Naphthenic Acid Or Derivative Patents (Class 524/286)
  • Patent number: 8932483
    Abstract: A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a flow modifier is provided. The flow modifier is an aromatic carboxylic acid that contains one or more carboxyl functional groups. Without intending to be limited by theory, it is believed that the functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. It is also believed that such acids can combine smaller chains of the polymer together after they have been cut during processing. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. As a result of the present invention, the melt viscosity of the thermoplastic composition is generally low enough so that it can readily flow into the cavity of a mold having small dimensions.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: January 13, 2015
    Assignee: Ticona LLC
    Inventor: Young Shin Kim
  • Patent number: 8926862
    Abstract: A thermoplastic composition that comprises a low-naphthenic, thermotropic liquid crystalline polymer blended with a combination of flow modifiers is provided. More particularly, one of the flow modifiers is a hydroxy-functional compound that contains or more hydroxyl functional groups. Without intending to be limited by theory, it is believed that the hydroxyl functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. Aromatic dicarboxylic acids are also employed as a flow modifier in the thermoplastic composition. Again, without intending to be limited by theory, it is believed that such acids can combine smaller chains of the polymer together after they have been cut by hydroxy-functional compounds. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: January 6, 2015
    Assignee: Ticona LLC
    Inventors: Young Shin Kim, Xinyu Zhao
  • Patent number: 8906259
    Abstract: A thermoplastic composition that comprises a naphthenic-rich, thermotropic liquid crystalline polymer blended with a flow modifier is provided. The flow modifier is an aromatic carboxylic acid that contains or more carboxyl functional groups. Without intending to be limited by theory, it is believed that the functional groups can react with the polymer chain to shorten its length and thus reduce melt viscosity. It is also believed that such acids can combine smaller chains of the polymer together after they have been cut during processing. This helps maintain the mechanical properties of the composition even after its melt viscosity has been reduced. As a result of the present invention, the melt viscosity of the thermoplastic composition is generally low enough so that it can readily flow into the cavity of a mold having small dimensions.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 9, 2014
    Assignee: Ticona LLC
    Inventor: Young Shin Kim
  • Publication number: 20140256862
    Abstract: Waterborne coatings are described having an acceptable balance of properties both during the storage of coating, application and drying. The period in which irregularities in a freshly applied coating can be repaired without resulting in brush marks is referred to as the open time. Aqueous coatings generally employ dispersed high molecular weight polymers as binders. These binders often provide short open times when the coating is dried since the dispersed polymer particles tend to be immobilized quickly in the edge region of an applied coating. As a result, the viscosity of the coating increases rapidly, which leads to a limited window of workability. The instant invention provides additives that are not volatile but that will extend the time that the film is malleable after after it is applied without interfering with other attributes, such as the resistance of the coating to freezing while in the can prior to application.
    Type: Application
    Filed: March 10, 2013
    Publication date: September 11, 2014
    Inventors: Charles Francis Palmer, JR., Lester Arnold Haney, II, Calvin M. Wicker, JR.
  • Publication number: 20140179845
    Abstract: Provided are compounds and processes of making compounds of the formula: wherein x=4 to 8, R is H, C1 to C4 alkyl, —C(O)OR1 or —OC(O)R1, y=4 to 8, R? is H, C1 to C4 alkyl, and at least one R? is —C(O)OR1 or —OC(O)R1, wherein R1 is a branched C4 to C14 alkyl, and their use in polymer compositions.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Jihad Mohammed Dakka, Edmund John Mozeleski, Lisa Saunders Baugh, Stephen Zushma
  • Publication number: 20130122758
    Abstract: A thermoplastic composition for use in a fine pitch electrical connector is provided. The thermoplastic composition contains a liquid crystalline polymer and a plurality of fibers. The volume average length of the fibers in the thermoplastic composition is selectively controlled according to the present invention so that it is within a certain range, such as from about 80 to about 250 micrometers. The fibers also have a narrow length distribution. That is, at least about 70% by volume of the fibers have a length within a certain range. Through the use of a liquid crystalline polymer and fibers of a certain weight average length and narrow length distribution, the present inventors have discovered that the resulting thermoplastic composition is able to achieve a desirable combination of strength and flowability, which enables it to be uniquely suited for the walls of a fine pitch connector.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 16, 2013
    Applicant: TICONA LLC
    Inventor: Ticona LLC
  • Publication number: 20130046047
    Abstract: Disclosed is a saponified polymer-containing composition containing a saponified polymer (A), which is obtained by alkaline saponification of an ethylene-unsaturated carboxylic acid random copolymer, and a dimer acid (B).
    Type: Application
    Filed: April 19, 2011
    Publication date: February 21, 2013
    Applicant: DU PONT-MITSUI POLYCHEMICALS CO., LTD.
    Inventors: Kenichi Date, Yoichi Shinya, Tadashi Kimura
  • Publication number: 20120208118
    Abstract: Environmentally friendly resin particles are provided which include a monomer having a color, which is able to impart color to the resulting resin. The resulting resin may be used to form various articles, including toner. A toner of the present disclosure may thus include the bio-based polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these resins are also provided.
    Type: Application
    Filed: February 14, 2011
    Publication date: August 16, 2012
    Applicant: XEROX CORPORATION
    Inventor: Valerie M. Farrugia
  • Publication number: 20110091771
    Abstract: This invention relates to a coating formulation, a coating formulation for manufacturing an electrode plate and an undercoating formulation, and their use. These coating formulations are all characterized by containing, in a polar solvent, a hydroxyl-containing resin and an organic acid and/or a derivative thereof. The hydroxyl-containing resin is at least one of (1) a polyvinyl acetal resin, (2) an ethylene-vinyl alcohol copolymer, (3) a modified and/or unmodified polyvinyl alcohol, and (4) a cyanoethyl-containing polymer. According to the present invention, there is provided a coating formulation capable of forming a coating of excellent adhesion and solvent resistance on a surface of a metal material such as an aluminum material.
    Type: Application
    Filed: May 28, 2009
    Publication date: April 21, 2011
    Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Takanori Sannan, Shinya Tsuchida, Nobuyuki Kobayashi, Shinichiro Aoyagi
  • Publication number: 20100152346
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: January 25, 2010
    Publication date: June 17, 2010
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Publication number: 20100113655
    Abstract: There is provided high temperature flame retarded semiaromatic polyamides which provide superior properties in molded articles while maintaining high flow in the molding process. The resin compositions include, in addition to the polyamide and flame retardant, aromatic organic acid and at least one inorganic reinforcing agent and/or filler. Processes for their preparation and articles made from these compositions are also disclosed.
    Type: Application
    Filed: October 21, 2009
    Publication date: May 6, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Yuji Saga
  • Patent number: 7585909
    Abstract: Disclosed herein are p-urea phenyl derivatives of the formula: wherein R1 and R2 are independently selected hydrocarbyl groups. These derivatives are useful as haze reducing agents in propylene polymers and copolymers.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: September 8, 2009
    Assignee: Chemtura Corporation
    Inventors: Qinggao Ma, William A. Wortman, Abuzar Syed, Paul E. Stott, John M. Wefer, David J. Sikora
  • Patent number: 7153895
    Abstract: Disclosed are methods for the formation of a rubber/filler/curative/plasticizer compacted masterbatch which may be performed in two ways. In one embodiment, a rubber and a filler are intimately mixed for a time and under shear conditions sufficient to form a free flowing associated composition, then the composition is mixed with a plasticizer and a curative to form the compacted masterbatch. Alternatively, the starting material may be an already-formed free flowing associated composition of rubber, filler and optional curative, which is mixed with a plasticizer and optional curative to form the compacted masterbatch.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: December 26, 2006
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Joseph M. Hochheiser, Emmanuel G. Kontos, Richard W. Tomlinson
  • Patent number: 6753365
    Abstract: A composition useful in the manufacturing of plastic cookware includes a polyetherimide resin and an acidic additive selected from the group consisting of aliphatic carboxylic acids having a vapor pressure less than one atmosphere at 300° C., aromatic carboxylic acids having a vapor pressure less than one atmosphere at 300° C., and combinations comprising at least one of the foregoing acidic additives. In one embodiment, the composition further comprises an additional resin, such as a polyester resin. The acidic additive is effective in improving the mold release and increasing the melt flow of the composition. Articles including the composition and a method for preparing the composition are also described.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: June 22, 2004
    Assignee: General Electric Company
    Inventors: Sterling Bruce Brown, Jennifer L. David, Robert Russell Gallucci, Yimin Jin, Martin J. Lindway
  • Patent number: 6703434
    Abstract: The present invention relates to methods of producing syndiotactic polypropylene articles through high performance nucleation via the presence of certain novel nucleating agents within molten syndiotactic resins, and subsequently permitting the resultant molten mixture to cool into a selected shape or configuration. Such novel nucleating agents are new classes of hyper-nucleators that promote crystallization within such target syndiotactic resins at levels well above any previously disclosed nucleators. This invention thus also encompasses the articles and compositions of such nucleated syndiotactic polypropylene as well.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: March 9, 2004
    Assignee: Milliken & Company
    Inventor: Darin L. Dotson
  • Patent number: 6642290
    Abstract: The present invention relates to methods of producing syndiotactic polypropylene articles through high performance nucleation via the presence of certain novel nucleating agents within molten syndiotactic resins, and subsequently permitting the resultant molten mixture to cool into a selected shape or configuration. Such novel nucleating agents are new classes of hyper-nucleators that promote crystallization within such target syndiotactic resins at levels well above any previously disclosed nucleators. This invention thus also encompasses the articles and compositions of such nucleated syndiotactic polypropylene as well.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: November 4, 2003
    Assignee: Milliken & Company
    Inventor: Darin L. Dotson
  • Publication number: 20030073764
    Abstract: Certain thermoplastic additives (combinations of clarifying and nucleating compounds) that induce simultaneously low clarity and high nucleation efficacy are provided. Such additives include combinations of certain bicyclic salts (which by themselves induce very high nucleation efficacy) and thermoplastic clarifying agents, including certain dibenzylidene sorbitol acetals and derivatives (hereinafter collectively referred to as “DBSs”)(which alone provide very low haze measurements and thus highly desirable clarity characteristics). In comparison, other types of standard thermoplastic nucleators, such as sodium benzoate and sodium 2,2′-methylene-bis-(4,6-di-tert-butylphenyl) phosphate provide relatively high peak crystallization temperatures, but do not combine synergistically with clarifiers, such as DBSs, to provide the same results as for the inventive combination of bicyclic salts and DBSs.
    Type: Application
    Filed: August 11, 2001
    Publication date: April 17, 2003
    Inventor: Xiaodong Edward Zhao
  • Patent number: 6359064
    Abstract: A process for forming an elastomeric polymer gel composition includes forming a blend by combining a poly(alkenyl-co-maleimide) that includes a maleimide and at least one monomer contributed unit derived from vinyl aromatic hydrocarbons, R1R2 ethylenes, and alkyl vinyl ethers; with a maleated polyalkylene. This is followed by addition of a crosslinking agent, which is allowed to react with the poly(alkenyl-co-maleimide) and maleated polyalkylene to form a polyalkyenyl grafted poly(alkenyl-co-maleimide). The polyalkenyl grafted poly(alkenyl-co-maleimide) is further blended with a polyester.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: March 19, 2002
    Assignee: Bridgestone Corporation
    Inventors: Xiaorong Wang, James E. Hall
  • Patent number: 6114424
    Abstract: The present invention relates to opalescent cosmetic compositions that are stable and suitable for topical application to human skin, and to methods for preparing and using such compositions. The compositions of the invention include (1) a hydrogenated indene-styrene-vinyltoluene polymer in an amount from about 0.1% by weight to about 50% by weight of the composition and (2) a carrier material in an amount from about 50% by weight to about 99.9% by weight of the composition. The opalescent composition may further contain a cosmetic material in an amount from about 0.5% by weight to about 20% by weight of the composition.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: September 5, 2000
    Assignee: Estee Lauder, Inc.
    Inventors: Konstantinos M. Lahanas, Daniela Toma, Gheorghe Cioca
  • Patent number: 5993532
    Abstract: A stabilized solution of hydrogen silsesquioxane resin is disclosed. The solution comprises 100 parts by weight solvent, 0.1 to 100 parts by weight hydrogen silsesquioxane resin, and 0.002 to 4 parts by weight acid. These solutions are useful for forming coatings on substrates.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: November 30, 1999
    Assignees: Dow Corning Corporation, Dow Corning Toray Silicone Co., Ltd.
    Inventors: Dennis William Broderick, James Anthony Helwick, Takashi Nakamura
  • Patent number: 5654354
    Abstract: A non-photoformable composition for use as the first unpatterned layer in a diffusion patterning process consisting essentially of:A. a film-forming solid organic polymer having no free acid groups containing a plurality of acid liable groups which are acid reactive;B. a plasticizer in which the solid organic polymer is incompletely soluble;C. volatile organic solvent, the ratio of polymer to plasticizer being such that when the volatile organic solvent is removed from the organic medium, the resulting solvent-free polymer/plasticizer dispersion is specularly nonreflective; andD. finely divided particles of dielectric solids.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: August 5, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John James Felten, Walter Raymond Hertler, Sheau-Hwa Ma
  • Patent number: 5373041
    Abstract: A pressure sensitive adhesive composition which can be applied by hot melt techniques to one surface and adhered to a second surface by contact at ambient temperature, to thereby bond the two surfaces together. The adhesive composition is made of certain ethylene/n-butyl acrylate copolymers together with tackifier and optionally, plasticizer.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: December 13, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George W. Prejean
  • Patent number: 5104912
    Abstract: An aqueous polymeric gel-forming composition which slowly crosslinks to form stable gels for plugging highly permeable zones in subterranean oil-bearing formations. The composition comprises an aqueous solution of a water-dispersible polymer present in a viscosifying amount and a crosslinking agent present in an amount effective to cause gelation of the polymeric solution which comprises a mixture of an aldehyde and a member selected from the group consisting of phenolic esters, naphtholic esters, halogenated phenolic esters and halogenated naphtholic esters.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: April 14, 1992
    Assignee: Mobil Oil Corporation
    Inventor: Dennis H. Hoskin
  • Patent number: 5070126
    Abstract: A film easily soluble in cold water comprises a water-soluble copolymer composed of 6 to 40 mol % of an allyl ester moiety and 94 to 60 mol % of a vinyl ester moiety and having a degree of sponification of not less than 65 mol %. The film is easily soluble in cold water and such solubility in cold water is not lowered even if it comes into contact with either alkaline or acidic materials and it can suitably used as wrapping material for packages which are directly thrown into water together with packed materials.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: December 3, 1991
    Assignee: Aicello Chemical Co., Ltd.
    Inventors: Shigekazu Toyonishi, Takashi Nakajima
  • Patent number: 5063268
    Abstract: A composition suitable for use in producing tire treads, is provided. The composition comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene; a rubber, such as, styrene-butadiene rubber, carbon black, and a plasticizer oil. Tires comprising treads made of the composition are also provided.
    Type: Grant
    Filed: June 8, 1990
    Date of Patent: November 5, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Donald G. Young
  • Patent number: 5026744
    Abstract: A nontacky, shock absorbing rubber composition suitable for replacing the natural clay used in horseshoe pits to absorb the energy of a thrown horseshoe, said composition comprising butyl rubber, crosslinked butyl rubber, cellulose fibre, particulate filler and plasticizer.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: June 25, 1991
    Assignee: Polysar Limited
    Inventor: Keith A. Callander
  • Patent number: 4797440
    Abstract: A composition comprising a dispersion of a finely divided particulate solid in a thermoplastic polymeric organic medium in the presence of a lubricant and a processing additive in which the processing additive comprises an organic compound containing at least one group of the formula:--O--A--CO--wherein A is a divalent aliphatic radical containing 17 carbon atoms, at least 4 of which are directly between the oxygen atom and the carbonyl group.The composition is suitable for blending a particulate solid into a polymer.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: January 10, 1989
    Assignee: Imperial Chemical Industries PLC
    Inventors: John D. Schofield, Roger Slater
  • Patent number: 4788232
    Abstract: Resinous pigment concentrates comprising at least one pigment and a dispersing additive of a naphthenic extender oil and/or a phosphate ester blended with a major portion of a resinous polymer containing a significant proportion of at least one polymerized conjugated diene monomer, when used for coloring resinous polymers as described, are effective in reducing such defects in finished articles as gels and surface blemishes.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: November 29, 1988
    Assignee: Phillips Petroleum Company
    Inventor: Donald G. Needham
  • Patent number: 4761444
    Abstract: An elastomeric blend composition having improved tear properties and having a viscosity at 0.73 sec.sup.-1 and at 200.degree. C. of about 8.times.10.sup.3 to about 8.times.10.sup.5 poises, said composition formable into an elastomeric article, which comprises:(a) a neutralized sulfonated EPDM terpolymer having a viscosity at 0.73 sec.sup.-1 and at 200.degree. C. of about 5.times.10.sup.4 poises to about 5.times.10.sup.6 poises and about 10 to about 50 meq. sulfonate groups per 100 grams of said sulfonated EPDM terpolymer, said sulfonate groups being neutralized; and(b) about 2 to about 60 parts by weight of a fluorohydrocarbon elastomer per 100 parts of such sulfonated EPDM terpolymer.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: August 2, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Pawan K. Agarwal, William M. Petrik, Richard T. Garner
  • Patent number: 4720514
    Abstract: Resinous pigment concentrates comprising at least one pigment and a dispersing additive of a naphthenic extender oil and/or a phosphate ester blended with a major portion of a resinous polymer containing a significant proportion of at least one polymerized conjugated diene monomer, when used for coloring resinous polymers as described, are effective in reducing such defects in finished articles as gels and surface blemishes.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: January 19, 1988
    Assignee: Phillips Petroleum Company
    Inventor: Donald G. Needham
  • Patent number: 4699975
    Abstract: A readily crystallizable arylenesulfide resin composition is produced by adding, to 100 parts by weight of an arylenesulfide polymer, 0.01 to 10.0 parts of an organic acid or organic acid anhydride having a high boiling or melting point such as 2,6-naphthalene dicarboxylic acid, and then heating the mixture to a temperature not lower than the melting point of the polymer. The resulting resin composition is characterized in that its crystallization from its glass state and molten state is very rapid, in that it forms very fine spherulite structures, and in that it has a high degree of crystallization, a very crystallizable character, and other desirable characteristics.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: October 13, 1987
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takayuki Katto, Yukio Ichikawa
  • Patent number: 4600736
    Abstract: Resinous pigment concentrates comprising at least one pigment and a dispersing additive of a naphthenic extender oil and/or a phosphate ester blended with a major portion of a resinous polymer containing a significant proportion of at least one polymerized conjugated diene monomer, when used for coloring resinous polymers as described, are effective in reducing such defects in finished articles as gels and surface blemishes.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: July 15, 1986
    Assignee: Phillips Petroleum Company
    Inventor: Donald G. Needham
  • Patent number: 4568728
    Abstract: A foundry binder for preparing shaped foundry products, said binder having improved breakdown, which binder comprises:(a) a resin component organic resin alkyd resins, furan resins, shell phenolic resins or acid setting phenolic resin and(b) a catalystic amount of a metal drier.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: February 4, 1986
    Assignee: Delta Resins & Refractories
    Inventors: Jordan J. Kopac, Arek Khachaturian
  • Patent number: 4412030
    Abstract: Resins suitable for adhesives are based on .alpha.-methyl styrene, styrene and phenol in certain percentages, viz. 25 to 63, 35 to 73 and 2 to 15 percent by weight, respectively.Combinations of resin, ethylene vinyl acetate copolymer, atactic polypropylene, ethyl acrylate copolymer or a thermoelastomer and optionally a wax or tackifying oil yield excellent adhesives, in particular hot-melt adhesives.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: October 25, 1983
    Assignee: National Starch and Chemical Corporation
    Inventors: Yves Runavot, Georges Billault, Jaques Salvetat
  • Patent number: 4379867
    Abstract: A writing medium capable of being erased by merely mechanically rubbing with an ordinary pencil eraser after writing and capable of forming a drawing line possessing high adhering strength onto the surface of paper even immediately after writing on the paper. The writing medium contains a pigment as a colorant, a polynorbornane and/or trans-1,4-polyisoprene, and a mixture solvent solution for dissolving the polynorbornane and the trans-1,4-polyisoprene and containing a low boiling point organic solvent having a boiling point of less than 180.degree. C. and a high vaporization rate and operating as a plasticizer for the polynorbornane and the trans-1,4-polyisoprene and a high boiling point organic solvent having a boiling point of higher than 300.degree. C. and a low vaporization rate. Thus, a drawing line written with the writing medium can be erased merely by rubbing with the eraser within several hours after writing, and is not erased thereafter.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: April 12, 1983
    Inventor: Tsunoda Noriaki
  • Patent number: 4377650
    Abstract: Pigment is finely dispersed in hydrolyzed ethylene-vinyl acetate copolymer by subjecting the copolymer to which pigment has previously been added by simple, non-intensive mixing to solution hydrolysis and/or by adding pigment to the solution hydrolysis medium prior to or during hydrolysis of the copolymer therein.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: March 22, 1983
    Assignee: National Distillers & Chemical Corp.
    Inventor: Joseph Fischer
  • Patent number: 4374224
    Abstract: Propagation of electrical trees and water trees in electrical insulation made of ethylene homopolymers or copolymers with an unsaturated monomer is inhibited by the addition to the insulating composition of an organic carboxylic ester having at least one aromatic ring and at least three carboxylic ester groups, the ester being liquid at the operating temperature of the electrical equipment in which the insulation is used. The main utility of the inhibitors of this invention is in the primary insulation for power transmission cables, especially those used in high voltage applications.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: February 15, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John K. Beasley, Edward J. Urban
  • Patent number: 4360638
    Abstract: This invention is directed to compositions useful as ionomeric hot melt pressure sensitive adhesive compositions. These compositions comprise a polymer containing carboxylic acid, a miscible metal salt, and an o-methoxy-substituted aryl acid. These compositions display low melt viscosity, simplifyingapplication, as well as improved adhesive properties, especially shear resistance.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: November 23, 1982
    Assignee: Rohm and Haas Company
    Inventor: Benjamin Bartman
  • Patent number: 4357459
    Abstract: Resins suitable for adhesives are based on .alpha.-methyl styrene, styrene and phenol in certain percentages, viz. 25 to 63, 35 to 73 and 2 to 15 percent by weight, respectively,Combinations of resin, ethylene vinyl acetate copolymer or thermoelastomer and optionally a wax or tackifying oil yield excellent adhesives, in particular hot-melt adhesives.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: November 2, 1982
    Assignee: National Starch and Chemical Corporation
    Inventors: Yves Runavot, Georges Billault, Jacques Salvetat
  • Patent number: RE31874
    Abstract: Propagation of electrical trees and water trees in electrical insulation made of ethylene homopolymers or copolymers with an unsaturated monomer is inhibited by the addition to the insulating composition of an organic carboxylic ester having at least one aromatic ring and at least three carboxylic ester groups, the ester being liquid at the operating temperature of the electrical equipment in which the insulation is used. The main utility of the inhibitors of this invention is in the primary insulation for power transmission cables, especially those used in high voltage applications.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: April 30, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John K. Beasley, Edward J. Urban