Hydroxyethyl Patents (Class 524/44)
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Patent number: 5847031Abstract: A polymer composition, in particular an active substance-containing depot material composition or an absorbent composition are disclosed which substantially consist of a water-soluble and/or water-swellable polymer based on polysaccharides as the main component, and a water-swellable, synthetic polymer as further component, used as polymeric components, and of a matrix material for the prevention of separation and gel blocking, an ionic or covalent cross-linking agent, as well as of an anti-blocking agent. Additionally their production and use as well as (animal) hygiene items and chemico-technical products are disclosed which comprise these polymer compositions, these active-substance-containing depot material compositions, or the absorbent compositions.Type: GrantFiled: January 16, 1996Date of Patent: December 8, 1998Assignee: Chemische Fabrik Stockhausen GmbHInventors: Helmut Klimmek, Uwe Gunther, Helmut Bruggemann
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Patent number: 5834538Abstract: A pressure sensitive adhesive(PSA) composition includes a latex system of an aqueous polymer dispersion derived from ethylenically-unsaturated monomers in the presence of a water soluble protective colloid. The PSA compositions are used in the manufacture of a variety of articles that are intended to be easily attachable to another substrate by the application of pressure alone.Type: GrantFiled: June 18, 1996Date of Patent: November 10, 1998Assignee: Hercules IncorporatedInventors: Jacobus G. deHullu, Dirk Kruythoff, Willemien G. Salomons, Adriana Veldhorst
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Patent number: 5830934Abstract: An emulsion polymer is disclosed by the present invention. In particular, the emulsion polymer comprises a protective colloid and a functionalized silane component which is of the formula: ##STR1## wherein R" is C.sub.1 -C.sub.5 alkyl, R' is C.sub.1 -C.sub.5 alkyl, R is SH, CH.sub.2 .dbd.CH--, CH.sub.2 .dbd.C(CH.sub.3)--C(O)O--, CH.sub.2 .dbd.CH--C(O)O--, and ##STR2## n is 1-10, and m is 2 or 3.Type: GrantFiled: October 27, 1995Date of Patent: November 3, 1998Assignee: Reichhold Chemicals, Inc.Inventor: Venkataram Krishnan
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Patent number: 5785747Abstract: The present invention provides compositions useful for viscosifying aqueous fluids, methods for making them and methods for using them. In one aspect of the invention, inventive compositions comprise a prehydrating alcohol having at least two hydroxyl groups and having a molecular weight of from about 60 to about 600; an inorganic salt; and a polymer. In a preferred aspect of the invention, the viscosifier composition additionally comprises a solvent having a molecular weight of from about 75 to about 1000. According to another aspect of the invention, inventive compositions comprise a prehydrating alcohol; an inorganic salt; and a polymer; and the composition is essentially free from water. Inventive compositions find advantageous use in viscosifying fluids utilized in subterranean drilling activities such as, for example, drilling, drill-in, completion, hydraulic fracturing, work-over, packer, well treating, testing, spacer, or hole abandonment fluids.Type: GrantFiled: January 17, 1997Date of Patent: July 28, 1998Assignee: Great Lakes Chemical CorporationInventors: Daniel P. Vollmer, Paul H. Javora, Robert L. Horton
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Patent number: 5744520Abstract: A process for the preparation of polymer compositions which comprises mixing a conductive component with an anionic polymeric latex containing a polymer; adding a cationic surfactant, or flocculant whereby the aggregation of the latex particles and the conductive component particles results; subsequently adding colloidal stabilizer, followed by the addition of a base to obtain a pH of from about 7 to about 12; heating above about the polymer glass transition temperature thereby enabling the severage, or breakage of the formed aggregated particles; further heating above about the polymer glass transition temperature enabling the coalescence of the polymer and conductive component particles; and optionally washing and drying the resulting coalesced product.Type: GrantFiled: July 19, 1996Date of Patent: April 28, 1998Assignee: Xerox CorporationInventors: Grazyna E. Kmiecik-Lawrynowicz, Richard P. N. Veregin, Raj D. Patel, Michael A. Hopper, Maria V. McDougall
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Patent number: 5741836Abstract: This invention is a screen-printable ink receptive composition. It contains (a) a hydrophilic polymer and (b) a thickener and has (c) a viscosity of 10 to 1,000 poise at shear rates less than 10.degree. s.sup.-1 and exhibits (d) a shear thinning behavior defined by the following relationship:log(viscosity)=A ?log(shear rate)!wherein A represents (e) the slope of the line obtained by plotting log(viscosity) against log(shear rate) and has (f) a value of up to -0.1 when calculated over shear rates ranging from 10.degree. to 10.sup.-2 s.sup.-1.Type: GrantFiled: December 22, 1994Date of Patent: April 21, 1998Assignee: Eastman Kodak CompanyInventors: Mary A. Krenceski, Kevin J. Swallow, Douglas Eugene Bugner, Alfred John Amell
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Patent number: 5736595Abstract: A polymer composition, a process for the production of a polymer composition, in particular of an absorbent, are disclosed which substantially consist of a special component A based on renewable polysaccharide raw materials, a special component B consisting of a water-soluble polymer, a matrix material, an ionic and/or covalent cross-linking agent, or an anti-blocking agent, which is obtainable in that the water-swellable polymer is brought together with the polysaccharide polymer, that these are dried and ground then, the other components are added, and mixing up to homogeneity is effected followed by a heat treatment, and that during the addition of the cross-linking agent, after said heat treatment, the same is optionally fixed by the matrix by means of a final heat treatment.Additionally the use of this polymer composition and (animal) hygiene items and chemico-technical products are disclosed which comprise a previously manufactured polymer composition.Type: GrantFiled: November 3, 1995Date of Patent: April 7, 1998Assignee: Chemische Fabrik Stockhausen GmbHInventors: Uwe Gunther, Helmut Klimmek, Helmut Bruggemann
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Patent number: 5725648Abstract: This invention relates to paper coating compositions comprising pigment, adhesive binder and rheology modifier wherein the rheology modifier comprises at least one of a) a mixture of guar and at least one other water-soluble polymer in sufficient amount to reduce the amount of guar adsorbed onto the pigment, or b) reduced molecular weight guar. The invention also relates to processes for making coated paper using the coating compositions, and to paper coated with the coating compositions.Type: GrantFiled: September 25, 1996Date of Patent: March 10, 1998Assignee: Hercules IncorporatedInventors: Michael J. Brown, Teng-Shau Young
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Patent number: 5721295Abstract: A polymer composition, in particular an absorbent composition or an active substance-containing depot material are disclosed which substantially consist of a water-soluble and/or water-swellable polymer based on polysaccharides as the main component, and of a water-swellable polymer as further component, used as polymeric components, and of a matrix material for the prevention of separation and gel blocking, an ionic or covalent cross-linking agent, a reactive additive, as well as of an anti-blocking agent. Additionally, their production and use as well as (animal) hygiene items and chemico-technical products are disclosed which comprise these polymer compositions or absorbent compositions.Type: GrantFiled: January 26, 1996Date of Patent: February 24, 1998Assignee: Chemische Fabrik Stockhausen GmbHInventors: Helmut Bruggemann, Uwe Gunther, Helmut Klimmek
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Patent number: 5710195Abstract: This invention applies to methods for creating opaque indicia on substrate surfaces and to non-pigmented, moisture-free, jet ink compositions containing only solvents and solvent soluble resins and dyes that exhibit the acceptable characteristics of opacity, contrast, adhesion and machine compatibility. The compositions are on weight percentage basis as stated below. The compositions contain a combination of film forming resins of varying molecular weights of a dry resin solids percentage between 8 and 15%. The resins are chosen from the following: nitrates of cellulose; acrylics; alkyds; vinyl acetate-vinyl chloride copolymers; and styrene acrylic. The quantities of resin are chosen according to the desired viscosity, adhesion strength of film on the subject substrate and the degree of shearing of the drying resin mixture. An optimum balance of adhesion and opacity is stoichiometrically obtained.Type: GrantFiled: August 5, 1994Date of Patent: January 20, 1998Inventors: Ramesh B. Subbaraman, Barry R. Brucker
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Patent number: 5705553Abstract: Copolymers containing carboxyl groups in aqueous dispersion form or redispersible powder form and their water-soluble salts, based on ethylenically unsaturated and copolymerizable monomers, the macro-molecules of which contain at least 24% by weight of monomer units carrying carboxyl groups prepared, by emulsion copolymerization initiated by free radicals in the presence of polyvinyl alcohol (PVA) or polyvinylpyrrolidone (PVP) dissolved in the aqueous phase and isolation of the copolymers in aqueous dispersion form, and optionally subsequent removal of water by spray drying to obtain redispersible copolymer powders and processes for their preparation and their use as thickeners in aqueous formulations which copolymers, by conversion into their water-soluble salt forms, are useful as thickening agents having a surprisingly advantageous rheology-modifying action in aqueous systems.Type: GrantFiled: November 13, 1995Date of Patent: January 6, 1998Assignee: Hoechst AktiengesellschaftInventor: Rolf Kuropka
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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: 5637265Abstract: A transfer-pad printing composition comprising either a latex or solution coating composition comprising a coating vehicle and a monomeric or polymeric hydroxylated and/or carboxylated surface active wetting agent that is coating compatible with the pad surface such that the coating composition, provided in the shape of a pattern, is precisely imprinted on its surface and the pad can precisely transfer the design to another surface that is receptive to the coating. The process of transfer-pad printing with the composition. Also, articles made by such transfer printing.Type: GrantFiled: August 24, 1994Date of Patent: June 10, 1997Inventors: Frank V. Misciagno, Gregory C. Young, George A. Skoler
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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: 5612397Abstract: The composition having wet state clarity includes an aqueous latex binder combination of polymer particles with a diameter of less than 80 nanometers and a thickener. When glitter flakes are dispersed in these novel compositions in their wet state, they glitter more than conventional glitter compositions. Thus, they are more appealing to a consumer or an artist than conventional glitter compositions that tend to be cloudy or dull in their wet state.Type: GrantFiled: December 19, 1994Date of Patent: March 18, 1997Assignee: Rohm and Haas CompanyInventors: Matthew S. Gebhard, William E. deVry, Caren A. Puschak, Anne M. Bacho, Gary R. Larson
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Patent number: 5559178Abstract: A composition for coating wet rubber particles during extrusion and pelletization prior to drying comprising an inorganic partitioning agent, a thickener and binder reagent, water and a water soluble anionic dispersant, and the process for application to elastomers including those of low viscosity or high resin content to improve their processability during manufacture.Type: GrantFiled: January 18, 1994Date of Patent: September 24, 1996Assignee: DSM Copolymer, Inc.Inventor: Lincoln Widmer
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Patent number: 5556460Abstract: A cement admixture composed of a low molecular weight oxyalkylene compound and a comb polymer having carboxylic acid groups and oxyalkylene units therein.Type: GrantFiled: September 18, 1995Date of Patent: September 17, 1996Assignee: W.R. Grace & Co.-Conn.Inventors: Neal S. Berke, Michael P. Dallaire, Ellis M. Gartner, Awdhoot V. Kerkar, Timothy J. Martin
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Patent number: 5550180Abstract: A latex composition comprising, as a rheology modifier, an effective amount of a boehmite alumina having a crystal size (020 plane) of less than about 60 Angstroms and a surface area, when calcined to gamma phase, of greater than approximately 200 m.sup.2 /g, the boehmite alumina being present in an amount effective to obtain the desired rheological properties of the composition.Type: GrantFiled: December 2, 1994Date of Patent: August 27, 1996Assignee: Condea Vista CompanyInventors: Cutis M. Elsik, Ronald L. Beggs
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Patent number: 5539044Abstract: Flow of a stream comprised of hydrocarbons is improved by introducing into the stream a stable, non-agglomerating suspension comprising:(a) water,(b) highly dispersed in the water, and substantially insoluble therein, and extremely finely-divided, non-crystalline, ultra-high molecular weight, hydrocarbon-soluble, undegraded polyalkene having 2 to about 30 carbon atoms per alkene precursor and an inherent viscosity of at least 20 dL/g, and(c) a small but effective amount of a surfactant having a HLB of at least about 9. The finely divided polyalkene is prepared by polymerization and then cryogrinding below the glass transition temperature of the polyalkene.Type: GrantFiled: September 2, 1994Date of Patent: July 23, 1996Assignee: Conoco In.Inventors: Aysen Dindi, Ray L. Johnston, Yung N. Lee, Debora F. Massouda
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Patent number: 5521234Abstract: A Fluidized Polymer Suspension (FPS) thickener comprising a hydroxyethylcellulose and/or alkyl or arylalkyl hydrophobically modified hydroxyethylcellulose added continuously to an aqueous dispersion increases productivity for manufacture of aqueous coating compositions. The FPS can be stored and metered without delays associated with dry powders. A latex paint is continuously produced by simultaneously or sequentially mixing latex binder, dispersed pigment and FPS thickener along with other ingredients.Type: GrantFiled: April 29, 1994Date of Patent: May 28, 1996Assignee: Aqualon CompanyInventors: Richard G. Brown, Charles L. Burdick, Charles W. Vanderslice
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Patent number: 5514733Abstract: An ink composition for thermal transfer using a basic dye, or a cationic dye, is disclosed. The ink composition for thermal transfer contains the basic dye and an organic high polymer, with the basic dye being dissolved or dispersed into the organic high polymer with a solubilizing agent compatible with both the basic dye and the organic high polymer. The solubilizing agent is an amphipathic compound, preferably, having an HLB value of 7 or greater. By forming an ink layer containing the ink composition for thermal transfer on a base, an ink ribbon for thermal transfer is formed. A thermal transfer target sheet having a receptor layer containing an interlayer compound substituted by an ion exchangeable with the basic dye and a binder resin is used. The ion exchangeable with the basic dye is exemplified by an organic ion, such as an organic onium ion.Type: GrantFiled: August 12, 1994Date of Patent: May 7, 1996Assignee: Sony CorporationInventors: Kengo Ito, Toshihisa Inoue, Masanobu Hida, Motohiro Mizumachi
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Patent number: 5512616Abstract: An improved joint compound is provided that has from about 0.2 to about 0.9% of a thickener system selected from unborated hydroxypropylguar or a blend of an unborated hydroxypropylguar and 1-3% of a cellulose ether. This thickener system is either in dry form or as a fluid suspension. This joint compound is useful for the installation of wall board paneling in residential commercial, and industrial buildings.Type: GrantFiled: May 31, 1994Date of Patent: April 30, 1996Assignee: Aqualon CompanyInventor: Thomas J. Podlas
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Patent number: 5504123Abstract: Cellulose ether derivatives comprising a hydrophobic substituent having an unsaturated alkyl portion are disclosed. The unsaturation in the alkyl portion of the hydrophobic substituent can promote crosslinking of the cellulose ether derivative. The cellulose ether derivatives are useful as ingredients in latex compositions. The cellulose ether derivatives can provide associative thickening and rheological properties to latex composition during storage and application. In addition, after the latex composition is applied to the surface to be coated, the cellulose ethers of the present invention can promote crosslinking of the latex film to provide a hard and durable coating. Latex paint compositions comprising the cellulose ether derivatives of the present invention are also disclosed.Type: GrantFiled: December 20, 1994Date of Patent: April 2, 1996Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Emmett M. Partan, III
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Patent number: 5502089Abstract: A crosslinkable polymeric emulsion has a pH from about 1.5 to about 8.5 and includes a carboxyl-substituted latex polymer dispersed in an aqueous medium, an Iron (III) compound and an amount of a stabilizer, selected from the group consisting of nonionic surfactants and protective colloids, effective to sterically stabilize the emulsion. A method for making a crosslinked polymer film includes forming a layer of the crosslinkable polymer emulsion and drying the layer to form the crosslinked polymer film wherein the film is ionically crosslinked between carboxyl substituent groups of the polymer by Iron (III) cations. A crosslinking agent for carboxyl-substituted polymers includes particles of a water-insoluble Iron (III) compound having an average maximum characteristic linear dimension of less than or equal to about 5 microns.Type: GrantFiled: September 7, 1994Date of Patent: March 26, 1996Assignee: Rohm and Haas CompanyInventors: Mark C. Bricker, Paul R. Van Rheenen
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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: 5473005Abstract: A water based thixotropic adhesive gel is disclosed which contains: water; polyvinyl alcohol, or wherein a portion of the polyvinyl alcohol is replaced with polyvinylpyrrolidone; xanthan gum to impart thixotropic properties to the gel; and a plasticizer for the polyvinyl alcohol. The gel has a thixotropic index which permits the viscosity of the adhesive to break down when a flexible tube or squeeze bottle dispenser is finger-pressed while having a sufficiently low viscosity to allow for easy extrusion from an orifice having a diameter of about 0.06 to 0.15 inches. When pressure is released, after the desired amount of adhesive has flown out of the dispenser, the adhesive quickly reverts to very close to its original gel state so that it does not run on a vertical surface of porous or semiporous material such as paper. Preferred gels contain a water soluble dye and are clear.Type: GrantFiled: February 9, 1994Date of Patent: December 5, 1995Assignee: Borden, Inc.Inventors: Peter S. Columbus, John Anderson, Yogeshbhai B. Patel
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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: 5432215Abstract: Building material products, such as, for example, jointing compounds, adhesives, emulsion paints, synthetic plasters, fillers and the like, comprising a mixture ofa) at least 10% by weight, in particular 10 to 99% by weight, of a water-soluble natural polymer and derivatives thereof,b) 1 to 89% by weight of an alkali metal salt or ammonium salt of a crosslinked polyacrylate which, if desired, is grafted with a starch, andc) 0 to 60% by weight of a water-soluble alkali metal salt or alkaline earth metal salt of arylsulfonic acid/formaldehyde condensation products or of a sulfo-modified melamine/formaldehyde polycondensation product.Type: GrantFiled: March 18, 1992Date of Patent: July 11, 1995Assignee: Hoechst AGInventors: Friedrich Girg, Jozef Bohme-Kovac
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Patent number: 5430078Abstract: An electrodeposition coating composition is described comprising:(a) an aqueous dispersion of a water-dispersible, electrically-depositable resin, and(b) a water-soluble cellulose ether.Type: GrantFiled: August 31, 1993Date of Patent: July 4, 1995Assignee: BASF CorporationInventors: Monika Hoppe-Hoeffler, Linda K. Borton, Charles L. Tazzia
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Patent number: 5420180Abstract: A size for yarn which minimizes thread break is described. The size comprises an aqueous solution of (I) a polyvinyl alcohol resin, (II) a modified starch, and a water-soluble cellulose compound (III), wherein the components are related by the following equations:(I)/(II)+(III))=85/15 to 95/5, and(II)/(III)=20/80 to 80/20,while simultaneously satisfying the expressions0.27X-0.7.ltoreq.log.sub.10 Y.ltoreq.0.27X+0.6; and (1)20.ltoreq.Y.ltoreq.300; (2)(A)/(B).ltoreq.0.5 (3)where X is the solid concentration in % by weight, Y is viscosity in centipoise at 90.degree. C. and a shear rate of 10 sec.sup.-1, (A) is viscosity at 60.degree. C. and a shear rate of 10,000 sec.sup.-1 of an adjusted aqueous solution resulting from the adjustment of the viscosity to 100 centipoise at 60.degree. C. and a shear rate of 10 sec.sup.-1 with said compound ratio of each of the components kept constant, and (B) is viscosity of 100 centipoise at 60.degree. C. and a shear rate of 10 sec.sup.-1 of said adjusted aqueous solution.Type: GrantFiled: October 26, 1993Date of Patent: May 30, 1995Assignee: Kuraray Co., Ltd.Inventors: Tetsuya Katayama, Hirotoshi Miyazaki, Hitoshi Maruyama, Koji Onishi
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Patent number: 5416140Abstract: A cross-linkable water-based wood adhesive comprised of a critical mixture of from 0.10 to 0.75 by weight of a water-soluble, high-viscosity thickening agent polymer such as hydroxyethylcellulose, 0.05-0.40% by weight of a defoamer to dissipate foam quickly during manufacture, 25.00 to 45.00% by weight of solids of a self-cross-linking polyvinyl acetate polymer (treated with N-methylolacrylamide) dispersed in water, 1.00-3.00% by weight of a plasticizer/coalescing agent such as 2,2,4-trimethyl-1,3 pentanediol monoisobutyrate, 0.50 to 1.00% of an acidic catalyst, such as aluminum chloride, 4.00 to 12% by weight of fine particle-size wood fibers (soft or hard wood fibers or a mixture of both) and 0.10% by weight of a preservative. The viscosity of this adhesive gel will "break-down" when its container, e.g. a squeeze-bottle or flexible tube is finger-pressed resulting in a sufficiently low viscosity to allow for easy extrusion from the small orifices, approximately 0.Type: GrantFiled: June 10, 1994Date of Patent: May 16, 1995Assignee: Borden, Inc.Inventors: Peter S. Columbus, Yogeshbhai B. Patel, John Anderson
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Patent number: 5376709Abstract: An improved method is provided for reversibly suppressing the viscosity of an aqueous solution containing a hydrophobically modified thickener by first complexing the hydrophobic moieties of the thickener with a methyl-.beta.-cyclodextrin and then decomplexing the methyl-.beta.-cyclodextrin from the thickener once the aqueous solution containing the thickener is added to the aqueous system which is intended to thicken.Type: GrantFiled: March 12, 1993Date of Patent: December 27, 1994Assignee: Rohm and Haas CompanyInventors: Willie Lau, Vishnu M. Shah
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Patent number: 5348993Abstract: Aqueous polymer dispersions contain, as a dispersant, a mixture of an ethylene oxide/propylene oxide copolymer, an ethoxylated alkylphenol and/or an ethoxylated fatty alcohol, an ethoxylated polysaccharide and, if required, as a further component, sulfuric acid half-esterified with an ethoxylated alkylphenol and/or an ethoxylated fatty alcohol.Type: GrantFiled: February 9, 1993Date of Patent: September 20, 1994Assignee: BASF AktiengesellschaftInventors: Bernd Daeumer, Andree Dragon, Wilhelm F. Beckerle, Gernot Franzmann, Josef Neutzner, Eckehardt Wistuba, Joachim Pakusch, Maximilian Angel
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Patent number: 5328942Abstract: Film-forming compositions for coating objects, such as seeds, are characterized by a cellulosic polymer, and a polyalkylene oxide polymer. The compositions may also include a glycol, microbial agents, gelling agents, surfactants, and antifoamants in an aqueous medium.In a process for enveloping solid forms such as seeds with the above composition, the composition may be mixed with seed protectant chemicals, such as fungicides, prior to its application to seeds in seed treating equipment.Type: GrantFiled: July 21, 1992Date of Patent: July 12, 1994Assignee: Uniroyal Chemical Company, Inc.Inventors: Ikbal A. Akhtar, Harold R. Sisken
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Patent number: 5284897Abstract: A water based thixotropic adhesive gel is disclosed which consists essentially of: water; partially hydrolyzed polyvinyl alcohol, or wherein a portion of the polyvinyl alcohol is replaced with polyvinylpyrrolidone; a water-soluble high viscosity thickening agent polymer which is compatible with the polyvinyl alcohol and which imparts thixotropic properties to the gel; a water-soluble plasticizer for the polyvinyl alcohol; and a watersoluble defoamer in proportion of ingredients so that the viscosity of the adhesive will break down when a flexible tube or squeeze bottle dispenser is finger-pressed and have a sufficiently low viscosity to allow for easy extrusion from an orifice having a diameter of about 0.06 to 0.15 inches. When pressure is released, after the desired amount of adhesive has flown out of the dispenser, the adhesive quickly reverts to very close to its original gel state so that it will not run on a vertical surface on porous and semiporous surfaces such as paper.Type: GrantFiled: November 16, 1992Date of Patent: February 8, 1994Assignee: Borden, Inc.Inventors: Peter S. Columbus, John Anderson, Yogeshbhai B. Patel
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Patent number: 5278203Abstract: Water-soluble, polymer viscosifiers of aqueous solutions, also known as gelling agents, can be suspended in a hydrocarbon carrier fluid, such as, diesel to prepare a liquid gel concentrate. When a liquid gel concentrate is added to an aqueous solution the gelling agent disperses into it and viscosifies it. To make an improved performance admixture for preparation of liquid gel concentrates and render the gelling agent suspendable in the hydrocarbon carrier fluid, it is first coated with a mixture of an oil-compatible polymer suspending agent, such as a polymer suspension, comprising a branched chain alkyl acrylate monomer copolymerized with a minor amount of hydrophilic monomer such as acrylic acid with an appropriate amount of internal crosslinking agent to control polymer particle size, and a surfactant such as a nonylphenol reacted with several moles of ethylene oxide, styrenated phenol ethoxylate, or a phosphate ester of styrenated phenol ethoxylate.Type: GrantFiled: November 5, 1992Date of Patent: January 11, 1994Assignee: Halliburton CompanyInventor: Weldon M. Harms
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Patent number: 5272191Abstract: The rate of disintegration in cold water of water soluble packaging films is improved by incorporating into a film forming polymer composition, to form a dry blend or aqueous dispersion, a substantially water insoluble cellulose material prepared from alkali metal salts of carboxy(lower alkyl) cellulose or hydroxy(lower alkyl) cellulose. The increased disintegration is achieved without loss of film stability and, in some cases, the film stability is improved.Type: GrantFiled: August 21, 1991Date of Patent: December 21, 1993Assignee: FMC CorporationInventors: Nagui I. Ibrahim, Richard M. Herbert
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Patent number: 5264471Abstract: The invention relates to a process for the production of absorbers for water, aqueous solutions and body liquids, the absorbers consisting of at least two components A and B, whereby component A is at least a water-swellable synthetic polymer or copolymer, and component B is at least a natural or synthetic compound being present at normal temperature as a pourable powder which is highly or at least partially soluble, in water, or as a liquid. The present invention is characterized by the fact that component B is added in the form of a powder, a liquid or as a solution to component A during the end phase of the production process thereof after a polymer reaction degree of 90%, preferably 95% is attained, that is is mixed with the polymer gel of component A and, in order to obtain a powdery, pourable end product, is dried, if necessary, and ground.Type: GrantFiled: September 17, 1991Date of Patent: November 23, 1993Assignee: Chemische Fabrik Stockhausen GmbHInventor: Miroslav Chmelir
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Patent number: 5217529Abstract: Insulating materials consisting of artificial mineral fibers are impregnated with water insoluble additives, e.g. dust binders and/or water repellant finishing agents in that they are wetted with an emulsion of the water insoluble additive in an aqueous solution of a cellulose ether. Impregnation takes place easily and is effective and resistant.Type: GrantFiled: May 25, 1990Date of Patent: June 8, 1993Assignee: Isover Saint-GobainInventors: Hartmut Tiesler, Joseph Schirmeisen
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Patent number: 5209663Abstract: A craft art form and system including patterns, paint, and applicators enables craft paint to form three-dimensional color dot matrix patterns having high degree of visual resolution and color saturation. Precisely located and closely spaced circles containing a standard set of color symbols are used to form designs in patterns. Each symbol in the standard set of symbols of the present invention represents an artistic expression which is permanently assigned to a particular color. Each color symbol has a darkness value which corresponds to the darkness value of the assigned color. The craft paint has the characteristics of forming a discrete uniform, homogeneous, three-dimensional bead to overlay the color symbol placed on each circle. This special beading paint can form beads placed very closely together (36 to 81 beads per square inch) without running together, yet retain sufficient fluidity to settle into smooth, substantially rounded, uniform beads.Type: GrantFiled: May 22, 1992Date of Patent: May 11, 1993Assignee: The Flagship Group, Inc.Inventors: Reed N. Wilcox, Richard L. George, William K. Thiess, John T. Loftus, Jr., Timothy F. O'Meara
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Patent number: 5190996Abstract: This invention presents water-resistant, formaldehyde-free starch-based corugating adhesives. The adhesives are alkaline-curing and contain 0.1-7% (by wt.) of a crosslinking agent which is a condensate of an epihalohydrin and an amine, a polyamine, or ammonia.Type: GrantFiled: January 19, 1990Date of Patent: March 2, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventors: Michael Foran, Jules Schoenberg, Dilip Ray-Chaudhuri
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Patent number: 5190997Abstract: An adhesive composition is prepared containing an aqueous copolymer emulsion which contains a first polymer network which is intertwined on a molecular scale with a second polymer network.Type: GrantFiled: February 2, 1989Date of Patent: March 2, 1993Assignee: Sequa Chemicals, Inc.Inventors: Martin K. Lindemann, Kim Deacon
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Patent number: 5185390Abstract: A process for incorporating by thermal diffusion a photochromic substance into a synthetic organic host material is described. In the process, a surface of the host material containing a coating of a resin composition of from about 5 to about 50 parts of hydroxy (C.sub.2 -C.sub.3) alkyl cellulose, e.g., hydroxy propyl cellulose, and from about 95 to about 50 parts of poly(vinylpyrrolidone), which resin composition contains a photochromic substance, is heated to diffuse at least a portion of the photochromic substance into the surface of the host material. Subsequently, the coating is removed by washing with warm soapy water. In a particular embodiment, the host material is a polymer prepared from diethylene glycol bis(allyl carbonate).Type: GrantFiled: December 6, 1991Date of Patent: February 9, 1993Assignee: PPG Industries, Inc.Inventors: Scott Fischer, Cletus N. Welch
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Patent number: 5179141Abstract: A latex adhesive made from a polymer such as a ethylene/vinyl acetate or styrene/butadiene copolymer, a low-boiling alcohol, such as isopropanol, a non-crystallizing polyhydric alcohol such as sorbitol, and preferably a cellulose thickener. The latex adhesive dries so quickly that an adhesively edge-padded stack of paper sheets formed using the adhesive can be cut by hand into tablets within about 30 minutes. These tablets do not leave an upstanding ridge of adhesive when a number of the sheets are torn off.Type: GrantFiled: January 2, 1992Date of Patent: January 12, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Clair J. Emery, Kenneth J. Perrington
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Patent number: 5177128Abstract: A paper coating composition is prepared containing a polymer emulsion which comprises a first polymer network which is intertwined on a molecular scale with a second polymer network.Type: GrantFiled: February 6, 1989Date of Patent: January 5, 1993Assignee: Sequa Chemicals, Inc.Inventors: Martin K. Lindemann, Kim Deacon
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Patent number: 5169884Abstract: A coating composition is prepared containing a polymer emulsion which comprises a first polymer network which is intertwined on a molecular scale with a second polymer network.Type: GrantFiled: February 6, 1989Date of Patent: December 8, 1992Assignee: Sequa Chemicals, Inc.Inventors: Martin K. Lindemann, Kim Deacon
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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: 5143949Abstract: A strippable coating composition is shown for use as a temporary protective coating on a variety of substrates. The composition includes a water based polymeric emulsion which is dispersed in an aqueous carrier to form a stable emulsion. Release aids are incorporated in the composition which allow the protective coating to be removed by peeling or washing off with water.Type: GrantFiled: December 2, 1991Date of Patent: September 1, 1992Assignee: Groco Specialty Coatings CompanyInventors: George W. Grogan, Robert H. Boyd
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Patent number: RE34904Abstract: Cellulose ethers are disclosed which have sufficient nonionic substitution to render them water soluble and which are further modified with a C.sub.10 to C.sub.24 long chain alkylaryl group in an amount between 0.2% by weight and the amount which makes them less than 1% by weight soluble in water. Hydroxyethylcellulose is a preferred water soluble cellulose ether for modification according to the invention. These products exhibit substantially improved viscosifying effects compared to their unmodified cellulose ether counterparts, and provide good leveling and sag resistance in latex paints. Preferred alkylaryl groups are nonylphenyl, dodecylphenyl, and dinonylphenyl. Included are cellulose ethers with spacer groups of various lengths between the alkylaryl group and the connecting group to the cellulose molecule.Type: GrantFiled: July 8, 1993Date of Patent: April 11, 1995Assignee: Hercules IncorporatedInventors: Ernst K. Just, Thomas G. Majewicz, Arjun C. Sau