Water-based contact cement
AssigneeBorden, Inc.
InventorsMaria A. Pereira, Rajaraman Iyer
Life of this patent
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Abstract
Water-based contact adhesives comprising: (1) a carboxylated polychloroprene latex which provides elastomeric properties; (2) a carboxylated poly(vinyl acetate-ethylene) aqueous emulsion which provides toughness to the adhesive; (3) a tackifier resin dispersion; (4) an organic or water soluble crosslinking agent for the carboxyl functionality of the polychloroprene and poly(vinyl acetate-ethylene); and (5) optionally an adhesion promoter.
Claims19
A water based contact adhesive comprising, by weight on a dry basis:
- A. about 35% to 55% of a carboxylated polychloroprene latex;
- B. about 15% to 35% of an emulsion of a carboxylated polymer of vinyl acetate and ethylene;
- C. about 20% to 40% of a tackifier resin dispersion;
- and
- D. an organic crosslinking agent in an amount sufficient to crosslink the carboxylated functions of the latex and the emulsion.
A water-based contact adhesive comprising, by weight on a dry basis:
- A. about 40% to 50% of carboxylated polychloroprene latex;
- B. about 20% to 30% of a carboxylated vinyl acetate-ethylene polymer emulsion;
- C. about 25% to 35% of a tackifier resin dispersion;
- D. about 0.05% to 0.3% of a water soluble crosslinking agent for crosslinking the carboxylated portion of the polymers;
- and
- E. about 0.1% to 0.5% of an organofunctional silane adhesion promoter.
A water-based contact adhesive comprising by weight on a dry basis:
- A. about 35% to 55% of carboxylated polychloroprene;
- B. about 15% to 35% of a carboxylated polymer of vinyl acetate and ethylene;
- C. about 20% to 40% of a tackifier resin;
- D. about 0.03% to 1% of a water soluble crosslinking agent for the carboxylated polychloroprene and vinyl acetate-ethylene polymer;
- and
- E. about 0.05% to 1% of an organofunctional silane adhesion promoter.
A water-based contact adhesive consisting essentially of, by weight on a dry basis:
- A. about 40% to 50% of a carboxylated polychloroprene latex;
- B. about 20% to 30% of a carboxylated vinyl acetate-ethylene polymer emulsion;
- C. about 25% to 35% of a tackifier resin dispersion;
- D. about 0.05% to 0.3% of a water soluble crosslinking agent for crosslinking the carboxylated portion of the polymers;
- and
- E. about 0.05% to 1% of an organofunctional silane adhesion promoter.
Dependencies are inferred from the claim text.