Adhesive compositions
First Claim
1. An adhesive composition suitable for medical purposes comprising a substantially homogeneous mixture on a percent weight basis of from about 30% to about 70% of a pressure sensitive viscous adhesive material and an optional thermoplastic elastomer said pressure sensitive adhesive material selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, and polyisobutylenes and said optional thermoplastic elastomer selected from the group consisting of medium molecular weight polyisobutylene, butyl rubber, and styrene copolymers and from about 3% to about 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid.
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Accused Products
Abstract
Medical grade adhesive compositions comprising a homogeneous blend of one or more pressure sensitive adhesive materials and one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated such as gluten and long chain polymers of methyl vinyl ether/maleic acid are disclosed. The compositions may also include one or more water soluble hydrocolloid gums and may additionally contain one or more water swellable cohesive strengthening agents.
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Citations
31 Claims
- 1. An adhesive composition suitable for medical purposes comprising a substantially homogeneous mixture on a percent weight basis of from about 30% to about 70% of a pressure sensitive viscous adhesive material and an optional thermoplastic elastomer said pressure sensitive adhesive material selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, and polyisobutylenes and said optional thermoplastic elastomer selected from the group consisting of medium molecular weight polyisobutylene, butyl rubber, and styrene copolymers and from about 3% to about 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid.
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5. An adhesive composition suitable for medical purposes comprising a substantially homogeneous mixture on a percent weight basis of from about 30% to about 70% of a pressure sensitive viscous adhesive material and an optional thermoplastic elastomer said pressure sensitive viscous adhesive material selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, and polyisobutylenes and said optional thermoplastic elastomer selected from the group consisting of medium molecular weight polyisobutylenes, butyl rubber, and styrene copolymers;
- from about 3% to about 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid;
up to about 50% by weight of one or more water soluble hydrocolloids selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof; and
up to about 30% by weight of one or more water swellable cohesive strengthening agents selected from the group consisting of water insoluble cross-linked sodium carboxymethylcellulose, water insoluble starch-acrylonitrile graft polymer, and water insoluble cross-linked dextran provided that the water soluble hydrocolloids and water insoluble cohesive strengthening agents together are no more than about 60% by weight of said adhesive composition. - View Dependent Claims (6, 7)
- from about 3% to about 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid;
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8. An adhesive composition suitable for medical purposes comprising a substantially homogeneous mixture on a percent weight basis of from about 40% to about 50% of a pressure sensitive adhesive component comprising low molecular weight polyisobutylene and an optional thermoplstic elastomer selected from the group consisting of medium molecular weight polyisobutylene, butyl rubber, and styrene-isoprene-styrene copolymers;
- from about 10% to about 35% of a polymer selected from the group consisting of poly(methyl vinyl ether/maleic acid), poly(methyl vinyl ether/maleic anhydride), and calcium, sodium poly(methyl vinyl ether/maleic acid);
from about 15% to about 40% of one or more water soluble hydrocolloids selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof; and
up to about 30% of one or more water swellable cohesive strengthening agents selected from the group consisting of water insoluble cross-linked sodium carboxymethylcellulose, water insoluble starch-acrylonitrile graft copolymer, water insoluble cross-linked dextran, and mixtures thereof provided that the water soluble hydrocolloids and water swellable cohesive strengthening agents together are no more than about 55% by weight of said composition. - View Dependent Claims (9, 10, 11, 12, 13, 14)
- from about 10% to about 35% of a polymer selected from the group consisting of poly(methyl vinyl ether/maleic acid), poly(methyl vinyl ether/maleic anhydride), and calcium, sodium poly(methyl vinyl ether/maleic acid);
- 15. A skin barrier comprising an adhesive layer having a thin continuous or discontinuous polymeric film laminated to one surface of the adhesive, said adhesive comprising a substantially homogeneous mixture on a percent weight basis of from about 30% to about 70% of a pressure sensitive viscous adhesive material and an optional thermoplastic elastomer said pressure sensitive adhesive material selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, and polyisobutylenes and said optional thermoplastic elastomer selected from the group consisting of medium molecular weight polyisobutylenes, butyl rubber, and styrene copolymers and from about 3% to 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid.
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20. A skin barrier comprising an adhesive layer having a thin continuous or discontinuous polymeric film laminated on one surface of the adhesive, said adhesive comprising a substantially homogeneous mixture on a percent weight basis of from about 30% to about 70% of a pressure sensitive viscous adhesive material and an optional thermoplastic elastomer said pressure sensitive adhesive material selected from the group consisting of natural rubber, silicone rubber, acrylonitrile rubber, polyurethane rubber, and polyisobutylenes and said optional thermoplastic elastomer selected from the group consisting of medium molecular weight polyisobutylenes, butyl rubber, and styrene compolymers;
- from about 3% to about 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid;
up to about 50% by weight of one or more water soluble hydrocolloids selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof; and
up to about 30% by weight of one or more water swellable cohesive strengthening agents selected from the group consisting of water insoluble cross-linked sodium carboxymethylcellulose, water insouble starch-acrylonitrile graft copolymer, and water insoluble cross-linked dextran provided that the water soluble hydrocolloids and water insoluble cohesive strengthening agents together are no more than about 60% by weight of said adhesive composition. - View Dependent Claims (21, 22, 23)
- from about 3% to about 60% by weight of one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated selected from the group consisting of gluten and long chain polymers of methyl vinyl ether/maleic acid;
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24. A skin barrier comprising an adhesive layer having a thin continuous or discontinuous olymeric film laminated to one surface of the adhesive, said adhesive comprising a substantially homogeneous mixture on a percent weight basis of from about 40% to about 50% of a pressure sensitive adhesive component comprising low molecular weight polyisobutylene and an optional thermoplastic elastomer selected from the group consisting of medium molecular weight polyisobutylene, butyl rubber, and styrene-isoprenestyrene copolymers;
- from about 10% to about 35% of a polymer selected from the group consisting of poly(methyl vinyl ether/maleic acid), poly(methyl vinyl ether/maleic anhydride), and calcium, sodium poly(methyl vinyl ether/maleic acid);
from about 15% to about 40% of one or more water soluble hydrocolloids selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof; and
up to about 30% of one or more water swellable cohesive strengthening agents selected from the group consisting of water insoluble cross-linked sodium carboxymethylcellulose, water insoluble startch-acrylonitrile graft copolymer, water insoluble cross-linked dextran, and mixtures thereof provided that the water soluble hydrocolloids and water swellable cohesive strengthening agents together are no more than about 55% by weight of said composition. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
- from about 10% to about 35% of a polymer selected from the group consisting of poly(methyl vinyl ether/maleic acid), poly(methyl vinyl ether/maleic anhydride), and calcium, sodium poly(methyl vinyl ether/maleic acid);
Specification