Derived From Carboxylic Acid Or Derivative Patents (Class 524/24)
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Patent number: 11820116Abstract: The invention relates to an aqueous binder composition for mineral fibers comprising at least one polyelectrolytic hydrocolloid.Type: GrantFiled: May 11, 2017Date of Patent: November 21, 2023Assignee: ROCKWOOL A/SInventor: Thomas Hjelmgaard
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Patent number: 11680170Abstract: An emulsion composition includes an acrylic polymer, a metal silicate, and water. Advantageously, the emulsion composition provides coatings with superior adhesion of coatings to a concrete, clay, or ceramic substrate. In particular, the emulsion composition provides improved adhesion of the silicate primer to the concrete, clay, or ceramic substrate and strong cohesion between the primer and top coat paint allow for a much better overall performance. A method for applying the emulsion composition is also provided.Type: GrantFiled: January 29, 2020Date of Patent: June 20, 2023Assignee: Behr Process CorporationInventors: Jonathan William Crowe, Gregory Allen Williams, Jens Hentschel, David Anthony Ruiz, Promita Datta
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Patent number: 11552297Abstract: Provided is a binder composition for lithium ion secondary battery electrode-use that reduces internal resistance of a lithium ion secondary battery while also providing the lithium ion secondary battery with excellent life characteristics. The binder composition contains a copolymer X and a solvent. The copolymer X is obtained from a monomer composition X that contains at least 20.0 mass % and no greater than 75.0 mass % of an ethylenically unsaturated carboxylic acid compound (A) composed of either or both of an ethylenically unsaturated carboxylic acid and an ethylenically unsaturated carboxylic acid salt, and at least 20.0 mass % and no greater than 75.0 mass % of a copolymerizable compound (B) that has an ethylenically unsaturated bond and a solubility of at least 7 g in 100 g of water at 20° C. The copolymer X has a degree of swelling in electrolysis solution of less than 120 mass %.Type: GrantFiled: June 4, 2015Date of Patent: January 10, 2023Assignee: ZEON CORPORATIONInventors: Kenya Sonobe, Yusuke Adachi, Takuya Kaneda, Yasuhiro Isshiki
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Patent number: 9855722Abstract: A composite article includes a ceramic part, a plastic part, and an adhesive layer connecting the ceramic part to the plastic part. The adhesive layer includes polyvinyl acetate, polyvinyl alcohol, dibutyl phthalate, and sec-butyl acetate.Type: GrantFiled: April 17, 2013Date of Patent: January 2, 2018Assignees: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., FIH (Hong Kong) LimitedInventors: Li-Hong Na, Xu Liu
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Patent number: 9765212Abstract: A rubbery polymer comprising: (a) butyl acrylate or a mixture of butyl acrylate and 2-ethylhexyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate, and ethyl acrylate, (c) acrylonitrile, (d) styrene, (e) a half ester maleate soap, and (f) a crosslinking agent selected from allyl methacrylate, and mixtures of allyl methacrylate with glycidyl methacrylate, trimethylolpropanetrimethyl acrylate, dicyclopentenyloxyethyl methacrylate and divinylbenzene.Type: GrantFiled: May 5, 2014Date of Patent: September 19, 2017Assignee: OMNOVA SOLUTIONSInventors: Sophie Drillieres, Eric Medard, Bernard Nigen
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Patent number: 8901210Abstract: The present embodiment relates to a Plasticizer, which is fabricated by mixing monomers of biodegradable polymer with bio-molecules subsequently to deal the mixture with thermal treatment. The Biodegradable material comprising the Plasticizer has high melt index which is contributive for the processing of thermal processing, and the microwave-tolerance and water-resistance of the material makes the material suitable for food packaging.Type: GrantFiled: December 3, 2013Date of Patent: December 2, 2014Assignee: Industrial Technology Research InstituteInventors: Hsiu-Yu Cheng, Guang-Way Jang, Yin-Ju Yang, Shu-Chen Li
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Patent number: 8883945Abstract: A compound of the formula R1.[(AO)n.—R2]m (I) where: R1 is the residue of a group having at least m active hydrogen atoms; AO is an alkylene oxide residue; each n is independently from 1 to 100; m is at least 2; and each R2 is independently H, a C1 to C21 hydrocarbyl, or an acyl group —OC.R3, where R3 is a C1 to C21 hydrocarbyl group, wherein on average greater than one of the R2 groups is or comprises a C4 to C21 hydrocarbyl group comprising at least two ethylenic double bonds. The compounds are particularly suitable for use in preparing aqueous emulsions or dispersions of resins and polymers, especially alkyd resins.Type: GrantFiled: December 15, 2004Date of Patent: November 11, 2014Assignees: Croda International PLC, Croda Americas LLCInventors: William Harry McNamee, Trevor Graham Blease, Johnny Denis Grade, Hanamanthsa Shankarsa Bevinakatti
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Publication number: 20140132661Abstract: Provided is an inkjet recording method which minimizes blur and achieves excellent fixing to a recoding medium. This inkjet recording method is characterized by adhering a receiving solution (A) to at least areas on a recording medium (R) which are to be printed with an inkjet ink (I) or the whole surface of the medium (R) which is to be printed, said receiving solution (A) being a solution obtained by dissolving (inclusive of dispersing) one or more metal salts (S) selected from among at least divalent, calcium salts, magnesium salts, nickel salts, aluminum salts, boron salts, and zinc salts and one or more resins (B) having hydrophilic groups in an aqueous solvent in such amounts that the concentrations of the metal salts (S) and the resins (B) fall within the range of 0.005 to 2.0 mol/l and within the range of 0.5 to 20 mass % respectively, and then applying the inkjet ink (I) to areas where the metal salts are present in an adhered state to carry out printing.Type: ApplicationFiled: March 27, 2012Publication date: May 15, 2014Applicants: DNP FINE CHEMICALS CO., LTD., DAI NIPPON PRINTING CO., LTD.Inventors: Yoshiki NOZAKA, Fumie YAMAZAKI, Mitsuyoshi TAMURA, Yukio SUGITA, Takao OTOMARU, Masaki INUMARU, Naoki SHIRAISHI
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Patent number: 8623944Abstract: The present invention relates to a Plasticizer, which is fabricated by mixing monomers of biodegradable polymer with bio-molecules subsequently to deal the mixture with thermal treatment. The Biodegradable material comprising the Plasticizer has high melt index which is contributive for the processing of thermal processing, and the microwave-tolerance and water-resistance of the material makes the material suitable for food packaging.Type: GrantFiled: December 19, 2011Date of Patent: January 7, 2014Assignee: Industrial Technology Research InstituteInventors: Hsiu-Yu Cheng, Guang-Way Jang, Yin-Ju Yang, Shu-Chen Lee
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Publication number: 20130303665Abstract: Gels and gel-containing materials, including hydrogels, are described. A gel can be formed by blending polyacrylic acid (PAA) and a polyglycol, such as polytetramethylene ether glycol (PTMEG) at room temperature and, in some cases, without using a catalyst. The blend material can be used to form soft or hard materials, films and particles. The blend material can be combined with vinyl monomers and polymerize to form a hydrogel. The hydrogel can have a high mechanical strength and high water absorbency.Type: ApplicationFiled: November 8, 2011Publication date: November 14, 2013Inventors: Naihong Li, Michael C. Williams
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Patent number: 8268915Abstract: The present invention relates to a liquid mixture comprising a first polymer, which is a poly(acid), a second polymer, which is a poly(ether), and at least one salt, wherein the molecular weight of the poly(acid) is in the range of 1000-100,000 Da. The second polymer is selected to be capable of forming immiscible aqueous phases in the presence of the poly(acid) and salt. The poly(acid) may be selected from the group consisting of poly(acrylic acid) and poly(methacrylic acid), and the second synthetic polymer may comprise ethylene oxide. The invention may be used for separation of biomolecules, cells or particles.Type: GrantFiled: June 16, 2008Date of Patent: September 18, 2012Assignee: GE Healthcare Bio-Sciences ABInventors: Hans O. Johansson, James Van Alstine, Rolf Hjorth, Karol Lacki, Emmanuel Macedo, Gunnar Malmquist, Jamil Shanagar
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Patent number: 8247478Abstract: A thermoplastic resin composition of the present invention has high impact resistance, not lowering the weather resistance thereof, even though the amount of an impact resistance improver added thereto is small. The thermoplastic resin composition contains 100 parts by weight of (A) a thermoplastic resin and from 0.5 to 20 parts by weight of (B) a graft copolymer, wherein the graft copolymer (B) contains from 70% to 99% by weight of a crosslinked core (b2) prepared through polymerization of a monomer for the core (b2), containing 70% by weight or more of an acrylate, in the presence of from 0.5% to 20% by weight of a non-crosslinked seed (b1) having a weight-average molecular weight of 40,000 or less, and from 0.5% to 10% by weight of a shell (b3) prepared through polymerization of a monomer for the shell (b3) containing 50% by weight or more of a methacrylate, and the thermoplastic composition further contains from 0.01 to 3.Type: GrantFiled: February 7, 2007Date of Patent: August 21, 2012Assignee: Kaneka CorporationInventor: Toru Terada
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Publication number: 20100056672Abstract: This invention relates to a new class of blend containing segments with a peptide base of hydrolysed proteins and gelatin, and segments with a polymer base consisting of variously substituted polyethylenes such as EVA and EVAL, and a method for their preparation.Type: ApplicationFiled: April 10, 2008Publication date: March 4, 2010Inventors: Luciana Sartore, Maurizio Penco, Andrea Sassi, Massimo Neresini, Manuela Cinzia Candido
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Patent number: 6545082Abstract: A coating material contains at least one substance selected from the group consisting of water-soluble resin such as water-soluble acryl resin, resin emulsion such as acryl emulsion and solvent resin such as solution of urethane resin into a solvent (A); resin beads such as polyethylene beads (B); and at least one substance selected from the group consisting of soluble protein such as collagen and resin emulsion incompatible with the (A) such as ethylene-acryl copolymer (C). (A) improves adhesion with a base member, (B) improves heat sealability and (C) improves surface lubricity and anti-blocking properties. Further, water-soluble amine additive (D) may be added to improve adhesion with olefin base member.Type: GrantFiled: December 16, 1999Date of Patent: April 8, 2003Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Takaharu Yasue
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Patent number: 6498204Abstract: A resin composition contains a thermoplastic elastomer, natural organic, and silicone. As the thermoplastic elastomer, an olefin thermoplastic elastomer, such as a ethylene-propylene copolymer or the like, can be used. As the thermoplastic elastomer, a styrene thermoplastic elastomer, such as a styrene-butadiene copolymer or the like, can be used. As the natural organic, silk, cellulose, collagen or the like can be used. It is advisable that the content of the natural organic is 5-30 wt %, and the content of silicone is 0.3-10 wt %. Where the natural organic is a fine powder state, it is preferable that the particle size is less than 300 &mgr;m. Moldings are sheets or the like, formed by using the aforementioned resin composition.Type: GrantFiled: April 10, 1997Date of Patent: December 24, 2002Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Atsuhiko Ubara
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Patent number: 6284819Abstract: The present invention provides a recording medium comprising a substrate having a glossy coating thereon, wherein the glossy coating comprises a binder and first and second groups of particles, wherein: (a) the first group comprises metal oxide particles, wherein the metal oxide particles are aggregates of smaller, primary particles, (b) the mean diameter of the primary particles is less than about 100 nm, (c) the mean diameter of the aggregates is from about 100 nm to about 500 nm, (d) the mean diameter of the particles in the second group is less than about 50% of the mean diameter of the aggregates in the first group, and (e) the ratio of particles in the first group to particles in the second group is from about 0.1:1 to about 10:1 by weight. The glossy coating of the inventive recording medium has an excellent rate of liquid absorption, a relatively high liquid absorption capacity, excellent adhesiveness, and a non-brittle, crack-resistant, glossy surface.Type: GrantFiled: July 1, 1999Date of Patent: September 4, 2001Assignee: Cabot CorporationInventors: Michael S. Darsillo, David J. Fluck, Rudiger Laufhutte
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Patent number: 6001913Abstract: Novel latex or emulsion compositions containing internally plasticizing and crosslinkable long-chain alkenol ester monomers are disclosed and claimed. Preferred embodiments include latex formed from acrylate or methacrylate esters of long-chain alkenols. A process for the synthesis of the latex composition is also disclosed, which involves (a) esterification of a long-chain alkenol with an ethylenically unsaturated carboxylic acid; (b) polymerization of the ethylenically unsaturated ester in an aqueous phase with at least one other copolymerizable monomer; and (b) blending of so formed polymer with at least one drier and a surfactant to form the novel latex or emulsion compositions. These compositions form films at low minimum film forming temperatures (MFT) ranging from -5 to 10.degree. C. and cure to above ambient glass transition (T.sub.g) polymers without the use of traditional organic cosolvents which contribute to environmental pollution via volatile organic compounds (VOCs) emissions.Type: GrantFiled: December 24, 1996Date of Patent: December 14, 1999Assignee: The University of Southern MississippiInventors: Shelby Freland Thames, Kamlesh Gopichand Panjnani, Olan Stanley Fruchey
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Patent number: 5922789Abstract: The invention is a ready-to-use, water-redispersible powder composition useful for preparing photographic recording materials or inkjet recording materials, which comprises a mixture containing polymers made from ethylenically unsaturated monomers and gelatin, wherein the polymers are prepared by emulsion polymerization in the presence of at least one emulsifier selected from emulsifiers with ionic and nonionic groups and if exclusively ionic emulsifiers are used, the copolymerization is carried out in the presence of comonomers which contain one or more groups selected from --COOH, --OH, SO.sub.3.sup.-, NCH.sub.2 OH and --C.dbd.O.Type: GrantFiled: April 9, 1998Date of Patent: July 13, 1999Assignee: Wacker-Chemie GmbHInventors: Klaus Kohlhammer, Wolfgang Roth-Greiner, Reiner Figge, Reinhard Haerzschel
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Patent number: 5910518Abstract: A hydrophilic oxygen permeable contact lens having a front surface which is not to be in contact with the cornea of a human eye when the contact lens is worn on the human eye, wherein at least the front surface of the contact lens is coated with a hydrophilicity rendering material which renders the front surface hydrophilic and which is selected from the group consisting of: (A) hydrophilic silicone oil which is represented by the formula given in the specification and whose viscosity at a temperature of 20.degree. C. is not higher than 5,000 centipoise; (B) polysaccharide or its derivative; and (C) denatured collagen whose average molecular weight is in a range of 400.about.100,000. Also disclosed is a method of producing the hydrophilic oxygen permeable contact lens.Type: GrantFiled: August 12, 1997Date of Patent: June 8, 1999Assignee: Menicon Co., Ltd.Inventors: Kazuhiko Nakada, Naomi Saito, Misako Nishibayashi, Atsuyuki Nakamura, Yasuhito Hishida
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Patent number: 5902844Abstract: Methods of forming solid pharmaceutical compositions comprise solubilizing water-soluble polymers and amino acid-based components having molecular weights ranging from about 100 daltons to about 200,000 daltons or pharmaceutically acceptable salts thereof in solvents; and separating the solvents from the water-soluble polymers and the amino acid-based components or pharmaceutically acceptable salts thereof to form solid pharmaceutical compositions comprising the water-soluble polymers and the amino acid-based components or pharmaceutically acceptable salts thereof.Type: GrantFiled: February 2, 1998Date of Patent: May 11, 1999Assignee: Applied Analytical Industries, Inc.Inventor: Edward S. Wilson
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Patent number: 5830932Abstract: An external incontinence device which reduces or eliminates maceration, skin irritation, microbial skin infiltration and infection, and urinary tract infection associated with conventional urinary catheters and incontinence devices is provided. Devices of the invention comprise, in a plurality of configurations, a housing having an outlet conduit, and several alternative means for attaching the housing to a para-meatal genital surface, including a barrier disc comprising various adhesive and medically active substances which form an occlusive adhesive seal with the para-meatal surface. Adhesive leaves made of fluid-absorptive or fluid-permeable materials are provided to adhere the device to skin while permitting removal of moisture from the underlying skin surface, thus eliminating maceration. Vapor permeable adhesives on the interior surface of the attachment elements, and a microbial-barrier layer provided on inner surfaces of the several configurations of housings are also provided.Type: GrantFiled: November 8, 1996Date of Patent: November 3, 1998Assignee: BioDerm, Inc.Inventor: Dennis M. Kay
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Patent number: 5346935Abstract: The hydrogel of the invention contains polyvinyl alcohol (a hydrogel support), and a high water-absorbent resin and/or a hydrophilic high molecular compound, which are capable of containing a large amount of water. The rate of evaporation of water from this hydrogel is slow. The hydrogel retains water for a long time and releases an active ingredient gradually. The hydrogel containing a pharmacologically active substance is useful as a pharmaceutical preparation.Type: GrantFiled: November 2, 1993Date of Patent: September 13, 1994Assignee: Takeda Chemical Industries, Ltd.Inventors: Yasuyuki Suzuki, Hisayoshi Shimizu
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Patent number: 5218030Abstract: A novel curable polyphenylene ether resin composition is disclosed, which comprises (a) a curable polyphenylene ether resin having at least one group selected from the group consisting of an allyl group and a propargyl group and (b) at least one cyanurate. The resin composition has excellent storage stability, film-forming properties and melt moldability. If desired, a fire retardant, optionally together with an antimony-containing auxiliary fire retardant, and/or a reinforcement is incorporated into the resin composition in order to improve the fire retardance and mechanical properties of the resin composition, respectively. By curing the resin composition, a cured polyphenylene ether resin composition comprising a chloroform nonextractable polyphenylene ether resin component and a chloroform extractable, polyphenylene ether-containing component is obtained, which has excellent chemical resistance, electrical properties, dimensional stability and heat resistance.Type: GrantFiled: February 7, 1990Date of Patent: June 8, 1993Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Teruo Katayose, Hiroji Oda, Haruhisa Sasaki
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Patent number: 4952618Abstract: Hydrocolloid adhesive compositions are disclosed comprising a rubbery elastomeric base having dispersed therein hydrocolloid particles, at least some of which are polycationic hydrocolloid particles. The compositions have enhanced resistance to breakdown by body fluids and are especially useful as wound dressings.Type: GrantFiled: May 3, 1988Date of Patent: August 28, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Roger A. Olsen
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Patent number: 4737533Abstract: Dry material which can be hydrated into an aqueous gel comprising (1) a matrix comprising a macromolecular substance A, capable of forming a porous aqueous gel when it is in the presence of water, (2) a water-soluble linear polymer B, (3) a plasticizer for the macromolecular substance A and, (4) dispersed in the matrix, particles of a polymer C obtained from at least one water-immiscible monomer.The material can be obtained by mixing an aqueous solution of A with the polymer B, the plasticizer and a latex of polymer C, followed by cooling, shaping and drying of the aqueous gel obtained.The dry material can be used in biological applications after rehydration.Type: GrantFiled: April 10, 1987Date of Patent: April 12, 1988Assignee: Rhone-Poulenc ChimieInventors: Dominique Charmot, Jean-Claude Daniel
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Patent number: 4689359Abstract: A polymer composition comprising:(a) from 1 to 60 weight percent of recurring units derived from a polymerized vinyl monomer having a primary amine addition salt component or an aminostyrene addition salt component;(b) from 0 to 50 weight percent of recurring units derived from a nonionic polymerized hydrophilic vinyl monomer; and(c) from 20 to 98 weight percent of recurring units derived from a polymerized hydrophobic nonionic vinyl monomer is disclosed for use in coating compositions for polyester supports.Type: GrantFiled: August 22, 1985Date of Patent: August 25, 1987Assignee: Eastman Kodak CompanyInventors: Ignazio S. Ponticello, Edward P. Otocka
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Patent number: 4668714Abstract: An alanine dosimeter that enables accurate and simple measurement of the absorbed dose of an ionizing radiation is disclosed. The dosimeter uses as an alanine binder agent at least one member selected from among synthetic rubbers, and natural rubber.Type: GrantFiled: August 29, 1985Date of Patent: May 26, 1987Assignee: Japan Atomic Energy Research InstituteInventors: Yousuke Morita, Tadao Seguchi, Takuji Kojima, Ryuichi Tanaka
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Patent number: 4638024Abstract: A polymer composition of excellent compatibility which comprises a block copolymer containing a polyvinyl alcohol polymer unit as one constituent and a polymer unit having an ionic group as another constituent, and protein. It is suitable, especially when the protein is gelatin, for making a photographic emulsion, microcapsules, or a photosensitive material, among others.Type: GrantFiled: May 3, 1985Date of Patent: January 20, 1987Assignee: Kuraray Co., Ltd.Inventors: Toshiaki Sato, Junnosuke Yamauchi, Takuji Okaya
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Patent number: 4638023Abstract: The present invention provides a process for the production of reagent films in which an aqueous synthetic resin dispersion which contains the usual adjuvants and reagents is coated on to a solid substrate or on to a thin fabric in a thin layer and dried, wherein to the crude film mass used for the coating there are added 0.5 to 5% by weight of a scleroprotein hydrolysate with a molecular weight of from 5000 to 50,000 and 0.5 to 10% by weight of a higher alcohol containing 5 to 10 carbon atoms.Type: GrantFiled: February 13, 1985Date of Patent: January 20, 1987Assignee: Boehringer Mannheim GmbHInventors: Heinz-Freidrich Trasch, Anselm Rothe, Bernward Sojka, Wolfgang Werner, Hans Wielinger
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Patent number: 4587284Abstract: An enhanced water-absorbency hydrophilic polymer material, suitable for use in for example wound dressings, is prepared by a process in which a water-containing organic hydrogel comprising a gelable polysaccharide and/or protein or polypeptide interspersed with a polymer of a hydrophilic acrylic or methacrylic acid derivative is permeated with a base, the pH of said hydrogel being raised to at least 9 during treatment with said base.Type: GrantFiled: June 14, 1985Date of Patent: May 6, 1986Assignee: Ed. Geistlich Sohne AG fur Chemische IndustrieInventors: Heinz Luissi, Peter Geistlich
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Patent number: 4585815Abstract: A stencil printing ink is described, comprising 0.5 to 20% by weight pigment, 5 to 30% by weight extender pigment, 0.5 to 5% by weight water-soluble polymer (the viscosity of its 10% aqueous solution is at least 40 cps), 3 to 15% by weight (calculated as solids) o/w type resin emulsion, 5 to 20% by weight polyhydric alcohol and water. This ink can produce printed images without being affected by printing conditions such as temperature and application pressure. Thus, it is suitably used in stencil printing for non-professional or unskilled people.Type: GrantFiled: December 12, 1983Date of Patent: April 29, 1986Assignee: Pilot Ink Co., Ltd.Inventors: Yoshiaki Ono, Takeshi Teranishi
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Patent number: 4563490Abstract: The invention relates to a composite polymeric material suitable for biological and medical applications and to the method for preparation thereof. The composite material consists of 1-99 wt. % of hydrophilic polymer or copolymer based on methacrylic or acrylic esters, 1-99 wt. % of fibrillar collagen, and up to 2.5 wt. % of a crosslinking agent, based on both polymeric components. The composite material may further comprise biologically active compounds and other auxiliary materials, as fillers and/or plasticizers. The composite material is prepared by dispersing the fibrillar collagen in a solution or a highly swollen dispersion of the synthetic hydrophilic polymer or copolymer in a lytropic agent and the subsequent removal of the lyotropic agent, thus forming a matrix of the synthetic polymer or copolymer penetrated by fibrillar collagen or vice versa. The composite material may be applied on a solid support or reinforced with glass, plastics, cellulose, or metallic materials.Type: GrantFiled: November 18, 1983Date of Patent: January 7, 1986Assignee: Czechoslovenska akademie ved of PrahaInventors: Miroslav Stol, Miroslav Tolar, Milan Adam, Pavel Cefelin, Jaroslav Kalal
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Patent number: 4542178Abstract: For the thermoplastic processing of polyvinyl alcohol, the processing temperature must be below the decomposition temperature of the polyvinyl alcohol; this is attained by incorporating plasticizers. For preparing a plasticizer-containing granular polyvinyl alcohol wherein the plasticizer is homogeneously distributed, there is used as starting material a granular polyvinyl alcohol consisting substantially of particles having a definite diameter. The plasticizer is incorporated in the presence of a small amount of water insufficient to dissolve the polyvinyl alcohol, and the temperature is adjusted in a definite manner during the mixing operation. Simultaneous presence of fine particles of a high molecular weight organic compound soluble or dispersible in water is advantageous. The plasticizer-containing granular polyvinyl alcohol is suitable for the manufacture of any shaped articles, especially films and sheets.Type: GrantFiled: December 2, 1983Date of Patent: September 17, 1985Assignee: Hoechst AktiengesellschaftInventors: Wolfgang Zimmermann, Albrecht Harreus
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Patent number: 4427808Abstract: The invention relates to a composite polymeric material suitable for biological and medical applications and to the method for preparation thereof. The composite material consists of 1-99 wt. % of hydrophilic polymer or copolymer based on methacrylic or acrylic esters, 1-99 wt. % of fibrillar collagen, and up to 2.5 wt. % of a crosslinking agent, based on both polymeric components. The composite material may further comprise biologically active compounds and other auxiliary materials, as fillers and/or plasticizers. The composite material is prepared by dispersing the fibrillar collagen in a solution or a highly swollen dispersion of the synthetic hydrophilic polymer or copolymer in a lyotropic agent and the subsequent removal of the lyotropic agent, thus forming a matrix of the synthetic polymer or copolymer penetrated by fibrillar collagen or vice versa. The composite material may be applied on a solid support or reinforced with glass, plastics, cellulose, or metallic materials.Type: GrantFiled: July 15, 1981Date of Patent: January 24, 1984Assignee: Ceskoslovenska akademie vedInventors: Miroslav Stol, Miroslav Tolar, Milan Adam, Pavel Cefelin, Jaroslav Kalal
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Patent number: 4421881Abstract: An improved nitrocellulose lacquer containing small amounts of water-soluble gelatin of molecular weight range of 15,000 to 250,000 and an acrylic copolymer and a novel process for dispersing and incorporating the gelatin are disclosed.Type: GrantFiled: April 19, 1982Date of Patent: December 20, 1983Inventors: Sol Benkendorf, Frank A. Calamito, Carmine M. Zaccaria
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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