Stoma seal adhesive
AssigneeJohnson & Johnson Products, Inc.
InventorsDonald F. Doehnert, Arthur S. Hill
Life of this patent
Estimating the term…
Abstract
A pressure-sensitive adhesive having the capacity to absorb at least about 7 percent of its own weight in water and having a desirable combination of plasticity and wet-stick characteristics, as well as good dry skin adhesion. An adhesive composition particularly suitable for use as a stoma seal adhesive comprises (I) from about 30 to about 80 parts by weight each of (a) a pressure-sensitive adhesive component comprising a synthetic or natural gum-like substance and (b) a moisture absorbing component comprising a synthetic carbohydrate or natural water soluble or swellable hydrocolloid together with (II) from about 2 percent to about 20 percent by weight silica, based on the total weight of the adhesive composition.
Claims16
A pressure-sensitive adhesive composition having a Williams Plasticity Number of from about 2 mm to 4 mm and the capacity to absorb at least about 7 percent of its own weight in water comprising:
- (a) from about 30 to about 80 parts by weight of a pressure-sensitive adhesive component selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, polyisobutylene, acrylic polymers and mixtures thereof,
- (b) from about 30 to about 80 parts by weight of a moisture absorbing component selected from the group consisting of karaya gum, locust bean gum, sodium acrylate polymers, polyvinylalcohol, powdered pectin, gelatin, carboxymethylcellulose, high molecular weight polyethylene glycol, and mixtures thereof;
- and
- (c) from about 2 percent to about 20 percent by weight based on the total weight of said adhesive composition of silica.
A pressure-sensitive adhesive composition having a Wiliams Plasticity Number of from about 2 mm to 4 mm and the capacity to absorb at least about 7 percent of its own weight in water comprising:
- (a) from about 40 to about 60 parts by weight of a pressure-sensitive adhesive component selected from the group consisting of polyisobutylene and acrylic polymers and mixtures thereof;
- (b) from about 40 to about 60 parts by weight of a moisture absorbing component selected from the group consisting of karaya gum, powdered pectin, gelatin, carboxymethylcellulose and mixtures thereof, and;
- (c) from about 4 percent to about 12 percent by weight based on the total weight of said adhesive composition of silica.
Dependencies are inferred from the claim text.