From Aldehyde Or Derivative Reactant Patents (Class 524/593)
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Patent number: 6472466Abstract: The present invention describes the preparation of multifunctional imine-esters and their application as novel crosslinkers for surface coatings. The imine-esters are prepared by reacting a di- or tri-aldehyde with an &agr;-aminoester such as glycine ethyl ester hydrochloride. These novel crosslinkers may then be formulated with polyesters containing maleic anhydride residues to give enamel coating formulations. The enamels may be cured by a 1,3-dipolar cycloaddition mechanism to give carbon-carbon bonds and cyclic structure. Coatings thus prepared have advantages of low toxicity, no formaldehyde evolution, and improved performance.Type: GrantFiled: June 22, 2001Date of Patent: October 29, 2002Assignee: Eastman Chemical CompanyInventors: Thauming Kuo, Jeffery Earl Grant Powell
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Patent number: 6455631Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula wherein the terminal, modified hydrazide groups are present in an amount of 1 to 25% by weight [calculated as C(O)—NH—NH—C(O), MW 84], based on the weight of the polyurethanes, and wherein X represents OR′ or NHR′, R represents the residue obtained by removing the isocyanate groups from an NCO prepolymer, R′ represents a group which is inert to Isocyanate groups under the conditions used to form the polyurethane of in formula I, R″ represents a divalent, linear or branched aliphatic group containing 2 to 10 carbon atoms, provided that there are at least two carbons between the oxygen atoms, wherein the aliphatic group may optionally be substituted by heteroatoms to form ether or ester groups, m is 0 or 1 and n is 2 to 4.Type: GrantFiled: December 1, 2000Date of Patent: September 24, 2002Assignees: Bayer Corporation, Bayer AktiengesellschaftInventors: Harald Blum, Lyubov K. Gindin, Karen M. Henderson, Patricia B. Jacobs, Sze-Ming Lee, Brian Long, Robert A. Sylvester, Douglas A. Wicks
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Publication number: 20020103292Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula 1Type: ApplicationFiled: December 1, 2000Publication date: August 1, 2002Inventors: Harald Blum, Lyubov K. Gindin, Karen M. Henderson, Patricia B. Jacobs, Sze-Ming Lee, Brian Long, Robert A. Sylvester, Douglas A. Wicks
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Patent number: 6399699Abstract: A polyacetal resin composition which comprises about 100 parts by weight of a polyacetal having a residual fluorine concentration of not more than about 13 ppm and a concentration of formaldehyde generated when the polyacetal is heated at about 230° C. for about 30 minutes in nitrogen of not more than about 500 ppm; from about 0.01 to about 3 parts by weight of an antioxidant; and from about 0.001 to about 5 parts by weight of a basic substance. The above polyacetal resin composition is excellent in long-term thermal aging resistance under high-temperature circumstances.Type: GrantFiled: February 12, 1997Date of Patent: June 4, 2002Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Yukio Tanigawa, Tadashige Hata
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Patent number: 6369132Abstract: Fine particulate thermoplastic polymers [e.g., hydrophobically modified polyether-polyurethanes, polyacrylates, polyvinyl alcohol, polyether-polyols, polyacrylamide, aminoplast-polyethers and poly(acetal- or ketal-polyethers] having reduced bulk density, process of making same by dissolving the polymer and rapidly insolubilizing the polymer from the solution and process of using aqueous suspensions of such polymers as thickeners for aqueous systems.Type: GrantFiled: October 17, 1997Date of Patent: April 9, 2002Assignee: Hercules IncorporatedInventor: Arjun Chandra Sau
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Patent number: 6258884Abstract: Polymeric compositions characterized by containing polymeric acetals and zinc-containing inorganic fillers exhibiting improved resistance to the formation and adhesion of mineral deposits when used in applications wherein the composition is exposed to water containing dissolved minerals for extended periods of time. The composition may be prepared into shaped articles which are useful as mineral resistant, plumbing fixtures.Type: GrantFiled: March 23, 1993Date of Patent: July 10, 2001Assignee: Hoechst Celanese CorporationInventor: Bruce Mulholland
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Patent number: 6245140Abstract: A surface-fluorinated metal oxide particulate comprising a metal oxide particulate selected from titanium, aluminum, silicon, silver, copper, zirconium, zinc, tin, germanium, tantalum and the like, being reacted with fluorine and a process for manufacturing such surface-treated metal oxide particulates are disclosed. The process allows easy and efficient fluorination of the surface of metal oxide particulates in any desired ratio. The surface-fluorinated metal oxide particulates of the present invention are useful as an additive for weatherable paints, weatherable resins, cosmetics and the like.Type: GrantFiled: December 19, 1997Date of Patent: June 12, 2001Assignee: Showa Denko K.K.Inventors: Ryuji Monden, Chozo Inoue, Jun Tanaka, Hiroyuki Hagihara, Hiroyasu Taguchi, Hiroyuki Takahashi, Manabu Ohira, Katsura Ito
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Patent number: 6245853Abstract: A one-step, in-situ, process for producing a high solids content emulsion or dispersion of partially or totally crosslinked urea formaldehyde or melamine formaldehyde resin droplets or particles, by forming a reaction mixture of (i) aqueous formaldehyde (formalin), (ii) at least one water-soluble protective colloid, (iii) water and (iv) optionally a surfactant, and mixing the reaction mixture in a reaction vessel; optionally adjusting the initial pH of the reaction mixture according to a desired value as needed; adding (a) urea, substituted urea, or a mixture thereof, or (b) melamine, substituted melamine, or a mixture thereof, to the reaction mixture; and heating the reaction mixture to a temperature at which condensation takes place between the (a) urea, substituted urea, or the mixture thereof, or (b) melamine substituted melamine, or the mixture thereof, and the formaldehyde to form a urea formaldehyde or melamine formaldehyde resin, and holding the reaction mixture at that temperature or a higher temperaType: GrantFiled: May 16, 2000Date of Patent: June 12, 2001Assignee: Neste Resins CanadaInventors: Kwok Tang, Guomin Bian, Leena Matilainen, Sinikka Ingelin
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Patent number: 6235826Abstract: Coating agent for producing an electric insulating coating on an electro steel sheet with good punching quality, weldability, annealing stability and high insulation resistance. Said agent comprises a metal organic and an organic film-forming agent and, optionally, chemically inert inorganic pigments and/or filler and other common additives such as antifoaming agents, leveling agents, catalyzers and the like.Type: GrantFiled: May 27, 1999Date of Patent: May 22, 2001Assignee: Herberts Austria GmbHInventor: Michael Wimmer
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Patent number: 6214940Abstract: A polyacetal resin composition comprising a polyacetal resin and a polycarbodiimide compound. The polyacetal resin composition is free from the problems of conventional polyacetal resins and has good water resistance at high temperatures.Type: GrantFiled: June 25, 1999Date of Patent: April 10, 2001Assignee: Nisshinbo Industries, Inc.Inventors: Yasuo Imashiro, Naofumi Horie
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Patent number: 6156834Abstract: The present invention provides a polyacetal resin composition improved, when molded, in environmental stress cracking resistance and in the physical properties of the weld portion. Environmental stress cracking resistance and physical properties of the weld portion before a heat aging resistance test can be improved by adding, to 100 parts by weight of a polyacetal resin, 0.001 to 1.0 part by weight of a difatty acid alkaline earth metal salt produced using two or more kinds of fatty acid and an alkaline earth metal. Also, the physical properties of the weld portion after a heat aging resistance test can be improved by further adding particular fatty acid ester compounds.Type: GrantFiled: March 17, 1999Date of Patent: December 5, 2000Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Toshiharu Seyama, Mikio Oka, Makoto Doki
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Patent number: 6080808Abstract: The molding composition contains, in a flowable binder, from 20 to 50% by vol., based on the total volume of the molding composition, of a powder comprising one or more metal oxides and, if desired, metal carbides and/or metal nitrides which cannot be reduced using hydrogen, where at least 65% by vol. of the powder has a maximum particle size of 0.5 .mu.m and the remainder of the powder has a maximum particle size of 1 .mu.m, and at least 90% by vol. of the powder comprises metal oxides which can be reduced using hydrogen. The metal oxides which can be reduced using hydrogen are Fe.sub.2 O.sub.3, FeO, Fe.sub.3 O.sub.4, NiO, CoO, Co.sub.3 O.sub.4, CuO, Cu.sub.2 O, Ag.sub.2 O, Bi.sub.2 O.sub.3, WO.sub.3, MoO.sub.3, SnO, SnO.sub.2, CdO, PbO, Pb.sub.3 O.sub.4, PbO.sub.2 or Cr.sub.2 O.sub.3, or mixtures thereof.Type: GrantFiled: January 5, 1998Date of Patent: June 27, 2000Assignee: BASF AktiengesellschaftInventor: Hans-Josef Sterzel
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Patent number: 6077883Abstract: The present invention relates to a glass fiber binding composition having an effective binding amount of a furan resin, an effective emulsifying amount of an emulsifier agent, and sufficient amount of water to result in a binding composition having from 0.5 to 80% N.V. The invention further pertains to a process of binding glass fibers at junctions of the fibers comprising the steps of providing glass fibers, applying an effect binding amount of an emulsified glass fiber binding composition to the junctions of the glass fibers, and curing the binder at the junctions of the glass fibers. Finally, the invention also discloses a glass fiber composition comprising a plurality of glass fibers having a plurality of junctions where two or more fibers meet, and an effective binding amount of an emulsified glass fiber binding composition applied to a portion of the junctions of the glass fibers.Type: GrantFiled: January 6, 1995Date of Patent: June 20, 2000Assignees: Johns Manville International, Inc., QO Chemicals, Inc.Inventors: Thomas John Taylor, William Henry Kielmeyer, Carlo Martin Golino, Carl A. Rude
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Patent number: 6075083Abstract: There is provided a mouldable composition for use in manufacturing a sintered metal or ceramic object, the composition comprising a metal or ceramic powder, a cross-linkable thermoplastic polymer and an amount of a cross-linking agent effective to cross-link the thermoplastic polymer at an elevated temperature. There is also provided a process for manufacturing a sintered metal or ceramic object using such a mouldable composition.Type: GrantFiled: March 9, 1998Date of Patent: June 13, 2000Assignee: Ceramet Technologies PTE. Ltd.Inventor: Dunstan Haridra Peiris
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Patent number: 6051660Abstract: A polyacetal resin molded article excellent in thermal aging resistance and surface appearance of molded article in which an amino-substituted triazine compound is dispersed in the form of particles having an average particle size of not more than 1 .mu.m in a polyacetal resin, which molded article is obtained by melt-kneading a polyacetal resin having a formaldehyde content of 1,000 to 3,000 with an amino-substituted triazine compound for a time of 250 seconds or less.Type: GrantFiled: February 12, 1998Date of Patent: April 18, 2000Assignee: Asahikasei Kogyo Kabushiki KaishaInventor: Mikio Oka
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Patent number: 6046252Abstract: A binder composition of a phenolic novolac resin and a (lower) alkoxylated triazine-formaldehyde resin curing agent is disclosed. The triazine resins have sufficient carbon atoms in the alkoxy groups so as to provide a curing agent having a water solubility of less than 15%. The binder cures at high temperatures so as to provide improved flow and prolonged workability to the composition. The compositions are useful in refractory applications having a need for high temperature curing agents such as for maintenance and repair within refractory vessels by gunning/spraying, manufacture of electrodes by the Soderberg method, and for use in blast furnace tap holes.Type: GrantFiled: February 25, 1997Date of Patent: April 4, 2000Assignee: Borden Chemical, Inc.Inventor: Arthur H. Gerber
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Patent number: 6015846Abstract: Particulate refractory aggregate containing elutable alkali is treated with a particulate active clay having a particle size of less than 0.5 mm in order to reduce the level of the elutable alkali. Sand recovered from spent foundry moulds and cores produced from alkaline binders can be treated to reduce its elutable alkali content and then recycled for further foundry use.Type: GrantFiled: December 29, 1995Date of Patent: January 18, 2000Assignee: Borden France S.A.Inventors: Philippe Marie Toussaint, Patrick Robert Queval, Johannes-Adolf-Jacobus Geraedts, Jacques Andre Caumont
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Patent number: 6013723Abstract: Injection molding is performed by using a thermoplastic resin composition including a thermoplastic resin of 30 wt. % or more, a lubricant and an antioxidant. The thermoplastic resin is polymerized with a single-sight catalyst and has molecular-weight distribution of 1.1-5.0. The thermoplastic resin polymerized by using the single-sight catalyst is used for an injection molded article so that the injection molded article is superior in physical strength and blocking proofness. By adding the lubricant and the antioxidant to the thermoplastic resin composition, lubricity and antioxidant thereof may be improved.Type: GrantFiled: December 2, 1997Date of Patent: January 11, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Mutsuo Akao
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Patent number: 5985987Abstract: The invention relates to colorants (colorant pastes) used for the tinting of paint products.Type: GrantFiled: June 17, 1998Date of Patent: November 16, 1999Assignee: Tikkurila Cps OyInventors: Maj-Len Carita Adolfsson, Arja Kaarina Saloranta, Maria Katarina Silander, Seija Anneli Varila, Martti Vilhelm Wikstedt
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Patent number: 5977253Abstract: Disclosed is a resol phenolic thermosetting resin made by preparing a composition of formaldehyde and a phenol in a molar ratio of about 1:1 to about 3:1, about 1 to about 20 wt %, based on the weight of said composition, of a phenol-formaldehyde polymerization catalyst, and about 0.5 to about 10 wt %, based on the weight of said phenol, of a polyvinyl alcoholic compound. The phenol can be benzophenol, an alkyl from C.sub.1 to C.sub.12 phenol, a bisphenol, or a mixture thereof. The bisphenol can be bisphenol A, bisphenol F, or bisphenol S. The polyvinyl alcoholic compound can be polyvinyl alcohol, polyvinyl acetate, an acetal derived from polyvinyl alcohol, or a mixture thereof. The composition is heated at about 50 to about 120.degree. C. to form the resin.Type: GrantFiled: March 2, 1998Date of Patent: November 2, 1999Assignee: Occidental Chemical CorporationInventor: Michelle Warakomski
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Patent number: 5969020Abstract: Highly uniform microporous foam suitable for medical applications and methods for preparing these foams. The highly uniform microporous foams are of controlled pore size that may be utilized in a variety of applications. In preparing the foams, an organic crystalline polymer is melted and combined with a selected solid crystalline fugitive compound to produce a substantially isotropic solution. The solution is cooled under controlled conditions, which foster solid-solid phase separation by the simultaneous crystallization of the fugitive compound and the polymer, to produce a foam precursor containing the solidified fugitive compound dispersed through a matrix of the organic polymer. Crystals of fugitive compound are then removed by solvent extraction and/or sublimation, or like process to produce microcellular foams having a continuous, open-cell structure.Type: GrantFiled: February 6, 1998Date of Patent: October 19, 1999Assignee: Poly-Med, Inc.Inventors: Shalaby W. Shalaby, Susan L. Roweton
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Patent number: 5969001Abstract: A friction material for a synchronizer ring which exhibits good heat resistance, wear resistance and scorching resistance properties has 30 to 70% by weight of a carbon material, 10 to 40% by weight of a thermosetting resin, 5 to 30% by weight of metal fibers or metal particles and 5 to 40% by weight of inorganic fibers or inorganic particles, and having a porosity of 10 to 50%. The carbon is porous graphite particles of a size distribution in which not less than 50% of the entire number of said graphite particles have a particle diameter from 44 to 250 .mu.m. The thermosetting resin is a novolac type phenol resin, epoxy modified phenol resin, melamine modified phenol resin, cashew modified phenol resin, hydrocarbon resin modified phenol resin or cresol modified phenol resin.Type: GrantFiled: September 9, 1996Date of Patent: October 19, 1999Assignee: Dynax CorporationInventor: Satoshi Kawai
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Patent number: 5948841Abstract: A process for producing a stabilized oxymethylene copolymer, which comprises subjecting a crude oxymethylene copolymer to terminal stabilization in an extruder (A) having a terminal-stabilizing zone and a vacuum zone for volatile components removal to obtain a terminal-stabilized oxymethylene copolymer, separately melt-kneading a polyoxymethylene and a stabilizer and/or an additive in other extruder (B), feeding the resulting melt-kneading mixture in a molten state into a section of the extruder (A) following the vacuum zone for volatile components removal so that the proportions of the polyoxymethylene to be fed from the extruder (B) and the crude oxymethylene copolymer to be subjected to terminal stabilization in the extruder (A) become 1:3 to 1:45 by weight ratio, and kneading the polyoxymethylene, the stabilizer and/or the additive and the terminal-stabilized oxymethylene copolymer.Type: GrantFiled: July 29, 1997Date of Patent: September 7, 1999Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventor: Hideki Nakamura
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Patent number: 5939481Abstract: A polyoxymethylene composition is reduced in mold fouling, undergoes little discoloration in molten-state residence within the cylinder of a molding machine, has improved moldability, and is reduced in formic acid generation, when compounded with a sterically hindered phenolic antioxidant (a), of a polyamide (b), at least one metal compound selected among oxides and carbonates of magnesium or calcium (c) and a boron compound (d).Type: GrantFiled: June 18, 1997Date of Patent: August 17, 1999Assignee: Polyplastics Co., Ltd.Inventors: Noriyuki Sugiyama, Hiroyuki Hase
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Patent number: 5891983Abstract: Water-soluble formaldehyde-free polycondensation products based on amino-s-triazines with at least two amino groups and glyoxylic acid, which contain as further component at least one amino compound and where the molar ratio of amino-s-triazine to glyoxylic acid to amino compound is 1:0.5 to 6.0:0.1 to 2.0. These polycondensation products are excellently suited as additives for aqueous suspensions of inorganic binders, especially cement, lime and gypsum. Building material mixtures which contain these polycondensation products remain workable for a considerably longer time and, in spite of this, also set more quickly.Type: GrantFiled: July 9, 1997Date of Patent: April 6, 1999Assignee: SKW Trostberg AktiengesellschaftInventors: Gerhard Albrecht, Manfred Schuhbeck, Christian Huber, Josef Weichmann, Alfred Kern
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Patent number: 5856375Abstract: Broadly, the present invention relates to furan no-bake foundry binders where bisphenol A tar (BPAT) is used to replace a portion of the furfuryl alcohol and any conventional filler optionally included in for binder formulation. Reduction in the amount of furfuryl alcohol in the foundry binder formulation may lead to a reduction in the cost and an improvement in early strength of these formulations. Accordingly, in a furan no-bake foundry binder of a resin derived from a major proportion of furfuryl alcohol and optionally fillers, the improvement which comprises at least a fraction of said furfuryl alcohol being bisphenol A tar. Bisphenol A tar also can replace at least a fraction of any filler included in the binder formulation.Type: GrantFiled: January 4, 1996Date of Patent: January 5, 1999Assignee: Ashland, Inc.Inventors: Ken K. Chang, Michael C. Clingerman, Michelle L. Lott, James T. Schneider
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Patent number: 5837620Abstract: A fiber glass mat especially useful for bonding to wood contains glass fibers and a "B" staged resin, and the method of making the mat, are disclosed. A substantial portion of the resin binder can be a furfural alcohol, phenol formaldehyde, melamine formaldehyde, or any other resin that can be "B" staged.Type: GrantFiled: October 10, 1996Date of Patent: November 17, 1998Assignee: Johns Manville International, Inc.Inventor: Richard Emil Kajander
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Patent number: 5822868Abstract: Polyacetal compositions containing a minor amount of sodium acetate sufficient to exhibit a luminous flame when exposed to combustible conditions.Type: GrantFiled: September 6, 1996Date of Patent: October 20, 1998Assignee: HNA Holdings, Inc.Inventors: Alex Forschirm, James Howard
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Patent number: 5789526Abstract: Disclosed is a highly viscous condensation product containing sulfonic acid groups based on amino-s-triazines with at least 2 amino groups and formaldehyde which has a viscosity of 500 to 100,000 cp at 20.degree. C. and a pH value of 8.0 to 13.0 as an aqueous solution with a solids content of 20% by weight. The product is obtainable by (a) condensation of amino-s-triazine, formaldehyde and sulfite in a molar ratio of 1:1.9 to 2.9:0.7 to 1.3 in aqueous solution at a pH value of 9.0 to 12.0 and a temperature of 50.degree. to 90.degree. C. until the sulfite is no longer detectable, and (b) subsequent further condensation at a pH value of 2.0 to 5.0 and a temperature of 50.degree. to 100.degree. C. until the viscosity exhibits the desired value.Type: GrantFiled: February 22, 1996Date of Patent: August 4, 1998Assignee: SKW Trostberg AktiengesellschaftInventors: Josef Weichmann, Franz Wolfertstetter, Herbert Winkelmann, Alfred Kern
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Patent number: 5767205Abstract: A polyacetal resin is blended with a copolymer of styrene with 1-(1-isocyanato-1-methylethyl)-3-(1-methylethenyl)benzene to prepare a resin composition which does not cause phase separation, has an excellent extrusion stability, and provides excellent surface appearance and physical properties for a molding thereof.Type: GrantFiled: September 28, 1995Date of Patent: June 16, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Mitsuteru Mutsuda, Kenji Nakama
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Patent number: 5750634Abstract: Disclosed is a soluble polycondensation product based on amino-s-triazines with at least two amino groups and forma ehyde, a process for making the product and the use thereof as an additive for an aqueous binding agent suspension.Type: GrantFiled: March 18, 1996Date of Patent: May 12, 1998Assignee: SKW Trostberg AktiengesellschaftInventors: Gerhard Albrecht, Josef Weichmann, Ludwig Eibl, Christian Huber, Alfred Kern
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Patent number: 5744527Abstract: There is provided a polyacetal resin composition having excellent in weather and environmental resistances, in which resin degradation/discoloration and bleeding of additives/discoloration are suppressed to the utmost in extended exposure to light and an initial surface condition of a molded product is maintained.Hundred parts by weight of the polyacetal resin (A) are blended with 0.01 to 2.0 parts by weight of the UV absorber (C), 0.01 to 1 part by weight of the low-molecular hindered amine series substance (D-1) having a molecular weight of less than 700 and 0.01 to 4 parts by weight of the high molecular hindered amine series substance (D-2) having a molecular weight of 700 or more. The oxyalkylene polymer (E) may be contained therein.Type: GrantFiled: September 22, 1994Date of Patent: April 28, 1998Assignee: Polyplastics Co., Ltd.Inventors: Toru Katsumata, Nobuyuki Matsunaga
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Patent number: 5719228Abstract: The present invention relates to a glass fiber binding composition having an effective binding amount of an aqueous compatible furan resin mixed with sufficient water to result in a binding composition having from 0.5 to 80% nonvolatile. The aqueous compatible furan resin is the reaction product of a source of ammonia and a first reaction product, the first reaction product being derived from the reaction of an acidic furan resin, a source of reactable formaldehyde, and a formaldehyde scavenger. The invention further pertains to a process of binding glass fibers at junctions of the fibers comprising the steps of providing glass fibers, applying an effect binding amount of the binding composition of the invention to the glass fibers such that the binder is present at a portion of the junctions, and curing the resin at the junctions of the glass fibers.Type: GrantFiled: January 6, 1995Date of Patent: February 17, 1998Assignees: Schuller International, Inc., QO Chemicals Inc.Inventors: Thomas John Taylor, William Henry Kielmeyer, Carl A. Rude
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Patent number: 5714525Abstract: Densified particles of friction ingredients which include an uncured mix of friction ingredients with a thermosetting binder resin and an effective amount of a liquid coreactive with the resin which maintains the temperature during particle formation below the curing temperature of the resin can be used to make friction elements. Methods of forming friction elements from the particles and friction elements made from the particles also are described.Type: GrantFiled: December 7, 1995Date of Patent: February 3, 1998Assignee: Plastics Enginerring CompanyInventors: Ralph T. Brotz, Paschal A. Sciarra, Jr., Phillip A. Waitkus
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Patent number: 5710239Abstract: The present invention relates to a sulfonated water-soluble melamine-formaldehyde resin, to a method of manufacturing the resin, and to insulation products prepared using the resin. The resin is particularly useful for making thermal insulation having low moisture adsorption, high tensile strength and low formaldehyde emissions.Type: GrantFiled: February 29, 1996Date of Patent: January 20, 1998Assignee: Georgia-Pacific Resins, Inc.Inventor: Kim K. Tutin
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Patent number: 5705599Abstract: Graft polymers of ketone-aldehyde condensation and co-condensation products and/or the monovalent or polyvalent metal compounds thereof are described, in which condensation product consistsa) of symmetrical or asymmetrical ketones containing aliphatic, araliphatic, cyclic or aromatic hydro-carbon radicals with at least one nonaromatic radical,b) an aldehyde of the formula R--(CHO).sub.n, wherein n=1 to 2 and R can be hydrogen or an aliphatic, araliphatic, aromatic or heterocyclic radical, andc) optionally of carboxyl, sulpho, sulphamido, sulphoxy, sulphoalkylamine or sulphoalkyloxy groups,to which product anionic and/or nonionic and/or cationic unsaturated monomers have been grafted. These graft polymers are outstandingly suitable as dispersants for inorganic binder suspensions and solutions, for aqueous clay suspensions and solutions or coal/water suspensions, as retention agents, thickeners, in particular for aqueous systems, and as agents for preventing the swelling of clay in aqueous systems.Type: GrantFiled: December 29, 1995Date of Patent: January 6, 1998Assignee: SKW Trostberg AktiengesellschaftInventors: Josef Felixberger, Johann Plank
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Patent number: 5696201Abstract: A process which permits the production of mouldings which have little odor and comprise fibrous semifinished products to which heat-curing novolak resins have been added and which are suitable for lining heat-emitting and/or sound-emitting vehicle parts, in which their binders are completely and uniformly crosslinked. The odor emission, in particular the formaldehyde emission, is thus reduced. This process furthermore permits the production of products having an unusually large layer thickness. The homogeneous polymerisation reaction is achieved by the use of a hot fluid in the form of a dry, saturated steam and under elevated pressure.Type: GrantFiled: December 29, 1995Date of Patent: December 9, 1997Assignee: Matec Holding AGInventors: Carlo Cavalloni, Antonio La Grotteria, Harald Freyer
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Patent number: 5693709Abstract: Polyoxymethylene with improved acid stability, process for production and use thereof. By adding 0.01 to 5 parts of an alkali metal salt of a polybasic acid, for example oxalic acid, citric acid and/or 0.01 to 5 parts of a polyalkylene glycol, for example polyethylene glycol and/or 0.1 to 100 parts of a thermoplastic polyurethane, each related to 100 parts of a polyoxymethylene, this polymer is stabilized against attack by acids, wherein in particular the combination of an alkali metal salt, in particular an oxalate, with small proportions of a thermoplastic polyurethane is advantageous. The proportion of thermoplastic polyurethane may be reduced when the thermoplastic polyurethane has a Shore A hardness of 70 to 96. The weight loss of a stabilized POM under the action of acid may be less than 3% of that of an unstabilized POM. The products are useful when exposed to acidic agents such as irrigation systems, dishwashers, sanitary installations.Type: GrantFiled: August 26, 1996Date of Patent: December 2, 1997Assignee: Degussa AktiengesellschaftInventors: Edwin Nun, Stephanie Schauhoff, Detlef Arnoldi
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Patent number: 5684118Abstract: A method of scavenging formaldehyde in formaldehyde-based resins using a low mole ratio melamine-urea-formaldehyde resin composition. In addition, a formaldehyde-based resin containing a storage-stable low mole ratio melamine-urea-formaldehyde resin composition as a formaldehyde scavenger.Type: GrantFiled: March 26, 1996Date of Patent: November 4, 1997Assignee: Georgia-Pacific Resins, Inc.Inventors: Robert A. Breyer, Bill R. Arndell, Semyon Stompel
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Patent number: 5681917Abstract: A low mole ratio melamine-urea-formaldehyde resin useful as a binder for making a variety of products, and a method for making the resin. The melamine-urea-formaldehyde resin thus produced is stable and has low formaldehyde emissions (release).Type: GrantFiled: March 26, 1996Date of Patent: October 28, 1997Assignee: Georgia-Pacific Resins, Inc.Inventors: Robert A. Breyer, Solona G. Hollis, Joseph J. Jural, deceased
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Patent number: 5670571Abstract: An aqueous dispersion of small particles of a phenol/formaldehyde novolac resin, referred to as a dispersed novolac resin, useful for example as a binder in preparing glass fiber insulation. The dispersed novolac resin is produced by preparing a molten novolac resin, cooling, adding water and optionally a surfactant and then adding a protective colloid. Additional water is added to provide the desired dispersion.Type: GrantFiled: November 3, 1995Date of Patent: September 23, 1997Assignee: Georgia-Pacific Resins, Inc.Inventors: Kurt D. Gabrielson, Rodney R. Conner
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Patent number: 5665853Abstract: The tensile strength properties of paper are improved by adding to paper stock a resin composition comprising a water-soluble polymer containing a polyhydric alcohol such as sorbitol in the backbone of the polymeric molecule.Type: GrantFiled: September 3, 1996Date of Patent: September 9, 1997Assignee: Geo Speciality Chemicals, Inc.Inventor: Jose M. Rodriguez
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Patent number: 5648404Abstract: A binder composition of a phenolic novolac resin and a (lower) alkoxylated triazine-formaldehyde resin curing agent is disclosed. The triazine resins have sufficient carbon atoms in the alkoxy groups so as to provide a curing agent having a water solubility of less than 15%. The binder cures at high temperatures so as to provide improved flow and prolonged workability to the composition. The compositions are useful in refractory applications having a need for high temperature curing agents such as for maintenance and repair within refractory vessels by gunning/spraying, manufacture of electrodes by the Soderberg method, and for use in blast furnace tap holes.Type: GrantFiled: April 11, 1994Date of Patent: July 15, 1997Assignee: Borden Inc.Inventor: Arthur Harry Gerber
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Patent number: 5589536Abstract: The present invention relates to a glass fiber binding composition comprising an effective binding amount of an aqueous soluble furan resin, 15 to 99 percent by weight water, and an effective amount of a catalyst for curing the furan resin. The invention further pertains to a process of binding glass fibers at junctions of the fibers comprising the steps of providing newly formed glass fibers, applying an effect binding amount of an aqueous soluble furan resin to the junctions of the glass fibers, and curing the resin at the junctions of the glass fibers. Finally, the invention also discloses a glass fiber composition comprising a plurality of glass fibers having a plurality of junctions where two or more fibers meet, and an effective binding amount of an aqueous soluble furan resin comprising 15 to 99% water applied to the junctions of the glass fibers.Type: GrantFiled: March 13, 1995Date of Patent: December 31, 1996Assignees: QO Chemicals, Inc., Schuller International, Inc.Inventors: Carlo M. Golino, Thomas J. Taylor, William H. Kielmeyer, Leo K. Thiessen, Carl A. Rude
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Patent number: 5559180Abstract: A polyacetal composition is provided for use in plastic-plastic wear applications, said composition containing about 85 to 99 weight percent polyacetal, about 0 to 5 weight percent polytetrafluoroethylene fibers, about 0.5 to 5 weight percent ethylene methyl acrylate copolymer, and about 0.5 to 5 weight percent of at least one lubricant. The compositions are particularly useful in forming shaped articles for use especially in conveyor chain applications and gear applications.Type: GrantFiled: April 3, 1995Date of Patent: September 24, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: Tatsuhiro Takahashi, Edmund A. Flexman, Robert J. Kassal
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Patent number: 5550176Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst, a liquid carbonizable component, and copper particles, which when treated with the catalyst will provide a carbon yield of at least 40% for the liquid component at an elevated baking temperature and possess increased flexural strength at elevated temperatures and reduced electrical resistance.Type: GrantFiled: March 23, 1995Date of Patent: August 27, 1996Assignee: UCAR Carbon Technology CorporationInventors: Irwin C. Lewis, Terrence A. Pirro, Ronald A. Greinke, Richard I. Bretz, Dennis J. Kampe
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Patent number: 5534612Abstract: The present invention relates to a glass fiber binding composition having an effective binding amount of an aqueous compatible furan resin mixed with sufficient water to result in a binding composition having from 0.5 to 80% nonvolatile. The aqueous compatible furan resin is the reaction product of a source of ammonia and a first reaction product, the first reaction product being derived from the reaction of an acidic furan resin, a source of reactable formaldehyde, and a formaldehyde scavenger. The invention further pertains to a process of binding glass fibers at junctions of the fibers comprising the steps of providing glass fibers, applying an effect binding amount of the binding composition of the invention to the glass fibers such that the binder is present at a portion of the junctions, and curing the resin at the junctions of the glass fibers.Type: GrantFiled: May 19, 1993Date of Patent: July 9, 1996Assignee: Schuller International, Inc.Inventors: Thomas J. Taylor, William H. Kielmeyer
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Patent number: 5502093Abstract: Polyacetal resin compositions have excellent weather resistance and environment resistance, which suppress resin deterioration/discoloration, crack and discoloration caused by additive bleeding during extended exposure to light while maintaining the initial molded product surface condition. The polyacetal compositions include a blend of (A) 100 parts by weight of a polyacetal resin, with the specific amounts of (B) an acrylic resin, (C) an oxyalkylene polymer having chains of 2 to 8 consecutive carbon atoms, (D) a UV absorber and (E) two kinds of the hindered amine compounds each having a different molecular weight.Type: GrantFiled: November 21, 1994Date of Patent: March 26, 1996Assignee: Polyplastics Co., Ltd.Inventors: Toru Katsumata, Nobuyuki Matsunaga
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Patent number: 5478877Abstract: An antistatic agent imparting excellent antistatic property to the polyacetal resins and the polyacetal resins using this antistatic agent. The antistatic agent for polyacetal resins is obtained by including polyalkylene polyols or metal salt-dissolved polyalkylene polyols in a basic carbonate of metals consisting chiefly of alkali metals and aluminum having a porous volume of 0.5 cc/g or larger over a region of meso pores to quasi-macro pores of porous radii of from 200 to 1000 angstroms or in an anion exchanger thereof, said porous volume being greater than 30% of the whole porous volume, and a polyacetal resin composition in which said antistatic agent is blended. The antistatic agent of the invention imparts stable antistatic properties to the above resins and is little dependent upon the environment, and further does not lose thermal property or mechanical strength that occurred with the conventional antistatic agents.Type: GrantFiled: February 21, 1995Date of Patent: December 26, 1995Assignees: Mizusawa Industrial Chemicals, Ltd., Plyplastics Corporation Ld.Inventors: Yoshinobu Komatsu, Hiroshi Igarashi, Takahisa Erami
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Patent number: 5473043Abstract: Moisture-curable urethane resin compositions comprising: (a) a urethane prepolymer having two or more terminal isocyanate groups, (b) a blocked amine compound which is essentially nonreactive with an isocyanate group and generates a primary or a secondary amino group upon contact with water, and (c) an inorganic filler treated with an organic compound, are disclosed. More particularly, the urethane resin compositions comprise a hydrophilic urethane prepolymer having oxyethylene moieties, and a blocked amine compound having two or more oxazolidine rings.Type: GrantFiled: April 8, 1994Date of Patent: December 5, 1995Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Hirohisa Maki, Shigenobu Miyamoto, Ryoji Fujimoto, Toshiki Noda