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US 6,485,827 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.
Claims13
An adhesive tape comprising:
- (a) a polymer film;
- (b) a primer coat on said polymer film;
- said primer coat comprising a natural rubber and at least one additional polymer, wherein said additional polymer is crosslinked, and wherein said additional polymer is selected from the group consisting of acrylic polymers, ethylene-vinyl acetate copolymers, ethylene-vinyl acetate-acrylic copolymers, styrene-butadiene copolymers, styrene-butadiene-acrylonitrile copolymers, polyisoprene polymers, polyisobutylene polymers, copolymers thereof, and mixtures thereof, and
- (c) an adhesive layer on said primer coat, said adhesive layer comprising (i) a natural rubber latex;
- and (ii) a tackifier.
2 more elements
An adhesive tape prepared by a method comprising steps of:
- (a) applying a primer comprising:
- (i) a natural rubber;
- (ii) at least one additional polymeric component containing functional groups suitable for crosslinking;
- and (iii) a crosslinking agent;
- to a polymer film to form a primer coat;
- and
- (b) applying to the primer coat an adhesive comprising:
- (i) a natural rubber latex;
- and (ii) a tackifier.
6 more elements
Dependencies are inferred from the claim text.