With Phenol Or Inorganic Phenolate Patents (Class 524/594)
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Patent number: 5710209Abstract: An aqueous dispersion of a polyester polyurethane which contains as essential building component 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane and its use as the binder for one- or two-component coating compositions, optionally in combination with cross-linking agent resins selected from optionally blocked polyisocyanates and/or aminoplast resins.Type: GrantFiled: February 20, 1996Date of Patent: January 20, 1998Assignee: Bayer AktiengesellschaftInventors: Harald Blum, Josef Pedain
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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: 5691401Abstract: The present invention provides curable resin compositions containing finely divided particles of a cured organosiloxane material with microparticles of silica bound to the surfaces of the particles. The particle size of the cured organosiloxane material and the particle size and properties of the silica are within specified limits.Type: GrantFiled: May 18, 1995Date of Patent: November 25, 1997Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Yoshitsugu Morita, Atsushi Sasaki
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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: 5663217Abstract: An ink jet ink especially for printing on to plain paper comprises a suspension in (a) non aqueous solvent of (b) a disperse phase comprising: (i)) a water-insoluble dyestuff which is insoluble in said solvent at the ink jet operating temperature and below; (ii) a water insoluble resinous dispersant for the dyestuff which in the amount used is capable of forming a solution in the said solvent at the ink jet operating temperature, (iii) a polymer binder to hold the dyestuff on the surface of the paper.Type: GrantFiled: July 9, 1993Date of Patent: September 2, 1997Assignee: XAAR LimitedInventor: Jurgen M. Kruse
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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: 5639806Abstract: Proppants comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Foundry sands comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Methods of making and using these proppant particles in subterranean formations or making and using these foundry sands in foundries are also disclosed.Type: GrantFiled: March 28, 1995Date of Patent: June 17, 1997Assignee: Borden Chemical, Inc.Inventors: Calvin K. Johnson, Kwok-tuen Tse
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Patent number: 5612405Abstract: Described is an aqueous sprayable glass fiber binding composition comprising: a) an aqueous compatible formaldehyde thermosetting coating composition; and b) a compatible aqueous latex elastomeric composition. Also described are binder compositions that decrease fallout of glass fiber and binder from the coated glass fiber. Also disclosed is a glass fiber binder composition having low odor content.Type: GrantFiled: April 24, 1995Date of Patent: March 18, 1997Assignee: Schuller International, Inc.Inventors: David W. Bainbridge, James W. Stacy, Mario P. Tocci
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Patent number: 5578669Abstract: The present invention relates to a water-based coating composition suited for surface treatment of the metal sheets or plates to be used in building materials, household electric appliances, automobiles and so forth. The object of the present invention is to provide a water-based coating composition for the steel or metal coated steel surface treatment which gives coating films firmly adhering to metal plates and showing a high degree of hardening as well as excellent corrosion resistance, water resistance and weldability upon baking under low-temperature short-period conditions, has electric conductivity suited for electrodeposition coating and provides lubricating property in processing to thereby prevent powdering during processing as well as a method of forming coating films using said composition.Type: GrantFiled: December 20, 1994Date of Patent: November 26, 1996Assignee: Nippon Paint Co., Ltd.Inventors: Taketoshi Odawa, Toshihiro Okai
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Patent number: 5567743Abstract: This invention relates to a process for reclaiming ester-cured phenolic resin bonded sand. The process comprises contacting attrition reclaimed sand with a compound which converts potassium compounds to a form having a melting point of least 550.degree. C., and then thermally treating the sand at a temperature below that which the resulting potassium compound fuses.Type: GrantFiled: May 12, 1995Date of Patent: October 22, 1996Assignee: Asland Inc.Inventors: Andrew D. Busby, Philip Vernon
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Patent number: 5563190Abstract: The present invention provides a phenolic resin molding material comprising:a phenolic resin composition comprising 100 parts by weight of a phenolic resin, 10-70 parts by weight of an organic filler and 10-70 parts by weight of an inorganic filler, anda releasant consisting of 0.2-4 parts by weight of an amide wax having a melting point of 130.degree.-150.degree. C. and 0.1-2 parts by weight of an ester wax and/or a partially saponified ester wax each having a melting point of 80.degree.-105.degree. C.This phenolic resin molding material can provide a molded article which has good releasability and which shows excellent adherence to coating film formed thereon and excellent surface smoothness even after treatment at a high temperature and a high humidity.Type: GrantFiled: August 1, 1995Date of Patent: October 8, 1996Assignee: Sumitomo Bakelite Company LimitedInventor: Norihisa Fujimura
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Patent number: 5559179Abstract: A molding compound which comprises phenol resin or polyphenylenesulfide resin, chopped strands of glass fibers and powdery glass fibers having a length of about 10 to about 200 .mu.m is used suitably for molding a resin stator having an insert molded or post-inserted metallic outer race.Type: GrantFiled: November 10, 1994Date of Patent: September 24, 1996Assignee: NOK CorporationInventors: Shinji Mori, Katsutoshi Ishioka
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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: 5516587Abstract: A friction member having a high frictional force, a small frictional force fluctuation and excellent wear resistance, which is composed of a substrate coated with a friction material comprising a phenolic resin, 5 to 20% by weight, based on the weight of the friction material, of at least one heat-resistant fiber selected from the group consisting of carbon fiber and aromatic polyamide fiber, 10 to 50% by weight, based on the weight of the friction material, of a solid lubricant and 5 to 30% by weight, based on the weight of the friction material, of at least one wear resistant material selected from the group consisting of Al.sub.2 O.sub.3, SiC and Si.sub.3 N.sub.4, and if necessary, 5 to 20% by weight, based on the weight of the friction material, of at least one soft organic compond selected from the group consisting of a fluorine-containing organic compound and a silicon-containing organic compound.Type: GrantFiled: May 23, 1994Date of Patent: May 14, 1996Assignee: Daido Metal Company Ltd.Inventors: Tadashi Tanaka, Hidehiko Tamura, Katsumi Sawano, Nobutaka Hiramatsu
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Patent number: 5451657Abstract: An aqueous phenol-formaldehyde resin solution with formaldehyde-phenol mol ratio in the range of 1.8 to 2.8, polymerization catalyst of 3% to 9% by weight, measured as NaOH equivalent, with less than 1% by weight potassium hydroxide, and about 0.1% to about 0.75% by weight potassium carbonate added after the catalytically-activated polymerization reaction has subsided while the resin is both soluble and fusible ("A" resol stage). Adhesive binders exhibit tolerance for variables in veneer moisture content from 0% to around 25% and in production timing from delivery of the veneer for assembly to curing of around 10 minutes to about 2 hours without significant degradation of bonding quality.Type: GrantFiled: June 13, 1994Date of Patent: September 19, 1995Assignee: Neste Resins CorporationInventor: Norman A. Chappelie
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Patent number: 5424353Abstract: The invention relates to a thermosetting molding material, containing refractory fibers, characterized in that it can be injection molded and takes the form of a "flock" of 60 to 30% by weight of solid fillers which include refractory fibers, impregnated with 40 to 70% by weight of thermosetting resin. This molding material is obtained from a syrup of the catalysed thermosetting resin into which are introduced the solid fillers while mixing in such a way as to produce homogeneous impregnation of the filler with the catalyzed resin, then the mixture is kneaded until the filler is converted into a flock whereupon the flock/resin mixture is dried under reduced pressure. Application to the manufacture, in particular by conventional injection molding, of composite materials usable in the manufacture of motors for tactical missiles, in particular ablatable blast pipes.Type: GrantFiled: December 2, 1992Date of Patent: June 13, 1995Assignee: Aerospatiale Societe Nationale IndustrielleInventors: Christiane Ferrier, Jean-Marie Vernotte, Christian Romand
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Patent number: 5424376Abstract: The invention relates to an ester cured no-bake foundry binder system preferably comprising as separate components (a) an aqueous basic solution of a phenolic resole resin; and (b) a hardener comprising (i) a polyphenol resin, and (ii) a liquid ester. Alternatively, the polyphenol resin can be used as a separate component. The foundry binder systems produce foundry shapes with improved tensile strengths when compared to foundry shapes which are prepared from foundry binder systems which do not contain a polyphenol resin.Type: GrantFiled: October 4, 1993Date of Patent: June 13, 1995Assignee: Ashland Inc.Inventors: Ken K. Chang, William R. Dunnavant, Robert B. Fechter, Gary R. Hysell
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Patent number: 5407983Abstract: A composition is described with comprises a mixture of(A) from about 5% to about 60% by weight of at least one water-insoluble polymer;(B) from about 1% to about 30% by weight of inorganic or synthetic resinous hollow microspheres; and(C) from about 20% to about 70% of at least one volatile organic liquid which is a solvent for the polymer of (A).The compositions also may contain (D) at least one solid particulate inorganic filler. Adhesive compositions such as solvent cements prepared in accordance with the present invention are characterized as low V(olatile) O(rganic) C(hemical) compositions wherein the VOC is, for example, less than 500 or even less than 400 grams per liter.Type: GrantFiled: February 10, 1994Date of Patent: April 18, 1995Assignee: Oatey CompanyInventor: Paul E. Naton
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Patent number: 5382608Abstract: A binder mixture containing lignin or lignins with reactive groups and phenol-novolac in a weight ratio of 95:5 to 50:50 useful for the production of non-woven fabrics and wood fiber materials.Type: GrantFiled: August 5, 1994Date of Patent: January 17, 1995Assignee: Rutgerswerke AktiengesellschaftInventors: Arno Gardzielia, Ken Kurple, Achim Hansen, Stephan Schroter, Willi Roll
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Patent number: 5374678Abstract: A wood adhesive composition including an effective amount of a phenol-formaldehyde resin; and a modifying agent which agent renders the composition capable of bonding to a hard wood.Type: GrantFiled: January 15, 1993Date of Patent: December 20, 1994Assignees: Commonwealth Scientific & Industrial Research Organization, Huntsman Chemical Company Australia LimitedInventors: Peter J. Collins, Michael J. Delaney, Yoshikazu Yazaki
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Patent number: 5373051Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst and a liquid carbonizable component, and a boron containing or phosphorus containing material, which when treated with the catalyst will possess increased oxidation resistance at elevated temperatures.Type: GrantFiled: October 12, 1993Date of Patent: December 13, 1994Assignee: 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: 5354788Abstract: A phenolic resole resin for use as a foundry binder which has been internally modified to reduce its hot strength and thereby enhance its shakeout property is disclosed. The resin is the reaction product of a phenolic compound; a dialdehyde; and formaldehyde. A process of preparing such resin is also disclosed, comprising first reacting the phenolic compound and the dialdehyde, and subsequently reacting the product with the formaldehyde. The resin may be, in a preferred embodiment, an ester-curable alkaline phenolic resin. Also disclosed are a raw batch formulation including the resin of the invention, and foundry articles prepared therefrom.Type: GrantFiled: September 10, 1993Date of Patent: October 11, 1994Assignee: Borden, Inc.Inventors: Calvin K. Johnson, David R. Armbruster, Sudhir K. Trikha
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Patent number: 5346942Abstract: The present invention provides a monolithic refractory with self-flowability. A monolithic refractory of the first invention of the present invention contains refractory aggregates, liquid novolak type phenol resin and an organic separation preventative. A monolithic refractory of the second invention of the present invention contains refractory aggregates and a novolak type phenol resin solution with a number-average molecular weight of not more than 600. The first invention of the present invention gives good hot flowability and prevention of sedimentation of the aggregates to the monolithic refractory. The second invention gives good hot flowability, stabilization in adhesion and prevention of warpage of the hardened body obtained. With the present invention a monolithic refractory can be suitably selected and used according to its intended use and purpose.Type: GrantFiled: March 22, 1993Date of Patent: September 13, 1994Assignee: Shinagawa Refractories Co., Ltd.Inventors: Takashi Yamamura, Ryosuke Nakamura, Hiroshi Kiriyama
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Patent number: 5344909Abstract: A latent catalyzed phenolic resin composition is provided containing a thermosetting phenolic resole resin and a latent catalyst consisting essentially of a primary or secondary amine salt of a strong acid.Type: GrantFiled: June 3, 1993Date of Patent: September 6, 1994Assignee: Georgia-Pacific Resins, Inc.Inventors: David A. Hutchings, Ted M. McVay, Richard F. Pennock
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Patent number: 5344874Abstract: A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound condensable with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate fine condensed resin particles which hardly settle in said dispersion medium, and then replacing the water and/or the organic solvent by an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups.Type: GrantFiled: July 8, 1991Date of Patent: September 6, 1994Assignee: Asahi Glass Company Ltd.Inventors: Takao Doi, Noriko Itaya, Masami Yamashita, Nobuaki Kunii
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Patent number: 5342880Abstract: An aqueous phenol-formaldehyde resin solution with formaldehyde-phenol mol ratio in the range of 1.8 to 2.8, polymerization catalyst of 3% to 9% by weight, measured as NaOH equivalent, with less than 1% by weight potassium hydroxide, and about 0.1% to about 0.75% by weight potassium carbonate added after the catalytically-activated polymerization reaction has subsided while the resin is both soluble and fusible ("A" resol stage). Adhesive binders exhibit tolerance for variables in veneer moisture content from 0% to around 25% and in production timing from delivery of the veneer for assembly to curing of around 10 minutes to about 2 hours without significant degradation of bonding quality.Type: GrantFiled: March 20, 1992Date of Patent: August 30, 1994Assignee: Neste Resins CorporationInventor: Norman A. Chappelie
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Patent number: 5340537Abstract: Temperature indicating compositions of dispersions in an aqueous binder of a color changing electron donating compound having a melting point greater than about 300.degree. F. and a polymeric electron accepting resin reactive with the electron donating compound to produce a visible and permanent color change and having a T.sub.g and non-volatility effective to provide a color change to coatings containing the composition upon exposure to a predetermined heat history. Temperature indicating materials are also disclosed containing a support coated on at least one surface thereof with the temperature indicating composition to the present invention.Type: GrantFiled: April 16, 1993Date of Patent: August 23, 1994Assignee: Big Three Industries, Inc.Inventor: Richard B. Barrett
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Patent number: 5334630Abstract: This invention relates to a thixotropic laminating resin composition comprising an acid hardenable phenol-aldehyde resin, a highly dispersed hydrophobic amorphous silica and a viscosity modifier wherein the composition has a specified viscosity. Composites laminated with the above composition have improved dimensional stability and are resistant to combustion or smoke emission.Type: GrantFiled: August 30, 1991Date of Patent: August 2, 1994Assignee: BP Chemicals LimitedInventors: Robert S. Francis, Murray R. Orpin
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Patent number: 5328879Abstract: The present invention pertains to a binding and plasticizing agent for preparing refractory materials, in which the binding agent contains a synthetic resin, a phosphate, and a surface-active agent.Type: GrantFiled: March 8, 1993Date of Patent: July 12, 1994Assignee: Veitscher-Magnesitwerke-Actien-GesellschaftInventors: Gunnar Kloss, Christian Weidemuller
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Patent number: 5312862Abstract: Methods are presented by which compressed fluids such as carbon dioxide, nitrous oxide, and ethane can be admixed with solvent-borne compositions that contain a high concentration of solid polymer, such as coating compositions, whereby precipitation of the solid polymer can be avoided, thereby preventing plugging of the mixing apparatus.Type: GrantFiled: December 18, 1992Date of Patent: May 17, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Kenneth A. Nielsen, Jeffrey J. Lear, John N. Argyropoulos, Alex Chia-Huei Kuo
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Patent number: 5310784Abstract: An electromagnetic wave shielding material comprises a composite carbon-resin compound obtained by reacting to proceed polymerization of a resin forming material with carbon powder intermixed therewith. The resulting compound has carbon powder substantially uniformly dispersed in the resin and exhibit superior electromagnetic wave shielding effect, in addition to good fire resistance. The resin may be phenol, melamine, furan or the like, and the carbon powder is preferred to be incorporated at a content of not less than 40% of the total weight.Type: GrantFiled: June 29, 1992Date of Patent: May 10, 1994Assignee: Lignyte Co., Ltd.Inventors: Isamu Ide, Hisato Higuchi, Masanobu Nishikawa, Shigehisa Ishihara, Shuichi Kawai
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Patent number: 5280063Abstract: A room temperature setting carbonaceous cement comprising a solid carbonaceous material, a catalyst and a liquid carbonizable component which when treated with the catalyst will provide a carbon yield of at least 40% at an elevated baking temperature and possess a flexural strength which is above at least 750 psi at room temperature and at said elevated temperature.Type: GrantFiled: April 17, 1992Date of Patent: January 18, 1994Assignee: Ucar Carbon Technology CorporationInventors: Irwin C. Lewis, Terrence Pirro, Ronald A. Greinke, Richard I. Bretz, Dennis J. Kampe
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Patent number: 5242957Abstract: A binder composition for producing articles of bonded particulate material such as foundry molds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin, an oxyanion which can form a stable complex with the resin, and a phenyl ethylene glycol ether. The binder composition has an alkali to phenol molar ratio of from 1.5:1 to 2.5:1 and the amount of alkali present in the solution is sufficient to substantially prevent stable complex formation between the resin and the oxyanion. Bonded articles are produced by passing carbon dioxide gas through articles formed from a mixture of particulate material and the binder composition so as to produce stable complex formation and curing of the resin.Type: GrantFiled: February 13, 1992Date of Patent: September 7, 1993Assignee: Foseco International LimitedInventors: Garry Smith, Martin Bradley
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Patent number: 5243015Abstract: A latent catalyzed phenolic resin composition is provided containing a thermosetting phenolic resole resin and a latent catalyst consisting essentially of a primary or secondary amine salt of a strong acid.Type: GrantFiled: June 25, 1992Date of Patent: September 7, 1993Assignee: Georgia-Pacific Resins, Inc.Inventors: David A. Hutchings, Ted M. McVay, Richard F. Pennock
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Patent number: 5240498Abstract: Provided is a carbonaceous binder composition which comprises a polymerized and dehydrated carbohydrate, a monomer or polymer of resorcinol, and water. It is important that the carbohydrate is a polymer when combined with the remaining components of the composition. Polymerization of the carbohydrate prior to being combined with the other components of the composition has been found to result in an increased carbon yield upon pyrolysis of the binder. The binder composition also has an effective shelf life of three months or longer and gives off no objectionable smell either before or after being pyrolyzed. More importantly, the binder is also free of any skin or respiratory irritants, and is in effect non-carcinogenic.Type: GrantFiled: January 9, 1991Date of Patent: August 31, 1993Assignee: Martin Marietta Magnesia Specialties Inc.Inventors: Ralph Matalon, Keith Bridger, Francis W. Henry
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Patent number: 5218010Abstract: The hardening of a composition containing a phenolic resin solution and a magnesia aggregate is effected by mixing into such composition at a pH of at least 4.5: a compound which provides an acetate, adipate, 4-aminobenzeneslfonate, 1,2,4-benzenetricarboxylate, formate, glycolate, lactate, nitrate, benzenesulfonate, naphthalenesulfonate, methanesulfonate, phenolsulfonate, succinate, sulfamate, or toluenesulfonate anion to the composition; or an acetylacetone, 2-nitrophenol, 4-nitrophenol, salicylaldehyde compound; or a mixture of said compounds.Type: GrantFiled: September 10, 1992Date of Patent: June 8, 1993Assignee: Borden, Inc.Inventor: Arthur H. Gerber
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Patent number: 5214079Abstract: There are disclosed methods and compositions for accelerating the hardening of phenolic resole resins having a pH of about 4.5 to 9.5 with lightburned magnesium oxide or magnesium hydroxide, with or without the addition of an ester functional hardening agent. Acceleration of hardening is achieved by incorporating into said compositions an effective quantity of a material which: increases the solubility of magnesium in the hardenable mixture; by certain amines; or by certain chelating agents. Accelerator compounds include those which provide chloride, sulfamate, nitrate, formate, and phosphite anions as well as selected tertiary amines.Type: GrantFiled: September 10, 1992Date of Patent: May 25, 1993Assignee: Borden, Inc.Inventor: Arthur H. Gerber
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Patent number: 5208274Abstract: There is disclosed methods and compositions for retarding the room temperature hardening of phenolic resole resins when such resins are mixed with lightburned magnesium oxide with or without an ester functional hardening agent. Compounds which act as retarders include azelaic acid, salicylamide, sulfanilic acid, glyoxal, salicylic acid, N-methylaniline, and 2,6-diethylaniline.Type: GrantFiled: September 10, 1992Date of Patent: May 4, 1993Assignee: Borden, Inc.Inventor: Arthur H. Gerber
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Patent number: 5202189Abstract: The specification discloses fire retardant composites which are curable at ambient temperatures and based on resorcinol-formaldehyde resins having specified molar ratios of phenol and aldehyde and specific viscosities.Type: GrantFiled: February 13, 1989Date of Patent: April 13, 1993Inventor: Lawrence E. Shea
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Patent number: 5198478Abstract: A binder composition for producing articles of bonded particulate material such as foundry moulds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin, an oxyanion which can form a stable complex with the resin, and pyrrolidone or an N-substituted pyrrolidone, and the amount of alkali present in the solution is sufficient to substantially prevent stable complex formation between the resin and the oxyanion. Bonded articles are produced by passing carbon dioxide gas through articles formed from a mixture of particulate material and the binder composition so as to produce stable complex formation and curing of the resin.Type: GrantFiled: February 11, 1992Date of Patent: March 30, 1993Assignee: Foseco International LimitedInventors: Garry Smith, Martin Bradley
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Patent number: 5162428Abstract: A phenolic resin composition comprising (a) 30-55% by weight of an alkylbenzene-modified novolac type phenolic resin, (b) 30-55% by weight of a novolac type phenolic resin and (c) 15-30% by weight of a dimethylene ether resole type phenolic resin, and a phenolic resin molding material comprising said composition.Type: GrantFiled: August 21, 1990Date of Patent: November 10, 1992Assignee: Sumitomo Bakelite Company LimitedInventors: Ken Katoh, Keiji Ooi
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Patent number: 5162393Abstract: Foundry sand cores are produced by a method comprising the steps of:(1) providing a core box to contain the core(2) injecting into the core box a mixture of sand and a binder capable of being cured by means of carbon dioxide gas so as to form the core(3) passing carbon dioxide gas under pressure into the core box so as to fill the core box(4) holding the core in contact with the carbon dioxide gas so as to cure the binder(5) releasing the pressure and allowing carbon dioxide gas to escape from the core box and(6) removing the cured core from the core box.The method can also be used to produce moulds and is of particular use in the production of cores or moulds from a mixture of sand and a binder consisting of an alkaline aqueous solution of a phenol-formaldehyde resin and an oxyanion such as borate capable of forming a stable complex with the resin.Type: GrantFiled: April 25, 1991Date of Patent: November 10, 1992Assignee: Foseco International LimitedInventors: John S. Griffin, Thomas A. Penko
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Patent number: 5087659Abstract: An ink composition as a steam sterilizing indicator for use in ink jet printing which comprises a salt of a cyanine dyestuff with phenol resins in amounts of 0.1-5% by weight as the cyanine dyestuff and in amounts of 0.2-30% by weight as the phenol resins, dissolved in organic solvents in amounts of 70-96% by weight based on the ink composition.The ink composition may further contain at least one of alkali metal salts, resins containing carboxyl groups therein, aliphatic carboxylic acids, anticorrosion agents, nonionic surfactants and dyestuffs which are unchanged in color under sterilizing conditions.The ink composition is discolored or changes in color under steam sterilization conditions.Type: GrantFiled: October 2, 1989Date of Patent: February 11, 1992Assignee: Sakura Color Products CorporationInventor: Toshiki Fujisawa
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Patent number: 5032431Abstract: A dark colored glass fiber insulation having improved moisture tolerance prepared using an aqueous phenolic resole resin composition containing a water soluble borate and cured under alkaline conditions.Type: GrantFiled: February 6, 1990Date of Patent: July 16, 1991Assignee: Georgia-Pacific Resins, Inc.Inventors: Rodney R. Conner, Mary L. Foster
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Patent number: 5030685Abstract: A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound condensable with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate fine condensed resin particles which hardly settle in said dispersion medium, and then replacing the water and/or the organic solvent by an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups.Type: GrantFiled: September 28, 1989Date of Patent: July 9, 1991Assignee: Asahi Glass Company, Ltd.Inventors: Takao Doi, Noriko Itaya, Masami Yamashita, Nobuaki Kunii
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Patent number: 5021539Abstract: Modified benzylic ether resole resins and process for their preparation. The resins are prepared by treating a phenol with a molar excess of aldehyde in the presence of a divalent metal ion catalyst at a pH below 7 followed by further reaction at a pH above 8 in the presence of an alkaline catalyst. Alkaline solutions of the resins are used as foundry binders in an ester cure process.Type: GrantFiled: March 24, 1989Date of Patent: June 4, 1991Assignee: Acme Resin CorporationInventors: David R. Armbruster, Merlyn C. Pasion
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Patent number: 5010125Abstract: An ink jet ink composition useful for printing on plain paper at room temperature comprises a colloidal suspension of a nonaqueous solvent (e.g. selected glycol ethers) and dispersed particles comprising a natural resin or synthetic polymer which is insoluble in water but soluble in the solvent at room temperature, and a dyestuff which is soluble in or bindable to the resin or polymer at room temperature but substantially insoluble in the solvent at room temperature. The ink composition is fluid and has a low viscosity at room temperature.Type: GrantFiled: September 20, 1989Date of Patent: April 23, 1991Assignee: XAAR LimitedInventors: Jurgen M. Kruse, Donald B. Kimball, Jr.
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Patent number: 5004789Abstract: Compositions of phenolic resins, for example, phenol formaldehyde resins, containing an additive of triethanolamine borate or an amine/oxygen-containing boron derivative mixture, e.g., triethanolamine and boric anhydride, are particularly useful for the manufacture of prepeg mats.Type: GrantFiled: June 4, 1987Date of Patent: April 2, 1991Assignee: Societe Chimiques des Charbonnages S.A.Inventors: Francois Boinot, Michel Cousin, Pierre-Michel Francois, Francois Michel-Dansac
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Patent number: 4985489Abstract: A binder composition for producing articles of bonded particulate material such as foundry moulds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin and an oxyanion capable of forming a stable complex with the resin the amount of alkali present in the solution being sufficient to substantially prevent stable complex formation. Bonded articles are produced from mixtures of particulate material and the binder composition by passing carbon dioxide gas through the formed articles whereby the oxyanion forms a stable complex with the resin and the resin is cured. The oxyanion may be for example borate, stannate or aluminate.Type: GrantFiled: September 29, 1989Date of Patent: January 15, 1991Assignee: Foseco International LimitedInventors: Sidney A. Barker, Neil Baggett, John Stevenson, Raymond D. George, David R. De Courcy, Timothy Hammond, Martin Bradley
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Patent number: RE34228Abstract: Modified benzylic ether resole resins and process for their preparation. The resins are prepared by treating a phenol with a molar excess of aldehyde in the presence of a divalent metal ion catalyst at a pH below 7 followed by further reaction at a pH above 8 in the presence of an alkaline catalyst. Alkaline solutions of the resins are used as foundry binders in an ester cure process.Type: GrantFiled: March 2, 1992Date of Patent: April 20, 1993Assignee: Acme Resin Corp.Inventors: David R. Armbruster, Merlyn C. Pasion