Ostomy adhesive
AssigneeE. R. Squibb & Sons, Inc.
InventorsJames L. Chen, Rudolfo D. Cilento, John A. Hill, Anthony L. La Via
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Abstract
An adhesive composition adapted for use with an ostomy appliance consisting of a mixture of a hydrocolloid gum, a pressure sensitive adhesive, and a cohesive strengthening agent. The cohesive strengthening agent is either an inert natural or synthetic fibrous material, finely divided cellulose, a cross-linked dextran, a cross-linked carboxymethylcellulose, or a starch-acrylonitrile graft copolymer.
Claims7
An adhesive composition for medicinal purposes consisting essentially of a substantially homogenous mixture on a percent weight basis of from about 15% to about 40% of guar gum, locust bean gum, or mixtures thereof;
- from 0% to about 25% of pectin, gum karaya, or mixtures thereof provided that the total amount of guar gum, locust bean gum, gum karaya and pectin is from about 20% to about 55%;
- from about 40% to about 60% of a mixture of a low molecular weight polyisobutylene having a viscosity average molecular weight of from about 36,000 to about 58,000 on the Flory scale and butyl rubber having a viscosity average molecular weight of from about 300,000 to about 450,000 on the Flory scale, said polyisobutylene and said butyl rubber combined in a ratio of from about 3 to 1 to about 5 to 1 on a weight basis;
- and as a cohesive strengthening agent from about 2% to about 12% of an inert natural or synthetic fibrous material or from about 10% to about 30% of a finely divided cellulose, a finely divided substantially water insoluble cross-linked dextran, a finely divided substantially water insoluble cross-linked sodium carboxymethylcellulose, or a finely divided substantially water insoluble starch-acrylonitrile graft polymer.
Dependencies are inferred from the claim text.