Patents Examined by Veronica P. Hoke
  • Patent number: 6815476
    Abstract: A flame retardant moldable thermoplastic resin composition consisting of a thermoplastic resin and a flame retardant consisting of a combination of a low molecular weight phosphate having a molecular weight of about 500 to about 2000 and a high molecular weight phosphate having a molecular weight of about 2300 to about 11,000 and to articles molded therewith. The composition has a high heat deflection temperature, good impact resistance, excellent flame retardancy and good flow for easier processing.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: November 9, 2004
    Assignee: General Electric Company
    Inventors: Qamar Bhatia, Robert Howe
  • Patent number: 6689827
    Abstract: The invention relates to transparent, impact-resistant thermoplastic molding materials containing A) a matrix consisting of at least two different mixture components, B) an impact-resistance modifier, C) an additive, essentially consisting of c1) at least one 2,6-disubstituted phenol, and c21) at least one organic phosphite of general formula (I) P(OR1)n(OAr)3−n, c22 at least one organic phosphite of general formula (IIa) and/or (IIb), or c23) a mixture of compounds in accordance with c21) and c22).
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: February 10, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Rainer Neumann, Claudia Messinger, Klaus Benker, Armin Kurps
  • Patent number: 6491853
    Abstract: The present application relates to storage-stable plastics additives which are prepared by cooling a mixture of 99.9 to 10% by weight of molten additive material and 0.1 to 90% by weight of crystalline additive material after a shaping process. The shaping process is carried out by forcing the mixture out of a tool provided with die openings, and cooling can be carried out on a cooled conveyor belt. Even after prolonged storage and/or handling, these plastics additives remain free-flowing and do not stick.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: December 10, 2002
    Assignee: Clariant GmbH
    Inventors: Karl Gaa, Günter Nowy, Gerhard Pfahler, Matthias Zäh
  • Patent number: 6451887
    Abstract: 2H-Benzotriazole UV absorbers substituted at the 3-position and/or the 5-position of the phenyl ring by &agr;-cumyl moiety which is substituted by a heteroatom are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: September 17, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Mervin G. Wood, Joseph Suhadolnik, Ramanathan Ravichandran, Jacqueline Lau, Carmen Hendricks-Guy, Christophe Bulliard
  • Patent number: 6448322
    Abstract: Halogenated isobutylene-p-methylstyrene polymers are stabilized against discoloration with a weak base such as 100 to 500 ppm sodium bicarbonate. The additive is added to the rubbery polymers after dewatering in the finishing step of their manufacture. The curability of the stabilized rubbers is not adversely affected by the sodium bicarbonate additive.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: September 10, 2002
    Assignee: Exxon Mobil Chemical Patents Inc.
    Inventors: Richard C. Yeh, David Yen-Lung Chung, Chia Shian Chee
  • Patent number: 6420459
    Abstract: The invention relates to flame-retardant thermoset compositions which comprise, as flame retardant, at least one phosphinic and/or a diphosphinic salt of these.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: July 16, 2002
    Assignee: Clariant GmbH
    Inventor: Sebastian Hörold
  • Patent number: 6418661
    Abstract: A hydrotalcite compound which has the excellent ability to absorb infrared rays and has excellent light transmission when contained in an agricultural film; a process for producing the compound; and an infrared absorber and an agricultural film both containing the compound. The hydrotalcite compound is characterized by retaining as the interlayer anions at least one kind of anions selected among ions of silicon-, phosphorus-, and boron-containing polymeric oxyacids and another kind of anions.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: July 16, 2002
    Assignee: Kyowa Chemical Industry Co Ltd
    Inventors: Hideo Takahashi, Akira Okada
  • Patent number: 6414059
    Abstract: A fire-retardant resin composition, comprising: a thermoplastic resin component (A) of (a) a (hydrogenated) block copolymer mainly made of a vinyl aromatic compound and a conjugated diene compound, (b) a nonaromatic-series softener for rubber, (c) an ethylene/&agr;-olefin copolymer, (d1) an ethylene copolymer with either/vinyl acetate (meth)acrylic acid or meth/acrylate, (e) a polypropylene resin, and (f) a modified polyethylene resin; and (g) an organic peroxide, (h) a (meth)acrylate-series and/or allyl-series crosslinking aid, and a metal hydrate (B), wherein a specific amount of the metal hydrate (B) is one pretreated with a silane coupling agents.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: July 2, 2002
    Assignee: Riken Technos Corporation
    Inventors: Kazuhiko Kobayashi, Ken Okubo, Shinnichi Kishimoto, Masaki Nishiguchi, Hitoshi Yamada, Dai Hashimoto
  • Patent number: 6414060
    Abstract: Thermoplastic polycarbonate-ABS resin is rendered flame retardant by blending with the resin an O,O-diaryl-N-arylphosphoramidate, an arylene-N,N′-bis(O,O-diarylphosphoramidate) in which the nitrogen atoms are in the 1,3 or 1,4 positions on an arylene ring, or an N,N′-piperazinediylbis(O,O-diarylphosphoramidate). These flame retardants are halogen-free. They provide molded objects having high heat distortion temperatures, and high softening temperatures. Flame retardants of these types have been found to be thermally stable at temperatures of at least 260° C., and they did not discolor the polymer composition during exposure to molding temperatures.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: July 2, 2002
    Assignee: Albemarle Corporation
    Inventors: John M. McEuen, Mark W. Beltz, Govindarajulu Kumar
  • Patent number: 6410613
    Abstract: Disclosed herein are a novel phosphate compound by which a copper ion can be dispersed in a high proportion in a synthetic resin, thereby providing excellent visible ray-transmitting property and performance that near infrared rays are absorbed with high efficiency, a preparation process thereof, a phosphate copper compound obtained from the phosphate compound and a preparation process thereof, and a near infrared ray-absorbing acrylic resin composition which has both excellent visible ray-transmitting property and near infrared rays absorption capability.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: June 25, 2002
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuhiro Ohnishi, Hiroki Katono
  • Patent number: 6410629
    Abstract: The invention includes a process for inhibiting deterioration in an olefin polymer by adding a phenolic free radical inhibitor during or before polymerization with a metallocene type transition metal catalyst without inactivating the free radical inhibitor because does not inhibit the transition metal catalyst activity. Preferably the free radical inhibitor is first to remove compounds which inhibit catalyst activity. The invention also includes a composition comprising at least one olefin monomer, a polymer of the monomer, a metallocene type transition metal catalyst and at least one free radical inhibitor having sufficient substituents to hinder the active inhibiting group such that it does not undesirably inhibit the transition metal catalyst.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: June 25, 2002
    Assignee: The Dow Chemical Company
    Inventors: Michael J. Mullins, Peter N. Nickias, Jorge Soto
  • Patent number: 6403690
    Abstract: A halogen-free flame retardant resin composition comprising a radically polymerizable resin which is modified with a phosphorus-containing compound of the formula (1): in which R is a hydrogen atom or a group of the formula: —(CH2)n—R1 in that R1 is a group derived from a compound having at least two phenolic hydroxyl groups or epoxy groups, and n is an integer of 0 to 3.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: June 11, 2002
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Kiyotaka Komori, Keiko Kashihara, Kenji Ogasawara, Akiyoshi Nozue, Shigehiro Okada
  • Patent number: 6399699
    Abstract: A polyacetal resin composition which comprises about 100 parts by weight of a polyacetal having a residual fluorine concentration of not more than about 13 ppm and a concentration of formaldehyde generated when the polyacetal is heated at about 230° C. for about 30 minutes in nitrogen of not more than about 500 ppm; from about 0.01 to about 3 parts by weight of an antioxidant; and from about 0.001 to about 5 parts by weight of a basic substance. The above polyacetal resin composition is excellent in long-term thermal aging resistance under high-temperature circumstances.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: June 4, 2002
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yukio Tanigawa, Tadashige Hata
  • Patent number: 6387992
    Abstract: Compounds of formula I or II where R is a heteroaryl moiety, such as 3-pyridyl, or T is a heteroaryl moiety, such as thien-2,5-diyl, and E1 and E2 are independently hydrogen, alkyl, aralkyl and the like, are prepared by reaction of a benzotriazole substituted on the 5-position of the benzo ring by a halogen atom with a heteroarylboronic acid or ester in the presence of a transition-metal catalyst, such as palladium (II) diacetate. The benzotriazole compounds of formula I are particularly efficacious as stabilizers for automotive coatings and candle wax.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: May 14, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Stephen D. Pastor, Anthony DeBellis, Mervin G. Wood, Joseph Suhadolnik, Deborah DeHessa, Ramanathan Ravichandran
  • Patent number: 6388120
    Abstract: A method of making phosphoric acid esters by continuously reacting a phosphorus oxyhalide with a polyol to produce at least about 60% normalized monomeric halophosphate intermediate, and then reacting the monomeric halophosphate intermediate with an alcohol to produce a desired phosphoric acid ester is provided. In other embodiments, the reaction of the monomeric halophosphate intermediate with the alcohol can also be carried out continuously. Another aspect of the invention provides a method of making phosphoric acid esters by continuously reacting a phosphorus oxyhalide with a monohydric alcohol to produce at least about 60% normalized monohalomonophosphate diester intermediate, and then reacting the monohalomonophosphate diester intermediate with a polyol to produce a phosphoric acid ester. In other embodiments, the reaction of the monohalomonophosphate diester intermediate with the polyol may also be carried out continuously.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: May 14, 2002
    Assignee: PABU Services, Inc.
    Inventors: Robert M. Farner, David W. Bartley, Jon D. Lehmkuhler
  • Patent number: 6387993
    Abstract: The invention relates to a water-based flame-retardant composition comprising at least one polyvinylpyrrolidone polymer, at least one silane coupling agent and at least one inorganic compound. The flame-retardant composition has low organic content and low toxicity. The flame-retardant composition may further comprise at least one polymeric emulsion and can be used as a coating or an adhesive. The invention also provides a flame-retardant article comprising a substrate and the flame-retardant composition disposed on a surface of the substrate.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: May 14, 2002
    Assignee: H. B. Fuller Licensing & Financing Inc.
    Inventor: Vernon H. Batdorf
  • Patent number: 6384113
    Abstract: This invention relates generally to a new class of benzocycle-substituted pyrimidines and triazines and the use thereof to protect coatings, polymers and organic compounds against degradation by environmental forces, inclusive of ultraviolet light, actinic radiation, oxidation, moisture, atmospheric pollutants and combinations thereof. The new class of benzocycle-substituted pyrimidines and triazines comprises a benzocycle attached to the triazine or pyrimidine ring, and preferably an additional aryl ring containing a hydroxyl group, either free or blocked to form a latent stabilizer, ortho- to the point of attachment to the triazine or pyrimidine ring.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: May 7, 2002
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Dennis J. Jakiela, Robert G. Fischer
  • Patent number: 6384128
    Abstract: A thermoplastic resin composition capable of providing a thin walled molded article whose flame retardancy with a thickness of 1.6 mm ({fraction (1/16)} inch) in accordance with an UL 94 standard is V-0 or better, and which comprises the following components [A], [B] and [C], wherein the component [B] satisfies the following conditions (B1) and/or (B2): [A]: an electrically conductive fiber; [B]: a carbon powder; [C]: a thermoplastic resin; (B1): Raman scattering intensity ratio I2/I1 is 0.55-0.8; (B2): Raman scattering intensity ratio I2/I3 is 0.54-0.8;  where I1: local maximum value of Raman scattering intensity appearing near a Raman shift of 1360 cm−1; I2: local minimum value of the Raman scattering intensity appearing near a Raman shift of 1480 cm−1; I3: local maximum value of the Raman scattering intensity appearing neat a Raman shift of 1600 cm−1.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: May 7, 2002
    Assignee: Toray Industries, Inc.
    Inventors: Eisuke Wadahara, Kenichi Yoshioka, Soichi Ishibashi
  • Patent number: 6384105
    Abstract: New injectable, in situ crosslinkable biodegradable polymer composites comprise poly(propylene fumarate) (PPF), poly(ethylene glycol)-dimethacrylate (PEG-DMA), an, optionally, &bgr;-tricalcium phosphate (&bgr;-TCP). A method for controlling the crosslinking characteristics of the composites, including the maximum crosslinking temperature and the gel point, as well as the properties of the cross linked composites such as the compressive strength and modulus and the water holding capacity, is disclosed.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: May 7, 2002
    Assignee: William Marsh Rice University
    Inventors: Shulin He, Michael J. Yaszemski, Antonios G. Mikos
  • Patent number: 6380286
    Abstract: A synergistic stabilizer mixture comprising a component a) and, for example, a component b), where component a) is at least one compound of the formula I in which R1 is hydrogen or methyl, R2 is a direct bond or C1-C10alkylene, and n1 is a number from 2 to 50; component b) is at least one compound of the formulae IIa and IIb in which n2 and n2* are a number from 2 to 50.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: April 30, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: François Gugumus