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US 9,242,021 B2Granted
Adhesive composition
AssigneesCorium International, Inc., A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences
InventorsParminder Singh, Gary W. Cleary, Valery G. Kulichikhin, Sergey Antonov
Life of this patent
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Abstract
An adhesive composition is described which has improved initial tack, long-term adhesion, water uptake and translucency characteristics and may be prepared by melt extrusion. Uses of these compositions are also described, for example, their use as blister pads and wound dressings.
Claims31
An adhesive composition comprising:
- a hydrophobic polymer selected from polyisobutylenes, butyl rubbers, natural rubber adhesives, vinyl ether polymers, polysiloxanes, polyisoprenes, styrene-isoprene-styrene block copolymers, styrene-butadiene-styrene block copolymers, isobutylene-isoprene copolymers, butadiene acrylonitrile rubber, polychloroprenes, ethylene-propylene-diene terpolymers, acrylates, and combinations thereof;
- an elastomeric plasticizer;
- a tackifying resin;
- a hydrophilic polymer selected from poly(N-vinyl lactams), poly(N-vinyl amides), poly(N-vinyl acrylamides), poly(N-alkylacrylamides), polyacrylic acids, polymethacrylic acids, polyvinyl alcohol, polyvinyl amine, and copolymers and blends thereof;
- a third polymer capable of hydrogen bonding to the hydrophilic polymer, and clay particles comprised of a water-swellable clay mineral.
2 more elements
An adhesive composition comprising:
- a hydrophobic polymer selected from polyisoprenes, butyl rubbers styrene-isoprene-styrene block copolymers, and styrene-butadiene-styrene block copolymers;
- an elastomeric plasticizer selected from styrene-based plasticizers, low molecular weight polyisobutylenes, low molecular weight polyisoprene rubbers, and combinations thereof;
- a tackifying resin selected from hydrogenated hydrocarbon resins, hydrocarbon resins and synthetic polyterpene resins;
- a hydrophilic polymer selected from poly(N-vinyl lactams), poly(N-vinyl amides), poly(N-vinyl acrylamides), poly(N-alkylacrylamides), polyacrylic acids, polymethacrylic acids, polyvinyl alcohol, polyvinylamine, cellulose derivatives, polysaccharides, and copolymers and blends thereof;
- a third polymer selected from low molecular weight polyalkylene glycols, low molecular weight polyalcohols, monomeric and oligomeric alkylene glycols, ether alcohols, carbonic diacids, and alkane diols;
- and
- phyllosilicate particles comprised of a clay mineral that swells in the presence of water.
4 more elements
Dependencies are inferred from the claim text.