Material Contains A Phosphorus Or Sulfur Atom Patents (Class 528/242)
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Patent number: 5194563Abstract: Linear aromatic polymeric species, particularly oligomers and polymers are produced under mild conditions in good yield by reacting an at least binuclear aromatic compound with an alkylidene bisphenol in the presence of a non C-alkylatable hydroxy substituted aromatic compound effective to stabilize a generated carbonium ion intermediate; the alkylidene bisphenol may be formed in situ from a ketone or aldehyde in the presence of a catalytic amount of a hydroxy substituted aromatic compound effective to generate a carbonium ion with the ketone or aldehyde; carrying out the reaction under reduced pressure, particularly high vacuum permits direct production of high polymers; the oligomers are useful in the manufacture of high molecular weight engineering or industrial plastics; the polymers may be used directly as such plastics.Type: GrantFiled: April 2, 1991Date of Patent: March 16, 1993Inventor: Allan S. Hay
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Patent number: 5171629Abstract: A carrier web of a sheet-like fiber material consisting of a glass fiber mat and a mat of synthetic fibers, which and are needled together and are end-consolidated with a polymer-free low-formaldehyde melamine-formaldehyde precondensate, and a process for its preparation are described.The carrier web is preferably end-consolidated with a melamine-formaldehyde precondensate which is partly etherified and/or sulfamate-modified.Type: GrantFiled: January 16, 1990Date of Patent: December 15, 1992Assignee: Hoechst AktiengesellschaftInventors: Peter Heidel, Wilhelm Adam
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Patent number: 5124417Abstract: Disclosed are novel compounds which are useful as initiators for cationically polymerizable monomers. The novel compounds comprise a carbon containing cation (e.g., trimethyloxonium) which is capable of initiating cationic polymerization and a non-nucleophilic counterion which is an at least partially fluorinated hydrocarbylsulfonato metallate (e.g. perfluoroethylsulfonato-aluminate). The disclosed initiators are capable of initiating the cationic polymerization of a wide variety of monomers such as epoxides, tetrahydrofuans, oxazolines, vinyls, lactones, and the like.Type: GrantFiled: September 3, 1991Date of Patent: June 23, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventor: Omar Farooq
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Patent number: 5081219Abstract: An open chain poly Reissert can be formed by the initial reaction of an aromatic dialdehyde (e.g., terephthaldicaboxaldehyde) and ammonia or a primary amine (e.g., methylamine) to form a reaction product which is then reacted with an aliphatic acid chloride (e.g., adipoyl chloride).Type: GrantFiled: October 3, 1990Date of Patent: January 14, 1992Assignee: Virginia Tech Intellectual Properties, Inc.Inventors: Harry W. Gibson, H. R. Jois Yajnanarayana
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Patent number: 5070161Abstract: Benzyl pyridinium or ammonium salts of a non-nucleophilic anion are useful as a cationic polymerization initiator having a heat latency. A variety of resinous compositions containing this initiator is also disclosed.Type: GrantFiled: May 25, 1989Date of Patent: December 3, 1991Assignee: Nippon Paint Co., Ltd.Inventors: Shinji Nakano, Hiroharu Ohsugi, Yasuhiko Nakae, Hisaki Tanabe, Ryozo Takagawa, Yoshio Eguchi, Koichi Tsutsui, Takeshi Endo
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Patent number: 5066768Abstract: According to the present invention, spherical melamine resin particulates having a uniform particle size and crosslinked structure can be prepared by adding an acid catalyst to an aqueous solution containing at least 0.5 to less than 5% by weight of a melamine derivative which is polymerizable in the acid region, to adjust the pH of the aqueous solution to at least 4 to less than 5, and carrying out heat-treatment of the aqueous solution.The spherical melamine resin particulates thus obtained are useful as additives for coating compositions, pigments and other materials.Type: GrantFiled: June 20, 1990Date of Patent: November 19, 1991Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Saburo Hiraoka, Kenji Niikawa
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Patent number: 5049645Abstract: A continuous preparation method of an amino resin particulate having a maximum particle size of 40 .mu.m or less and an average particle size of from 5 to 15 .mu.m is described. The method comprises the steps of reacting amino compounds with aldehydes in the presence of an acid catalyst in an aqueous solution to form a solid product and classifying said solid product in the form of a slurry with a combination of at least two grinders and at least two classifiers.Type: GrantFiled: March 12, 1990Date of Patent: September 17, 1991Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Muneo Nagaoka, Saburo Hayano
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Patent number: 5002699Abstract: Electrically conducting polymer complexes, prepared from N-substituted carbazoles, p-acetoxylbenzaldehyde, and protic acids, are soluble in polar organic solvents giving conductive polymer solutions processable to stable conductive films, coatings, and sponges.Type: GrantFiled: December 29, 1988Date of Patent: March 26, 1991Assignee: Honeywell Inc.Inventors: Samson A. Jenekhe, Stanley F. Lo
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Patent number: 4968773Abstract: Urea-formaldehyde resins which may be cured to give products having a low total extractable formaldehyde content are prepared by the following process:(i) an aqueous solution containing more than 50% formaldehyde and urea are mixed in a formaldehyde:urea molar ratio of 2-3:1 at pH 6-11,(ii) this mixture is heated to at least 80.degree. C.,(iii) a mineral or organic acid is added to bring the mixture to pH 0.5-3.5,(iv) the mixture is heated at a temperature between 80.degree. C. and the reflux temperature, preferably for 15 minutes to 1 hour,(v) keeping the temperature at or above 80.degree. C., a base is added to bring the mixture to pH 6.5-9 and(vi) urea is added to the mixture at a temperature up to 45.degree. C. until the formaldehyde:urea molar ratio is within the range 0.8-1.8:1.Type: GrantFiled: June 20, 1988Date of Patent: November 6, 1990Assignee: Dyno Industrier ASInventor: Ian R. Whiteside
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Patent number: 4968772Abstract: Urea-formaldehyde resins which may be cured to give products having a low total extractable formaldehyde content are prepared by the following process:(i) aqueous 30-50% formaldehyde and urea are mixed in a formaldehyde:urea molar ratio of 2-3:1 at pH 6-11,(ii) this mixture is heated to at least 50.degree. C., preferably to at least 80.degree. C.,(iii) a mineral or organic acid is added to bring the mixture to pH 0.5-3.5,(iv) the mixture is heated at a temperature between 80.degree. C. and the reflux temperature, preferably for 15 minutes to 1 hour,(v) keeping the temperature at or above 80.degree. C., a base is added to bring the mixture to pH 6.5-9 and(vi) urea is added until the formaldehyde:urea molar ratio is within the range 0.8-8:1.In a modification of the process, solid particulate resins are obtained by reacting the mixture from step (v) with urea at a pH below 7 to increase the viscosity thereof, adding a base until the mixture reaches a pH of 6.5-9 and dehydrating the resulting mixture.Type: GrantFiled: September 19, 1988Date of Patent: November 6, 1990Assignee: Dyno Industrier ASInventor: Ian R. Whiteside
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Patent number: 4956445Abstract: Acetal polymer having a high degree of polymerization is obtained using a catalyst of a heteropoly acid or an acid salt thereof in a small amount. The catalyst is represented by formula:H.sub.x [M.sub.m .multidot.M'.sub.n O.sub.l ]yH.sub.2 O (1)whereinM: a central element constituted of at least one member selected from among P, B, Si, Ge, Sn, As, Sb, U, Mn, Re, Cu, Ni, Ti, Co, Fe, Cr, Th and Ce,M': at least one ligand element selected from among W, Mo, V and Nb, m: 1 to 10, n: 6 to 40, l: 10 to 100, x: an integer of 1 or above, and y: 0 to 50.Type: GrantFiled: December 12, 1988Date of Patent: September 11, 1990Assignee: Polyplastics Co., Ltd.Inventors: Kaoru Yamamoto, Hiroyuki Sano, Shuichi Chino
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Patent number: 4954607Abstract: A ferromagnetic organic substance having a triaryl methane structure and a free radical concentration of methine carbon positions of at least 10.sup.17 radicals/g, preferably at least 10.sup.18 radials/g, is provided by polycondensing a condensed polynuclear aromatic compound or an electron donating group substituted monocyclic aromatic compound with an aromatic aldehyde in the presence of an acid catalyst, to produce a precondensate having a softening point between 30.degree. C. and 120.degree. C. and being soluble in various organic solvents, and subjecting the resulting precondensate to a dehydrogenation treatment and a purification treatment, followed by molding.Type: GrantFiled: August 15, 1989Date of Patent: September 4, 1990Assignee: Gunma UniversityInventors: Sugio Otani, Akira Kojima, Michiya Ota
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Patent number: 4929713Abstract: An open chain poly Reissert can be formed by the initial reaction of an aromatic dialdehyde (e.g., terephthaldicaboxaldehyde) and primary amine (e.g., methylamine) to form a reaction product which is then reacted with an aliphatic acid chloride (e.g., adipoyl chloride).Type: GrantFiled: October 6, 1989Date of Patent: May 29, 1990Assignee: Virginia Polytechnic Institute and State UniversityInventors: Harry W. Gibson, Yajnanarayana H. R. Jois
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Patent number: 4906727Abstract: Urea-aldehyde polycondensates usable as surface coating binders are obtainable by step-wise reaction of(a) urea and/or urea derivatives with acidic CH aldehydes in a molar ratio of urea:aldehyde of 1:2 in the presence of acids and at from 60.degree. to 120.degree. C. with(b) a mixture of 3 moles of formaldehyde per mole or urea and 3 moles of an acidic CH aldehyde per mole of urea at from 60.degree. to 120.degree. C. with subsequent removal of the water of reaction and treatment of the reaction mixture with an alkali metal alcoholate at from 80.degree. to 100.degree. C.Type: GrantFiled: December 9, 1987Date of Patent: March 6, 1990Assignee: Basf AktiengesellschaftInventors: Kurt Fischer, Harro Petersen, Hellmuth Kasch, Horst Schmidt
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Patent number: 4898908Abstract: Novel anionic polymeric hydrogels based on sulfonated amino aldehyde resins and a process for preparing such hydrogels are described. The hydrogels may include poly(N-vinyl 2-pyrrolidone) and other additives. Such hydrogels may be prepared by a four step process in which melamine and/or urea are reacted with formaldehyde, sulfonated, condensed to form a viscous gel and dried.Type: GrantFiled: January 26, 1989Date of Patent: February 6, 1990Assignee: Kuwait Institute for Scientific ResearchInventors: Shawqui Lahalih, George Hovakeemian
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Patent number: 4888412Abstract: A tanning assistant useful in particular for tanning in combination with aluminum tanning agents is obtained by condensing melamine with glyoxal and/or glyoxylic acid and optionally with an aromatic compound which has a phenolic hydroxyl group or optionally with a condensable nitrogen compound.Type: GrantFiled: July 28, 1988Date of Patent: December 19, 1989Assignee: BASF AktiengesellschaftInventors: Klaus Ebel, Wolfgang Reuther, Rolf Fikentscher, Dietrich Lach, Rolf Streicher, Ortwin Schaffer
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Patent number: 4847332Abstract: Cyclic formals, other than trioxane, form macromers with an olefinically unsaturated alcohol which functions as a propagating species to form a macromer of polyformal having a molecular weight generally less than about 10,000. A cationically ring-openable ether may be used to provide a polyether spacer in the alkenyl alcohol so that the macromer of polyformal formed contains a polyether block. Thus, the polyformal macromer may have a acryloyl, allyl, or styryl head group. Macromers of polyformal block copolymers are formed sequentially by first forming the block of first formal and then without isolating the macromer so formed, sequentially polymerizing a second formal monomer to form the second formal block. A macromer of randon copolymer may be formed with one or more cyclic formals or a cyclic ether. Macromers of random copolymers may also be formed with formaldehyde or trioxane.Type: GrantFiled: December 7, 1987Date of Patent: July 11, 1989Assignee: The B. F. Goodrich CompanyInventor: Simon H. Yu
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Patent number: 4841020Abstract: Novel copolymers and terpolymers are produced from carbon monoxide, a functionally-substituted ethylenically unsaturated compound wherein the functional substituent is separated from the ethylenic unsaturation by a divalent bridging group of at least one carbon, and optionally an ethylenically unsaturated hydrocarbon. The polymerization is conducted under polymerization conditions in the presence of a catalyst composition formed from a palladium compound, the anion of a non-hydrohalogenic acid having a pKa less than about 6 and a bidentate ligand of phosphorus or of nitrogen.Type: GrantFiled: September 21, 1987Date of Patent: June 20, 1989Assignee: Shell Oil CompanyInventor: Eit Drent
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Patent number: 4816553Abstract: Polyacetals obtainable by reaction of(a) a dialdehyde of the formulaOHC--A.sub.n --CHOwhereA=C.sub.1 -C.sub.4 -alkylene or ##STR1## and n is 0 or 1, is reacted with(b) a polycarboxylic acid of 5 to 7 carbon atoms which contains not less than 3 OH groups,in a molar ratio (a):(b) of 1:0.25 to 4 in an aqueous medium in the presence of an acid catalyst, are used as additives in washing agents and as complexing agents for heavy metal ions.Type: GrantFiled: February 17, 1988Date of Patent: March 28, 1989Assignee: BASF AktiengesellschaftInventors: Richard Baur, Rolf Fikentscher, Alfred Oftring, Felix Richter, Wolfgang Trieselt, Paul Diessel, Ekhard Winkler, Johannes Perner
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Patent number: 4778873Abstract: Condensation polymers of high molecular weight, such as polymers, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst system of the present invention condensation polymers can be synthesized at much lower temperatures. These catalyst systems are comprised of (1) a silicon-phosphorus composition which contains at least one divalent oxygen atom which is bonded directly to a tetravalent silicon atom and a trivalent or pentavalent phosphorus atom; and (2) at least one acid acceptor. For example, P(OSiR.sub.3).sub.3 wherein R can be an aliphatic or aromatic hydrocarbon radical, can be used in conjunction with a basic solvent as a catalyst system. Polymeric agents having pendant diphenylphosphine dichloride groups can also be used in conjunction with an acid acceptor as a catalyst system.Type: GrantFiled: May 4, 1987Date of Patent: October 18, 1988Assignee: The Goodyear Tire & Rubber CompanyInventor: Naoya Ogata
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Patent number: 4740579Abstract: A method of producing dihydroxy-terminated poly(2,2,3,3,4,4-hexafluoropene-1,5-diol formal) of a desired number average molecular weight by controlling the relative amounts of 1,3-dioxa-5,5,6,6,7,7-hexafluorocyclooctane monomer, 2,2,3,3,4,4-hexafluoropentane-1,5-diol, and the catalyst trifluoromethane sulfonic acid (having a determined activity) used to produce the polymer.Type: GrantFiled: May 5, 1987Date of Patent: April 26, 1988Assignee: The United States of America as represented by the Secretary of the NavyInventors: Judah M. Goldwasser, Horst G. Adolph
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Patent number: 4739032Abstract: Compositions comprising an oligomer which (a) comprises the repeating unit (AR - CHR), and where Ar is an aromatic group and R is hydrogen or a hydrocarbyl group of hydrogen, (b) has pendant and/or terminal groups which include inter alia acyloxymethyl, hydroxymethyl and carboxyl, and (c) has a functionality between 0.5 and 10, and processes for the preparation thereof are described. These compositions may be used in dental, electrical and electronic applications.Type: GrantFiled: March 30, 1987Date of Patent: April 19, 1988Assignee: Imperial Chemical Industries plcInventor: Michael E. B. Jones
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Patent number: 4694062Abstract: Electroactive organic polymeric materials of poly(heterocycle diyl methylenes) containing alternating heterocyclic conjugated segments of varying sizes and methylene or substituted methylenes in the main chain and random copolymers of such poly(heterocycle diyl methylenes) together with a method of making them are disclosed.Type: GrantFiled: September 8, 1986Date of Patent: September 15, 1987Assignee: Honeywell Inc.Inventors: Samson A. Jenekhe, Marcia K. Hansen
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Patent number: 4668762Abstract: Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst system of the present invention condensation polymers can be synthesized at much lower temperatures. These catalyst systems are comprised of (1) a silicon-phosphorus composition which contains at least one divalent oxygen atom which is bonded directly to a tetravalent silicon atom and a trivalent or pentavalent phosphorus atom; and (2) at least one acid acceptor. For example, P(OSiR.sub.3).sub.3 wherein R can be an aliphatic or aromatic hydrocarbon radical, can be used in conjunction with a basic solvent as a catalyst system. Polymeric agents having pendant diphenylphosphine dichloride groups can also be used in conjunction with an acid acceptor as a catalyst system.Type: GrantFiled: May 9, 1986Date of Patent: May 26, 1987Assignee: The Goodyear Tire & Rubber CompanyInventor: Naoya Ogata
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Patent number: 4642264Abstract: The object of the present invention are new thermoset resins having quickened curing, a process for their preparation, and their applications. The resins according to the invention consist, at least in part, of the products resulting from the polycondensation of one or more pyridine derivatives containing at least two methyl groups in the 2, 4 or 6 positions, with one or more aromatic dialdehydes, and the addition of one or more additives consisting of phenol compounds. These resins are used to the fabrication of composite materials.Type: GrantFiled: August 23, 1984Date of Patent: February 10, 1987Assignees: Societe Nationale des Poudres et Explosifs, Office National d'Etudes et de Recherches AerospatialesInventors: Marcel Ropars, Bertrand Bloch
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Patent number: 4631323Abstract: Method of making environmentally stable conductive organic polymers synthesized from carbazole or N-substituted carbazoles and benzaldehyde or substituted benzaldehydes doped with charge transfer acceptors is disclosed.Type: GrantFiled: July 29, 1985Date of Patent: December 23, 1986Assignee: Honeywell Inc.Inventor: Samson A. Jenekhe
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Patent number: 4590147Abstract: A polymerizable composition comprises a polymerizable olefinically unsaturated aromatic/aldehyde oligomer, a polymeric binder and a photoinitiator system. Such compositions may be used to prepare permanent dry film resists.Type: GrantFiled: November 23, 1984Date of Patent: May 20, 1986Assignee: Imperial Chemical Industries PLCInventor: Andrew A. Lindley
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Patent number: 4547565Abstract: A trioxane copolymer is manufactured by adding to trioxane and a co-monomer, 0.0001 to 2.0 percent by weight, based on the total weight of the monomers, of one or more sterically hindered phenols, then co-polymerizing the resultant mixture in the presence of a cation-active catalyst, and then treating the resultant copolymer by heating it at a temperature which is higher than the melting point of the copolymer to melt the copolymer and decompose and remove unstable parts of the copolymer.Type: GrantFiled: June 8, 1984Date of Patent: October 15, 1985Assignee: Polyplastics Company, Ltd.Inventors: Takuzo Kasuga, Takeshi Asano, Yukio Ikenaga, Masami Yamawaki, Yasuyuki Takeda, Koichi Ichimura
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Patent number: 4530992Abstract: Compositions comprising an oligomer which (a) comprises the repeating unit (Ar--CHR), and where Ar is an aromatic group and R is hydrogen or a hydrocarbyl group or hydrogen, (b) has pendant and/or terminal groups which include inter alia acyloxymethyl, hydroxymethyl and carboxyl, and (c) has a functionality between 0.5 and 10, and processes for the preparation thereof are described. These compositions may be used in dental, electrical and electronic applications.Type: GrantFiled: December 6, 1983Date of Patent: July 23, 1985Assignee: Imperial Chemical Industries PLCInventor: Michael E. B. Jones
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Patent number: 4525573Abstract: The object of the invention are new thermoset polymers and prepolymers, a process for their preparation, and their uses. The new thermoset prepolymers consist, at least in part, of the polycondensation products of one or more pyridine derivatives containing at least two activated methyl groups with one or more aromatic monoaldehydes containing at least one hydroxyl group. These prepolymers are used to prepare composite materials, in particular laminates, that can be used at high temperatures.Type: GrantFiled: August 24, 1984Date of Patent: June 25, 1985Assignees: Societe Nationale des Poudres et Explosifs, Office National d'Etudes et de Recherches AerospatialesInventors: Marcel Ropars, Bertrand Bloch
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Patent number: 4515935Abstract: Catalysts for foundry core binders prepared by reacting polyphosphoric acid with an alcohol.Type: GrantFiled: June 22, 1984Date of Patent: May 7, 1985Assignee: QO Chemicals, Inc.Inventor: George S. Everett
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Patent number: 4503215Abstract: A liquid formulation containing furfural, para toluene sulfonic acid and tetraethylene glycol is impregnated into fine grained, isotropic graphite bodies and then polymerized and pyrolyzed. That increases the density of the impregnated body and improves its surface finish.Type: GrantFiled: January 4, 1984Date of Patent: March 5, 1985Assignee: Union Oil Company of CaliforniaInventor: Edward E. Hucke
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Patent number: 4482698Abstract: A thermosetting coating composition containing an acid-curable amino resin and from 0,1 to 10 percent by weight of a blocked sulphonic acid, calculated on the weight of amino resin. The blocked acid used is an O-sulphonyl hydroxamic ester of the formula [RSO.sub.2 ONHCOO].sub.n A, wherein n represents an integer from 1 to 5 and R and A are organic groups.The new blocked acids are better soluble in the current solvents used in these coating compositions.The compositions may be used advantageously for coating a substrate by electrostatic spraying.Type: GrantFiled: August 8, 1983Date of Patent: November 13, 1984Assignee: Akzo N.V.Inventor: Johan B. Reesink
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Patent number: 4461720Abstract: A composition for treating wood to impart fire retardance prepared by converting dicyandiamide to an aqueous guanyl urea solution, methylolating the guanyl urea and introducing phosphoric acid to produce a phosphate salt of the methylolated guanyl urea.Type: GrantFiled: May 24, 1982Date of Patent: July 24, 1984Assignee: Hoover Treated Wood Products, Inc.Inventors: Andre G. Loyvet, Dennis J. Morgan
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Patent number: 4451640Abstract: Disclosed herein is a process for producing an aromatic sulfide polymer, comprising the step of reacting elementary sulfur, a polyhalogen-substituted aromatic compound, an aldehyde or a condensate thereof and a caustic alkali in an organic solvent.Type: GrantFiled: September 16, 1983Date of Patent: May 29, 1984Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Zenya Shiiki, Yukichika Kawakami
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Patent number: 4433133Abstract: Disclosed is a process for producing fine particles of crosslinked urea-formaldehyde polymer which comprises the steps of synthesizing a precondensate of urea and formaldehyde, allowing the precondensate to react by the addition of an aqueous solution of an acid catalyst, and then neutralizing the reaction mixture, characterized in that the filtrate obtained in the filtration step for separating the polymer particles is recycled to the reaction system at the step of synthesizing a precondensate of urea and formaldehyde and/or the step of allowing the precondensate to react by the addition of an aqueous solution of an acid catalyst and in that the precondensate is obtained by reaction 1 mole of urea with 1.4 to 1.9 moles of formaldehyde at a pH of 6 to 10 and a temperature of 10 to 95.degree. C.Type: GrantFiled: March 28, 1983Date of Patent: February 21, 1984Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Naoyuki Ifuku, Akio Kurokawa, Kenzo Seita, Kaoru Usami, Naoyuki Aikawa
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Patent number: 4410685Abstract: A process for preparing a urea-formaldehyde base resin having a F/U molar ratio of 1.0:1-1.2:1, that is hydrolytically stable, which comprises adjusting a formaldehyde solution to a pH of 0.5-2.5, slowly charging urea to said formaldehyde solution while maintaining the temperature at 40.degree.-70.degree. C., neutralizing the reaction mixture after obtaining a Gardner viscosity in the range of T+-V+, then adding the final charge of urea and permitting equilibration.Type: GrantFiled: September 10, 1982Date of Patent: October 18, 1983Assignee: Borden, Inc.Inventor: James H. Williams
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Patent number: 4403993Abstract: Water-soluble or self-dispersing resin tanning agents are prepared by heating from 5 to 30% by weight of melamine, from 15 to 45% by weight of urea, from 20 to 35% by weight (calculated as anhydrous material) of formaldehyde and from 15 to 55% by weight of sodium bisulfite or of a corresponding amount of some other salt of sulfurous acid for from two to twelve hours in aqueous solution at 40.degree.-120.degree. C. and a pH of from 5 to 9.Type: GrantFiled: April 9, 1982Date of Patent: September 13, 1983Assignee: BASF AktiengesellschaftInventors: Dietrich Lach, Rolf Streicher, Gerhard Bolz
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Patent number: 4399272Abstract: A process for producing a polyacetal copolymer, which comprises copolymerizing formaldehyde and a compound selected from the group consisting of alkylene oxides, poly(alkylene oxides), cyclic formals and poly (cyclic formals) in the presence of a Lewis acid and an anionic polymerization catalyst with the exception of metal chelate compounds.Type: GrantFiled: November 4, 1980Date of Patent: August 16, 1983Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hisaya Sakurai, Minoru Hamada, Kazuhiko Matsuzaki, Muneaki Aminaka
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Patent number: 4398014Abstract: New aromatic sulfonylsulfoxonium salts are of formula ##STR1## where q is 1 to 4,R denotes an aliphatic, cycloaliphatic, or aromatic group,R.sup.6 denotes H, an alkyl or aralkyl group, or a group --COR.sup.9, --CO--NH--(CO).sub.r --R.sup.10, or --SO.sub.2 --R.sup.11, where r is zero or 1,one, but not both, of R and R.sup.6 denoting an aromatic group,R.sup.7 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, or aralkyl group,R.sup.8 has the same meaning as R.sup.7 but may alternatively represent a dialkylamino group or, if R.sup.7 denotes alkyl, it may alternatively represent an arylamino group,R.sup.9, R.sup.10, and R.sup.11 each denote an alkyl, aryl, or aralkyl radical of 1 to 25 carbon atoms,t is 1, 2, or 3, andZ.sup.- denotes a t-valent anion of a protic acid.The salts, e.g., dimethyl-p-toluenesulfonylmethylsufoxonium hexafluorophosphate, are useful as catalysts for the polymerization of cationically polymerizable materials by means of actinic radiation and/or heat.Type: GrantFiled: October 23, 1981Date of Patent: August 9, 1983Assignee: Ciba-Geigy CorporationInventors: George E. Green, Edward Irving, Bernard P. Stark
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Patent number: 4387222Abstract: Acidic cyclic perfluoroaliphaticdisulfonimides, salts thereof, a process for making the same, curable compositions containing acidic cyclic perfluoroaliphaticdisulfonimides or salts thereof and cationically-sensitive monomers, and a process for using acidic cyclic perfluoroaliphaticdisulfonimides and salts thereof as catalysts for the cure of cationically-sensitive monomers.Type: GrantFiled: January 30, 1981Date of Patent: June 7, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4382130Abstract: Certain aryloxyphosphonium salts have been found to be effective as curing agents for various cationically polymerizable organic materials, such as epoxy resins, when incorporated into such materials. The materials are found to be moisture curable coating compositions.Type: GrantFiled: October 14, 1981Date of Patent: May 3, 1983Assignee: General Electric CompanyInventors: Robert H. Ellison, Martin A. Byrne
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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: 4374953Abstract: Polyacetals and polyketals are prepared by reacting emulsified carbonyl compounds with emulsified polyfunctional alcohols in aqueous media and in the presence of specified polycondensation catalysts. Coherent films of the resultant polymers can be applied to substrates from aqueous or non-aqueous media.Type: GrantFiled: April 19, 1982Date of Patent: February 22, 1983Assignee: Dow Corning CorporationInventors: Yungnien J. Chou, John C. Saam
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Patent number: 4374241Abstract: Nitropolyformals of the formula H--OCH.sub.2 C(NO.sub.2).sub.2 ZC(NO.sub.sub.2 CH.sub.2 OCH.sub.2 --OCH.sub.2 C(NO.sub.2).sub.2 ZC(NO.sub.2).sub.2 CH.sub.2 OH wherein Z is --CH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 OCH.sub.2 --, or --CH.sub.2 NHCH.sub.2 -- and wherein the average molecular weight of the nitropolyformal molecules is from about 1,000 to about 50,000. The nitropolyformals are prepared by reacting a diol of the formula HOCH.sub.2 C(NO.sub.2).sub.2 ZC(NO.sub.2).sub.2 CH.sub.2 OH, wherein Z is defined as above, with formaldehyde in the presence of concentrated sulfuric acid. These polymers are useful as energetic binders in explosives and propellants.Type: GrantFiled: January 29, 1982Date of Patent: February 15, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventor: Horst G. Adolph
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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: 4352922Abstract: According to the present invention, there is provided an improved method of producing a poly-(amide-imide) resin comprising the steps of:(1) reacting a phenanthrene with formaldehyde or a formaldehyde donor in the presence of an acid catalyst to give a phenanthreneformaldehyde reaction product having substantially only methylene bridges;(2) removing from the reaction product unreacted phenanthrene;(3) treating the reaction product with formaldehyde or a formaldehyde donor in the presence of an acid catalyst to give a high molecular weight product having substantially only methylene bridges;(4) oxidizing the high molecular weight product to break the 9, 10 bond in the phenanthrene moieties to produce a polycarboxylated reaction product;(5) reacting the polycarboxylated reaction product with an aromatic diamine to produce a poly-(amide-imide) resin.Type: GrantFiled: March 3, 1981Date of Patent: October 5, 1982Assignee: Coal Industry (Patents) LimitedInventors: Joseph G. Robinson, Angela M. Carswell, David I. Barnes
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Patent number: 4351935Abstract: A thermosetting coating composition contains an acid-curable amino resin and from 0.1 to 10 percent by weight of a blocked sulphonic acid calculated on the weight of amino resin. In order to reduce the electric conductivity of the composition after a prolonged pot-life, a sulphonic acid oximate is used as the blocked acid.The compositions are advantageous for coating a substrate by electrostatic spraying.Type: GrantFiled: July 14, 1981Date of Patent: September 28, 1982Assignee: Akzo N.V.Inventors: Johan B. Reesink, Hendrik J. Hageman, Ulfert E. Wiersum
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Patent number: 4339569Abstract: In a process for producing an oxymethylene homopolymer or copolymer having improved stability which comprises polymerizing trioxane or a mixture of trioxane and a cyclic ether and/or a cyclic acetal in bulk in the presence of a catalyst which is at least one compound selected from the group consisting of boron trifluoride, boron trifluoride hydrate and coordination compounds of boron trifluoride with organic compounds containing an oxygen or sulfur atom, the improvement which comprises performing the bulk polymerization without destroying the bulk polymerization system, or which comprises adding a tertiary phosphine compound to the polymerization system to deactivate the catalyst, before the polymerization system formed by the bulk polymerization is destroyed.Type: GrantFiled: May 19, 1980Date of Patent: July 13, 1982Assignee: Mitsubishi Gas Chemical Co., Inc.Inventors: Akitoshi Sugio, Akira Amemiya, Tadashi Kunii, Tomotaka Furusawa, Mutsuhiko Takeda, Katsumasa Tanaka, Toshikazu Umemura
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Patent number: 4339567Abstract: Substances (I) capable of being converted into higher-molecular weight materials under the influence of a cationic catalyst, such as 1,2-epoxides, aminoplasts, vinyl monomers or prepolymers, or phenoplasts, are so converted by exposure to actinic radiation in the presence of a sulphoxonium salt (II) of formula ##STR1## where P denotes zero or 1,R.sup.6 denotes an arylene or aralkylene group,R.sup.7 denotes --H or a group of formula ##STR2## R.sup.8 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl group,R.sup.9 has the same meaning as R.sup.8 but may alternatively represent a dialkylamino group or, if R.sup.8 represents an alkyl group, R.sup.9 may represent an arylamino group,R.sup.10 and R.sup.11 each independently have the same meaning as R.sup.8 but may also each denote --H,r represents 1, 2, or 3,Z.sup.r- denotes an r-valent anion of a protic acid, and q denotes zero when p denotes zero, or zero or 1 when p denotes 1.Type: GrantFiled: February 23, 1981Date of Patent: July 13, 1982Assignee: Ciba-Geigy CorporationInventors: George E. Green, Edward Irving