Vinylidene Chloride Patents (Class 524/568)
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Publication number: 20040039110Abstract: This invention provides processes for isolating particles from an emulsion including the steps of: (a) forming an emulsion having a solid component having a population of particles, a liquid component, and a first ionic forming compound, wherein the presence of the first ionic forming compound in the emulsion does not result in the coagulation of the population of particles contained therein; (b) obtaining a composition having a second ionic forming compound which, by itself, is not sufficient to result in the coagulation of the population of particles contained in the emulsion; and (c) mixing the emulsion and the composition having the second ionic compound such that the first ionic forming compound reacts with the second ionic forming compound to form a coagulating agent which results in the coagulation of the population of particles. The invention also provides processes for preparing a polymer matrix system using the aforementioned process for isolating particles from an emulsion.Type: ApplicationFiled: August 8, 2003Publication date: February 26, 2004Inventors: Robert William Coyle, Morris Christopher Wills
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Patent number: 6531223Abstract: A water based coating composition which does not require a primer for application over wood, masonry, metal, vinyl siding and previously painted surfaces and can be applied over these surfaces in a single coat to provide the tannin blocking, hiding, corrosion resistance and durability of a conventional primer plus two coats of latex paint.Type: GrantFiled: April 16, 2001Date of Patent: March 11, 2003Assignee: The Sherwin-Williams CompanyInventors: Darlene D. Rota, Lorette Madigan, Elizabeth C. Bell, Robert A. Martuch
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Patent number: 6482887Abstract: The invention concerns a compound containing calcium or magnesium acetylacetonate, at least partially coated with a compatible agent selected among alcohol's, carboxylic or sulphonic acids, or their derivatives, phosphates or titanates, &bgr;-ketone compounds; said agents having at least a long chain radical; waxes; polyols; epoxidized vegetable oils; polysiloxane oils or resins or silanes. The invention also concerns the preparation of such a compound and the use of said compound as additive in formulations based on halogenated polymers.Type: GrantFiled: February 7, 2000Date of Patent: November 19, 2002Assignee: Rhodia ChimieInventors: Michel Gay, Francoise Henrio
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Patent number: 6468382Abstract: Packing material with good gas barrier properties comprising a first and a second layer of a fibrous material or, e.g. paper or cardboard, and a layer of a water based polymer, e.g. polyvinyl alcohol, placed between and in direct contact with the layers of fibrous material and functioning both as a gas barrier and as a binding agent in the packaging material. The packaging material is produced through bringing together and binding together with each other a first and a second strip or sheet of a fibrous material by means of a layer of a water based polymer, e.g polyvinyl alcohol, applied between and in direct contact with the strips or sheets. The surplus water in the thus applied polymer layer is absorbed by the fibrous material in one and/or the other strip or sheet to form the intermediate layer functioning as gas barrier and binding agent.Type: GrantFiled: April 3, 1997Date of Patent: October 22, 2002Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Thorbjörn Andersson, Ann-Magret Asp
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Patent number: 6451904Abstract: Novel polymer stabilizers are disclosed. The novel stabilizers have the general formula (R)qSn-(MR″-OCH2-R′CH]m-OT)4-q, P-[(OCH2-R′CH)mOT]3′ wherein M is O or S and R″is (CH2)pCO-, CO-(CH3)p, or CO(CH2)p-. About 0.005 to about 65 phr of the stabilizer can be used in a polymer having a halogen-containing repeating unit, such as poly(vinyl chloride), to reduce yellowing of an article made from the polymer after the article has been exposed to gamma radiation.Type: GrantFiled: October 9, 2001Date of Patent: September 17, 2002Assignee: Occidental Chemical CorporationInventors: Qi Wang, Sandor Nagy
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Publication number: 20020055584Abstract: A method of preparing a sterile article is disclosed. A polymer having a halogen-containing repeating unit is prepared that contains about 0.Type: ApplicationFiled: October 9, 2001Publication date: May 9, 2002Applicant: Occidental Chemical CorporationInventors: Qi Wang, Sandor Nagy
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Patent number: 6353051Abstract: The present invention comprises a composition for coating synthetic grain leather having both dynamic water repellency and oil repellency comprising a copolymer or blend of copolymers and a polyurethane resin in solvent.Type: GrantFiled: January 31, 2000Date of Patent: March 5, 2002Assignee: E. I. du Pont de Nemours and CompanyInventor: Hsu-Nan Huang
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Patent number: 6348517Abstract: A method of preparing a sterile article is disclosed. A polymer having a halogen-containing repeating unit is prepared that contains about 0.Type: GrantFiled: September 1, 2000Date of Patent: February 19, 2002Assignee: Oxy Services, Inc.Inventors: Qi Wang, Sandor Nagy
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Patent number: 6297303Abstract: The invention pertains to a polydiorganosiloxane dispersibility improver for fluororesin powders that contains in the pendant position (A) an organic group selected from the set consisting of polyoxyalkylene-functional organic groups, alkyl groups having at least 12 carbon atoms, and polydialkylsiloxane chain-containing organic groups, and contains in the pendant position or the molecular chain terminal position, (B) a perfluoroalkyl-functional organic group with the general formula F(CF2)a—R1— in which R1 is alkylene or alkyleneoxyalkylene and a is an integer with a value of at least 3. The polydiorganosiloxane dispersibility improver for fluororesin powders has the ability to induce the uniform dispersion of fluororesin powders in organic resins. As a consequence the organic resin compositions have the ability to form uniform and transparent coatings that have an excellent surface lubricity.Type: GrantFiled: June 30, 1999Date of Patent: October 2, 2001Assignee: Dow Corning Toray Silicone Company, Ltd.Inventors: Hideki Kobayashi, Toru Masatomi
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Patent number: 6277915Abstract: Block chlorinated polyolefins are disclosed as performance enhancer of high rubber graft copolymers or chlorinated polyethylenes impact modifier in PVC and/or CPVC resins. The block chlorinated polyolefins (e.g. block chlorinated polyethylene) provide good dispersion of the impact modifier particles in the matrix and better adhesion between the impact modifier and the PVC and/or CPVC interface, providing better physical properties such as impact strength as measured by Notched Izod than did the randomly chlorinated polyolefins, often used as processing aids and as impact modifiers in PVC or CPVC. The differences in properties achieved with block chlorinated polyolefins versus randomly chlorinated polyolefins are attributed to the individual blocks of the blocky polyolefin being compatible with either the impact modifier or the PVC/CPVC resulting in better adhesion between phases.Type: GrantFiled: September 29, 1999Date of Patent: August 21, 2001Assignee: PMD Holdings CorporationInventors: Carole Angèle Lepilleur, Robert Edwin Detterman
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Patent number: 6218012Abstract: A water based coating composition which does not require a primer for application over wood, masonry, metal, vinyl siding and previously painted surfaces and can be applied over these surfaces in a single coat to provide the tannin blocking, hiding, corrosion resistance and durability of a conventional primer plus two coats of latex paint.Type: GrantFiled: March 5, 1999Date of Patent: April 17, 2001Assignee: The Sherwin-Williams CompanyInventors: Darlene D. Rota, Lorette Madigan, Elizabeth C. Bell, Robert A. Martuch
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Patent number: 6172158Abstract: The vinylidene chloride-based latex of the invention has a chlorine ion content reduced to or below 500 ppm based on the total concentration of all solid matter in the latex by weight, preferably by dialysis, and has excellent resistance to hot water treatment.Type: GrantFiled: October 20, 1999Date of Patent: January 9, 2001Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hideki Sakai, Yukio Yamawaki, Masahisa Yokota
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Patent number: 6143814Abstract: The invention relates to a fusible stabiliser combination for thermoplastic polymers with the features of the main claim. The invention also relates to a process for the preparation of said combination, and thermoplastic polymers produced by the use thereof.Type: GrantFiled: May 7, 1999Date of Patent: November 7, 2000Assignee: Chemson Polymer-Additive Gesellschaft mbHInventors: Michael Schiller, Hartmut Hensel, Charles Videler, Emil Lattacher, Paul Ebner, Klaus Dolleschal, Karoline Pacher, Claudia Umfahrer
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Patent number: 6103798Abstract: Thermoplastic compositions are provided containing a saturated hydrocarbon amine oxide and stabilizer compositions are provided containing a saturated hydrocarbon amine oxide and a second stabilizer. The thermoplastic compositions exhibit good melt flow rate stability during processing and are useful for making molded and extruded articles. The stabilizer compositions are useful for addition to thermoplastics for the stabilization thereof. A method is also provided for stabilizing thermoplastic compositions and involves admixing a hydrocarbon amine oxide with a thermoplastic resin. The saturated hydrocarbon amine oxides are preferably trialkyl amine oxides. The thermoplastic resin is preferably a polyolefin resin.Type: GrantFiled: May 26, 1998Date of Patent: August 15, 2000Assignee: General Electric CompanyInventors: Vaikunth S. Prabhu, Roger W. Avakian
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Patent number: 6013723Abstract: Injection molding is performed by using a thermoplastic resin composition including a thermoplastic resin of 30 wt. % or more, a lubricant and an antioxidant. The thermoplastic resin is polymerized with a single-sight catalyst and has molecular-weight distribution of 1.1-5.0. The thermoplastic resin polymerized by using the single-sight catalyst is used for an injection molded article so that the injection molded article is superior in physical strength and blocking proofness. By adding the lubricant and the antioxidant to the thermoplastic resin composition, lubricity and antioxidant thereof may be improved.Type: GrantFiled: December 2, 1997Date of Patent: January 11, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Mutsuo Akao
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Patent number: 6005025Abstract: A method for dispersing solid forms of additives in polymers involves adding dispersions or solutions of additive(s) to a solution of polymer in a tubular mixer (preferably in the presence of a stationary mixer). The mixer leads to a steam precipitation step wherein all fluid ingredients in the mixture are volatilized leaving the solid additive and resin in the desired ratio. This results in a uniform dispersion of the additives in the polymer matrix. As a result of the high dispersion, physical properties of a thermoplastic resin, to which the polymer matrix has been added are preserved. In one illustration, PTFE as a drip inhibitor additive, is added to polycarbonate to obtain a highly dispersed PTFE concentrate of improved drip-inhibition without loss of mechanical properties when added to a thermoplastic molding resin.Type: GrantFiled: January 5, 1998Date of Patent: December 21, 1999Assignee: General Electric CompanyInventors: Qamar S. Bhatia, Paul Buckley, Gary Davis, Robert L. Howe, Wie-Hin Pan, Elliott Shanklin
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Patent number: 5932644Abstract: A chlorine-containing resin composition and molded products thereof comprising a chlorine-containing resin and at least one of lithium compounds selected from the group consisting of lithium hydroxide, lithium hydroxide monohydrate and lithium carbonate, wherein the at least one of lithium compounds is uniformly dispersed within the chlorine-containing resin.Type: GrantFiled: October 8, 1997Date of Patent: August 3, 1999Assignee: Showa Kako Kabushiki KaishaInventor: Kiyotoshi Fujii
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Patent number: 5922798Abstract: A microencapsulatable solvent adhesive composition for coupling plastic conduits, such as pipes, connectors and related fittings comprises a water-insoluble polymer and a mixture of volatile organic solvents for the polymer, each of the solvents having 6 to 40 carbon atoms. This solvent adhesive composition is suitable for microencapsulation by aqueous-based microencapsulation processes. A plurality of microcapsules encapsulating the solvent adhesive composition are bound to a polymeric surface of a conduit, such as a pipe connector or fitting, by a binder composition, to form a surface coated with a layer of rupturable microcapsules. When the microcapsules are ruptured upon joining of the coated conduit to a second conduit, the volume of the released solvent adhesive composition is sufficient to cement the surfaces together.Type: GrantFiled: January 20, 1998Date of Patent: July 13, 1999Assignee: The Lamson & Sessions Co.Inventors: Mark A. Roesch, David A. Maccarone, Gary F. Hillenbrand, Morris F. Newsom
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Patent number: 5869560Abstract: Materials not releasing gaseous organic materials during use are used as a dry-type sealing material such as a gasket disposed upon mounting an air filter to an opening of a ceiling or the like, a wet-type sealing material filled and used in a gap for connecting wall materials or partitionings, a vinyl chloride sheet or a vinyl chloride cloth as a facing material for walls and floors. Specifically, a carboxylic acid ester having a molecular weight of not less than 400 is used as a plasticizer, a phenolic compound having a molecular weight of not less 300 is used as an antioxidant, an aliphatic hydrocarbon having not less than 19 carbon atoms (for example, microcrystalline wax) is used as a lubricant, and an alkylamine ethylene oxide adduct having a molecular weight of not less than 350 is used as an antistatic agent.Type: GrantFiled: July 24, 1996Date of Patent: February 9, 1999Assignee: Taisei CorporationInventors: Sadao Kobayashi, Masayuki Imafuku, Yoshihide Wakayama
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Patent number: 5773493Abstract: A method for dispersing solid forms of additives in polymers involves adding dispersions or solutions of additive(s) to a solution of polymer in a tubular mixer (preferably in the presence of a stationary mixer). The mixer leads to a steam precipitation step wherein all fluid ingredients in the mixture are volatilized leaving the solid additive and resin in the desired ratio. This results in a uniform dispersion of the additives in the polymer matrix. As a result of the high dispersion, physical properties of a thermoplastic resin, to which the polymer matrix has been added are preserved. In one illustration, PTFE as a drip inhibitor additive, is added to polycarbonate to obtain a highly dispersed PTFE concentrate of improved drip-inhibition without loss of mechanical properties when added to a thermoplastic molding resin.Type: GrantFiled: March 1, 1996Date of Patent: June 30, 1998Assignee: General Electric CompanyInventors: Qamar S. Bhatia, Paul Buckley, Gary Davis, Robert L. Howe, Wie-Hin Pan, Elliott Shanklin
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Patent number: 5739188Abstract: A thermoplastic composition comprising: (i) a thermoplastic resin; (ii) an antiplasticizing amount of a solid plasticizer; (iii) optionally an acid scavenger; and (iv) optionally a heat stabilizer selected from the group consisting of mixed metal stabilizers, organotin stabilizers, lead stabilizers, metal free stabilizers, or any combination of the foregoing which improves the processability of the thermoplastic resin without affecting the physical properties of the thermoplastic resin.Type: GrantFiled: September 6, 1995Date of Patent: April 14, 1998Inventor: Nirav Desai
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Patent number: 5723275Abstract: The present invention describes an imaging element having a support, an image forming layer and at least one layer formed from an aqueous coating composition containing a film forming binder. The film forming binder is an interpolymer containing carboxylic acid groups. The interpolymer contains from 60 to 90 weight percent vinylidene chloride. The interpolymer has an acid number of from 30 to 150 and the carboxylic acid groups are reacted with ammonia or amine so that the aqueous coating composition has a pH of from 7 to 10.Type: GrantFiled: September 11, 1996Date of Patent: March 3, 1998Assignee: Eastman Kodak CompanyInventors: Yongcai Wang, Charles Chester Anderson
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Patent number: 5661203Abstract: Organosiloxane compositions exhibiting excellent vibration damping properties comprise(A) from 70 to 99.9 weight percent of a liquid polyorganosiloxane,(B) from 0.1 to 10 weight percent of hollow particles of a thermoplastic organic resin, and(C) from 0 to 20 weight percent of a thickener.Type: GrantFiled: April 17, 1996Date of Patent: August 26, 1997Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Shoji Akamatsu, Yasue Kanzaki
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Patent number: 5595646Abstract: A planar, solid-state electrochemical oxygen sensor having a substrate, conductive strips deposited on the substrate, and a dielectric layer insulating portions of the conductive strips except those portions which define a working electrode and at least one second electrode. The working electrode may be defined by an open printed region of the dielectric, or by a needle-punched or laser-burned hole or opening in the dielectric which exposes a small region of one of the conductive strips. A solid electrolyte contacting the electrodes is covered by a semipermeable membrane which may comprise an acrylonitrile butadiene copolymer or an acrylate-based copolymer. A sample chamber is defined by the membrane, a cover member, and a gasket therebetween, and has a volume of from about 1 to about 2 .mu.m. The gasket is formulated from the highly cross-linked polymerization product of epichlorohydrin. All sensor components are selected such that a sensor operable for at least 2 days under normal conditions is produced.Type: GrantFiled: August 24, 1995Date of Patent: January 21, 1997Assignee: Ciba Corning Diagnostics Corp.Inventors: Joseph S. Foos, Peter G. Edelman, James E. Flaherty, Joseph Berger
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Patent number: 5589532Abstract: Disclosed is a water-based adhesive with enhanced effectiveness for bonding metal and rubber substrates for uses such as vibration damping devices. The adhesive is formulated from a latex which includes at least one conjugated diene and a macromonomer containing at least two ethylene oxide repeat units.Type: GrantFiled: May 15, 1995Date of Patent: December 31, 1996Assignee: GenCorp Inc.Inventors: I. Glen Hargis, John P. Kovalchin, Satish C. Sharma, Raymond J. Weinert, John A. Wilson
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Patent number: 5561191Abstract: Method for the production of a thermostable crosslinked PVC copolymer where the crosslinking is carried out in the presence of humidity and after processing of the polymer. The copolymer is a copolymer of vinyl chloride and 0.05-10 weight % of a vinyl containing alkoxysilane compound. Preferably methacryloxy-propyltrimethoxy-silane or methacryloxy-propyltriethoxysilane is used as comonomer. The crosslinking can be carried out independent of the type of stabilizer. A condensation catalyst and also an inhibitor can be used to prevent too early crosslinking.Type: GrantFiled: March 6, 1995Date of Patent: October 1, 1996Assignee: Norsk Hydro A.SInventors: Morten Lundquist, Jan O. Laundal
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Patent number: 5525654Abstract: Described are moisture-curing sealing and/or adhesive compositions based on alkoxysilane-terminated polyurethanes and containing diurethanes as plasticizers. The diurethanes are prepared either from diol mixtures and mono-functional isocyanates, reacting with substantially all the free hydroxyl groups, or from diisocyanates and mono-functional alcohols, reacting with substantially all the free isocyanate groups. Also described is a method of preparing the moisture-curing sealing and/or adhesive compositions and their use as joint sealants.Type: GrantFiled: September 16, 1994Date of Patent: June 11, 1996Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Tore Podola, Martin Majolo, Winfried Emmerling, Lothar Unger
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Patent number: 5489643Abstract: Described is a coating composition for the formation of a back coat layer in a magnetic recording medium, which comprises carbon black, a binder and a solvent. The binder is composed of an acrylic-polymer-modified polyurethane resin and a vinyl chloride copolymer having at least one type of terminal groups selected from hydroxyl groups, carboxyl groups or tertiary amino groups.Type: GrantFiled: March 17, 1994Date of Patent: February 6, 1996Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Ukima Coulor & Chemicals Mfg. Co., Ltd.Inventors: Eiichi Sugawara, Setsuo Hirose, Yoshinori Konno, Masatoshi Nakajima, Toshiaki Higuchi
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Patent number: 5484840Abstract: A textile sizing composition comprising one or more aqueous-based dispersions containing between about 15 and about 50 percent by weight solids wherein said solids comprise one or more polymers derived from one or more ethylenically unsaturated monomers, said solids having an average particle size of less than 100 nanometers is disclosed.Type: GrantFiled: December 21, 1993Date of Patent: January 16, 1996Inventor: Jesse A. Binkley
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Patent number: 5473007Abstract: The composition of the present invention is a kind of crosslinked, flame-retardant resin composition, which comprises a base polymer of EVA-VC, chlorinated polyethylene, thermal stabilizers, antioxidants, flame-retardant fillers, lubricants and monomers with multifunctional group.The composition essentially comprises 100 weight parts of EVA-VC, 10 to 70 weight parts of chlorinated polyethylene, 40 to 120 weight parts of flame-retardant fillers, and 5 to 20 weight parts of monomer with multifunctional group.In addition, the composition is crosslinked by electron beam to be used as the material for sheath layer of electric wire or cable durable to high voltages.Type: GrantFiled: June 17, 1994Date of Patent: December 5, 1995Assignee: Goldstar Cable Co., Ltd.Inventors: In K. Kwon, Sang M. Kim
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Patent number: 5427863Abstract: The corrosion resistance, and also often the heat resistance, of a autodeposited coating in which the organic binders are predominantly copolymers of vinylidene chloride containing at least 50% vinylidene chloride can be improved by including another type of organic resin binder in the autodeposition bath in sufficient amount to constitute at least 2 up to as much as about 40% of the total of the PVDC and the other organic resin binder. Results can be further improved by rinsing the uncured autodeposited coating with an aqueous treatment solution that has a pH between 7 and 11 and contains between 0.01 and 5% of anions derived from multifunctional organic acids, preferably anions of 1-hydroxyethylidene-1,1-diphosphonic acid, citric acid, tartaric acid, and/or oxalic acid before drying the coating.Type: GrantFiled: September 23, 1992Date of Patent: June 27, 1995Assignee: Henkel CorporationInventor: Elizabeth J. Siebert
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Patent number: 5422384Abstract: The present invention relates to new glass/polymer composites and methods for making them. More specifically, the invention is glass/polymer composites having phases that are at the molecular level and thereby practicably indistinguishable. The invention further discloses making molecular phase glass/polymer composites by mixing a glass and a polymer in a compatible solvent.Type: GrantFiled: November 25, 1992Date of Patent: June 6, 1995Assignee: Battelle Memorial InstituteInventors: W. D. Samuels, Gregory J. Exarhos
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Patent number: 5331022Abstract: For the reduction of the radon load in enclosed spaces, an aqueous, solvent and softener-free dispersion of a vinylidene chloride-acrylate-copolymer is applied to the boundary surfaces of the room and left to dry. The dispersion contains also a nonionic surfactant on a base of alkylphenolethoxylate with a proportion of 10 mole ethylene oxide, a vinyl pyrrolidone-copolymer and a defrothing agent.Type: GrantFiled: October 1, 1992Date of Patent: July 19, 1994Assignee: Hesco AG, Industrieconsulting & IndustrievertretungenInventors: Ludwig Jochmann, Josef Hess
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Patent number: 5283277Abstract: A paint composition containing an inorganic pigment dispersed in an extended polymer composition is provided. The extended polymer composition which exhibits little or no loss of desirable physical properties contains a polymer having certain functional groups attached to the backbone and a chalcogenide of a certain formula, such as urea.Type: GrantFiled: October 7, 1991Date of Patent: February 1, 1994Assignee: Rohm and Haas CompanyInventor: Charles L. Kissel
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Patent number: 5278223Abstract: The invention relates to optionally solventless two-component polyurethane surfacers containing finely divided fillers in a high pigment volume concentration based on a polyfunctional isocyanate component (B) and a polyol component (A) which is liquid at room temperature and which consists of mixture components containing isocyanate-reactive hydroxyl groups with an at least predominant content of branched-chain polyols (A1) containing ester and ether groups, which contains at least a proportion of the finely divided fillers and, optionally, the additives and which, for application, is mixed with the isocyanate component (B) and applied as a mixture which can still be processed by shaping.Type: GrantFiled: March 27, 1992Date of Patent: January 11, 1994Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Bernhard Gruenewaelder, Bernhard Parent, Hermann Kluth, Juergen Wegner, Werner Haller
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Patent number: 5242964Abstract: A process for the preparation of aqueous dispersions of magnetizable polymer particles with a narrow distribution from aqueous dispersions with a wide distribution. The amount of water in the aqueous dispersion with a wide distribution is adjusted so that the proportion by weight of magnetizable polymer particles is between about 1 and 40% of said dispersion. The surfactant concentration of the dispersion after the water adjustment is increased until two phases are obtained: a so-called liquid phase and a so-called solid phase. After separation of these two phases is accomplished, these steps are repeated as desired. An aqueous dispersion with a narrow size distribution is recovered.Type: GrantFiled: July 29, 1991Date of Patent: September 7, 1993Assignee: Rhone-Poulenc ChimieInventors: Jerome Bibette, Dominique Charmot, Gilbert Schorsch
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Patent number: 5236649Abstract: The present invention is a coated particulate in the form of a powder or in the form of a pellet, the particulate comprising a vinylidene chloride interpolymer and being coated with at least one processing aid at a level effective to improve the extrudability of the vinylidene chloride interpolymer. The processing aid beneficially is selected from the group consisting of fatty esters; wax esters; glycerol esters; glycol esters; fatty alcohol esters, fatty alcohols; fatty amides; metallic salts of fatty acids; olefin polymers and polyolefin waxes.Type: GrantFiled: September 16, 1991Date of Patent: August 17, 1993Assignee: The Dow ChemicalInventors: Mark J. Hall, Stephen R. Betso, Duane F. Foye, Kun S. Hyun, Steven R. Jenkins, Donald E. Kirkpatrick, Paul T. Louks, James A. Stevenson
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Patent number: 5214091Abstract: Disclosed in this invention is a thermoplastic resin composition comprising a thermoplastic resin, a conductive inorganic filler and/or a non-conductive inorganic filler, and an adduct of an ethylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a saturated carboxylic acid. The adduct of an alkylene oxide with a saponified product of a copolymer of ethylene and a vinyl ester of a carboxylic acid is an additive having excellent compatibility with the thermoplastic resin and useful for improving dispersibility of the inorganic filler.Type: GrantFiled: March 4, 1992Date of Patent: May 25, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Hisao Tanaka, Sumio Hara
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Patent number: 5158606Abstract: A printing ink composition having a high degree of rub-off resistance comprising (a) a dispersion of a pigment in a vehicle containing a C.sub.7 -C.sub.40 oil and (b) a polymer latex emulsified in said dispersion. When employed for printing at high speeds, an anti-misting compound such as tridecyl acid phosphate, phosphoric acid, glycerol, or propylene carbonate is preferentially added to the ink composition. Where cost is not of paramount concern, a polytetrafluoroethylene wax is preferentially added to the ink composition.Type: GrantFiled: March 6, 1991Date of Patent: October 27, 1992Assignee: Sun Chemical CorporationInventors: Daniel J. Carlick, Robert W. Bassemir, Ramasamy Krishnan, Richard R. Durand, Jr.
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Patent number: 5109038Abstract: Polymer particles which carry, implanted on their surface, amphiphilic molecules carrying ion-forming or reactive groups, and dispersions thereof, which may be prepared by contacting a latex of particles of a polymer having a glass transition temperature Tg greater than about 40.degree. C., with an amphophilic compound having an HLB greater than or equal to 10 and a molecular weight greater than or equal to 400. The contacting is carried out at a temperature within the glass transition zone of the polymer, until enmeshing of the polymer chains and of the hydrophobic blocks of the amphiphilic compound has been achieved. The hydrophilic block of the amphiphilic compound carries at least one ion-forming or reactive group. The particles and their dispersions are useful in biological applications.Type: GrantFiled: June 5, 1990Date of Patent: April 28, 1992Assignee: Rhone-Poulenc ChimieInventors: Bernard Chauvel, Jean-Claude Daniel, Christian Pusineri
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Patent number: 5084500Abstract: A vinylidene chloride resin comprising (A) 90 to 99% by weight of vinylidene chloride and 1 to 10% by weight of an acrylic or methacrylic monomer is mixed with (B) 0.5 to 5% by weight, based on the resin, of a low-molecular-weight or high-molecular-weight plasticizer and (C) 0.2 to 5% by weight, based on the resin, of a condensed phosphoric acid salt. Even if this resin composition is exposed to high temperatures, thermal decomposition of the vinyl chloride resin is prominently controlled. When this vinylidene chloride resin composition is laminated with a thermoplastic resin having a thermoforming temperature higher than the thermoforming temperature of the vinylidene chloride resin, a packaging resin laminate having an excellent gas-barrier property is obtained.Type: GrantFiled: May 5, 1988Date of Patent: January 28, 1992Assignee: Toyo Seikan Kaisha Ltd.Inventors: Muneki Yamada, Fumio Kano
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Patent number: 5041287Abstract: A composition for forming a coating comprising polyvinylidene difluoride and an aqueous emulsion of acrylates, methacrylates, an unsaturated carboxylic acid and/or acrylamide and a solvent having a low boiling point. The composition can be used to form a bandage or glove in situ.Type: GrantFiled: February 13, 1990Date of Patent: August 20, 1991Assignee: Terry L. DriggersInventors: Terry L. Driggers, Peter Holemans, W. Novis Smith
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Patent number: 5002989Abstract: The present invention is a formulated barrier composition containing tetrasodium pyrophosphate or magnesium hydroxide, high density polyethylene, epoxidzed vegetable oil, oxidized polyolefin and a paraffin or polyolefin wax. The composition has a substantially lower oxygen permeability than existing compositions and is at least equally extrudable.Type: GrantFiled: September 1, 1989Date of Patent: March 26, 1991Assignee: The Dow Chemical CompanyInventors: John A. Naumovitz, Steven R. Jenkins, Mark J. Hall, Stephen R. Betso
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Patent number: 4973616Abstract: Toluene sulfonate salts of 2-alkyl imidazolines, e.g., 2-undecyl-4,4,5,5-tetramethyl imidazoline, are described. These compounds may be used as internal or external antistatic agents for fibers, e.g., acrylic fibers, and synthetic polymers, e.g., polystyrene.Type: GrantFiled: February 26, 1990Date of Patent: November 27, 1990Assignee: PPG Industries, Inc.Inventor: Cheruthur Govindan
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Patent number: 4959406Abstract: Plastic containing small amounts of titanium dioxide and, if appropriate, carbon black and an additive which reduces the tracking resistance, for the production of laser-writable mouldings.Type: GrantFiled: February 6, 1989Date of Patent: September 25, 1990Assignee: Bayer AktiengesellschaftInventors: Eckard Foltin, Hans-Werner Depcik, Karl Huff, Alfred Pischtschan, Mehmet C. Yesildag, Reiner Erkelenz
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Patent number: 4952622Abstract: Polymer particles which carry, implanted on their surface, amphiphilic molecules carrying ion-forming or reactive groups, and dispersions thereof, which may be prepared by contacting a latex of particles of a polymer having a glass transition temperature Tg greater than about 40.degree. C., with an amphiphilic compound having an HLB greater than or equal to 10 and a molecular weight greater than or equal to 400. The contacting is carried out at a temperature within the glass transition zone of the polymer, until enmeshing of the polymer chains and of the hydrophobic blocks of the amphiphilic compound has been achieved. The hydrophilic block of the amphiphilic compound carries at least one ion-forming or reactive group. The particles and their dispersions are useful in biological applications.Type: GrantFiled: May 6, 1988Date of Patent: August 28, 1990Assignee: Rhone Poulenc ChimieInventors: Bernard Chauvel, Jean-Claude Daniel, Christian Pusineri
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Patent number: 4925893Abstract: Aqueous-based, film-forming and ambient-temperature autoxidisably crosslinkable coating composition comprising an aqueous latex of a film-forming copolymer having residual unsaturation for autoxidative cross-linking puuposes, an autoxidation catalyst, preferably a drier salt, and optionally a multi-functional crosslinking material, wherein the copolymer has a gel fraction of at least 5% by weight which has been formed by the early addition of a multi-functional comonomer in the copolymerization, with a low reactivity multi-functional comonomer being added late in the copolymerization to provide the residual unsaturation.Type: GrantFiled: June 30, 1988Date of Patent: May 15, 1990Assignee: Imperial Chemical Industries PLCInventors: John C. Padget, Stephen G. Yeates, Mary R. R. Marsh
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Patent number: 4904742Abstract: Binders comprising the association of chlorinated vinyl resins and quaternary ammonium salts are resistant to corrosion, fouling, and organisms in an aqueous medium.The binders are obtained by substituting the chlorines of the polymer with a molecule having a primary or secondary amine function and a tertiary amine function, and then quaternizing the tertiary amine function by an alkyl halide.The binders thus obtained are useful in the production of coatings resistant to fouling and organisms present in an aqueous medium, of bacterial anticorrosion coatings and coatings with fungicidal properties.Type: GrantFiled: October 29, 1987Date of Patent: February 27, 1990Assignee: Universite de ProvenceInventors: Alain Perichaud, Georges Sauvet
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Patent number: 4843117Abstract: The present invention relates to compositions and methods for reducing the melt viscosity of vinylidene chloride containing polymers having a majority of polymerized vinylidene chloride. The methods involve introducing a solid solvent into a vinylidene chloride containing polymer. The solid solvent is compatible with vinylidene chloride containing polymers at a processing temperature above the solid solvent melting point and will reduce the melt viscosity and improve processing of the vinylidene chloride containing polymer. Upon cooling below the solid solvent melting point the solid solvent will beocme microdispersed in the vinylidene chloride containing polymer with little or no solid solvent remaining dissolved in the vinylidene chloride containing polymer. One such solid solvent is dimethyl sulfone.Type: GrantFiled: February 17, 1987Date of Patent: June 27, 1989Assignee: The Dow Chemical CompanyInventor: Chan I. Chung
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Patent number: 4806590Abstract: Aqueous-based sealant composition comprising at least one vinylidene chloride copolymer which has modal molecular weight Mp of at least 200,000, wherein the composition has Tg below 0.degree. C. The vinylidene chloride copolymer preferably includes polymerized units of an internally plasticizing comonomer and an unsaturated carboxylic acid. The composition preferably includes an external plasticizer and a filler material (particularly untreated calcium carbonate).Type: GrantFiled: May 20, 1987Date of Patent: February 21, 1989Assignee: Imperial Chemical Industries PLCInventors: John C. Padget, Donald H. McIlrath