Compositions For Use In Tape Adhesives, Binder Or Impregnate For A Body Fluid Adsorbent Device, E.g., A Surgical Adhesive Tape, Etc. Patents (Class 523/111)
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Patent number: 4574130Abstract: Compounds of the formula:CH.sub.2 .dbd.C(R)--COO--(CH.sub.2 --CH(CH.sub.3)--O).sub.x --(CH.sub.2 --CH.sub.2 --O).sub.y --OC--A--COOHor a salt thereof, whereinR is H or CH.sub.3,x is an integer from 2 to 20.y is an integer from 0 to 5,A is an alkylene, alkenylene, or phenylene radical such that A(COOH).sub.2 is a dibasic acid capable of forming an anhydride (A(CO).sub.2 O, are described. These are polymerizable compounds which have also surfactant properties. The compounds may be used to replace non-polymerizible surfactants in emulsion polymerization reactions, and preferably in those reactions which result in adhesive polymers which are suitable for surgical and medical use. Methods for preparing the compounds and pressure sensitive adhesives formed by copolymerization of the compounds with other acrylate monomers are also described.Type: GrantFiled: November 7, 1983Date of Patent: March 4, 1986Assignee: Smith & Nephew Associated Companies P.L.C.Inventors: William D. Potter, Sinan B. Kiamil
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Patent number: 4563184Abstract: A synthetic resin wound dressing (e.g., a burn wound dressing) is disclosed consisting essentially of a polymer, such as poly(2-hydroxyethylmethacrylate), referred to as PHEMA, an organic solvent, such as polyethylene glycol (PEG), and a hydrogen binding plasticizer, such as dimethylsulfoxide (DMSO). The plasticizer regulates the set-up time of the synthetic resin so that the more plasticizer present, the shorter the set-up time. The dressing may be applied to the wound site in the form of a paste for the in situ curing or setting thereof, or the dressing may be preformed and then applied to the wound site. A variety of drug agents (e.g., silver sulfadiazine) may be incorporated in the synthetic resin so as to result in the time released administration of the drug agent to the area of the skin (e.g., a burn wound site or the like) covered by the wound dressing. A method of treatment using this dressing is also disclosed.Type: GrantFiled: October 17, 1983Date of Patent: January 7, 1986Inventor: Bernard Korol
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Patent number: 4551490Abstract: Medical grade pressure sensitive adhesive compositions comprising a homogeneous mixture of one or more polyisobutylenes or blends of one or more polyisobutylenes and butyl rubber, one or more styrene radial or block type copolymers, mineral oil, one or more water soluble hydrocolloid gums, and a tackifier. One or more water swellable cohesive strengthening agents, an antioxidant, and various other optional ingredients may be included within the adhesive composition.Type: GrantFiled: December 30, 1983Date of Patent: November 5, 1985Assignee: E. R. Squibb & Sons, Inc.Inventors: Arthur Doyle, Frank M. Freeman
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Patent number: 4544683Abstract: A process for producing an inorganic-organic composition material based on gypsum and polyurethane comprising exposing calcined gypsum or anhydrite to the action of water in the presence of a polyurethane or polyurethane-urea which is dispersible in water and in the presence of up to about 20% by weight (relative to the total mixture) of an alcohol and up to about 20% by weight (relative to the total mixture) of another organic solvent, and allowing the composition to set while permitting any solvents which may be present to evaporate. The calcium sulphate may be on a textile support or the composition may be molded into flexible shaped articles of good mechanical properties.Type: GrantFiled: May 18, 1984Date of Patent: October 1, 1985Assignee: Bayer AktiengesellschaftInventors: Peter Muller, Kuno Wagner, Christian Wegner, Peter Schwabe
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Patent number: 4528365Abstract: A hydrogel which comprises polymerized moieties derivable from (i) at least one polymerizable cyclic (thio)ether and (ii) at least one hydrophilic homo- or copolymer.Type: GrantFiled: January 9, 1984Date of Patent: July 9, 1985Assignee: National Research Development CorporationInventor: Neil B. Graham
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Patent number: 4505976Abstract: 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.Type: GrantFiled: April 27, 1983Date of Patent: March 19, 1985Assignee: Johnson & Johnson Products, Inc.Inventors: Donald F. Doehnert, Arthur S. Hill
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Patent number: 4500670Abstract: Water absorbent compositions exhibiting increased gel strengths comprise a water-swellable hydrophilic polymer and an inorganic powder and are prepared by physically blending the polymer and powder. The compositions can be incorporated into film laminates and can be employed in preparing improved disposable diapers.Type: GrantFiled: November 22, 1983Date of Patent: February 19, 1985Assignee: The Dow Chemical CompanyInventors: Mark J. McKinley, Dan P. Sheridan
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Patent number: 4497914Abstract: Disclosed is a new breathable ostomy gasket composition derived from the non-aqueous reaction of a polyisocyanate and a polyoxyalkylene polyol moiety having a hydrophilic filler incorporated within the polyol moiety prior to the reaction of the polyisocyanate and the polyol.Type: GrantFiled: July 16, 1982Date of Patent: February 5, 1985Assignee: C. R. Bard, Inc.Inventors: Douglas Allen, Jr., Eric Flam
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Patent number: 4477325Abstract: A skin barrier composition is provided which is composed of a mixture of a copolymer resin of ethylene and vinyl acetate (EVA), at least one water absorbing particulate hydrocolloid or polymer, and a water-insoluble dry tack-providing elastomer such as polyisobutylene. The composition after mixing and molding, is subjected to ionizing irradiation to form cross-linked polymer networks of the EVA or EVA with another polymer cross-linking by irradiation. The compositions have exceptional properties for use as barrier sheets, rings, or strips in ostomy, wound drainage, and incontinence devices.Type: GrantFiled: November 8, 1983Date of Patent: October 16, 1984Assignee: Hollister IncorporatedInventor: Frank G. Osburn
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Patent number: 4473671Abstract: A cast material comprising a filled crystalline polyurethane is disclosed. The filler is present in an amount of from 30% to 60% by weight composition. The filler comprises from 20% to 60% by weight of calcium metasilicate fibers and from 40.degree. C. to 85.degree. C. by weight of silica.Type: GrantFiled: September 1, 1983Date of Patent: September 25, 1984Assignee: Johnson & Johnson Products, Inc.Inventor: Richard Green
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Patent number: 4452776Abstract: A hydrogel implant article of significant softness, pliability and elasticity when dry as well as when wet consists of a random cross-linked copolymer of 2-hydroxyethyl acrylate and an alkyl acrylate. The acrylate hydrogel article is useful, in one instance, as the material to produce a scleral buckle in retinal detachment surgery.Type: GrantFiled: March 12, 1982Date of Patent: June 5, 1984Assignee: Eye Research Institute of Retina FoundationInventor: Miguel F. Refojo
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Patent number: 4447570Abstract: A binder composition for nonwoven fabrics which comprises(a) a fugitive base salt of a phosphate ester surfactant or a carboxylate surfactant,(b) a latex comprising a vinyl acetate-ethylene-olefinically unsaturated carboxylic acid interpolymer colloidally suspended in water, the interpolymer containing about 0.5 to 7.0 weight percent olefinically unsaturated carboxylic acid and sufficient ethylene to provide the interpolymer with a glass transition temperature of from about -30.degree. to +20.degree. C., and(c) a polyvalent metal complex compound comprising a polyvalent metal ion and counter ions or ligands which hinder interaction of the polyvalent metal ion with the carboxylate and phosphate groups of the surfactant and interpolymer at room temperature, but at elevated temperature permit such interaction because the counter ions or ligands are expelled or are replaced by the anionic group of the surfactant and interpolymer.Type: GrantFiled: March 1, 1982Date of Patent: May 8, 1984Assignee: Air Products and Chemicals, Inc.Inventors: Gerald R. Cook, John G. Iacoviello, Robert K. Pinschmidt, Jr., George Davidowich
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Patent number: 4438258Abstract: A hydrogel which comprises polymerized moieties derivable from (i) at least one polymerizable cyclic (thio)ether and (ii) at least one hydrophilic homo- or copolymer.Type: GrantFiled: June 14, 1982Date of Patent: March 20, 1984Assignee: National Research Development CorporationInventor: Neil B. Graham
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Patent number: 4433072Abstract: Polymer compositions of a mixture of vinyl chloride polymer and polyurethane with tertiary amine and/or ammonium groups and heparin.Type: GrantFiled: April 29, 1983Date of Patent: February 21, 1984Assignee: Hospal-Sodip, S.A.Inventors: Christian Pusineri, Jean Goletto
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Patent number: 4412036Abstract: An absorbent composition comprising the reaction product at elevated temperature and pressure of hydrolyzed starch polyacrylonitrile graft copolymer and a polyhydric alcohol such as glycerol in the amount of between about 3% and 20%. The resulting composition exhibits good fluid absorbency and fast wicking properties and is particularly useful in producing absorbent laminated film for use in diapers, paper towels and the like. The present invention also relates to an improved absorbent laminated film prepared with the above absorbent composition and a method for preparing such absorbent laminated film.Type: GrantFiled: August 5, 1981Date of Patent: October 25, 1983Assignee: Grain Processing CorporationInventors: Lee C. Pedersen, Lyle F. Elmquist
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Patent number: 4393080Abstract: 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.Type: GrantFiled: December 24, 1981Date of Patent: July 12, 1983Assignee: E. R. Squibb & Sons, Inc.Inventors: John M. Pawelchak, James L. Chen, John G. Cryan, Anthony L. LaVia
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Patent number: 4393150Abstract: An adhesive bandage composition uses a blend of polyisobutylene, polybutene, butyl rubber with reinforcing fiber, filler material and zinc oxide blended under heat and rolled into a thin sheet. The sheet of adhesive material can be attached to a bandage material on one side and covered with a protective paper on the other and cut to shape for application to a body surface.Type: GrantFiled: May 7, 1982Date of Patent: July 12, 1983Inventor: Stanley Kresner
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Patent number: 4359047Abstract: A gelatinous adhesive composition and a tacky article of manufacture are produced by heating at least one polyhydric alcohol and at least one material selected from the group consisting of naturally occurring high molecular weight polysaccharide gums, other than gum Karaya, and resins which are a copolymer of a vinyl ether and a second component selected from maleic anhydride and its corresponding free acid, together in the absence of solvent to promote chemical reaction between the components and to drive off water produced in the reaction, the reaction being carried substantially to completion. In another embodiment, the components are at least one polyhydric alcohol, a resin which is a copolymer of a vinyl ether and a second component selected from maleic anhydride and its corresponding free acid, and a material selected from the group consisting of gelatin and naturally occurring high molecular weight polysaccharide gums.Type: GrantFiled: March 20, 1980Date of Patent: November 16, 1982Assignee: Advance Tapes (U.K.) LimitedInventor: Jan J. Potaczek
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Patent number: 4356819Abstract: An article of manufacture with adhesive properties comprising a gelatinous adhesive composition dispersed in a plastics matrix. The gelatinous adhesive composition is the resulting product of heating together in the absence of solvent at least one polyhydric alcohol and at least one material selected from the group consisting of gelatin, naturally occurring high molecular weight polysaccharide gums, and resins which are a copolymer of a vinyl ether and a second component selected from organic acid anhydrides and their corresponding free acids. Heating promotes a chemical reaction between the components and also drives off water produced in the reaction which is carried substantially to completion.Type: GrantFiled: March 20, 1980Date of Patent: November 2, 1982Assignee: Advance Tapes (U.K) LimitedInventor: Jan J. Potaczek
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Patent number: 4350785Abstract: Protective adhesive pastes for use with ostomy appliances which are formulated as mixtures of water-absorbing particulate hydrocolloid gums and organic solvent solutions of adhesive film-forming resins are provided with increased resistance to urine and intestinal fluids by incorporating a small amount of colloidal silica, preferably, fumed silica.Type: GrantFiled: May 22, 1981Date of Patent: September 21, 1982Assignee: Hollister IncorporatedInventor: Wagdi W. Habib