With Or Derived From Organic Hydroxyl Group Containing Material Containing Eight Or More Carbon Atoms Patents (Class 523/147)
  • Patent number: 12091521
    Abstract: The invention relates to a composition for the production of foams based on phenolic resin, use thereof, and a process for the production of the composition. For provision of a composition for the production of foams based on phenolic resin, where the said composition delivers improved reaction to fire with, in essence, no alteration of further important foam properties, it is proposed that the composition comprises an alkoxylated novolak, wherein the novolak is produced using phenol, cresol and/or xylenol.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: September 17, 2024
    Assignee: BAKELITE GMBH
    Inventors: Stephan Schröter, Rosel Bölke, Daniel Dahlhaus
  • Patent number: 11305336
    Abstract: A foundry mix includes a major amount of a foundry aggregate and an effective binding amount of a binder system. The binder system cures in the presence of sulfur dioxide and a free radical initiator. The binder system may include (1) 10 to 70 parts by weight of an epoxy novolac resin; (2) 0.5 to 10 parts by weight of resorcinol; (3) 20 to 70 parts by weight of a monomeric or polymeric acrylate; and (4) an effective amount of a free radical initiator. Notably, (1), (2), (3) and (4) are separate components or mixed with another of said components, provided (4) is not mixed with (3), where said parts by weight are based upon 100 parts of the binder system.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: April 19, 2022
    Inventors: James T. Schneider, Frances Trenta
  • Patent number: 11221181
    Abstract: A method is shown for handling a slag pot or ladle and pyrometallurgical tools made form steel or cast iron, comprising the steps of spraying a mineral suspension onto a wall and bringing said slag pot or ladle or the pyrometallurgical tool into service, wherein said mineral suspension comprises calcic particles in suspension in an aqueous phase forming a calcic particle milk having a calcic particle content of between 20% and 60% by weight with respect to the weight of said calcic particle milk, said mineral layer being a fine layer.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: January 11, 2022
    Inventor: Guillaume Denollin
  • Patent number: 8436073
    Abstract: Described herein, in the preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, preferably leonardite, combined with a polymerizable polyol, an isocyanate, and a polymerization catalyst to make a polyurethane resin binder in situ in a foundry aggregate, such as sand. The lignite is mixed with the polymerizable polyol and dispersing agents as additives to improve the suspension quality and binder performance of the lignite-containing part of the binder components.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: May 7, 2013
    Assignee: Amcol International
    Inventors: Jianbo Di, Joseph M. Fuqua
  • Patent number: 7928151
    Abstract: A resin composition for a shell mold which reduces smoke generation upon molding of a casting mold and maintains a crumbility and a casting mold strength of a phenolic resin, and resin coated sand by the use thereof are provided. The resin composition for the shell mold includes the phenolic resin and an aromatic condensed phosphate ester. The phenolic resin is used as a binder of the resin coated sand used for producing a main mold and a core for shell mold casting of cast iron, cast steel, aluminum, and the like. The aromatic condensed phosphate ester is very effective as a crumbling agent for improving the crumbility of the casting mold after casting.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: April 19, 2011
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Daiki Oniyanagi, Masaru Wada, Yoshirou Oowada, Tetsurou Saikawa
  • Patent number: 7407994
    Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl ester of a fatty acid, wherein the alkyl group of the ester is an aliphatic hydrocarbon having from 4 to 8 carbon atoms, preferably butyl tallate; and (d) an effective amount of a free radical initiator. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: August 5, 2008
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Jorg Kroker, H. Randall Shriver
  • Patent number: 7122583
    Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl ester of a fatty acid, wherein the alkyl group of the ester is an aliphatic hydrocarbon having from 4 to 8 carbon atoms, preferably butyl tallate; and (d) an effective amount of a free radical initiator. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: October 17, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: Jorg Kroker, H. Randall Shriver
  • Patent number: 7081487
    Abstract: This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) an effective amount of a oxidizing agent, and (d) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: July 25, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventor: H. Randall Shriver
  • Patent number: 7019047
    Abstract: This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an alkyl silicate; (c) an ester of a fatty acid, (d) an effective amount of a oxidizing agent, and (e) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: March 28, 2006
    Assignee: Ashland Licensing and Intellectual Property LLC
    Inventors: H. Randall Shriver, Xianping Wang, Jorg Kroker
  • Patent number: 6662854
    Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an aliphatic epoxy resin; (b) a multifunctional acrylate; and (c) an effective amount of a free radical initiator. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly aluminum castings.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: December 16, 2003
    Assignee: Ashland Inc.
    Inventors: Wayne D. Woodson, H. Randall Shriver
  • Patent number: 6632856
    Abstract: This invention relates to a polyurethane-forming no-bake foundry binder comprising a (a) polyether polyol component comprising (1) a polyether polyol, (2) hydrofluoric acid, and (3) an aminoalkoxysilane, (b) a polyisocyanate component, (c) a liquid tertiary amine catalyst component. Foundry mixes are prepared by mixing the binder system with a foundry aggregate by a no-bake process. The resulting foundry shapes are used to cast metal parts from ferrous and non-ferrous metals.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: October 14, 2003
    Inventors: Chia-hung Chen, Jorg Kroker
  • Patent number: 6604567
    Abstract: This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl silicate; and (d) an effective amount of a free radical initiator. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: August 12, 2003
    Assignee: Ashland Inc.
    Inventors: Wayne D. Woodson, H. Randall Shriver
  • Patent number: 6593397
    Abstract: This invention relates to furan no-bake foundry binders comprising (a) furfuryl alcohol and/or a reactive furan resin, (b) an activator selected from the group consisting of resorcinol, resorcinol pitch, and bisphenol A tar (c) a bisphenol compound (d) a polyol selected from the group consisting of polyester polyols, polyether polyols, and mixtures thereof, and preferably (e) a silane. The binders are cured in the presence of the furan curing catalyst. The invention also relates to foundry mixes prepared with the binder, foundry shapes prepared with the foundry mix, and metal castings prepared with the foundry shapes.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: July 15, 2003
    Assignee: Ashland Inc.
    Inventor: Ken K. Chang
  • Patent number: 6569918
    Abstract: A polymer composition that can be used to cure a novolac resin at a lower temperature than conventional curing agents and with reduced emission of volatile compounds is disclosed. The curing agent composition is prepared by mixing and reacting in aqueous solution a phenolic monomer and an aldehyde in the presence of a basic catalyst to form an intermediate resin, and reacting the intermediate resin with an amine to form the curing agent. The aldehyde to phenolic monomer molar ratio in the reaction should be at least about 1.0:1. The preferred amine is hexamethylenetetramine, and it is preferred that the hexamethylenetetramine to phenolic monomer molar ratio is at least about 0.12:1. The curing agent releases minimal volatile compounds when used to cure novolac resins, and unlike conventional resole curing agents, has an indefinite shelf life in both the pure form and when blended with a novolac resin.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: May 27, 2003
    Assignee: Plastics Engineering Company
    Inventors: Phillip A. Waitkus, Theodore N. Morrison
  • Patent number: 6509392
    Abstract: No-bake foundry binders that produce foundry shapes with improved hot strength are provided. The binder comprises a polyether polyol component, a polyisocyanate component and a catalyst component that promotes the trimerization of polyisocyanates to polyisocyanurates. Supplemental catalysts that promote the reaction of the isocyanate with the polyols may also be used. Foundry mixes are prepared by mixing the binder with a foundry aggregate and making foundry shapes using the no-bake process.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: January 21, 2003
    Assignee: H.A. International LLC
    Inventors: Satish S. Jhaveri, Frank Mancina, Anita F. Aranha, Calvin K. Johnson
  • Patent number: 6479567
    Abstract: This invention relates to furan no-bake foundry binders comprising (a) furfuryl alcohol and/or a reactive furan resin, (b) an activator selected from the group consisting of resorcinol, resorcinol pitch, and bisphenol A tar (c) a bisphenol compound (d) a polyol selected from the group consisting of polyester polyols, polyether polyols, and mixtures thereof, and preferably (e) a silane. The binders are cured in the presence of the furan curing catalyst. The invention also relates to foundry mixes prepared with the binder, foundry shapes prepared with the foundry mix, and metal castings prepared with the foundry shapes.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: November 12, 2002
    Assignee: Ashland Inc.
    Inventor: Ken K. Chang
  • Patent number: 6391942
    Abstract: This invention relates to furan no-bake foundry binders comprising (a) a reactive furan resin, (b) furfuryl alcohol, and (c) a catalyst component comprising a catalytically effective amount of a Lewis acid furan catalyst. The invention also relates to foundry mixes prepared with the binder, foundry shapes prepared with the foundry mix, and metal castings prepared with the foundry shapes.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: May 21, 2002
    Assignee: Ashland Inc.
    Inventors: Ken K. Chang, David A. Hutchings
  • Patent number: 6291550
    Abstract: This invention relates to a solventless polyurethane no-bake foundry binder system comprising, as individual components (a) a polyol component comprising a polyether polyol, glycol, and an aromatic polyester polyol, (b) an organic polyisocyanate component, and (c) a liquid tertiary amine catalyst component. Foundry mixes are prepared by mixing the binder system with a foundry aggregate by a no-bake process. The resulting foundry shapes are used to cast metal parts from ferrous and non-ferrous metals.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: September 18, 2001
    Assignee: Ashland Inc.
    Inventors: Chia-hung Chen, Ken K. Chang
  • Patent number: 6063833
    Abstract: This invention relates to a solventless polyurethane no-bake foundry binder system comprising, as individual components (a) a polyol component comprising a polyether polyol, glycol, and an aromatic polyester polyol, (b) an organic polyisocyanate component, and (c) a liquid tertiary amine catalyst component. Foundry mixes are prepared by mixing the binder system with a foundry aggregate by a no-bake process. The resulting foundry shapes are used to cast metal parts from ferrous and non-ferrous metals.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: May 16, 2000
    Assignee: Ashland Inc.
    Inventors: Chia-hung Chen, Ken K. Chang
  • Patent number: 6046252
    Abstract: 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: Grant
    Filed: February 25, 1997
    Date of Patent: April 4, 2000
    Assignee: Borden Chemical, Inc.
    Inventor: Arthur H. Gerber
  • Patent number: 5925691
    Abstract: Binder compositions for a mold each comprising a specific alkaline phenol-aldehyde resin are disclosed. Methods for producing a mold using any of the binder compositions are also disclosed.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: July 20, 1999
    Assignee: Kao Corporation
    Inventors: Hitoshi Funada, Akira Yoshida, Wataru Mizuno, Naoki Kyochika
  • Patent number: 5910521
    Abstract: There is provided a composition that is the product of mixing and reaction a resole, an alcoholate of an amino triazine, and aldehyde. This composition is useful as a thermosetting resin. This composition is useful as a curative for novolac resins. There is also provided a process for making this composition. In particular there is a process disclosed for making this composition in aqueous solution. Furthermore, curable novolac compositions, and processes for making these compositions, are disclosed and claimed.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: June 8, 1999
    Assignee: Borden Chemical, Inc.
    Inventors: Calvin K. Johnson, Jimmy Pingao Chen
  • Patent number: 5760104
    Abstract: A binder solution of a phenolic novolak resin in solvent, preferably furfuryl alcohol containing at least one chemical agent such as amines containing one to five, preferably two to four, nitrogen atoms, glycerine or mixtures thereof. Preferably, the binder solution contains about 0.2 to about 1.5 weight percent water. The binder solution is for binding refractory objects, preferably those containing doloma (calcined dolomite) aggregate. Methods of mixing these ingredients and using the mixture are also disclosed. Bricks made from the doloma aggregate mixed with the binder solution show good ambient temperature green strength and enhanced modulus of rupture after curing and coking.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: June 2, 1998
    Assignee: Borden Chemical, Inc.
    Inventor: Arthur Harry Gerber
  • Patent number: 5648404
    Abstract: 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: Grant
    Filed: April 11, 1994
    Date of Patent: July 15, 1997
    Assignee: Borden Inc.
    Inventor: Arthur Harry Gerber
  • Patent number: 5567743
    Abstract: 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: Grant
    Filed: May 12, 1995
    Date of Patent: October 22, 1996
    Assignee: Asland Inc.
    Inventors: Andrew D. Busby, Philip Vernon
  • Patent number: 5459178
    Abstract: This invention relates to foundry mixes and their uses. The foundry mixes comprise (a) a foundry aggregate, and (b) a foundry binder comprising in admixture; (1) an acetoacetate ester; (2) an .alpha., .beta. ethylenically unsaturated monomer; and (3) a liquid tertiary amine catalyst having a pK value of 12-14. The foundry mixes are used to prepare foundry shapes made from foundry mixes by a no-bake process.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: October 17, 1995
    Assignee: Ashland Inc.
    Inventors: Paul S. L. Chan, Satish S. Jhaveri, W. Graham Carpenter
  • Patent number: 5378793
    Abstract: This invention relates to a hardener for producing phenolic resins from phenolic resoles which comprises a partial phosphate ester. The hardener is produced by reacting condensed phosphoric acids with polyols at controlled temperatures with vigorous agitation under vacuum until constant acidity is achieved. The hardeners cure the phenolic resoles relatively slowly and therefore enable better control to be achieved when preparing moulded products.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: January 3, 1995
    Assignee: BP Chemicals Limited
    Inventor: Murray R. Orpin
  • Patent number: 5346942
    Abstract: 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: Grant
    Filed: March 22, 1993
    Date of Patent: September 13, 1994
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Takashi Yamamura, Ryosuke Nakamura, Hiroshi Kiriyama
  • Patent number: 5294648
    Abstract: A binder composition for producing articles of bonded particulate material such as foundry molds or core comprises an alkaline aqueous solution of a resol phenol-aldehyde resin, an oxyanion which can form a stable complex with the resin, and an ethylene glycol monoalkyl 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 ad 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: Grant
    Filed: January 4, 1993
    Date of Patent: March 15, 1994
    Assignee: Foseco International Limited
    Inventors: Garry Smith, Martin Bradley
  • Patent number: 5218010
    Abstract: 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: Grant
    Filed: September 10, 1992
    Date of Patent: June 8, 1993
    Assignee: Borden, Inc.
    Inventor: Arthur H. Gerber
  • Patent number: 5214079
    Abstract: 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: Grant
    Filed: September 10, 1992
    Date of Patent: May 25, 1993
    Assignee: Borden, Inc.
    Inventor: Arthur H. Gerber
  • Patent number: 5208274
    Abstract: 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: Grant
    Filed: September 10, 1992
    Date of Patent: May 4, 1993
    Assignee: Borden, Inc.
    Inventor: Arthur H. Gerber
  • Patent number: 5198478
    Abstract: 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: Grant
    Filed: February 11, 1992
    Date of Patent: March 30, 1993
    Assignee: Foseco International Limited
    Inventors: Garry Smith, Martin Bradley
  • Patent number: 5189079
    Abstract: A resin is prepared by the reaction of a phenol, an aldehyde and an aliphatic hydroxy compound containing two or more hydroxy groups per molecule in the presence of a divalent metal ion catalyst. These resins react with polyisocyanates to form polyurethanes that are useful binders for foundry cores and molds.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: February 23, 1993
    Assignee: Acme Resin Corp.
    Inventors: Michael M. Geoffrey, Robert A. Laitar
  • Patent number: 5077323
    Abstract: A process for improving the flowability of resin coated sand which comprises the use of a flow promoter with the mixture of sand and resin. Also provided is a foundry mix comprising foundry sand, a resin binder and the flow promoter, as well as a process for making foundry cores and molds using the foundry mix. The resins are ester-curable alkaline phenolic resole resins. The flow promoter is selected from the group consisting of fatty acids, fatty alcohols, fatty amines, fatty amides and fatty alkanolamides.
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: December 31, 1991
    Assignee: Acme Resin Corporation
    Inventors: Calvin K. Johnson, Richard C. Cooke, Jr., David R. Armbruster
  • Patent number: 5032642
    Abstract: A phenolic resin composition comprises an ester-curable phenol-aldehyde resin in alkaline aqueous solution wherein the phenol-aldehyde resin is a methylolated phenolic novolak resin. Preferably, during manufacture of the methylolated phenolic novolak resin, unreacted phenol is removed. The composition may be employed, for reaction with an organic ester hardener, as a binder in the production of foundry moulds and cores having high strength. The further incorporation of an aryloxy alcohol in the novolak resin binder additionally improves the final strength of products obtained by a gas curing technique using ester vapor, such as that of methyl formate.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: July 16, 1991
    Assignee: Borden, Inc.
    Inventors: Peter H. R. B. Lemon, Derek W. Baker, John Ireland
  • Patent number: 5021539
    Abstract: 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: Grant
    Filed: March 24, 1989
    Date of Patent: June 4, 1991
    Assignee: Acme Resin Corporation
    Inventors: David R. Armbruster, Merlyn C. Pasion
  • Patent number: 4929648
    Abstract: A binder composition which comprises an aqueous alkaline solution of a phenolic resole resin and an additive wherein the additive is phenoxyethanol or a derivative of phenoxyethanol.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: May 29, 1990
    Assignee: Acme Resin Corporation
    Inventors: David R. Armbruster, Kwok-Tuen Tse
  • Patent number: 4862948
    Abstract: An adhesive paste for adhering two or more objects, a composite assembly comprising two or more elements bonded by such paste, and a process for preparing cast metal articles using such paste are provided. The adhesive paste comprises an aqueous solution of a specific alkali phenol-formaldehyde resin and a hardener for that resin, wherein the paste prepared by mixing the resin and hardener has a viscosity, as mixed, in the range of about 1,000 cps to about 15,000 cps. The composite assembly comprises at least two separate elements bonded by the adhesive paste of the invention. The process uses a mold or core assembly having at least two separate elements.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: September 5, 1989
    Assignee: Borden, Inc.
    Inventor: Robert A. Laitar
  • Patent number: 4848442
    Abstract: An alkoxy-modified phenolic resole resin providing an improved binder for foundry cores and molds. The resin has predominantly ortho-ortho benzylic ether bridges joining the phenolic nuclei in the resin and at least one alkoxymethylene group for every 20 phenolic nuclei.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: July 18, 1989
    Assignee: Acme Resin Corporation
    Inventors: Raja Iyer, Rasik C. Shah, Robert A. Laitar
  • Patent number: 4780489
    Abstract: The subject invention relates to modifiers for aqueous basic solutions of phenolic resins. The modifiers are open-chain ether alcohols or ketone alcohols. They assist in stabilizing the aqueous basic solutions of phenolic resole resins and improve the tensile strength of foundry shapes prepared from foundry mixes made with the aqueous basic solutions.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: October 25, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: William R. Dunnavant, Robert B. Fechter, Gary R. Hysell, Young D. Kim, Heimo J. Langer
  • Patent number: 4735973
    Abstract: An additive to foundry sand molding and core aggregates used to produce cores and molds which improves the quality of castings by reducing thermal expansion and gas defects. The additive comprises a composition containing from about 15% to about 95% titanium dioxide (TiO.sub.2). Preferably, the composition of the additive comprises about 2-38% silicon dioxide (SiO.sub.2), about 5-40% ferric oxide (Fe.sub.2 O.sub.3), about 15-95% titanium dioxide (TiO.sub.2), and about 2-45% aluminum oxide (Al.sub.2 O.sub.3).
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: April 5, 1988
    Inventor: John J. Brander
  • Patent number: 4732920
    Abstract: An improved particulate material for use in treating subterranean formations as a proppant and/or as a fluid loss agent in hydraulic fracturing and as a screening material in gravel packing comprised of heat curable particles capable of forming a cohesive mass, said particles comprised of a high strength center, a coupling agent chemically bound to the center with a heat curable resin coated over the center.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: March 22, 1988
    Inventors: John W. Graham, A. Richard Sinclair
  • Patent number: 4657950
    Abstract: Refractory shaped articles are prepared by heating refractory mixes comprised of refractory particles and an alkoxy modified phenolic resole resin having at least one alkoxy methylene group for every 20 phenolic hydroxyl groups.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: April 14, 1987
    Assignee: Acme Resin Corporation
    Inventors: Raja Iyer, Rasik C. Shah, Robert A. Laitar
  • Patent number: 4644022
    Abstract: A cold-setting foundry binder composition, which provides foundry cores and molds with improved curing speed, comprising a particulate refractory material, a resin binder, an acid curing catalyst, and an accelerator. The accelerator is selected from the group: dihydroxybenzenes, derivatives of dihydroxybenzenes, trihydroxybenzenes, and their mixtures.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: February 17, 1987
    Assignee: Acme Resin Corporation
    Inventor: Raja Iyer
  • Patent number: 4600733
    Abstract: A disintegration assistant is added to a molding composition made up of foundry sand and a binder whose major part is a condensation-reactive compound or resin having methylol groups in a molecule. The molding composition is formed into a mold and a core by solidifying the resin so that individual grains of the foundry sand are bound each other. The disintegration assistant is mainly made of calcium hydroxide, calcium carbonate, barium hydroxide and/or barium carbonate, thereby promoting the heat deterioration of the resin to improve the disintegration characteristics of the mold and the core.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: July 15, 1986
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Keizi Ohashi, Kazuo Takahashi
  • Patent number: 4597991
    Abstract: A method for producing an improved particulate material for use in treating subterranean formations as a proppant and/or as a fluid loss agent in hydraulic fracturing and as a screening material in gravel packing comprised of heat curable particles capable of forming a cohesive mass, said particles comprised of a high strength center, a coupling agent chemically bound to the center with a heat curable resin coated over the center.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: July 1, 1986
    Inventors: John W. Graham, A. Richard Sinclair
  • Patent number: 4529751
    Abstract: A phenolic resin for application in foundry shell molding operations having improved properties is disclosed. The phenolic resin is prepared by reacting aldehydes and a mixture of bisphenol A and bisphenol F to prepare a phenolic resin for coating foundry aggregates or sand to prepare shell molds having low thermal expansion and improved shake out properties.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: July 16, 1985
    Assignee: Sumitomo Durez Company, Ltd.
    Inventor: Yukio Saeki
  • Patent number: 4501836
    Abstract: A polymeric binder composition for refractory aggregates is disclosed. The binder is a resole type phenolic resin, solvent and a tar, pitch or mixtures thereof. The solvent has a boiling point of greater than 75.degree. C. and is added to the resole type phenolic resin to impart a viscosity range of between 1 to 1000 poise. The tar/pitch component is combined in the solvent-resin mixture, and is incorporated within the ratios of 30:70 to 70:30 with relation to the phenolic resin. The binder results in a high carbon binder.
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: February 26, 1985
    Assignee: Sumitomo Durez Company, Ltd.
    Inventors: Masayuki Nakamura, Masaaki Tsuriya, Masahiko Funabashi
  • Patent number: RE34228
    Abstract: 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: Grant
    Filed: March 2, 1992
    Date of Patent: April 20, 1993
    Assignee: Acme Resin Corp.
    Inventors: David R. Armbruster, Merlyn C. Pasion