Two Or More Separate Aryl Ring Systems Patents (Class 524/255)
  • Patent number: 6235819
    Abstract: A method for scavenging amines within polymeric compositions of matter comprising the step of adding to a polymeric composition of matter at least one triazine compound, wherein said triazine compound is defined according to the formula: where X is selected from the group consisting of hydrogen, halides, amines, and organic groups having from 1 to about 20 carbon atoms, Y is selected from the group consisting of halides, alkoxy derivatives, amine derivatives, aryloxy derivatives, and urea derivatives, with the proviso that the substituent Y is displacable by a reaction with a secondary amine, and Z is selected from the group consisting of alkoxy derivatives, amino derivatives, aryloxy derivatives, and urea derivatives, with the proviso that the substituent Z is displacable by a reaction with a secondary amine.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: May 22, 2001
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Ashley S. Hilton, John R. Schreffler, Roderic P. Quirk
  • Patent number: 6194120
    Abstract: Optical waveguides prepared by irradiating selected regions of positive photochromic polymeric materials with actinic radiation are disclosed. The photochromic materials undergo an irreversible photochemical change which results in an increase in the refractive index of light-exposed regions. In addition, the materials exhibit negligible second-order polarizability prior to exposure and excellent nonlinear optical properties after exposure and polarization. Thus, the exposed regions are particularly useful as the core in active waveguides for use in second-order nonlinear optical applications, as well as the core in passive waveguides. In addition, a simple two step process is disclosed for forming optical waveguides from the positive photochromic polymers. Optical structures, such as optical integrated circuits, and optical devices which incorporate the waveguides are also disclosed.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: February 27, 2001
    Assignee: Molecular OptoElectronics Corporation
    Inventors: Kwok Pong Chan, Brian L. Lawrence
  • Patent number: 6080929
    Abstract: The present invention is directed to an improvement in a wire or cable system comprising a wire or cable portion, an insulation composition surrounding the wire or cable portion, a filler material surrounding the insulation composition and a jacket composition surrounding the filler material wherein either the insulation composition, the jacket composition, or both comprise at least one antioxidant, wherein the improvement comprises the inclusion in the filler material of a stabilizing mixture comprising at least two antioxidants, selected from at least two members of the group consisting of:(a) metal dithiocarbamate salts,(b) amine antioxidants, and(c) sterically hindered phenolic antioxidants,wherein the stabilizing mixture is present in the filler material in an amount that is effective for the reduction of the oxidation of the cable filling material, thereby reducing deterioration of the jacket and/or insulation.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: June 27, 2000
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Christopher John Fagouri, Robert Scott Archibald
  • Patent number: 6015851
    Abstract: The present invention relates to rubber compositions containing an elastomer containing olefinic unsaturation and a bis anil compound of the formula ##STR1## where R.sup.1 and R.sup.2 may be the same or different and are independently selected from alkyls having from 1 to 5 carbon atoms and X is selected from the group consisting of H; OH; OAlk where Alk is an alkyl having from 1 to 3 carbon atoms; COOH and; COO.sup.- M.sup.+ where M is a metal selected from the group consisting of Zn, Na, Ca and Mg; and y is 0 to 2.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: January 18, 2000
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Neil Arthur Maly, Lawson Gibson Wideman, Lewis Timothy Lukich
  • Patent number: 5985417
    Abstract: An organic electroluminescent display device (10) includes a plurality of organic layers (16, 18, 20, 22 and 24) disposed between opposing electrodes (14 and 26). The hole transporting layer (22) is composed of a hole transporting material stabilized by a polymeric network.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: November 16, 1999
    Assignee: Motorola, Inc.
    Inventors: Song Shi, Franky So, H. C. Lee
  • Patent number: 5948841
    Abstract: A process for producing a stabilized oxymethylene copolymer, which comprises subjecting a crude oxymethylene copolymer to terminal stabilization in an extruder (A) having a terminal-stabilizing zone and a vacuum zone for volatile components removal to obtain a terminal-stabilized oxymethylene copolymer, separately melt-kneading a polyoxymethylene and a stabilizer and/or an additive in other extruder (B), feeding the resulting melt-kneading mixture in a molten state into a section of the extruder (A) following the vacuum zone for volatile components removal so that the proportions of the polyoxymethylene to be fed from the extruder (B) and the crude oxymethylene copolymer to be subjected to terminal stabilization in the extruder (A) become 1:3 to 1:45 by weight ratio, and kneading the polyoxymethylene, the stabilizer and/or the additive and the terminal-stabilized oxymethylene copolymer.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: September 7, 1999
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventor: Hideki Nakamura
  • Patent number: 5907129
    Abstract: There is disclosed a styrenic resin composition which comprises 70 to 99.9% by weight of an (A) styrenic polymer having a high degree of syndiotactic configuration and 0.1 to 30% by weight of a (B) organic compound having a --NH-- group and a molecular weight of less than 10,000.According to the present invention, there is obtained a styrenic resin composition having a syndiotactic configuration which is improved in electrical insulating properties, especially in withstand voltage against direct current.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 25, 1999
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Keisuke Funaki, Takaaki Uchida, Akitoshi Masuyama
  • Patent number: 5834080
    Abstract: Controllably conductive polymer compositions may be used in electrophotographic imaging developing systems, such as scavengeless or hybrid scavengeless systems or liquid image development systems. The conductive polymer compositions includes a charge-transporting material (particularly a charge-transporting, thiophene-containing polymer or an inert elastomeric polymer, such as a butadiene- or isoprene-based copolymer or an aromatic polyether-based polyurethane elastomer, that additionally comprises charge transport molecules) and a dopant capable of accepting electrons from the charge-transporting material. The invention also relates to an electrophotographic printing machine, a developing apparatus, and a coated transport member, an intermediate transfer belt, and a hybrid compliant photoreceptor comprising a composition of the invention.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: November 10, 1998
    Assignee: Xerox Corporation
    Inventors: Joseph Mort, Bing R. Hsieh, Mary A. Machonkin, Joseph Mammino, John F. Yanus
  • Patent number: 5750606
    Abstract: An aqueous fluorine-containing polymer dispersion, which comprises a fluorine-containing polymer, a nonionic surfactant and a preservative having at least one halogen atom on a carbon atom having an electron attractive group or a preservative having methylol group or methylene group and releasing formaldehyde, is provided. The above-mentioned dispersion is free of putrefying odor and suspended matters, is excellent in stability for a long period of time without pH decrease and does not generate any cissing and aggregation at the time of coating such as impregnation.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: May 12, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiro Miura, Yoshihiro Soda, Tadao Hayashi
  • Patent number: 5580913
    Abstract: A process for the homogeneous incorporation of a stabilizers into a polycondensate in which the stabilizer is first applied to a finely divided solid polycondensate and the mixture is then revolved in the solid phase of the polycondensate, at temperatures of at least 80.degree. C.Products having an improved color and stability are obtained by this mild incorporation of stabilizer.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: December 3, 1996
    Assignee: Huels Aktiengesellschaft
    Inventors: Salih Mumcu, Hasso Daebel
  • Patent number: 5492954
    Abstract: N,N,N',N'-Tetrasubstituted 1,4-diamino-2-butenes where the substituents are alkyl, cycloalkyl, aralkyl, aryl or mixtures thereof provide effective antioxidant protection to lubricants and/or synthetic polymers.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: February 20, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Joseph E. Babiarz, Glen T. Cunkle, Werner Rutsch
  • Patent number: 5489711
    Abstract: An oligomer from diarylamines is disclosed which has desirable antioxidant properties in lubricating oils which contain synthetic ester lubricants. The oligomer is desirable for use at higher temperatures where it has less volatility than simple diarylamines. The oligomer has substantial portions of monosubstituted diphenylamine repeat units which result in linear oligomers. Di and polysubstituted diphenylamines may optionally be present as repeat units. These di and polysubstituted diphenylamines generally react as monofunctional reactants in oligomerization and tend to reduce the number of repeat units in the average oligomer.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: February 6, 1996
    Assignee: The B. F. Goodrich Company
    Inventor: John T. Lai
  • Patent number: 5476891
    Abstract: A flexible, fire-retardant, intumescent composition comprising:a) an intumescent material;b) an effective amount of a stabilizing agent; andc) an organic binder throughout which the intumescent material and stabilizing agent are dispersed, the elastomeric binder being at least partially crosslinked, wherein the stabilizing agent consists essentially of a compound selected from the group consisting of compounds within general formula I ##STR1## wherein R.sup.1 -R.sup.4 inclusive are independently selected from the group consisting of hydrogen and alkyl groups having from 1 to about 5 carbon atoms, with the provisos that:i) either both of R.sup.1 and R.sup.2, or both R.sup.3 and R.sup.4 are alkyl groups having from 1 to about 5 carbon atoms; andii) the stabilizing agent has a melting point ranging from about 105.degree. C. to about 125.degree. C.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: December 19, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Walton W. Welna
  • Patent number: 5358987
    Abstract: A new polysilane composition usable as an organic semiconductor which contains a specific polysilane compound of 6000 to 200000 in a weight average molecular weight in which all the substitutional groups and end groups being substituted by specific organic groups not containing oxygen atom, said polysilane compound not containing chlorine atom, and an acceptor level forming material or/and a donor level forming material.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: October 25, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kanai, Hisami Tanaka, Harumi Sakou, Tatuyuki Aoike, Kouichi Matuda, Keishi Saitou, Mituyuki Niwa, Masahumi Sano
  • Patent number: 5319010
    Abstract: The instant invention pertains to viscous fluid coupling organopolysiloxane compositions comprised of (A) at least one organopolysiloxane fluid that has the general formula R.sup.1.sub.a R.sup.2.sub.b SiO.sub.[4-(a+b)]/2 wherein R.sup.1 is an alkyl group, R.sup.2 is an aryl group, a+b has the value of 1.95 to 2.05, and b/(a+b) has the value of 0.05 to 0.30; and (B) 0.01 to 5 weight parts by weight per 100 parts by weight of component (A) of a compound with the general formula ##STR1## wherein each R.sup.3 is independently selected from an alkyl group and C has the value of 0 to 2. The viscous fluid coupling organopolysiloxane compositions of the instant invention are capable of withstanding long-term use and under high-temperature, high-shear conditions with little increase or decrease in viscosity and almost no torque fluctuation.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: June 7, 1994
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Osamu Mitani, Ichiro Murakami
  • Patent number: 5244028
    Abstract: The present invention relates to a pneumatic tire sidewall and to elastomeric compositions useful therefor. The elastomeric compositions are comprised of:(a) natural rubber, polybutadiene, or mixtures thereof;(b) from about 1.0 to 5.0 phr of a precipitated silica filler having a BET surface area of between 100 and 250 square meters per gram and a pH of from 4.0 to 6.5;(c) from about 1.5 to 10.0 phr of an antidegradant selected from the group consisting of amines, phenolics and mixtures thereof.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: September 14, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Thomas J. Segatta, Paul H. Sandstrom, Zalman Ronen
  • Patent number: 5240976
    Abstract: Elastomers are very effectively stabilized against thermal and oxidative degradation at elevated temperatures with a blend of an N,N,N',N'-tetrasubstituted 1,4-diamino-2-butene, where the substituents are alkyl, cycloalkyl, aralkyl, aryl or mixtures thereof, in combination with a mercaptoimidazole of formula IV ##STR1## where E is hydrogen, alkyl, cycloalkyl, aryl or phenylalkyl.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: August 31, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Douglas W. Horsey, Ambelal R. Patel
  • Patent number: 5229442
    Abstract: Stabilizing compositions for organic polymers, composed of mixtures of at least one liquid phenolic antioxidant and at least one aminic antioxidant, subjected to thermal treatment, are characterized by their stabilizing capacity which is considerably higher than that of either single components or of corresponding untreated mixtures.These stabilizing compositions can be used in all field where the single components of the mixtures are generally used and, preferably, in the stabilization of organic polymers normally subject to deterioration due to oxidation processes.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: July 20, 1993
    Assignee: Enichem Synthesis S.p.A.
    Inventors: Fabio Broussard, Carlo Busetto
  • Patent number: 5210122
    Abstract: A polymeric composition having aromatic polycarbonate or aromatic polycarbonate like properties which process at significantly lower temperatures than aromatic polycarbonate in admixture with an additive which is incompatible with an aromatic polycarbonate at standard processing temperature.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: May 11, 1993
    Assignee: General Electric Company
    Inventors: Luca P. Fontana, Kenneth F. Miller, Edgar E. Bostick
  • Patent number: 5185391
    Abstract: The invention is a composition containing a polymer formed by side ring opening of an arylcyclobutene compound and an effective amount of an antioxidant.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: February 9, 1993
    Assignee: The Dow Chemical Company
    Inventor: Theodore M. Stokich, Jr.
  • Patent number: 5176872
    Abstract: Improved resin compositions for use in multiple cavity stretch blow molding processes comprising: (a) a propyleneethylene copolymer resin including from about 5% to about 15% of a second stage polymer characterized by a cycle time of T.sub.1, when used to produce containers in multiple cavity stretch blow molding processes; (b) from about 0.1% to about 1.0% of a nucleating agent prepared by irradiating in air a mixture of a propylene homo or copolymer and about 500 to about 3000 ppm of antioxidant with a sufficient amount of ionizing radiation to cause said nucleating agent to have a xylene insoluble content of at least 30%. The improved resin composition is characterized by a cycle time of T.sub.2 when used to produce containers in multiple cavity stretch blow molding processes such that the ratio of T.sub.2 /T.sub.1 is less than 0.95.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: January 5, 1993
    Assignee: Rexene Products Company
    Inventors: Bennie M. Lucas, V. Krishnamurthy, John R. Bonser
  • Patent number: 5151459
    Abstract: N,N,N',N'-Tetrasubstituted 1,4-diamino-2-butynes or N,N-disubstituted propargylamines where the substituents are alkyl, cycloalkyl, phenylalkyl, aryl or mixtures thereof provide effective antioxidant protection to lubricants and/or synthetic polymers.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: September 29, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Joseph E. Babiarz, Werner Rutsch
  • Patent number: 5120779
    Abstract: A new class of antiozonant compounds, namely tris(N-alkyl-p-phenylenediamino)-1,3,5-triazine compounds, are incorporated into thermosetting compositions having at least one highly unsaturated rubbery polymer and at least one other elastomer having lesser unsaturation, such as EPDM. Thermosetting compositions are most useful as tire sidewall compositions which may be preferably cured with blends of organic peroxide and sulfur donor accelerators.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: June 9, 1992
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Robert J. Cornell, Edward L. Wheeler, Russell A. Mazzeo, Sung W. Hong
  • Patent number: 5118735
    Abstract: A composition comprising (A) (i) a crosslinked organosilicon polymer or crosslinkable organosilicon prepolymer comprising alternating (a) cyclic polysiloxane or tetrahedral siloxysilane residues and (b) polycyclic hydrocarbon residues derived from polycyclic polyenes having at least two non-aromatic, non-conjugated carbon-carbon double bonds in their rings linked through carbon to silicon bonds, wherein at least one of the cyclic polysiloxanes or tetrahedral siloxysilanes (a) or the polycyclic polyenes (b) used to form the polymer or prepolymer has more than two reactive sites; or (ii) a crosslinked or crosslinkable linear poly(organohydrosiloxane) polymer having at least 30% of its .tbd.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: June 2, 1992
    Assignee: Hercules Incorporated
    Inventor: Julia S. Burnier
  • Patent number: 5079340
    Abstract: A thermoplastic polyketone polymer composition having thermoset properties, processes for its production, and articles made thereof are disclosed. This composition also having improved continuous use temperature and thermal stability properties can be produced by crosslinking, at elevated temperatures, a thermoplastic polyketone resin with a suitable basic material. Optionally, suitable lubricants or fillers can also be added to further improve the properties of the resulting composition.
    Type: Grant
    Filed: April 30, 1991
    Date of Patent: January 7, 1992
    Assignee: Shell Oil Company
    Inventors: Andrew B. Auerbach, Stephen J. Hanley
  • Patent number: 5073579
    Abstract: Process for enhancing the electrostatic chargeability of powder coatings or powders, and the use thereof for surface-coating solid objects.A process for enhancing the electrostatic chargeability of powder coatings or powders intended for surface-coating solid objects, by homogeneously incorporating at least one triarylmethane, azine, thazine and/or oxazine compound in an amount from about 0.01 to about 10 percent by weight into powder coatings or powders, the compounds mentioned being dissolved or dispersed in the powder coating system or powders.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: December 17, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans-Tobias Macholdt, Alexander Sieber, Claus Godau, Albrecht Manz
  • Patent number: 5070124
    Abstract: The present invention is a composition comprising crosslinked polyolefin resins and an amount of organic sulfide antioxidants sufficient to stabilize the resin against thermal or oxidative degradation, wherein the organic sulfide antioxidant is represented by Formula I, II or III ##STR1## wherein m, n, R, R.sup.1, R.sup.2, R.sup.3, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are as set forth in the Summary of the Invention.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: December 3, 1991
    Assignee: Atochem North America, Inc.
    Inventors: Joseph M. Bohen, James L. Reilly
  • Patent number: 5063263
    Abstract: Incorporation into polyacetal molding compositions stabilized for processing with a non-meltable polymer stabilizer of 0.01-1.00 weight percent of at least one meltable co-stabilizer, said co-stabilizer being a thermal stabilizer for polyacetal, and 0.02-1.0 weight percent of at least one primary antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: November 5, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
  • Patent number: 5023287
    Abstract: There is disclosed the use of matrix-antidegradants in rubber and a process for the production of matrix-antidegradants. More specifically, this invention is directed to microparticles of vulcanized rubber containing high levels of para-phenylenediamine type antiozonants which have a particle diameter of 100 microns or less. The matrix-antidegradant or microparticles prepared according to this invention provide long term protection to rubber articles that are subject to ozone and oxygen attack.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: June 11, 1991
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Larry R. Evans, Walter H. Waddell, Frank W. Harris, David A. Benko
  • Patent number: 4992499
    Abstract: Linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are stabilized against thermal degradation by the inclusion therein of a stabilizing amount of a combination of a phenolic compound and an aromatic amine.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: February 12, 1991
    Assignee: Shell Oil Company
    Inventors: Johannes L. M. Syrier, Hendrik Van De Weg, Robert Q. Kluttz
  • Patent number: 4972014
    Abstract: Incorporation into polyacetal molding compositions stabilized with a non-meltable polymer stabilizer of 0.02-1.0 weight percent of at least one amide-containing phenolic antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
  • Patent number: 4946881
    Abstract: A new class of antiozonant compounds, namely tris(N-alkyl-p-phenylenediamino)-1,3,5-triazine compounds, are incorporated into thermosetting compositions having at least one highly unsaturated rubbery polymer and at least one other elastomer having lesser unsaturation, such as EPDM. Thermosetting compositions are most useful as tire sidewall compositions which may be preferably cured with blends of organic peroxide and sulfur donor accelerators.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: August 7, 1990
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Robert J. Cornell, Edward L. Wheeler, Russell A. Mazzeo, Sung W. Hong
  • Patent number: 4946879
    Abstract: There is disclosed a reaction product of a rosin acid and a polyfunctional compound having at least one functional group capable of reacting with a carboxylic acid functionality and another functional group having antidegradant properties.The reaction products of this invention can be used as antidegradants in polymeric compositions and lubricating oil compositions.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: August 7, 1990
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Lawson G. Wideman, Paul H. Sandstrom
  • Patent number: 4918124
    Abstract: Stabilizing mixtures, acting synergistically, of phenolic antioxidants and sulphur-containing polymers having terminal thioalkyl groups.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: April 17, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 4876301
    Abstract: The invention relates to a polyamide composition with improved stability in contact with oil at elevated temperatures. The polyamide composition with superior stability characteristics has been obtained by the incorporation in the polyamide composition of a small amount of an alkaline inorganic material. Preferably the polyamide is nylon 4.6.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: October 24, 1989
    Assignee: Stamicarbon B.V.
    Inventors: Erik R. Peerlkamp, Pieter Gijsman
  • Patent number: 4853425
    Abstract: 1. A melt-processable fluorine-containing resin composition comprising:(A) a fluorovinyl ether-tetrafluoroethylene copolymer and(B) a thermal stabilizer in an amount of not less than 0.01 to less than 500 ppm of said copolymer (A). When using the composition of the present invention, the bubbles formation is not caused upon sintering and the obtained product is not colored.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: August 1, 1989
    Assignee: Daikin Industries, Ltd.
    Inventors: Tatsushiro Yoshimura, Nobuyuki Tomihashi, Shuhei Shimasaki
  • Patent number: 4843114
    Abstract: A highly improved elastomeric composition, process, and articles made thef, wherein the novel composition is characterized by greatly increased wear longevity, thermomechanical stability, highly improved tear and tensile strength at high temperature useage, in addition to high resistance to burning in open flame, as well as high resistance to cutting, chipping, cracking and crack propagation particularly in product use for tank track pads and other related track system elastomeric component products; wherein the improved composition is a unique combination of its respective polymer, filler, curing and antidegradant systems, in which the polymer system either consists of about 100 parts by weight of highly saturated nitrile polymer or of various novel blends of the highly saturated nitrile usually in majority amounts together with minority amounts of carboxylated nitrile, with or without additional minority or near equal parts of nitrile rubber; and wherein the curing system may include various blends of from
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: June 27, 1989
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Paul Touchet, Gumersindo Rodriguez, Paul E. Gatza, Daniel P. Butler, Dawn Crawford, Alan R. Teets, Hank O. Feuer, David P. Flanagan
  • Patent number: 4829115
    Abstract: This invention is concerned with the stabilization of organic materials subject to oxidative degradation. The synergists of this invention possess organothioethyl alcohol segmers or moieties which enhance the antioxidative activity of phenolic and amine stabilizers. The invention is also concerned with compounds that contain an organothioethyl alcohol moiety and their use in oxidizable materials in combination with polymerizable and/or conventional antidegradants.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: May 9, 1989
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Kirkwood S. Cottman
  • Patent number: 4822839
    Abstract: A polyunsaturated hydrocarbon polymer-compatible anti-oxidant composition is provided which comprises a mixture of at least one sterically hindered phenolic compound and at least one aryl amine compound in a molar ratio ranging from about 0.1 to about 10.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: April 18, 1989
    Assignee: Hercules Incorporated
    Inventor: Martin J. Paisner
  • Patent number: 4808643
    Abstract: EPDM and/or EPR rubber/silicone compositions having improved thermal properties, well adapted for the production of a wide variety of useful shaped articles, e.g., automotive seals, gaskets and belts, include a 2-mercapto-benzimidazole or salt thereof, preferably the zinc salt, an antioxidant comprising a secondary amine function, a diorganopolysiloxane oil, appropriate filler material and a peroxide crosslinking catalyst.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: February 28, 1989
    Assignees: Rhone-Poulenc Chimie, Compagnie de Raffinage et de Distribution Total France
    Inventors: Guy Lemoine, Robert Lucas, Meyer Soria
  • Patent number: 4795774
    Abstract: Polymeric compositions of enhanced stability against oxidative degradation are produced when aromatic amines of up to 2 aromatic rings and at least one amino group are incorporated in polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: January 3, 1989
    Assignee: Shell Oil Company
    Inventor: Robert Q. Kluttz
  • Patent number: 4794134
    Abstract: Rubber articles subjected to ozone while under dynamic flexing conditions are protected using a novel triazine class of materials, specifically tris-(N-alkyl-p-phenylenediamino)-1,3,5-triazines. Belts, hose, air springs, roofing membranes, etc. are preferred articles of the invention.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: December 27, 1988
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Edward L. Wheeler, Robert J. Franko
  • Patent number: 4794135
    Abstract: Disclosed are novel tris(N-alkyl-p-phenylenediamino)-1,3,5-triazine compounds useful as antiozonants for unsaturated high polymers. The compounds may be prepared by reacting N-alkylphenylenediamine with a cyanuric halide.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: December 27, 1988
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Edward L. Wheeler, Franklin H. Barrows, Robert J. Franko, Wadim Batorewicz
  • Patent number: 4767809
    Abstract: Elastomeric compositions produced by curing blends comprising (A) a highly unsaturated rubber; (B) a saturated rubber; (C) a phenylenediamine compound and (D) a curing agent comprised of (i) sulfur and/or a sulfur donor compound, (ii) a sulfur cure accelerator, and (iii) a peroxide curative; wherein between about 1 and about 10 parts by weight of (C) per 100 parts by weight of (A) plus (B) is present exhibit unexpectedly high resistance to cut growth. In addition, a process for producing such rubber compositions is disclosed.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: August 30, 1988
    Assignee: Uniroyal Chemical Company, Inc.
    Inventor: Donald E. Wingrove
  • Patent number: 4764547
    Abstract: A rubber composition comprising 30-140 parts by weight of carbon black treated with a particular compound based on 100 parts by weight of rubber which provides an improved reinforcement property of the rubber composition and at the same time improvement of the efficiency of productivity in tire manufacturing.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: August 16, 1988
    Assignee: Bridgestone Corporation
    Inventors: Takashi Hatanaka, Michitaka Takeshita
  • Patent number: 4735980
    Abstract: This invention is concerned with compounds of the structural formula: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different radical selected from the group consisting of hydrogen and methyl radicals; when R.sup.1 is a hydrogen radical, R is an alkyl radical of 5 to 11 carbon atoms; when R.sup.1 is a methyl radical, R is a radical of 4 to 10 carbon atoms; when R.sup.2 is a hydrogen radical, R.sup.3 is an alkyl radical of 5 to 11 carbon atoms; when R.sup.2 is a methyl radical, R.sup.3 is an alkyl radical of 4 to 10 carbon atoms. These compounds have utility as synergists for phenolic type and amine type antioxidants in the stabilization of natural and synthetic rubbers.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: April 5, 1988
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Budd H. Sturm, Joseph A. Kuczkowski, Joel Muse
  • Patent number: 4654387
    Abstract: Compounds corresponding to the following general formula: ##STR1## wherein R.sup.0 represents H or, together with R.sup.1, represents --CO-- when X represents --CO-- or, together with R.sup.2, represents --CO-- when X represents --CH.sub.2 --CO,a residue of R, R.sup.1 and R.sup.2, H, C.sub.1 -C.sub.4 alkyl, aryl, COOR.sup.5 or, when R.sup.0 represents H and X represents --CO--, ##STR2## and the other residues R, R.sup.1 and R.sup.2 represent H; R.sup.3 represents H or CH.sub.3 ;R.sup.4 represents C.sub.7 -C.sub.20 aralkyl;R.sup.5 represents H, C.sub.1 -C.sub.4 alkyl or C.sub.6 -C.sub.12 aryl;X represents a residue --(CH.sub.2).sub.n CO--, --(CH.sub.2).sub.n SO.sub.2, --CH.sub.2 --, --CH.sub.2 O--CO-- ##STR3## m represents 1 or 2; and n represents 0 or 1;are suitable for use as incorporable antiagers for polymers, particularly nitrile rubber.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: March 31, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Zsolt Szentivanyi, Josef Witte
  • Patent number: 4616053
    Abstract: Thermoplastical processible polyamides are rendered hydrophobic by addition of particular aromatic amines, optionally in combination with selected phenolic compounds.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: October 7, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus-Dieter Schultz, Rolf-Volker Meyer, Rolf Dhein, Heinz-Josef Fullmann, Dietrich Michael
  • Patent number: 4609699
    Abstract: This invention relates to polyarylene sulphides (PPS) produced in known manner from optionally substituted halogen benzenes and aromatic polyhalogen compounds, optionally in combination with other polymers, fillers and/or reinforcing fibres, which contain certain N-containing organic bases for reducing the elimination levels of acidic, corrosion-producing volatile constituents and for improving the flow properties thereof.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: September 2, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf-Volker Meyer, Klaus Reinking, Karsten-Josef Idel, Rolf Dhein
  • Patent number: 4607071
    Abstract: Improvement of a process for spin-dyeing acid-modified polymers or copolymers of acrylonitrile in which cationic quaternary dyestuffs are added to the spinning mass and spun according to the wet-spinning procedure. The improvement is characterized by using dyestuffs characterized by a migration factor M of 20 or less than 20, by a combination index K of less than 2.5 and a cation weight of more than 310. Migration factor M and combination index K are known values in the dyestuff field or can be determined. The dyestuff to be used according to the invention can belong to the most different classes of dyestuffs; they fix rapidly on the polymer, and thus they do not color, or color only to a minor extent, the coagulation, stretching and washing baths although they are soluble in water and aqueous solutions of these baths.
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: August 19, 1986
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Manfred Hahnke, Reinhard Mohr, Kurt Hohmann