Solid Polymer Derived From Aldehyde, Aldehyde Derivative, Or Liquid Polymer Thereof As Sole Reactant And Wherein None Of The Reactants Contains A Plurality Of Methylol Groups Or Derivatives Thereof Patents (Class 525/398)
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Patent number: 4826906Abstract: Disclosed herein is a poly(arylene thioether-ketone) composition improved in melt stability and crystallinity, which comprises (A) 100 parts by weight of a melt-stable poly(arylene thioether-ketone) (PTK) and (B) 0.1-30 parts by weight of at least basic compound selected from the group consisting of the hydroxides, oxides and aromatic carboxylic acid salts of Group IIA metals of the periodic table other than magnesium and the hydrocarbyl oxides, aromatic carboxylic acid salts, carbonates, hydroxides, phosphates and borates of Group IA metals of the periodic table. The phosphates and borates include condensation products. The PTK has predominant recurring units of the formula ##STR1## and having a melting point, Tm of 310.degree.-380.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g, a melt crystallization peak-temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C. and a reduced viscosity of 0.2-2 dl/g.Type: GrantFiled: June 17, 1988Date of Patent: May 2, 1989Assignee: Kureha Kagaku Kogyo K.K.Inventors: Yoshikatsu Satake, Ken Kashiwadate, Yo Iizuka, Toshitaka Kouyama, Takayuki Katto, Zenya Shiiki
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Patent number: 4814397Abstract: Incorporation of 0.1-10 weight percent of certain polymers and/or oligomers containing both hydroxy groups and at least one other functional group that is a stronger Lewis base than the hydroxy groups into polyacetal molding compositions results in improved thermal stability of such compositions.Type: GrantFiled: February 27, 1987Date of Patent: March 21, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Ernest R. Novak
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Patent number: 4814424Abstract: An improved method of stabilizing a polyoxymethylene copolymer, which comprises(1) heat-melting a crude copolymer of trioxane and a cyclic ether and/or a cyclic acetal to form a first stabilized copolymer having a decomposition ratio (D.sub.220.sup.60), determined when it is heated at 220.degree. C. for 60 minutes in vacuum, of up to 2% by weight, and then(2) bringing the first stabilized copolymer into contact with steam containing 0.01 to 5% by weight of a basic compound at a temperature of at least 100.degree. C. but not exceeding the melting point of the copolymer to form a second stabilized copolymer.Type: GrantFiled: November 13, 1987Date of Patent: March 21, 1989Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takeo Suzumori, Isamu Masumoto, Mitsuo Nakagawa, Yukihiro Iha
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Patent number: 4812519Abstract: The modification of thermoplastic polymers with a combination of azidosilanes and monolefinically unsaturated monomers and subsequent crosslinking by moisture.Type: GrantFiled: October 15, 1987Date of Patent: March 14, 1989Assignee: Hercules IncorporatedInventor: Paul C. Gillette
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Patent number: 4788258Abstract: Low Tg copolymers of trioxane and 1,3-dioxolane which have a dioxolane content greater than 65 mol percent and less than about 75 mol percent and an IV of from about 1.0 to about 2.3, and which are non-crystalline at room temperature or above, are disclosed. These polymers, when blended with crystalline oxymethylene polymers, improve the latter's impact properties. They can also be used as adhesives for crystalline oxymethylene polymers.Type: GrantFiled: September 14, 1987Date of Patent: November 29, 1988Assignee: Hoechst Celanese CorporationInventors: George L. Collins, Paul Zema, William M. Pleban
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Patent number: 4760119Abstract: Incorporation of 0.6-5.0 weight percent of certain ethylene oxide/propylene oxide copolymers into polyacetal molding compositions results in improved hydrolytic stability of such compositions.Type: GrantFiled: April 30, 1986Date of Patent: July 26, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventors: Charles L. Liotta, Norman E. West
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Patent number: 4758608Abstract: Ultraviolet curable terpolymers of trioxane, from at least 65 weight percent to about 75 weight percent of 1,3-dioxolane and from about 2 weight percent to about 20 weight percent of a monoethylenically unsaturated aliphatic diol formal having at least 4 carbon atoms in its main chain, e.g., 4,7-dehydro- 1,3-dioxepin, which are non-crystalline at room temperature or above are disclosed. These terpolymers, when admixed with a multifunctional crosslinking monomer, e.g., a multifunctional acrylate such as 1,6-hexanediol diacrylate, and a photosensitizer, e.g., a benzoin compound such as benzoin isobutyl ether, can be cured to an insoluble, non-tacky, rubbery state using UV radiation. The thus-cured polymeric materials form useful crosslinked films, and when cryogenically ground to a suitable small particle size can be blended with conventionally prepared crystalline oxymethylene homo-, co- and terpolymers to improve the latters' impact properties.Type: GrantFiled: September 14, 1987Date of Patent: July 19, 1988Assignee: Hoechst Celanese CorporationInventors: George L. Collins, Paul Zema, William M. Pleban
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Patent number: 4758634Abstract: Electroactive polymers of the structure and formula ##STR1## in their neutral and ionized forms, where the backbone group R.sub.b is selected from or is a combination of five- and six-membered rings capable of aromatic and quinonoid bonding structures, R.sub.s is selected from aliphatic, aromatic and heterocyclic groups and x, y are positive integers from 1 to 5 and m is a positive integer from 2 to about 10,000, together with a method of making them are disclosed.Type: GrantFiled: September 8, 1986Date of Patent: July 19, 1988Assignee: Honeywell Inc.Inventor: Samson A. Jenekhe
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Patent number: 4751272Abstract: A process for producing an oxymethylene copolymer, comprising the steps of polymerizing trioxane and cyclic ether in the presence of a boron trifluoride catalyst, adding a hindered amine compound to the polymer obtained by said polymerization, and stabilizing instable chain ends of the polymer. The oxymethylene copolymer thus obtained provides excellent heat resistance and superior mechanical properties.Type: GrantFiled: April 27, 1987Date of Patent: June 14, 1988Assignee: Toray Industries, Inc.Inventors: Sigeru Okita, Yoshiyuki Yamamoto, Toshihiro Hatsu
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Patent number: 4710408Abstract: Disclosed is a primer coating for cycloolefin polymer articles comprising an alkyd resin, a urea-formaldehyde resin, at least one 2-4 carbon alkanol, a nonleafing aluminum pigment and an acid catalyst. A cellulose ester and a solvent for the cellulose ester may also be included. The primer coating prevents migration of antioxidant from the cycloolefin polymer into a subsequently applied topcoat.Type: GrantFiled: July 11, 1986Date of Patent: December 1, 1987Assignee: Hercules IncorporatedInventor: Wayne A. Kraus
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Patent number: 4689392Abstract: A highly reactive aromatic hydrocarbon-formaldehyde resin having a diarlymethane content of not more than 5% by weight, essentially containing reactive groups of any one of CH.sub.2 OH, CH.sub.2 OCH.sub.3 and CH.sub.2 OCH.sub.2 OCH.sub.3 at both molecular terminals and having a xylenol value of at least 15 mol/kg as an index of reactivity with a compound having active hydrogen atoms is prepared by reacting an aromatic hydrocarbon such as xylene, mesitylene or naphthalene with formaldehyde at a molar ratio of the formaldehyde to the aromatic hydrocarbon of 2.0 to 5.0, a sulfuric acid concentration of 15 to 35% by weight in an aqueous layer and a reaction temperature of 80.degree. to 110.degree. C. while controlling a formaldehyde conversion within a range of 50 to 70% by mole over the range 4 to 8 hours.Type: GrantFiled: March 26, 1986Date of Patent: August 25, 1987Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akira Miyamoto, Toshiaki Nishimura, Yoshitaka Yamagishi, Yasumitsu Higuchi
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Patent number: 4689373Abstract: Mechanical properties, especially tensile and impact properties, of molding compositions comprising at least one thermoplastic oxymethylene polymer and optionally also containing an impact-enhancing amount of a polyurethane, can be improved by incorporating into the molding composition an effective amount greater than 10 weight percent of the composition of a monomeric formaldehyde/amino compound condensation product or prepolymeric amino resin selected from condensation products of formaldehyde and at least one of guanidine, urea, a substituted or unsubstituted guanamine and melamine, preferably having a degree of polymerization of about 2-5. An acid catalyst can be employed to promote the cross-linking reactions of the prepolymeric amino resin. In the compositions comprising polyurethane, amounts of the amino resin of less than 10 weight percent can be used.Type: GrantFiled: October 24, 1985Date of Patent: August 25, 1987Assignee: Celanese CorporationInventors: Andrew B. Auerbach, Derrick B. McKie
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Patent number: 4663397Abstract: Thermosetting resin compositions of the present invention comprises a thermosetting resin and a specified class of cured polyorganosiloxane resins dispersed as extremely fine particles in the thermosetting resin. Moldings and other shaped articles prepared using these compositions are flexible and exhibit small coefficients of thermal expansion and low shrinkage during molding.Type: GrantFiled: March 24, 1986Date of Patent: May 5, 1987Assignee: Toray Silicone Co., Ltd.Inventors: Yoshitsugu Morita, Akihiko Shirahata
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Patent number: 4661559Abstract: Described herein is a composition which contains a specific group of hardeners, an epoxy resin and a thermoplastic polymer. When combined with a structural fiber the composition produces composites which have improved impact resistance, improved tensile properties and high compressive properties.Type: GrantFiled: January 10, 1985Date of Patent: April 28, 1987Assignee: Union Carbide CorporationInventors: Hugh C. Gardner, Michael J. Michno, Jr., George L. Brode, Robert J. Cotter
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Patent number: 4649179Abstract: A polyacetal resin composition comprises polyacetal and an ester of a fatty acid having 12 or more carbon atoms and a polyalkylene glycol having a polymerization degree of 16 or more and is improved in abrasion resistance, suitable for moulding.Type: GrantFiled: July 22, 1985Date of Patent: March 10, 1987Assignee: Polyplastics Co., Ltd.Inventor: Hitohisa Takagaki
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Patent number: 4647609Abstract: An antistatic polyacetal resin composition is provided with vastly improved wear properties by the inclusion of small amounts of a polydiorganosiloxane. The polyacetal resin composition is provided with an antistatic agent comprising a polyol fatty acid ester such as glyceryl monostearate and a glycol ether or ester such as polyethylene glycol.Type: GrantFiled: October 25, 1985Date of Patent: March 3, 1987Assignee: Celanese CorporationInventor: David P. O'Brien
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Patent number: 4622380Abstract: Alkylidene bromo-substituted arylene acetal and/or ketal polymers are useful for imparting fire resistance to compositions containing flammable polymers.Type: GrantFiled: June 20, 1985Date of Patent: November 11, 1986Assignee: PPG Industries, Inc.Inventor: Nicodemus E. Boyer
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Patent number: 4622381Abstract: A fiber composed of a polyester having at least a part of terminals blocked with the residue of at least one specific metal sulfonate compound, where the amount of the blocked terminals is 1.3 to 4.0 mol % based on the dicarboxylic acid component of the polyester and the alkali dissolution speed constant is 3.3.times.10.sup.-9 to 6.5.times.10.sup.-9 cm/sec. This polyester has a good dyeability with a cationic dye and is excellent in the heat resistance and alkali resistance. The polyester fiber can be spun at a high speed or super high speed and can be false-twisted at a high temperature.Type: GrantFiled: October 2, 1985Date of Patent: November 11, 1986Assignee: Teijin LimitedInventors: Togi Suzuki, Tadashi Konishi, Kohichi Iohara, Shinji Ohwaki, Setsuo Yamada
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Patent number: 4617143Abstract: The invention relates to a process for the production of doped heterocyclic polymers, wherein sulphur-free heteroaromatic compounds are reacted with arsenic pentafluoride, optionally in the gas phase or in an inert organic solvent, at temperatures of from -20.degree. C. to +80.degree. C. (or the boiling point of the solvent), and to the doped heterocyclic polymers obtained according to this process,as well as to doped products of polymers according to the following formula ##STR1## wherein X=O or S, andn an integer of >10,and a process for the production thereof.Type: GrantFiled: February 7, 1985Date of Patent: October 14, 1986Assignee: Bayer AktiengesellschaftInventors: Gerhard Kossmehl, Jurgen Hocker
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Patent number: 4608404Abstract: Described herein are compositions which contain a specific group of oligomeric diamine hardeners and epoxy compounds which when combined with structural fibers produce composites which have improved tensile properties, high compressive strengths, and improved impact resistance. These compositions also exhibit low moisture absorption.Type: GrantFiled: May 2, 1985Date of Patent: August 26, 1986Assignee: Union Carbide CorporationInventors: Hugh C. Gardner, George L. Brode, Robert J. Cotter
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Patent number: 4605441Abstract: An ink composition for indicating progress and completion of vulcanization of rubber articles comprising, per 100 parts by weight of the composition,(i) 0.01 to 10 parts by weight of at least one methine dye,(ii) 1 to 40 parts by weight of at least one member selected from the group consisting of rosin, rosin derivative, petroleum resin, phenol resin, xylene resin, alkyd resin, cumarone-indene resin, acrylic resin, epoxy resin, ketone resin and styrene-maleic acid resin,(iii) 0.5 to 50 parts by weight of at least one high molecular weight component selected from the group consisting of cellulose resin, polyvinyl butyral, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, polyamide, synthetic rubber and natural rubber,(iv) 30 to 80 parts by weight of at least one organic solvent capable of dissolving the components (ii) and (iii), and(v) 0.1 to 50 parts by weight of at least one halogenated organic acid.Type: GrantFiled: August 23, 1984Date of Patent: August 12, 1986Assignee: Sakura Color Products CorporationInventors: Yoshiaki Masuda, Hidetoshi Fukuo, Masaji Yamamoto
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Patent number: 4604448Abstract: A moulding composition which forms stable, durable mouldings which are color stable, have good water resistance and can be glass clear and fire-resistant, comprises a melamine-formaldehyde resole of mole ratio melamine:formaldehyde in the range 1:1.1 to 1:5.0, and from 20 to 80% by weight, based on the resole, of a glycol or glycol derivative. The composition may also contain one or more of water, polyvinyl alcohol, aluminium hydroxide and reinforcing fillers. The melamine in the resole may be partially replaced with urea. Cure of the resin composition, after shaping, takes place at a pH of at least 6.0, and is accelerated by boron oxide and also by microwave heating. Foamed products are especially useful.Type: GrantFiled: March 11, 1985Date of Patent: August 5, 1986Assignee: Polymer Tectonics, LimitedInventors: Robert Farkas, Lothar M. Hohmann
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Patent number: 4600767Abstract: Thermostable hydroxystyrylaza compounds are prepared by reacting methylated pyridines and/or pyrazines with one or more monohydroxy aromatic aldehydes having the ortho and para positions to the hydroxy group block with groups inert to condensation reactions. These compounds are useful to make unsaturated derivatives which can cure into high temperature resistant polymers and/or laminates without giving off condensation products.Type: GrantFiled: August 16, 1985Date of Patent: July 15, 1986Assignee: The Dow Chemical CompanyInventors: Tim R. Diephouse, Randy J. LaTulip, John W. Robinson, Gary R. Gantt
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Patent number: 4600750Abstract: An improved process is provided for producing polymeric acetal carboxylate salts useful as detergent builders. The process comprises polymerization of an alkyl glyoxylate, optionally with one or more comonomers; addition of stabilizing endgroups; and saponification of the polymeric ester to produce the polymeric acetal carboxylate salts. Active yield is improved by reducing the number of polymer chains with unstable temporary endcaps entering the saponification step.Type: GrantFiled: August 27, 1985Date of Patent: July 15, 1986Assignee: Monsanto CompanyInventors: David R. Dyroff, Edward J. Burke, William Vanderlinde, Thomas W. Backes
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Patent number: 4596853Abstract: Polymerizable solutions of mixtures containing a bicyclic amide acetal, a polymer which does not react with the bicyclic amide acetal and a monomer or polymer capable of undergoing condensation polymerization with the bicyclic amide acetal, a process for polymerization of such solutions and the novel polymers resulting from the polymerization are described.Type: GrantFiled: February 19, 1985Date of Patent: June 24, 1986Assignee: Ashland Oil, Inc.Inventors: Anil B. Goel, Peggy A. Blackburn
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Patent number: 4587033Abstract: Solid phase compositions having improved storage stability comprising polymeric acetal carboxylates in intimate admixture with a basic additive and a method of producing such admixtures are disclosed. The compositions are useful as builders in detergent formulations.Type: GrantFiled: July 2, 1984Date of Patent: May 6, 1986Assignee: Monsanto CompanyInventors: David R. Dyroff, Yueting Chou
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Patent number: 4564667Abstract: A solid urea-formaldehyde resin is provided, having a degree of condensation of 25% to 45%.A process for making the resin is also described and includes several steps. Urea and formaldehyde is first reacted with a molar ratio of U:F of 1:2.5 or more then concentrated. Further urea is added to reduce the ratio to the range 1:1.1 to 1:2 and further concentration is achieved without precipitation of solid resin by the use of a stabilization agent.Type: GrantFiled: February 22, 1985Date of Patent: January 14, 1986Assignee: BIP Chemicals LimitedInventor: David Taylor
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Patent number: 4542206Abstract: Solid state compositions having improved storage stability are provided by reacting an aqueous solution or slurry of polymeric acetal carboxylate and alkali metal hydroxide with carbon dioxide to form alkali metal carbonate in intimate admixture with the polymer and recovering the admixture in solid form. The compositions are useful as builders in detergent formulations.Type: GrantFiled: July 2, 1984Date of Patent: September 17, 1985Assignee: Monsanto CompanyInventor: David R. Dyroff
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Patent number: 4528333Abstract: Disclosed is an ungelled, curable, synthetic thermosetting resin, and a method of making the resin. The ungelled resin is a reaction product of components comprising: an aminoplast, a hydroxyl-containing carboxylic acid, an alkylenimine, and optionally a polyol. The disclosure is also directed to a coating composition comprising the ungelled, thermosetting resin.Type: GrantFiled: March 28, 1984Date of Patent: July 9, 1985Assignee: PPG Industries, Inc.Inventors: Wen-Hsuan Chang, Robert Piccirilli
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Patent number: 4526921Abstract: An acetal resin composition comprising an acetal resin and a low molecular weight polycarbonate compound having an intrinsic viscosity of 0.2 dl/g or less in methylene chloride at 25.degree. C. and, optionally, an organic or inorganic filler is disclosed. Said composition has improved surface gloss and weather resistance.Type: GrantFiled: March 5, 1984Date of Patent: July 2, 1985Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Masanori Sakurai, Junichi Miyawaki, Toshikazu Umemura, Akiyoshi Shibata
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Patent number: 4523007Abstract: A process for producing improved crosslinking components for paint binders which can be crosslinked through transesterification is described. The process is characterized in that an ester of malonic or cyano-acetic acid or aceto-acetic acid is reacted in a KNOEVENAGEL-reaction with a carbonyl compound, preferably with formaldehyde, and the reaction products are polymerized, optionally utilizing free-radical initiators, to provide a polymer having a molecular weight of between about 300 and 6000. The crosslinking components prepared according to the invention provide an unsaponifiable base structure and permit the preparation of products with high functionality. The crosslinking components are preferably utilized in binder systems for cathodically depositable paints.Type: GrantFiled: July 9, 1984Date of Patent: June 11, 1985Assignee: Vianova Kunstharz, A.G.Inventors: Rudolf Schipfer, Gerhard Schmolzer
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Patent number: 4513116Abstract: Continuous halogenation of polymers is achieved by contacting polymer and halogenating agent in a continuous flow device in which the reactants are present as either co-continuous phases or wherein the halogenating agent is present as a continuous phase and the polymer is present as a discontinuous phase, the polymer is subjected to deformation during reaction and in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture. In a preferred embodiment the polymer passes through three extruder-reactor zones under controlled conditions to achieve halogenation: feed, reaction (preferably vented), neutralization, and optionally a wash and exit zone. A continuous halogenating agent phase is achieved during reaction by avoiding complete filling of the reaction zone with polymer. Various halogenated polymers are produced, for example, halogenated linear low density polyethylene and halogenated butyl rubber.Type: GrantFiled: April 1, 1983Date of Patent: April 23, 1985Assignee: Exxon Research and Engineering Co.Inventors: Ronald C. Kowalski, William M. Davis, Neil F. Newman, Lewis Erwin
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Patent number: 4506053Abstract: An acetal resin composition comprising(A) an acetal resin,(B) at least one member selected from the group consisting of (1) a polyfunctional cyanic acid ester or its prepolymer, (2) a mixture of a polyfunctional cyanic acid ester or its prepolymer with a polyfunctional maleimide or its prepolymer and (3) a pre-copolymer of a polyfunctional cyanic acid ester and a polyfunctional maleimide,(C) an amine-substituted triazine and/or a cyanoguanidine compound, and(D) an inorganic filler other than glass, and/or an organic filler.Type: GrantFiled: December 7, 1983Date of Patent: March 19, 1985Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Masanori Sakurai, Junichi Miyawaki, Toshikazu Umemura, Toshikatsu Kawata, Shinzi Kiboshi, Akiyoshi Shibata
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Patent number: 4491653Abstract: Disclosed is a method for fluorinating the surface of a polymeric solid for improving a surface property of such solid while substantially maintaining the bulk physical properties of said solid. This method comprises contacting the polymeric solid with dilute fluorine gas at a temperature not substantially above about room temperature and at a pressure not substantially above about 1 atmosphere for a time adequate to partially fluorinate said solid surface by forming stable fluorocarbon groups wherein the ratio of --CF.sub.2 -- groups to --CHF-- groups is not substantially above about 1:1, the proportion of oxygen-providing groups presend during said fluorination being restricted to an amount whereby substantially no oxidation of said surface occurs.Type: GrantFiled: June 7, 1983Date of Patent: January 1, 1985Assignee: Battelle Development CorporationInventors: Vincent C. McGinniss, Francis A. Sliemers
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Patent number: 4472556Abstract: A method is disclosed for enhancing at least one of the mechanical properties of a partially crystalline thermoplastic by forming a dispersion of a polydiorganosiloxane within the thermoplastic, and extending the resultant dispersion. Ultimate tensile strength, modulus, and ultimate elongation can be enhanced in comparison with the same thermoplastic with no added polydiorganosiloxane and no extension.Type: GrantFiled: December 20, 1982Date of Patent: September 18, 1984Assignee: Dow Corning CorporationInventors: Jonathan Lipowitz, Robert E. Kalinowski
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Patent number: 4468504Abstract: The present invention provides a thermosetting, hardenable, flame-inhibiting and self-extinguishing resin mass based upon a conventional aminoplast or reaction resin and optionally containing a conventional cold or warm hardening system, wherein it contains melamine borate.Type: GrantFiled: October 13, 1983Date of Patent: August 28, 1984Assignee: August Krempel Soehne GmbH & Co.Inventor: Robert Kuemmel
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Patent number: 4458049Abstract: An aqueous solution of a resin glue comprising formaldehyde, urea, melamine and phenol is obtained when phenol, formaldehyde and not more than 0.35 mole of an alkali metal bisulfite per mole of phenol are reacted to give a phenol-formaldehyde condensate, formaldehyde and urea in a molar ratio of not more than 2.5 are reacted to give a urea-formaldehyde condensate, and the reaction products are in turn reacted with melamine and formaldehyde.Type: GrantFiled: June 30, 1982Date of Patent: July 3, 1984Assignee: BASF AktiengesellschaftInventors: Hans Diem, Robert Fritsch, Heinz Lehnert, Guenther Matthias, Hermann Schatz, Otto Wittmann
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Patent number: 4456737Abstract: A composition of matter useful as a high solids coating is disclosed. The composition comprises at least one bishydroxymethyl tricyclo compound and at least one amino crosslinking agent.Type: GrantFiled: April 12, 1983Date of Patent: June 26, 1984Assignee: Henkel CorporationInventor: Edward DiDomenico, Jr.
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Patent number: 4456747Abstract: A composition of matter useful as a high solids coating is disclosed. The composition contains at least one cycloaliphatic diol and at least one methylolamino curing agent.Type: GrantFiled: April 12, 1983Date of Patent: June 26, 1984Assignee: Henkel CorporationInventor: Edward DiDomenico, Jr.
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Patent number: 4451620Abstract: Diethanolammonium sulphamate is a curing agent for modified aminoplast resins.Type: GrantFiled: May 5, 1983Date of Patent: May 29, 1984Assignee: Cassella AktiengesellschaftInventors: Steffen Piesch, Peter Dorries
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Patent number: 4430494Abstract: Modified melamine-formaldehyde resins having a melamine:formaldehyde molar ratio of 1:(1.27 to 0.7) are prepared by heating melamine in an aqueous solution or suspension with formaldehyde in a melamine:formaldehyde molar ratio of 1:(1.27 to 0.7) at a pH value of 8 to 11 and at temperatures of 105.degree. to 160.degree. C. until the finished resin has reached a dilutability with water of 1:(0.1 to 4) at 20.degree. C., and, before, during or after the condensation reaction, adding less than 25% by weight of a glycol ether of the formulaR(OCH.sub.2 CH.sub.2).sub.n OHin which R denotes alkyl having 1 to 4 C atoms and n denotes an integer from 1 to 5, and/or of p-toluenesulfonamide. The resins are used in particular for the production of molding compositions.Type: GrantFiled: September 30, 1982Date of Patent: February 7, 1984Assignee: Cassella AktiengesellschaftInventors: Hans Honel, Walter Michel, Steffen Piesch, Karin Schluter, Alfons Wolf
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Patent number: 4418162Abstract: A method for the surface treatment of polyacetal resin characterized in that the resin is treated with an acidic solution containing chloride ions and sulfuric acid ions can activate the surface so that the shaped article can be easily plated.Type: GrantFiled: December 28, 1981Date of Patent: November 29, 1983Assignee: Polyplastics Co., Ltd.Inventors: Takuzo Kasuga, Yukio Ikenaga, Masami Yamawaki
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Patent number: 4413100Abstract: Methylated methylol melamine resin condensate compositions, represented by the empirical formula:MF.sub.3-4 Me.sub.0.5-3wherein M represents a melamine moiety, F represents a formaldehyde moiety, and Me represents a methyl group moiety, are combined with from about 5 percent to about 30 percent by weight of urea, based on the resin condensate solids content, to provide modified methylated methylol melamine resin condensate compositions which exhibit a reduced tendency to release formaldehyde into the atmosphere during curing of the textile materials treated therewith or during storage of the treated textile materials during storage at elevated temperatures.Type: GrantFiled: September 30, 1982Date of Patent: November 1, 1983Assignee: American Cyanamid CompanyInventor: William F. Herbes
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Patent number: 4403089Abstract: Polymers useful in compositions and methods for preventing the attachment of dental plaque to the surface of the teeth of mammals comprise alkali metal salts of certain carboxylated naphthalene formaldehyde polymers in a pharmaceutically acceptable vehicle and the periodic application thereof to teeth.Type: GrantFiled: August 17, 1982Date of Patent: September 6, 1983Assignee: Johnson & Johnson Products, Inc.Inventor: Carl J. Buck
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Patent number: 4386178Abstract: Polyacetal molding materials which contain, as a stabilizer, from 0.1 to 10% by weight of a melamine resin, the latter being a melamine-formaldehyde condensate, having a mean degree of polymerization of from 1.2 to 6.0 and a melamine:formaldehyde ratio of from 1:2 to 1:5.5, which has been partially etherified with a C.sub.1 -C.sub.4 -alkanol so that the ratio melamine:ether radicals is from 1:1.5 to 1:5.0 and the ratio melamine:free methylol groups is from 1:0.5 to 1:3. The molding materials can be converted to moldings which can be used industrially at elevated ambient temperatures.Type: GrantFiled: October 28, 1981Date of Patent: May 31, 1983Assignee: BASF AktiengesellschaftInventors: Wilhelm Schuette, Albrecht Hilt, Manfred Walter, Klaus Boehlke
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Patent number: 4380620Abstract: In a process for preparing polyoxymethylenes by polymerizing formaldehyde in the presence of an anionic polymerization catalyst, the use of a polyhydric alcohol having at least three alcoholic hydroxyl groups in the molecule permits the preparation of polyoxymethylenes which have desired molecular weights along with improved melt fluidity and which are excellent in processability.Type: GrantFiled: August 12, 1981Date of Patent: April 19, 1983Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kazuhiko Matsuzaki, Minoru Hamada, Hisaya Sakurai
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Patent number: 4377667Abstract: A polyacetal suitable for moldings which are excellent in lubricity, wear and antistatic properties, which has at least one terminal of its linear polymer molecule capped with an alkylene oxide adduct of an alcohol or a carboxylic acid, which adduct is of the formula ##STR1## wherein R.sub.o is a hydrogen atom, alkyl group, substituted alkyl group, aryl group, or substituted aryl group, R.sub.o 's may be the same or different, R.sub.1 is an alkyl group, substituted alkyl group, aryl group, or substituted aryl group, R.sub.2 is a hydrogen atom, alkyl group, substituted alkyl group, aryl group, or substituted aryl group, m is from 2 to 6, and n is from 1 to 1,000; the number average molecular weight of said polyacetal being in the range from 10,000 to 500,000 excluding the terminal group.Type: GrantFiled: June 4, 1981Date of Patent: March 22, 1983Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hisaya Sakurai, Minoru Hamada, Kazuhiko Matsuzaki
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Patent number: 4366305Abstract: In a process for producing a stabilized oxymethylene copolymer by heat-melting, at a temperature ranging between the melting point of the copolymer and a temperature 100.degree. C.Type: GrantFiled: November 17, 1981Date of Patent: December 28, 1982Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akira Amemiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura, Yoshihiro Ono, Isamu Masumoto, Noriyasu Nakao, Masanori Furukawa
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Patent number: 4366267Abstract: Aluminum perchlorate, cupric perchlorate and chromic perchlorate are used as catalysts for acid catalyzed curable resins.Type: GrantFiled: December 17, 1980Date of Patent: December 28, 1982Assignee: The Quaker Oats CompanyInventor: George S. Everett
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Patent number: 4360638Abstract: This invention is directed to compositions useful as ionomeric hot melt pressure sensitive adhesive compositions. These compositions comprise a polymer containing carboxylic acid, a miscible metal salt, and an o-methoxy-substituted aryl acid. These compositions display low melt viscosity, simplifyingapplication, as well as improved adhesive properties, especially shear resistance.Type: GrantFiled: January 13, 1982Date of Patent: November 23, 1982Assignee: Rohm and Haas CompanyInventor: Benjamin Bartman