Polyvinyl Alcohol Or Modified Forms Thereof Patents (Class 524/557)
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Patent number: 6608121Abstract: A water-soluble resin composition is provided which comprises (i) 100 parts by weight of a polyvinyl alcohol polymer having a 1,2-glycol linkage content of at least 1.8 mole percent and a degree of hydrolysis of at least 90 mole percent, (ii) 1 to 50 parts by weight of a plasticizer and (iii) 5 to 50 parts by weight of a monosaccharide and/or a polysaccharide, optionally together with (iv) 1 to 20 parts by weight of an inorganic filler. Also provided is a water-soluble resin composition which comprise (i′) 100 parts by weight of a polyvinyl alcohol polymer having a 1,2-glycol linkage content of at least 1.8 mole percent and a degree of hydrolysis of 92 to 99 mole percent, (ii′) 1 to 50 parts by weight of a plasticizer and (iv′) 1 to 20 parts by weight of an inorganic filler, optionally together with (iii′) 5 to 50 parts by weight of a monosaccharide and/or polysaccharide. Further provided are water-soluble films produced by using those water-soluble resin compositions.Type: GrantFiled: July 20, 2001Date of Patent: August 19, 2003Assignee: Kuraray Co., Ltd.Inventors: Takanori Isozaki, Naoki Fujiwara, Kazuyuki Somemiya, Shintaro Hikasa
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Publication number: 20030153663Abstract: This invention relates to compositions containing polyvinyl acetate plastics and alkoxylated alcohols as plasticisers.Type: ApplicationFiled: January 24, 2003Publication date: August 14, 2003Inventor: Dirk Schar
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Patent number: 6605673Abstract: The invention relates to crosslinked polymerizates which are capable of absorbing, which are based on partially neutralized, monoethylenically unsaturated monomers that carry acidic groups, which exhibit improved properties, in particular, with regard to their ability to transport liquids when in a swollen state, and which are subsequently crosslinked on the surface thereof at temperatures ≧150° C. with a combination consisting of polyol used as a subsequent crosslinker compound and of a cation provided in the form of an aqueous solution.Type: GrantFiled: August 29, 2001Date of Patent: August 12, 2003Assignee: Stockhausen GmbH & Co., KGInventors: Richard Mertens, Jörg Harren
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Patent number: 6599631Abstract: Inorganic particle/polymer composites are described that involve chemical bonding between the elements of the composite. In some embodiments, the composite composition includes a polymer having side groups chemically bonded to inorganic particles. Furthermore, the composite composition can include chemically bonded inorganic particles and ordered copolymers. Various electrical, optical and electro-optical devices can be formed from the composites.Type: GrantFiled: March 27, 2001Date of Patent: July 29, 2003Assignee: NanoGram CorporationInventors: Nobuyuki Kambe, Yigal Do Blum, Benjamin Chaloner-Gill, Shivkumar Chiruvolu, Sujeet Kumar, David Brent MacQueen
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Patent number: 6596807Abstract: A vinyl alcohol polymer composition (II) is produced by a process of providing a reaction liquid comprising a solution containing a vinyl carboxylate polymer and, a first metal alkoxide (I) having at least one functional group and/or an oligomer (I) having at least one functional group obtained from said metal alkoxide (I); a step of simultaneously effecting (a) saponification of said vinyl carboxylate polymer and (b) reaction in which at least part of the functional groups of said metal alkoxide (I) and/or said oligomer (I) participates, thereby obtaining a vinyl alcohol polymer composition (I); and a step of preparing a solution (A) containing said vinyl alcohol polymer composition (I), followed by adding to the solution (A) a second metal alkoxide (II) and/or an oligomer (II) obtained from the metal alkoxide (II) or another solution (B) containing the metal alkoxide (II) and/or the oligomer (II) derived from the metal alkoxide (II), to prepare an intermediate product solution (C), and then removing the solType: GrantFiled: July 30, 2001Date of Patent: July 22, 2003Assignee: Kuraray Co., Ltd.Inventors: Tatsuya Oshita, Goki Uehara, Nobuhisa Senda, Yoshiki Takeda, Yukiatsu Komiya, Syuichi Kanao, Shigeki Takada, Naoki Kawakami, Kanenori Ito
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Patent number: 6593408Abstract: An organic polymer/inorganic fine particle-dispersed aqueous solution having excellent dispersion stability comprising a water-slightly soluble inorganic fine particle (B) having a particle diameter of 500 nm or less obtained by reacting (a) a compound of a second group element in the periodic table with (b) at least one compound selected from organic acids, inorganic acids and salts thereof in the presence of a water-soluble or water-dispersible synthetic high molecular compound (A) having a carboxyl group in a proportion of (A):(B)=10:90 to 99.99:0.01 (weight ratio). The above dispersed aqueous solution can be used as a paper-making chemical, an ink jet recording chemical, medical materials and cosmetic raw materials.Type: GrantFiled: May 11, 2001Date of Patent: July 15, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Toshihiko Takaki, Masaru Tanabe, Hiroshi Itoh, Toshiki Oyanagi
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Patent number: 6573327Abstract: An aqueous solution of partially hydrolyzed vinyl ester resin having an excellent stability and useful particularly as a secondary agent for suspension polymerization of vinyl compounds, wherein the partially hydrolyzed vinyl ester resin has a degree of hydrolysis of at most 70% by mole, it is contained in a concentration of at most 50% by weight, and it satisfies the equation: 1n y>0.042x+1.0, in which y is the cloud point (° C.) of a 30% by weight aqueous solution of the partially hydrolyzed vinyl ester resin, and x is the degree of hydrolysis (% by mole) of the partially hydrolyzed vinyl ester resin.Type: GrantFiled: September 29, 1999Date of Patent: June 3, 2003Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventor: Mitsuo Shibutani
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Patent number: 6573326Abstract: The invention relates to thickeners based on fully or partially hydrolyzed vinyl alcohol copolymers with a molecular weight Mw greater than 100,000, obtainable by hydrolyzing vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C1-5)-alkylvinyl esters of C1-5 carboxylic acids, allyl esters, vinyl esters of alpha-branched C5-12 carboxylic acids, and C1-18-alkyl (meth)acrylates, in the form of their aqueous solution or in powder form.Type: GrantFiled: August 9, 2001Date of Patent: June 3, 2003Assignee: Wacker-Chemie GmbHInventors: Theo Mayer, Werner Bauer, Harald Zeh, Bernd Kayser, Andreas Bacher, Ulf Dietrich
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Publication number: 20030100666Abstract: The invention related to a hydrogel forming aqueous composition of water soluble polymers having a sufficiently high coherency that it substantially not is dispersed when being injected into an aqueous environment of a body site such as the capsular bag of the eye to undergo a photoinitiated crosslinking reaction. The water soluble polymers either can be a water-soluble polymer bearing free acrylic, or other vinylic groups capable of facile free radical reaction with a polymeric water-soluble photoinitiator also present in the composition, or a water-soluble polymer bearing both free acrylic, or other vinylic groups capable of facile free radical reaction and photoinitiator, wherein both polymers are capable of being crosslinked when irradiated with light of wavelengths greater than about 305 nm to form the hydrogel.Type: ApplicationFiled: July 16, 2002Publication date: May 29, 2003Inventors: Jacqueline Hermina DeGroot, Kenneth Albert Hodd, Hendrik Jan Haitjema
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Publication number: 20030092809Abstract: The present invention provides a composition for forming a removable coating for an optical substrate. In this form, the composition is an aquesous emulsion having one or more substantially non-polar polymers.Type: ApplicationFiled: November 21, 2002Publication date: May 15, 2003Inventors: Fang Chen, Arambally Natiala Sunder Ram
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Patent number: 6548605Abstract: An aqueous emulsion composition that has high adhesion strength for a variety of materials so that it can be used for the adhesive bonding of even molded products and an adherent composition containing the aqueous emulsion composition. The aqueous emulsion composition comprises a carboxyl modified resin of a saponified ethylene-vinyl acetate copolymer and a surface active agent. This aqueous emulsion composition can be suitably used as adherent composition, such as an primer and an adhesive, for adhesive bonding a variety of molded products, such as plastic films, plastic sheets, plastic foams, fibers, synthetic leathers and metals. Due to the aqueous composition, the composition can have little risk to catch fire and can provide good sanitation in the environment.Type: GrantFiled: November 28, 2000Date of Patent: April 15, 2003Assignee: Mitsui Takeda Chemicals Inc.Inventors: Hirofumi Morita, Susumu Okatani
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Publication number: 20030065079Abstract: Building materials containing copolymers derived from vinyl ester, (meth)acrylic ester and optionally ethylene comonomers, stabilized with a polyvinylalcohol protective colloid, as their aqueous dispersions or as redispersible polymer powders which are redispersible in water, exhibit improved processing properties and set properties.Type: ApplicationFiled: May 22, 2002Publication date: April 3, 2003Applicant: Wacker Polymer Systems GmbH & Co. KGInventor: Hans-Peter Weitzel
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Patent number: 6541560Abstract: Volatile organic compounds containing carbonyl groups can be released by lithographic printing materials including inks, fountain solutions and printed materials. Volatile organic compounds containing carbonyl groups can also have a serious negative impact on the taste or odor of staple materials such as foodstuffs. The volatile materials can be retained in the lithographic compositions and printed materials can be trapped in the printed materials using an improved reactive technology involving a chemically reactive trap for such volatile carbonyl containing compounds.Type: GrantFiled: March 15, 2000Date of Patent: April 1, 2003Assignees: Graphic Packaging Corporation, Cellresin Technologies, LLCInventors: Boris Vasilyevich Rozynov, William J. Coyle, Willard E. Wood, Neil J. Beaverson
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Publication number: 20030047111Abstract: The invention provides a coating solution for forming transparent silica coating film which solution is stable and can readily form comparatively thick silica coating film on a substrate through single application of the coating solution without use of an organic solvent. The invention also provides a method for producing transparent silica coating film. The coating solution comprising an aqueous solution contains at least one silicon compound which is selected from the group consisting of silicon oxide, silicic acid, and a silicic acid hydrate and which has been modified to have silanol groups; a strong organic base; and a water-soluble polymer, wherein the silicon compound is dissolved in the aqueous solution in presence of the strong organic base.Type: ApplicationFiled: September 12, 2002Publication date: March 13, 2003Inventors: Kazuma Niume, Takasi Utida
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Publication number: 20030036600Abstract: The present invention is a process for preparing high concentration polyvinyl alcohol (PVA) aqueous mixtures, wherein the PVA solid concentration is at least 14% in the mixture.Type: ApplicationFiled: July 23, 2002Publication date: February 20, 2003Inventors: William J. Knapp, Richard K. Grenville
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Publication number: 20030008966Abstract: The preparation and usefulness of polymer-ceramic mixed matrix composite materials comprising one or more organic polymers and a nano sized dispersion of inorganic metal oxide particles throughout the polymer(s) are described. The mixed matrix materials are used as mass transfer agents by fabricating the matrix materials into thin membranes and using them to dehydrate organic streams by pervaporation/vapor permeation separation processes. In addition, mixed matrix gels of similar composition are prepared in a variety of shapes and show a remarkable degree of reversible water absorbing properties. Mechanical and physical properties of the gels, such as extent of swelling in water, can be controlled by controlling the mixed matrix material composition.Type: ApplicationFiled: May 15, 2002Publication date: January 9, 2003Inventors: Leland Morris Vane, Ravi Prasad Ponangi
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Patent number: 6495623Abstract: A polyvinyl alcohol having at least 1.9 mol % of 1,2-glycol bonds is used as a dispersant for emulsion polymerization or a dispersant for suspension polymerization, and this ensures good polymerization stability even when its amount used is reduced. The aqueous emulsion comprising the polyvinyl alcohol is resistant to water and the viscosity of the aqueous emulsion depends little on ambient temperatures. The vinylic polymers obtained through suspension polymerization in the presence of the polyvinyl alcohol are yellowed little, and the waste water in the suspension polymerization pollutes little the environment.Type: GrantFiled: July 31, 2001Date of Patent: December 17, 2002Assignee: Kuraray Co., Ltd.Inventors: Seiji Tanimoto, Naokiyo Inomata, Naoki Fujiwara
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Patent number: 6472470Abstract: Vinyl alcohol polymers having an ethylene unit content of 2 to 19 mole %, a polymerization degree of 200 to 2,000, a degree of saponification of 80 to 99.99 mole % and a total content of carboxyl group and lactone rings of 0.02 to 0.4 mole % are excellent in thermal stability, water resistance, gas-barrier properties, water vapor-barrier property, stability of aqueous solution kept at low temperatures and biodegradability.Type: GrantFiled: December 2, 1999Date of Patent: October 29, 2002Assignee: Kuraray Co., Ltd.Inventors: Naoki Fujiwara, Kazuyuki Somemiya, Takeshi Kusudou
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Publication number: 20020151632Abstract: An adhesive having a resin selected from polyvinyl butyral resins, phenolic resins, epoxy resins, and mixtures thereof, and at least one type of filler such as a carbon filler, for use in seaming components useful in electrostatographic, contact electrostatic, digital and other like machines.Type: ApplicationFiled: April 11, 2001Publication date: October 17, 2002Applicant: Xerox CorporationInventors: Ihor W. Tarnawskyj, Joseph A Swift, Christopher P. Manos, Theodore Lovallo
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Publication number: 20020132890Abstract: The present invention is directed to a water-based acrylic emulsion dispersant to be used as a grind resin to incorporate inorganic pigment into a pigment dispersion for a coating composition. The acrylic emulsion dispersant is the reaction product of butyl methacrylate, butyl acrylate, styrene, methyl ether polyethylene glycol methacrylate, polyethylene glycol methacrylate, and polyphosphoric acid. The present invention is also directed to a method of preparing the acrylic emulsion dispersant. In this method, the butyl methacrylate, butyl acrylate, and styrene are combined with water to establish a first reaction blend. Similarly, the methyl ether polyethylene glycol methacrylate and the polyethylene glycol methacrylate are combined with water to establish a second reaction blend. Next, the first and second reaction blends are polymerized to form an intermediate emulsion polymer containing a hydroxyl group from the functionality of the polyethylene glycol methacrylate.Type: ApplicationFiled: December 22, 2000Publication date: September 19, 2002Inventors: Swaminathan Ramesh, JoAnn Lanza, Paul J. Harris
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Publication number: 20020120056Abstract: An environmentally benign and water dispersible corrosion inhibitor is disclosed. The corrosion inhibitor comprises a combination obtained by combining at least one of water dispersible polymers, water soluble silicates, water, additives, among other components.Type: ApplicationFiled: November 8, 2001Publication date: August 29, 2002Inventors: Donald W. Taylor, Todd W. Scrivens
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Patent number: 6441076Abstract: Production of a paper coating composition having improved low shear viscosity at a high solids level of fine particle size calcium carbonate. The improvement in low shear viscosity is achieved by dissolving a fine particle size, partially hydrolyzed, low molecular weight poly(vinyl alcohol) powder in an aqueous slurry of pigment particles containing predominantly fine particle size calcium carbonate. Dissolution of the poly(vinyl alcohol) is achieved without external heating or adding water to the slurry. The slurry can then be formulated with other components to produce the ink jet paper coating composition which, when applied to a paper substrate, provides excellent ink jet printability.Type: GrantFiled: September 20, 2001Date of Patent: August 27, 2002Assignee: Celanese International CorporationInventor: John Richard Boylan
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Patent number: 6391957Abstract: An aqueous emulsion-type release coating composition comprising (i) a product produced by reaction of an ethylene-vinyl alcohol copolymer represented by the formula (1): wherein the sum of n, m and m′ is an integer of 300-3,000, ratio of n/(n+m+m′) is 0.1-0.9, and ratio of m/(m+m′) is 0.9-1.0, with a C8-30 alkyl isocyanate, and (ii) a surface active agent which is a combination of a nonionic surface active agent having a hydrophilic-lyophilic balance (HLB) of not larger than 12, with an ionic surface active agent. The release coating composition is used as a release agent for a pressure sensitive adhesive tape or contact sheet.Type: GrantFiled: April 21, 1999Date of Patent: May 21, 2002Assignee: Ipposha Oil Industries Co., Ltd.Inventors: Kouji Kanemoto, Sadahiko Nishikawa
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Publication number: 20020055579Abstract: A vinyl alcohol polymer composition (II) is produced by a process of providing a reaction liquid comprising a solution containing a vinyl carboxylate polymer and, a first metal alkoxide (I) having at least one functional group and/or an oligomer (I) having at least one functional group obtained from said metal alkoxide (I); a step of simultaneously effecting (a) saponification of said vinyl carboxylate polymer and (b) reaction in which at least part of the functional groups of said metal alkoxide (I) and/or said oligomer (I) participates, thereby obtaining a vinyl alcohol polymer composition (I); and a step of preparing a solution (A) containing said vinyl alcohol polymer composition (I), followed by adding to the solution (A) a second metal alkoxide (II) and/or an oligomer (II) obtained from the metal alkoxide (II) or another solution (B) containing the metal alkoxide (II) and/or the oligomer (II) derived from the metal alkoxide (II), to prepare an intermediate product solution (C), and then removing the solType: ApplicationFiled: July 30, 2001Publication date: May 9, 2002Applicant: Kuraray Co., Ltd.Inventors: Tatsuya Oshita, Goki Uehara, Nobuhisa Senda, Yoshiki Takeda, Yukiatsu Komiya, Syuichi Kanao, Shigeki Takada, Naoki Kawakami, Kanenori Ito
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Patent number: 6380280Abstract: An ink jet recording element comprising a support having thereon an image-receiving layer comprising at least about 80% by weight of non-porous polymeric particles in a polymeric binder, the non-porous polymeric particles having a core/shell structure comprising a polymeric core covered with a shell of a water-soluble polymer.Type: GrantFiled: June 30, 2000Date of Patent: April 30, 2002Assignee: Eastman Kodak CompanyInventors: Richard J. Kapusniak, Jeanne E. Kaeding, John L. Muehlbauer, Dennis E. Smith, Gregory E. Missell
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Patent number: 6376599Abstract: An ink jet recording element comprising a support having thereon an image-receiving layer comprising non-porous polymeric particles in a polymeric binder, the non-porous polymeric particles being present in an amount of at least about 8 parts of particles per part of polymeric binder, and the non-porous polymeric particles having a degree of crosslinking of at least about 30 mole %.Type: GrantFiled: June 30, 2000Date of Patent: April 23, 2002Assignee: Eastman Kodak CompanyInventors: Richard J. Kapusniak, Jeanne E. Kaeding, John L. Muehlbauer, Dennis E. Smith, Gregory E. Missell
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Publication number: 20020042467Abstract: A treatment agent for hydrophilicity preferable for aluminum materials used for heat exchanger parts and air filter parts of air cleaner which can maintain the deodorizing property and hydrohilicity even after a long-time use, and a method of preparing said treatment agent. A treatment agent for hydrophilicity according to this invention comprising silica particulates and polymer of vinyl alcohol series in the weight ratio in the range 30:70˜70:30, amounting to 0.2˜25 weight percent in total of both relative to the entire treatment agent, in which said silica particulates are coated with said polymer of vinyl alcohol series, and dispersed in aqueous medium as coated particles having the average particle diameter 5˜1000 nm.Type: ApplicationFiled: May 12, 2001Publication date: April 11, 2002Inventors: Masahiko Matsukawa, Toshio Inbe, Tatsuo Yoshida
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Publication number: 20020042459Abstract: The invention relates to thickeners based on fully or partially hydrolyzed vinyl alcohol copolymers with a molecular weight Mw greater than 100,000, obtainable by hydrolyzing vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C1-5)-alkylvinyl esters of C1-5 carboxylic acids, allyl esters, vinyl esters of alpha-branched C5-12 carboxylic acids, and C1-18-alkyl (meth)acrylates, in the form of their aqueous solution or in powder form.Type: ApplicationFiled: August 9, 2001Publication date: April 11, 2002Applicant: Wacker-Chemie GmbHInventors: Theo Mayer, Werner Bauer, Harald Zeh, Bernd Kayser, Andreas Bacher, Ulf Dietrich
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Patent number: 6369152Abstract: An ink jet printing method, comprising the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with an ink jet recording element comprising a support having thereon an image-receiving layer comprising non-porous polymeric particles in a polymeric binder, the non-porous polymeric particles being present in an amount of at least about 8 parts of particles per part of polymeric binder, and the non-porous polymeric particles having a degree of crosslinking of at least about 30 mole %; C) loading the printer with an ink jet ink composition; and D) printing on the ink jet recording element using the ink jet ink in response to the digital data signals.Type: GrantFiled: June 30, 2000Date of Patent: April 9, 2002Assignee: Eastman Kodak CompanyInventors: Gregory E. Missell, Richard J. Kapusniak, Jeanne E. Kaeding, John L. Muehlbauer, Dennis E. Smith
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Publication number: 20020040078Abstract: The invention relates to the use of acetalized vinyl alcohol polymers with a molecular weight Mw greater than 100 000 as thickeners, the thickeners being obtained by acetalizing partially or fully hydrolyzed vinyl acetate homopolymers, or partially or fully hydrolyzed vinyl acetate copolymers which, besides vinyl acetate units, also contain comonomer units which derive from one or more comonomers selected from the group consisting of 1-(C1-5) alkylvinyl esters of C1-5 carboxylic acids, allyl esters, vinyl esters of alpha-branched C1-12 carboxylic acids, and C1-8-alkyl (meth)acrylates.Type: ApplicationFiled: August 9, 2001Publication date: April 4, 2002Applicant: Wacker-Chemie GmbHInventors: Bernd Kayser, Andreas Bacher, Werner Bauer, Ulf Dietrich, Marion Schmitz, Harald Zeh, Theo Mayer
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Publication number: 20020037971Abstract: This invention provides a method for producing a saponified ethylene-vinyl acetate copolymer in which visible imperfections (particularly fish eyes) of the saponified copolymer is inhibited. In this invention, a mixture solution is prepared by adding water to a methanol solution after saponifying an ethylene-vinyl acetate copolymer, and insoluble materials are removed from this mixture solution. Various types of filter or centrifugal separator are used to remove insoluble materials. It is preferable that the weight ratio of methanol to water is from 5:5 to 9:1, the concentration of the saponified copolymer is from 30 to 60 wt %, and the temperature is from 55 to 80° C. This method is particularly suitable for producing a saponified ethylene-vinyl acetate copolymer having an ethylene content of 20 to 70 mol % and a saponification degree of at least 95 mol %.Type: ApplicationFiled: June 28, 2001Publication date: March 28, 2002Applicant: Kuraray Co., Ltd.Inventors: Takaharu Kawahara, Toshio Tuboi
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Publication number: 20020035184Abstract: A method for reducing degradation during processing of polymers. An effective amount of a foam cell nucleating agent to reduce degradation in a polymer is added to the polymer. The polymer and the foam cell nucleating agent are mixed to obtain a molten plastic and processed to obtain an unfoamed product, resulting in a reduction of degradation in the unfoamed product. The processing is preferably selected from extrusion and injection molding.Type: ApplicationFiled: May 17, 2001Publication date: March 21, 2002Inventors: Deborah E. Plaver, Michael L. Mounts, Patrick M. Russell, Albert H. Case, Michael W. Potts
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Patent number: 6359057Abstract: A moldable composition comprising a polar polymeric resin, present in an amount ranging from 0.5-15% by weight, a filler, present in an amount up to 50% by weight, a thickening agent, present in an amount ranging from 0.1-3% by weight, a humectant, present in an amount up to 30% by weight, and water, present in an amount ranging from 20-70% by weight. Also provided is a method of making the composition as described.Type: GrantFiled: February 10, 2000Date of Patent: March 19, 2002Assignee: Binney & Smith, Inc.Inventor: Jie Li
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Patent number: 6337369Abstract: The present invention provides a polarizing film having a dichroic ratio of at least 20 and comprising a polyvinyl alcohol derivative with a polyvinylene structure as obtained from a polyvinyl alcohol material having a degree of polymerization of at least 2000. The polarizing film of the present invention has excellent polarizing properties in the range of the visible ray spectrum, and exhibits excellent durability when left in high-temperature and high-humidity surroundings for a long period of time. The polarizing film of the present invention is useful for a polarizing sheet laminated with a protective film for on-vehicle LCD that is placed in heavy temperature and humidity fluctuations, such as LCD navigation systems, LCD TV, etc.Type: GrantFiled: October 26, 1998Date of Patent: January 8, 2002Assignee: Kuraray Co., Ltd.Inventor: Takanori Isozaki
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Patent number: 6337370Abstract: Disclosed are inorganic-organic copolymers and their preparation using polyvinylalcohol-silane coupling agents. The inorganic-organic copolymers can be prepared through the reaction of silane-coupling agents containing hydroxy groups and silane groups with organic metal compounds. The inorganic-organic copolymers are of high transparency as well as shows superb moisture barrier characteristics and hydrophilicity and can be applied as resins or film coatings for many fields, including anti-fogging agents, anti-foaming agents, lubricants, paints, anti-corrosive coatings, water-resistant coatings, plastic or metal-protective coatings.Type: GrantFiled: June 1, 2000Date of Patent: January 8, 2002Assignee: Korean Advanced Institute of Science and TechnologyInventors: Byeong Soo Bae, Yoon Ki Choi, Young Joo Eo, Oun Ho Park
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Patent number: 6335395Abstract: A process for making a stable coating comprising an inorganic, anionic pigment, an organic, anionic binder and an organic, cationic mordant comprising: a) mixing the inorganic, anionic pigment with the organic, cationic mordant; b) lowering the pH of the mixture to below about 4; and c) adding the organic, anionic binder to the mixture, thus providing a coating composition which has an approximately constant viscosity over a period of time.Type: GrantFiled: December 1, 1999Date of Patent: January 1, 2002Assignee: Eastman Kodak CompanyInventors: Sridhar Sadasivan, Suresh Sunderrajan, Michelle M. Oakland, Patrick J. Whittaker, Elwood C. Samons, Craig T. Mollon
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Patent number: 6323360Abstract: The present invention discloses the synthesis of a novel crosslinker having the following structure: R1 is C(R8) (R9) wherein (R8) is H, or an alkyl group having 1-5 carbon atoms, and (R9) is H, or an alkyl group having 1-5 carbon atoms. R2 is H, or an alkyl group having 1-5 carbon atoms. R3 is H or an alkyl group having 1-5 carbon atoms. R4 is an alkyl group having 1-5 carbon atoms. R5 is H or an alkyl group having 1-5 carbon atoms. R6 is H or an alkyl group having 1-5 carbon atoms. R7 is C(R10) (R11) wherein (R10) is H, or an alkyl group having 1-5 carbon atoms, and (R11) is H, or an alkyl group having 1-5 carbon atoms. The crosslinker is stable in a basic environment, but decomposable in an acidic environment.Type: GrantFiled: November 14, 2000Date of Patent: November 27, 2001Assignee: The Research Foundation of State University of New YorkInventors: Eli Ruckenstein, Hongmin Zhang
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Publication number: 20010036988Abstract: Environmentally safe, e.g. biodegradable, paint stripper compositions comprising 10-99 parts dimethyl esters of C4-C6 aliphatic dibasic acids, 0.1-40 parts polyvinyl butyral and 1-90 parts water. The compositions can be mixed, e.g. in high shear to provide stable emulsions which strip paint, e.g. varnish from wood. Certain embodiments of the invention also comprise water soluble organic solvents, water-miscible organic solvents, surfactants, emulsifiers, thickeners and/or pigments.Type: ApplicationFiled: January 24, 2001Publication date: November 1, 2001Inventors: Paul E. Kestyn, Augustin T. Chen, Hong Zhao
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Patent number: 6294120Abstract: A purging agent which contains an ethylene-vinyl alcohol copolymer and which satisfies the conditions specified by the equations (1) and (2) below: 20≧BT(120)≧0.1 (1) 500≧BT(250)/BT(120)≧1.5 (2), where BT(120) is weight loss (%) on heating in nitrogen at 120° C. for 24 hours, and BT(250) is weight loss (%) on heating in nitrogen at 250° C. for 6 hours, rapidly discharges residual thermoplastic resin containing EVOH from molding equipment, and also rapidly discharges itself when a fresh resin is fed again to the equipment. This leads to a remarkable reduction in loss due to residual purging agent. In addition, the purging agent causes only a small amount of resin to stick to the equipment, even after repeated purging. After purging, it is possible to restore normal operation within a short period of time.Type: GrantFiled: June 18, 1997Date of Patent: September 25, 2001Assignee: Kuraray Co., Ltd.Inventors: Taichi Negi, Syukiti Kawamura, Hiromichi Nakano, Satoshi Hirofuji
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Publication number: 20010009942Abstract: A suspending agent-containing slurry is disclosed which comprises a dispersant and a particulate suspending agent having a particle size distribution in which the particle diameter at weight-cumulative 95%, from the minimum particle size, is 1 &mgr;m or smaller. A method for efficiently producing the suspending agent-containing slurry is also disclosed. A process for suspension polymerization by use of the suspending agent-containing slurry is further disclosed. The slurry not only has such an excellent suspending ability in suspension polymerization that it enables the production of vinyl polymer beads having a narrow bead size distribution, but also is capable of retaining this ability over long and of exhibiting the same ability even when it has a high concentration. The suspension polymerization process enables vinyl polymer beads having a narrow bead size distribution to be produced efficiently due to the use of the slurry.Type: ApplicationFiled: October 16, 1998Publication date: July 26, 2001Inventors: MITSUSHI MURATA, TSUNENORI TAKAHASHI, YUKIO KATO
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Patent number: 6262164Abstract: A loose-fill insulation product is provided which includes a dry mixture of loose-fill fiberglass and an inorganic (being composed of matter other than plant or animal) adhesive in the form of a redispersible powder. During application, the dry loose-fill mixture is coated with a liquid (e.g. water) so as to activate the adhesive. Thereafter, the loose-fill mixture with activated adhesive is blown or sprayed into a cavity (open or closed) so as to insulate same. According to certain embodiments, this mixture may be blown into open attic areas so as to insulate same and reduce the movement of loose-fill insulation. It has been found that the redispersible powder (RP) dry adhesive mixes more uniformly within the dry mixture and clings better to the glass fibers when the mixture is substantially free of anti-static material. In certain embodiments, a color dye is provided in the mixture, and is activated upon installation.Type: GrantFiled: September 8, 1999Date of Patent: July 17, 2001Assignee: Guardian Fiberglass, Inc.Inventors: Joseph T. Church, Charles Chenoweth, Gary E. Romes, Mark H. Vegedes
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Patent number: 6211289Abstract: Modified polyvinyl acetals are prepared by saponification of 1-alkylvinyl acetate-vinyl acetate copolymers, which contain 1-alkylvinyl acetate/vinyl acetate in a weight ratio of 1/99-40/60 and subsequent acetalization the saponification products containing at least 80% units of vinyl alcohol and 1-alkyl vinyl alcohol with one or more aliphatic aldehydes with 1-6 C atoms under acid catalysis in an aqueous and/or organic medium; as well as to a method for the manufacture and the use thereof, especially in printing inks.Type: GrantFiled: November 25, 1998Date of Patent: April 3, 2001Assignee: Wacker Chemie GmbHInventors: Peter Tschirner, Peter Heiling, Otto-Sebastian Huber, Guenter Braunsperger, Klaus Haefner, Georg Friedl
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Patent number: 6207751Abstract: Disclosed is a semicarbazide derivative represented by formula (1) or a terminal-blocked form thereof: wherein R1 represents a terminal isocyanate group-free polyisocyanate residue or a terminal isocyanate group-free triisocyanate residue; R2 represents an alkylene group, a cycloalkylene group, or an arylene group; each R3 independently represents a hydrogen atom or an alkyl group; n is zero or 1; and each of and m is independently zero or a positive integer, provided l that l and m satisfy the relationship 3≦(l+m)≦20. Also disclosed is (&dgr;) a composition comprising (&agr;) at least one member selected from the group consisting of the semicarbazide derivative and a terminal-blocked form thereof and (&bgr;) at least one member selected from the group consisting of a hydrophilic group-containing compound and a terminal-blocked form thereof.Type: GrantFiled: February 25, 1999Date of Patent: March 27, 2001Inventors: Akira Nakabayashi, Tetsuya Murakami
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Patent number: 6200720Abstract: A graft resin having a structure of the formula (1) and having a number average molecular weight of 2,000 to 50,000, has excellent low-temperature moldability and exhibits an excellent shelf life against softening when stored at high temperatures, and an electrostatic charge developing toner containing the above graft resin as a binder exhibits excellent low-temperature fixing properties, developability and transferability without impairing the shelf life.Type: GrantFiled: June 8, 1999Date of Patent: March 13, 2001Assignee: Tomoegawa Paper Co., Ltd.Inventor: Toshio Tagami
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Patent number: 6177501Abstract: Color images with high fixation comparable to that of silver salt photographic images are formed on printing papers, using aqueous ink compositions by ink jet recording. Color images thus formed have high saturation and high resolution. An intercalated compound capable of fixing water-soluble dyes to a printing paper due to the intercalation based on ion-exchanging between them is incorporated into the dye-receiving layer 2 of the paper, on which color images are formed by ink jet recording using an aqueous ink composition containing a water-soluble dye. The content of the intercalated compound in the layer 2 is from 10 to 90% by weight. As the intercalated compound, montmorillonoids are preferred when water-soluble cationic dyes are used while hydrotalcite-group minerals are preferred when water-soluble anionic dyes are used. FIG. 1 is selected.Type: GrantFiled: November 12, 1997Date of Patent: January 23, 2001Assignee: Sony CorporationInventors: Kengo Ito, Yoshio Fujiwara
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Patent number: 6146497Abstract: Additives for addition to starting materials in cellulose based products for imparting strength and crepe. Additives for use in paper production which impart strength to the product and which can be used in creping adhesives. Enzyme activated resins for use in paper production. Enzyme-activated adhesives for use in paper production. Paper products comprising the aforementioned additives or resins. Methods for imparting strength or crepe to paper products.Type: GrantFiled: January 16, 1998Date of Patent: November 14, 2000Assignee: Hercules IncorporatedInventor: Tuyen T. Nguyen
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Patent number: 6143821Abstract: The present invention relates to powdery absorbents for water and aqueous liquids, which are based on water-swellable, but not water-soluble, polymers, are cross-linked, and are built up of partially neutralized, monoethylenically unsaturated, acid groups-containing monomers, optional further monomers copolymerizable with these, and optional polymers suitable as a graft basis. These polymers are produced by using a cross-linker combination consisting ofCH.sub.2 .dbd.CR.sup.5 --CO--(OCHR.sup.3 --CHR.sup.3).sub.z O--CH.sub.2 --CR.sup.5 .dbd.CH.sub.2 I.R.sup.1 --[O(CHR.sup.3 --CHR.sup.3 O).sub.u --CO--R.sup.2 ].sub.x II.withR.sup.1 : multivalent C.sub.2-10 -alkyl,R.sup.2 : linear or branched C.sub.2-10 -alkenyl,R.sup.3 : H, CH.sub.3, C.sub.2 H.sub.5,R.sup.5 : H, CH.sub.3,x: 2-6,u: 0-15,z: 3-20and a secondary cross-linker. Superficial secondary cross-linkage achieves a property combination of high retention, high absorption under pressure, low soluble contents, and a rapid liquid absorption.Type: GrantFiled: May 20, 1998Date of Patent: November 7, 2000Assignee: Stockhausen GmbH & Co. KGInventor: Jochen Houben
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Patent number: 6136916Abstract: This invention relates to a formaldehyde-free curable aqueous composition containing a polyacid, a polyol and a phosphorous-containing accelerator. The composition may be used as a binder for heat resistant nonwovens such as nonwovens composed of fiberglass.Type: GrantFiled: March 27, 1998Date of Patent: October 24, 2000Assignee: Rohm and Haas CompanyInventors: Charles Thomas Arkens, Robert David Gleim
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Patent number: 6123871Abstract: Photoluminescence polymers, processes for preparing these novel photoluminescence polymers and methods for their use are provided. The photoluminescence polymers having one or more photoluminescence pigments dispersed in an aqueous solution of polyvinyl alcohol in the ratios from about 2:1 to 1:5 by weight. These novel photoluminescence polymers are moldable, non-toxic, non-radioactive, environmentally safe and have been found to be potent photoluminescence polymers that provide a bright after glow for extended periods of time up to 10 hours or more.Type: GrantFiled: January 11, 1999Date of Patent: September 26, 2000Inventor: Michael Lee Carroll
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Patent number: H1936Abstract: An aqueous, coatable, thermally condensable composition is disclosed. The coating is based on dispersions of vinyl acetate polymers in water. Uniquely, the coating can be advantageously used for both nylon and polyester yarns. The coated yarns exhibit performance equivalent to or better than coated yarns based on traditional compositions.Type: GrantFiled: December 17, 1998Date of Patent: January 2, 2001Assignee: Solutia, Inc.Inventors: Tingdong Lin, Jing-Peir Yu, P. Robert Peoples