.
Claims14
An adhesive tape comprising:
- (a) a polymer film;
- (b) a crosslinked primer coat on said polymer film;
- and
- (c) an adhesive layer on said primer coat, said adhesive layer comprising
- (i) a natural rubber latex;
- and (ii) a tackifier,
- wherein said primer coat is a crosslinked polymer selected from the group consisting of crosslinked acrylic polymers, crosslinked ethylene-vinyl acetate copolymers, crosslinked ethylene-vinyl acetate-acrylic copolymers, crosslinked styrene-butadiene copolymers, crosslinked styrene-butadiene-acrylonitrile copolymers, copolymers thereof, and mixtures thereof.
4 more elements
An adhesive tape prepared by a process comprising the steps of:
- (a) applying a primer to a polymer film to form a primer coat;
- (b) applying to said primer coat an aqueous adhesive comprising natural rubber latex and a tackifier;
- and
- (c) drying or allowing to dry said aqueous mixture.
1 more element
Dependencies are inferred from the claim text.