Carboxylic Acid Ester Patents (Class 524/37)
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Patent number: 6191196Abstract: A polymer composition uncludes a first component being a hydroxy-functional polymer, a second component being a natural polymer and a third component being a thermoplastic polyester. The first component, second component and third component are compounded to form a polymer composition.Type: GrantFiled: April 12, 1999Date of Patent: February 20, 2001Assignees: The United States of America as represented by the Secretary of Agriculture, Biotechnology Research and Development CorporationInventors: Julious L. Willett, William M. Doane
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Patent number: 6103253Abstract: A sprayable, film-forming active substance preparation for the application to plants is characterized by the fact that films which can be produced thereof are pressure-sensitive adhesive, water-insoluble, and at least partially biodegradable.Type: GrantFiled: May 23, 1997Date of Patent: August 15, 2000Assignee: LTS Lohmann Therapie-Systeme, GmbHInventors: Hans-Rainer Hoffmann, Michael Roreger, Malgorzata Kloczko
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Patent number: 6063842Abstract: The present invention relates to a thermal transfer ink layer composition, wherein polyvinylacetal resin and cellulose derivatives are used in a mixture for the binder in the thermal transfer ink layer composition of the sublimation thermal transfer ink ribbon, or the another type of a binder is mixed into the mixture of polyvinylacetal resin and cellulose derivatives and so used therein. As a result, the adhesion between the thermal transfer ink layer and substrate film, and the gradation property of printed images are improved as compared to the case in which the respective binders are used individually. More particularly, the present invention relates to the thermal transfer ink layer composition of the sublimation thermal transfer ink ribbon, which can yield high quality images by means of the aforementioned improvements.Type: GrantFiled: May 11, 1998Date of Patent: May 16, 2000Assignee: Hansol Paper Co., Ltd.Inventors: Oh-Seung Kwon, Jeong-Seok Seo, Yong-Cheol Shin, Tae-Woon Cha, Eun-Seong Kim
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Patent number: 6046259Abstract: A stable aqueous dispersion containing cellulose ester, the dispersion being polymeric microparticles comprised of cellulose ester and a polymer formed from at least two different vinyl monomers of which at least one vinyl monomer is polyethylenically unsaturated. The dispersion of microparticles is formed by a high stress technique prior to polymerization of the vinyl monomers in the presence of the cellulose ester. Typically the dispersion also contains surfactant. A method of making the stable, cellulose ester-containing aqueous dispersion by (a) mixing together a cellulose ester, at least two vinyl monomers of which at least one vinyl monomer is polyethylenically unsaturated, surfactant, and water to form an emulsion; (b) particulating the emulsified mixture of (a) into microparticles by a high stress technique; and (c) copolymerizing the vinyl monomers in the cellulose ester-containing particulated emulsion of (b) to form a crosslinked polymer within the microparticles of the dispersion.Type: GrantFiled: June 27, 1996Date of Patent: April 4, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Suryya K. Das, Soner Kilic, Robyn E. McMillan
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Patent number: 6020405Abstract: Phase change (hot melt) ink compositions for use in a phase change (hot melt) ink jet recording device are disclosed to comprise:(a) from about 0.1% to about 30% of one or more colorants; and(b) from about 0.1 to about 99.9% of one or more reversibly-crosslinked-polymers.Recording is conducted by thermally melting the ink at a temperature above ambient temperature (20.degree. C.) to provide prints that possess high quality images, scratch resistance, abrasion resistance, low-temperature storage stability and flexibility, offset and pick resistance, adhesion, and other desired properties. Components other than those listed above may be included in the ink compositions to achieve specific printer, substrate, or end use requirements. Furthermore, the present invention also includes methods for the preparation of the above-described inks.Type: GrantFiled: May 8, 1998Date of Patent: February 1, 2000Assignee: Westvaco CorporationInventors: Michael D. Matzinger, Robert P. Rodebaugh
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Patent number: 6007610Abstract: Phase change (hot melt) ink compositions for use in a phase change (hot melt) ink jet recording device in which recording is conducted by thermally melting the ink at a temperature above ambient temperature (20.degree. C.) to provide prints that possess high quality images, scratch resistance, abrasion resistance, low-temperature storage stability and flexibility, offset and pick resistance, adhesion, and other desired properties are disclosed to comprise:(a) from about 0.1% to about 30% of one or more colorants; and(b) from about 0.1 to about 99.9% of one or more reversibly-crosslinked-polymers. Components other than those listed above may be included in the ink compositions to achieve specific printer, substrate, or end use requirements. Also, the present invention also includes methods for the preparation of reversibly-crosslinked-polymers and for their use in the above-described inks. Furthermore, the disclosed phase change inks inhibit corrosion of metallic internal printer parts.Type: GrantFiled: May 8, 1998Date of Patent: December 28, 1999Assignee: Westvaco CorporationInventors: Michael D. Matzinger, Robert P. Rodebaugh
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Patent number: 6001904Abstract: Phase change (hot melt) ink compositions for use in a phase change (hot melt) ink jet recording device in which recording is conducted by thermally melting the ink at a temperature above ambient temperature (20.degree. C.) to provide prints that possess high quality images, scratch resistance, abrasion resistance, low-temperature storage stability and flexibility, offset and pick resistance, adhesion, and other desired properties are disclosed to comprise:(a) from about 0.1% to about 30% of one or more colorants; and(b) from about 0.1 to about 99.9% of one or more reversibly-crosslinked-polymers.Components other than those listed above may be included in the ink compositions to achieve specific printer, substrate, or end use requirements. Furthermore, the present invention also includes methods for the preparation of reversibly-crosslinked-polymers and for their use in the above-described inks.Type: GrantFiled: May 8, 1998Date of Patent: December 14, 1999Assignee: Westvaco CorporationInventors: Michael D. Matzinger, Robert P. Rodebaugh
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Patent number: 5994530Abstract: The present invention provides certain carboxymethyl cellulose (CMC) esters of higher acids (e.g., CMC acetate propionate, CMC propionate, CMC acetate butyrate, and CMC butyrate)having specific use in aqueous dispersions useful in formulating waterborne coating compositions containing pigments, especially metallic pigments such as aluminum flakes and mica. The esters also have specific use as wetting agents and in high solids coatings.Type: GrantFiled: June 25, 1998Date of Patent: November 30, 1999Assignee: Eastman Chemical CorporationInventors: Jessica Dee Posey-Dowty, Alan Kent Wilson, Larry Gerald Curtis, Paul Michael Swan, Kab Sik Seo
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Patent number: 5989329Abstract: Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of their initial viscosity 24 hours after they are inoculated with polysaccharide hydrolysis enzyme.Type: GrantFiled: November 10, 1998Date of Patent: November 23, 1999Assignee: Hercules IncorporatedInventor: Arjun Chandra Sau
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Patent number: 5973036Abstract: Phase-change (hot melt) ink compositions for use in a phase change (hot melt) ink jet recording device are disclosed to comprise:(a) from about 0.1% to about 30% of one or more colorants; and(b) from about 0.1 to about 99.9% of one or more reversibly-crosslinked-polymers.Recording is conducted by thermally melting the ink at a temperature above ambient temperature (20.degree. C.) to provide prints that possess high quality images, scratch resistance, abrasion resistance, low-temperature storage stability and flexibilty, offset and pick resistance, adhesion, and other desired properties. Components other than those listed above may be included in the ink compositions to achieve specific printer, substrate, or end use requirements. Furthermore, the present invention also includes methods for the preparation of reversibly-crosslinked-polymers and for their use in the above-described inks.Type: GrantFiled: May 8, 1998Date of Patent: October 26, 1999Assignee: Westvaco CorporationInventors: Michael D. Matzinger, Robert P. Rodebaugh
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Patent number: 5879440Abstract: Water-borne paints containing reduced molecular weight polysaccharide derivatives that are resistant to enzyme hydrolysis. The water-borne paints are biostable, retaining at least about 80% of their initial viscosity 24 hours after they are inoculated with polysaccharide hydrolysis enzyme. A process for making the biostable water-borne paints has the steps: a) treating precursor polysaccharide derivative with polysaccharide hydrolysis enzyme in aqueous medium for a time sufficient to obtain reduced molecular weight polysaccharide derivative; and b) mixing the reduced molecular weight polysaccharide derivative with an effective amount of at least one other water-borne paint ingredient to obtain a water-borne paint.Type: GrantFiled: July 28, 1997Date of Patent: March 9, 1999Assignee: Hercules IncorporatedInventor: Arjun Chandra Sau
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Patent number: 5844023Abstract: A biologically degradable polymer mixture is proposed which consists essentially of starch and at least one hydrophobic polymer. The hydrophobic polymer is in this connection at least substantially biologically degradable and thermoplastically processable and the mixture with the starch comprising a polymer phase mediator or a macromolecular dispersing agent so that the starch is present in the mixture as disperse phase with the hydrophobic polymer as continuous phase, and the phase mediator or the dispersing agent is responsible for the molecular coupling of the two phases. As starch there is preferably used thermoplastic starch which has been prepared substantially with the exclusion of water by means of sorbitol or glycerol. The production of the biologically degradable polymer mixture is also carried out substantially with the exclusion of water.Type: GrantFiled: March 17, 1997Date of Patent: December 1, 1998Assignee: Bio-tec Biologische Naturverpackungen GmbHInventor: Ivan Tomka
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Patent number: 5830933Abstract: A denture adhesive composition contains a denture adhesive and a pharmacologically acceptable carrier in which the denture adhesive is a salt of a copolymer of maleic acid or anhydride and a 1 to 5 carbon atom alkyl vinyl ether having a specific viscosity of at least 4.0. The denture adhesive composition is used to adhere a denture to the oral mucosa.Type: GrantFiled: April 22, 1996Date of Patent: November 3, 1998Assignee: Block Drug Company, Inc.Inventors: Joseph Synodis, Alfred J. Smetana, Robert C. Gasman, Eddie Wong, Hal C. Clarke
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Patent number: 5804617Abstract: This invention relates to a molded object prepared from a copolyester having an inherent viscosity of 0.4 to 1.1 dL/g,wherein the acid component comprises repeat units from 90 to 40 mole % terephthalic acid and from 10 to 60 mole % of one or more additional dibasic acids selected from the group consisting of isophthalic acid, cyclohexanedicarboxylic acid, naphthalenedicarboxylic acid, diphenyldicarboxylic acid, and stilbenedicarboxylic acid;wherein the glycol component comprises repeat units from 1,4-cyclohexanedimethanol.Type: GrantFiled: February 20, 1997Date of Patent: September 8, 1998Assignee: Eastman Chemical CompanyInventors: Douglas Claire Hoffman, Thomas Joseph Pecorini, James Palmer Dickerson, Joseph Alexander DeLoach
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Patent number: 5698612Abstract: The present invention provides thermoplastically workable and completely biodegradable moulding compositions, a process for the preparation thereof and the use thereof as biodegradable materials for the production of, for example, injection-moulded parts, films, fibres or coatings.Type: GrantFiled: December 11, 1996Date of Patent: December 16, 1997Assignee: Bayer AkteingesellschaftInventors: Joachim Simon, Hanns Peter Muller, Dirk Jacques Dijkstra, Jurgen Engelhardt, Volkhard Muller, Gunter Weber
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Patent number: 5668273Abstract: This invention provides certain carboxymethyl cellulose (CMC) esters of higher acids (e.g., CMC acetate propionate, CMC propionate, CMC acetate butyrate, and CMC butyrate). These new ether derivatives of cellulose esters exhibit solubility in a wide range of organic solvents, compatibility with a variety of resins, and ease of dispersion in a water-borne formulation and are useful in coating compositions as binder resins and theology modifiers.Type: GrantFiled: January 29, 1996Date of Patent: September 16, 1997Assignee: Eastman Chemical CompanyInventors: John Michael Allen, Alan Kent Wilson, Paul Lee Lucas, Larry Gerald Curtis
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Patent number: 5656682Abstract: According to the present invention there is provided a composition as obtained from a melt comprising a starch ester and a cellulose ester. The starch ester and cellulose ester may be of the kind obtained by reaction of a mixed acid anhydride with the polysaccharides. The invention further provides the composition when shaped into articles, and the melt from which the composition is obtained.Type: GrantFiled: November 19, 1993Date of Patent: August 12, 1997Assignee: National Starch and Chemical Investment Holding CorporationInventors: Stephen Rimsa, Paul Tatarka
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Patent number: 5641562Abstract: Disclosed is a water-shrinkable film prepared from a composition comprising an elastomeric polymer and a water-dispersible polymer. Also disclosed is a disposable absorbent product, intended for the absorption of body fluids, including the film. The film is useful in imparting improved water-shrinkability properties to the disposable absorbent product.Type: GrantFiled: December 30, 1994Date of Patent: June 24, 1997Assignee: Kimberly-Clark Worldwide Inc.Inventors: Jennifer Cappel Larson, Dave Allen Soerens
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Patent number: 5629365Abstract: Aqueous latices adapted to forming visible light transparent, coherent polymeric films, e.g. in laminates, as protective coatings or as adhesives, comprising colloidal particles of a UV-absorbing polymer less than 5 micrometers in diameter. Useful UV-absorbing polymer include homopolymers and copolymers of vinyl-functionalized monomer of benzotriazole or benzophenone and mixtures with plasticizer and/or coalescing agent. Plasticizer and coalescing agents are useful for providing polymer with reduced glass transition temperature to facilitate coalescence of polymer particles into coherent films. Useful additives for the latices of this invention include wetting agents, surfactants, and crosslinking agents, anti-oxidants and radical scavengers. The latices of this invention are particularly useful in providing clear, thin coatings on windows, tags, labels, flooring, tents, awnings, containers and other UV-susceptible substrates.Type: GrantFiled: December 21, 1994Date of Patent: May 13, 1997Assignee: Monsanto CompanyInventor: Homaune A. Razavi
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Patent number: 5616635Abstract: The present invention discloses a multicolor paint formulation which is comprised of:(1) from about 5 to about 30 weight percent of a neutralized latex made by a method which comprises (A) free radical aqueous emulsion polymerizing at a pH of less than about 3.5 a monomer mixture which comprises, based on 100 weight percent monomers: (a) from about 45 to about 85 weight percent vinyl aromatic monomers, (b) from about 15 to about 50 weight percent of at least one alkyl acrylate monomer, and (c) from about 1 to about 6 weight percent of at least one unsaturated carbonyl compound; in the presence of about 0.5 to 4.0 phm at least one phosphate ester surfactant and in the presence of about 0.5 to 4.0 phm of at least one water insoluble nonionic surface active agent to produce a latex, and (B) neutralizing the latex with ammonia to a pH which is within the range of about 7 to about 10.5 to produce the neutralized latex;(2) from about 0.5 to about 10 weight percent of hectorite clay;(3) from about 0.Type: GrantFiled: November 27, 1995Date of Patent: April 1, 1997Assignee: The Goodyear Tire & Rubber CompanyInventor: Kantilal D. Patel
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Patent number: 5599858Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.Type: GrantFiled: April 26, 1995Date of Patent: February 4, 1997Assignee: Eastman Chemical CompanyInventors: Charles M. Buchanan, Robert M. Gardner, Matthew D. Wood, Alan W. White, Steven C. Gedon, Fred D. Barlow, Jr.
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Patent number: 5595598Abstract: Disclosed herein is a met,hod for adjusting the consistency of concrete mix by adding an water-absorbing polymeric material or a thickening agent of carboxymethylcellulose to a fresh concrete mix.Type: GrantFiled: March 22, 1996Date of Patent: January 21, 1997Assignee: Taisei Rotec Co., Ltd.Inventors: Eiichi Yooda, Fumitaka Itoh
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Patent number: 5594044Abstract: Disclosed are a jet ink composition and a method for printing on glass, plastic, and metal surfaces messages having good adhesion and isopropyl alcohol rub resistance, said composition comprising an organic solvent, a flexible thermoplastic urethane resin, a colorant, a cellulose nitrate resin, and an adhesion promoter.Type: GrantFiled: March 3, 1995Date of Patent: January 14, 1997Assignee: Videojet Systems International, Inc.Inventor: Edward Yang
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Patent number: 5580911Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.Type: GrantFiled: April 26, 1995Date of Patent: December 3, 1996Assignee: Eastman Chemical CompanyInventors: Charles M. Buchanan, Robert M. Gardner, Matthew D. Wood, Alan W. White, Steven C. Gedon, Fred D. Barlow, Jr.
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Patent number: 5559171Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.Type: GrantFiled: April 26, 1995Date of Patent: September 24, 1996Assignee: Eastman Chemical CompanyInventors: Charles M. Buchanan, Robert M. Gardner, Matthew D. Wood, Alan W. White, Steven C. Gedon, Fred D. Barlow, Jr.
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Patent number: 5525652Abstract: A novel denture adhesive composition contains an adhesive mixture comprising sodium carboxymethyl cellulose and, either a partially neutralized sodium, magnesium, zinc mixed salt or a partially neutralized magnesium, zinc mixed salt of an alkyl vinyl ether maleic acid copolymer.Type: GrantFiled: August 10, 1994Date of Patent: June 11, 1996Assignee: Block Drug Company, Inc.Inventors: Hal C. Clarke, Hyung-Kook Ahn, Eddie Wong, Robert C. Gasman, Alfred J. Smetana, Joseph Synodis
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Patent number: 5498663Abstract: A powder coating material for providing a crepe-like coating having a uniformly and densely distributed superior aesthetic appearance and having a high corrosion resistance, which is capable of forming a color distinct ridges and valleys of the wrinkle profile of the coating layer, said powder coating material consisting of a co-milled powdery product of which particle sizes are not higher than 105 .mu.m and which is composed of (A) 95-99.5 parts by weight of a first resin component comprising a thermosetting resin solid at ordinary temperature and (B) 5-0.5 parts by weight of a second resin component comprising a thermosetting resin solid at ordinary temperature and containing 3-8% by weight of a cellulose ester, wherein the powder coating material is prepared by co-milling pelletized resin products of the components (A) and (B).Type: GrantFiled: March 9, 1994Date of Patent: March 12, 1996Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Eiji Shimada, Kenzo Maeda, Shingo Okamoto
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Patent number: 5484826Abstract: The invention relates to free-flowing, quick-dissolving lacquer binder granules based on cellulose esters, more particularly cellulose nitrates, and to a process for their production.Type: GrantFiled: November 28, 1994Date of Patent: January 16, 1996Assignee: Wolff Walsrode AktiengesellschaftInventors: Burkhard Kressdorf, Erhard Luhmann, Lutz Hoppe
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Patent number: 5484843Abstract: Self-reversible, stable, water-in-oil dispersions, miscible with water, constituted by an oil phase, an aqueous phase and at least two emulsifying agents of which at least one is of water-in-oil type, and at least one is of oil-in-water type, which contain 20 to 50% by weight of a mixture constituted by a hydrosoluble anionic polymer belonging to the group of carboxymethylcelluloses (C), and by a cross-linked, synthetic anionic polymer, insoluble in water but water-swellable (P), based on acrylic acid (AA), partially salified with an alkali metal (M), optionally copolymerized with 2-acrylamido 2-methyl propanesulphonate of the alkali metal M (AMPSM), cross-linked with a diethylenic carboxylic acid and in which the molar ratio of the salified acid functions to the total number of free or salified acid functions is comprised between about 0.6 and about 0.9, the ratio by weight C/P+C being comprised between 0.01 and 0.4, preparation process and use for obtaining a printing paste.Type: GrantFiled: September 29, 1994Date of Patent: January 16, 1996Assignee: Societe Francaise HoechstInventors: Paul Mallo, Isabelle Fietier, Ulrich Karsunky
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Patent number: 5446079Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.Type: GrantFiled: December 7, 1993Date of Patent: August 29, 1995Assignee: Eastman Chemical CompanyInventors: Charles M. Buchanan, Robert M. Gardner, Alan W. White
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Patent number: 5432213Abstract: The present invention relates to a high strength water-permeable resinous road paving composition characterized by the use of 2-20 weight parts of thermosetting resin as a binder per 100 weight parts of granular aggregate and 1-20 weight parts of cellulose or 1-30 weight parts of lignocellulose as botanical fiber or their derivatives as additives per 100 weight parts of said thermosetting resin.Another feature of the present invention is to mix certain amount of inorganic substances in fine granular or fibrous form together with said granular aggregate, thermosetting resin, cellulose or lignocellulose, or their derivatives, wherein said inorganic substance is 5-200 weight parts per 100 weight parts of said resin. Furthermore, footpath blocks or pavement of footpaths, driveways, plazas, etc. by the use of the composition of the present invention is another feature of the present invention.Type: GrantFiled: September 20, 1993Date of Patent: July 11, 1995Assignee: Samsung General Chemicals Co., Ltd.Inventors: Hyun-Don Kim, Cheon-Seok Lee, Ju-Hyun Son, Seung-Ho Jeon
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Patent number: 5432223Abstract: A novel high-performance binder system is provided for the fabrication of segregation-free iron based powder blends. The blends are prepared by using a binder system comprising thermoplastic resin polyvinylpyrrolidone and a suitable compatible plasticizer such as polyethylene glycol, and optional solid lubricants. The binder system enables the manufacture of segregation-free iron-based powder blends with high flow rate and compressibility, enhanced apparent density, green strength and transverse rupture strength, and low dimensional variations compared to unbonded powder blends and to blends made with PVP or PEG only as the binder.Type: GrantFiled: August 16, 1994Date of Patent: July 11, 1995Assignee: National Research Council of CanadaInventors: Blaise Champagne, Kenneth Cole, Sylvain Pelletier
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Patent number: 5376708Abstract: A biodegradable plastic material based on cellulose esters and possibly biodegradable carboxylic acid esters, glycol esters or glycol ethers as softener, composed of from about 50 to about 90 weight percent cellulose ester, from about 5 to about 40 weight percent softener, from about 5 to about 30 weight percent polyester and from about 0.5 to about 5 weight percent AQ-nylon. The biodegradable plastic material may also contain organic acids and/or acid esters and/or ethers different from the softener, and other additives, such as flame inhibitors, and is distinguished by excellent biodegradability, injection molding and blow molding characteristics. Also disclosed are articles made of the material of the invention and methods of making such articles. It is preferably molded into thin sheets and transparent plastic articles, preferably into enclosures/containers for oil lamps, eternal flame oil candles, composition lights, other cemetery light designs, votive lights and thin sheets.Type: GrantFiled: July 2, 1992Date of Patent: December 27, 1994Assignee: Battelle Institute e.V.Inventors: Bernd Best, Klaus Wollmann, Alexander Ach
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Patent number: 5352730Abstract: The present invention relates to a coating compound for sheets, films, or molded products composed of modified or unmodified polysaccharides.Type: GrantFiled: June 5, 1992Date of Patent: October 4, 1994Assignee: Wolff Walstrode AGInventors: Erhard Luhmann, Burkhard Kressdorf, Lutz Hoppe, Klaus Szablikowski, Gunter Weber, Sebastian Meyer-Stork
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Patent number: 5331027Abstract: The lubricious hydrophilic coatings of the invention are significantly more lubricious when wet than when dry, are adherent to a variety of substrates, and are resistant to removal by wet abrasion. In one embodiment, the coatings include a hydrophilic polyolefin such as polyvinyl-pyrrolidone and a water-insoluble stabilizing polymer such as a cellulose ester. The coatings may also include an adherent polymer and a plasticizing agent. The coating may be applied by preparing a solution of the stabilizing polymer and a solution of the hydrophilic polyolefin, and coating the substrate first in one then the other. Alternatively, both the stabilizing and hydrophilic polymers may be dissolved in a single solvent system and applied to the substrate in a single step. In another embodiment, only a solution of a hydrophilic polyolefin is applied directly to the substrate.Type: GrantFiled: May 25, 1993Date of Patent: July 19, 1994Assignee: Sterilization Technical Services, Inc.Inventor: Richard J. Whitbourne
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Patent number: 5321063Abstract: A powder coating material for providing a crepe-like coating having a uniformly and densely distributed superior anesthetic appearance and having a high corrosion resistance, is capable of forming color distinct ridges and valleys in the wrinkle profile of the coating layer. The powder coating material consists of a co-milled powdery product, of which the particle sizes are not higher than 105 .mu.m, and which is composed of (A) 95-99.5 parts by weight of a first resin component comprising a thermosetting resin which is solid at room temperature and (B) 5-0.5 parts by weight of a second resin component comprising a thermosetting resin which is solid at room temperature and contains 3-8% by weight of a cellulose ester. The powder coating material is prepared by co-milling pelletized resin products of the components (A) and (B).Type: GrantFiled: May 19, 1992Date of Patent: June 14, 1994Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Eiji Shimada, Kenzo Maeda, Shingo Okamoto
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Patent number: 5302637Abstract: There are provided novel miscible blend compositions comprising (a) a cellulose ester and (b) a vinylphenol containing polymer. The blends do not exhibit large scale phase separation and provide properties which are essentially intermediate between those of either cellulose ester or vinylphenol containing polymers. The blends are useful for both molded and film applications as well as for coatings.Type: GrantFiled: July 22, 1992Date of Patent: April 12, 1994Assignee: Eastman Kodak CompanyInventors: Christine J. T. Landry, David M. Teegarden, Kevin J. Edgar, Stephen S. Kelley
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Patent number: 5300540Abstract: A process for preserving cellular structures includes the steps of pre-treating the structures with a polymeric water solution, drying the structures and then post-treating the structures with an organic solvent, non-water-base solution. Once the structure has been treated with the pre-treatment solution, the specimen is allowed to sit for a predetermined period of time in order for the active ingredients of the solution to penetrate the surface area of the specimen. The specimen is then preferably freeze-dried. The specimens are then treated with a non-water-based post-treatment solution of water-resistant, film-forming polymeric resin to form a barrier coat on the finished product.Type: GrantFiled: June 24, 1992Date of Patent: April 5, 1994Inventor: Thomas R. Masters
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Patent number: 5292783Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic aromatic copolyesters and/or polymeric compounds as well as fibers, molded objects, and films prepared therefrom.Type: GrantFiled: November 21, 1991Date of Patent: March 8, 1994Assignee: Eastman Kodak CompanyInventors: Charles M. Buchanan, Robert M. Gardner, Matthew D. Wood, Alan W. White, Steven C. Gedon, Fred D. Barlow, Jr.
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Patent number: 5166233Abstract: A soft film applicable to the oral mucosa and a drug preparation comprising said film are disclosed, the film comprising a homogeneous mixture comprising a vinyl acetate homopolymer, an acrylic acid polymer, and a cellulose derivative capable of being dissolved in or swollen with water and a lower alcohol. The film or preparation is less causative of an adverse feeling on application to the oral mucosa, excellent in shape retention on water absorption, and adhesive to the oral mucosa for an extended period of time.Type: GrantFiled: January 31, 1990Date of Patent: November 24, 1992Assignees: Nitto Denko Corporation, Sunstar K.K.Inventors: Takamasa Kuroya, Yuichi Inoue
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Patent number: 5082914Abstract: The invention describes the preparation and use of cellulose esters grafted with silicon-containing thiol pendent groups which can serve as crosslinking agents during free radical polymerization of ethylenically unsaturated materials. The grafted cellulose esters provide a crosslinked polymeric network with enhanced solvent resistance and hardness properties when used in conjunction with ethylenically unsaturated materials.Type: GrantFiled: December 15, 1989Date of Patent: January 21, 1992Assignee: Eastman Kodak CompanyInventors: Phillip M. Cook, Stephen S. Kelley
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Patent number: 5077338Abstract: A method of preparing a fiber reinforced elastomer by forming fibers therein in-situ and an elastomer made thereby are provided. In the method, a fiber forming material, preferably a high performance polymer, is dissolved in a compatible solvent to form a solvent/polymer mixture, and the mixture is added to the elastomer during compounding or mixing. The polymer is quickly dispersed into the elastomer, and the solvent rapidly evaporates. The shear of the mixer causes elongation of the polymer into fibers. The fibers may also be oriented by the shear of the mixer.Type: GrantFiled: August 23, 1990Date of Patent: December 31, 1991Assignee: The Goodyear Tire & Rubber CompanyInventors: William C. T. Tung, Deborah A. Tung, Mellis M. Kelley, Douglas C. Callander, 1
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Patent number: 5073581Abstract: Spinnable dopes containing fiber-forming polymers being at least about 55% and less than about 80% lyotropic polysaccharide and at least about 20 percent and less than about 45% thermally-consolidatable polymer and a process for making oriented, shaped articles of lyotropic polysaccharide/thermally-consolidatable polymer blends by orienting the dopes and removing the solvent.Type: GrantFiled: March 7, 1991Date of Patent: December 17, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Carmen A. Covelli, E. Renee Perusich
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Patent number: 5070121Abstract: The invention concerns a solvent-free, polymerizing hotmelt substance free of, or low in monomers, for corrosion- and/or abrasion proofing and/or forming a protective film with barrier properties on a real substrates and molded bodies made of metal, plastic, cellulose materials and/or inorganic materials, in particular for wrapping purposes, and consisting of(a) one or more polymerizing polymers containing hydroxyls with an average molecular weight (M.sub.w) between 1,000 and 500,000 and with a glass transition temperature (T.sub.g).gtoreq.20.degree. C., and/or(b) one or more polymerizing, linear, unbranched and/or unbranched polyesters and/or their copolymers with an average molecular weight (M.sub.w) between 900 and 50,000 and with a glass transition temperature (T.sub.g).gtoreq.-50.degree. C.Type: GrantFiled: April 25, 1989Date of Patent: December 3, 1991Assignee: Schmalbach Lubeca AGInventors: Rudolf Hinterwaldner, Georg Bolte
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Patent number: 5049593Abstract: A water migration resisting filler for filling the interstices of a stranded conductor, an electrical power transmission cable including such filler and a method of making such cable. The filler includes a polymeric compound having a 100 gram needle penetration value between 50 anad 100 tenths of a millimeter at 25.degree. C. and particles of a water swellable material having a particle size of not greater than 20 microns are in contact with the polymeric compound either by admixing it with the compound or applying it to the surface thereof. In the method, the polymeric compound is flowed around the wires of the conductor as they are stranded together and the water swellable material is either admixed with the compound or applied thereto as the conductor is formed, a semi-conductive layer is extruded around the so-filled conductor and a layer of insulation is extruded around the semi-conductive layer.Type: GrantFiled: April 5, 1989Date of Patent: September 17, 1991Assignee: Pirelli Cable CorporationInventors: Fabrizio Marciano-Agostinelli, Marco Barbaro-Forleo
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Patent number: 5011874Abstract: Improved cellulose ester-polymer combinations contain a cellulose ester A and at least one polymerized monomer B of the following formula ##STR1## wherein the substituents have the meaning given in the description and wherein the particles of the combinations are essentially 0.1 to 10 mm in size.Type: GrantFiled: October 10, 1989Date of Patent: April 30, 1991Assignee: Wolff Walsrode AktiengesellschaftInventors: Lutz Hoppe, Wolfgang Koch, Erhard Luhmann, Michael Piepho
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Patent number: 4970247Abstract: Improved cellulose ester dispersions in the aqueous phase contain dispersed particles which contain cellulose esters, a polymerized monomer A having a polymerizable double bond and a polymerized monomer B having at least two polymerizable double bonds.Type: GrantFiled: March 13, 1989Date of Patent: November 13, 1990Assignee: Wolff Walsrode AktiengesellschaftInventors: Lutz Hoppe, Wolfgang Koch, Erhard Luhmann, Michael Piepho
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Patent number: 4935458Abstract: A release agent comprising a polyfunctional alkoxysiloxane and an organic compound which is solid at room temperature and contains a functional group capable of reacting with said polyfunctional alkoxysiloxane, and a composite material comprising a substrate and a cured film of the release agent are disclosed. The cured film of the release agent exhibits high strength and excellent release properties without causing blocking or contamination on an adherent.Type: GrantFiled: January 18, 1989Date of Patent: June 19, 1990Assignee: Nitto Denko CorporationInventors: Kihachi Suzuki, Makoto Sunakawa, Hiroshi Yamamoto
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Patent number: 4891248Abstract: Disclosed is a process for promoting the rapid curing of a two component polyurethane lacquer that has been applied to a substrate. A cure coat composition consisting of a hydroxy functional polymer such as nitrocellulose, a solvent for the polymer, and a urethane catalyst such as an organic tin compound, is applied over the polyurethane lacquer while it is in a wet or semi-dry state.Type: GrantFiled: February 13, 1989Date of Patent: January 2, 1990Assignee: Hercules IncorporatedInventor: Wayne A. Kraus
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Patent number: RE36657Abstract: A denture adhesive composition contains a denture adhesive and a pharmacologically acceptable carrier in which the denture adhesive is a salt of a copolymer of maleic acid or anhydride and a 1 to 5 carbon atom alkyl vinyl ether having a specific viscosity of at least 4.0. The denture adhesive composition is used to adhere a denture to the oral mucosa.Type: GrantFiled: November 18, 1998Date of Patent: April 11, 2000Assignee: Block Drug Company, Inc.Inventors: Joseph Synodis, Alfred J. Smetana, Robert C. Gasman, Eddie Wong, Hal C. Clarke