At Least Two Polymers Derived From Nitrogen-containing Reactants Patents (Class 525/234)
  • Publication number: 20140378568
    Abstract: A rubber-reinforced styrene type resin composition for resin foams, the resin foams having a specific gravity of 0.3 to 0.7 and a ratio of the thickness of a skin layer to the thickness of the resin foam of 0.3 to 20%; the composition comprising: 10 to 99% by weight of a rubber-reinforced styrene type resin (A) which is obtained by bulk polymerization of a rubber polymer and an aromatic vinyl monomer, a vinyl cyanide monomer, and if necessary, another monomer that is copolymerizable with these monomers, a weight average particle diameter of the rubber polymer being 0.7 to 3 ?m, and 1 to 90% by weight of a copolymer (B) which is obtained by copolymerizing an aromatic vinyl monomer, a vinyl cyanide monomer, and if necessary, another monomer that is copolymerizable with these monomers (with the total of the rubber-reinforced styrene type resin (A) and the copolymer (B) being 100% by weight).
    Type: Application
    Filed: January 11, 2013
    Publication date: December 25, 2014
    Applicant: NIPPON A&L INC.
    Inventors: Jiichiro Yoshida, Nobuyuki Nakashima
  • Publication number: 20130230711
    Abstract: Disclosed are an ABS resin composition and an ABS sheet using the same, wherein the ABS resin composition has an excellent surface quality and enables the manufacture of a sheet with excellent glossiness even in thermoforming. The ABS resin composition according to the invention comprises a) 50-80 weight % of an acrylonitrile-butadiene-styrene (ABS) resin, b) 10-30 weight % of a styrene-acrylonitrile (SAN) copolymer, and c) 10-20 weight % of a rubber resin, wherein the ABS resin is a bulk polymerization-type ABS resin.
    Type: Application
    Filed: November 7, 2011
    Publication date: September 5, 2013
    Applicant: LG Hausys, Ltd.
    Inventors: Sang-Won You, Min-Hee Lee, Eung-Kee Lee, Chang-Hak Shin
  • Patent number: 8426524
    Abstract: A reduced cost elastomeric blend suitable for use in vehicle timing belts and other applications constructed with elastomeric portions having a high HNBR concentration. The blends comprise from about 50 to less than 100 phr of HNBR and from about 0.1 to about 50 phr of lower cost diluent unsaturated nitrile rubber with from about 0.1 to about 30 phr of a heat resistant additive, which may be THERBAN HT. The elastomeric blends may be cured with a peroxide/co-agent cure system. The elastomeric blends may be mixed by a Y-mix method to improve ozone resistance. A timing belt constructed of the elastomeric blend is also taught.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: April 23, 2013
    Assignee: Veyance Technologies, Inc
    Inventors: Mauro Piccirilli, Thomas George Burrowes
  • Publication number: 20130029069
    Abstract: The present invention relates to vulcanizable polymer compositions comprising a very low molecular weight optionally hydrogenated nitrile rubber, at least one cross-linking agent, optionally at least one filler and optionally one or more further auxiliary products for rubbers, a process for preparing such vulcanizable polymer compositions, furtheron a process for vulcanizing such polymer compositions and the resulting vulcanizate, preferably as a shaped article.
    Type: Application
    Filed: August 26, 2010
    Publication date: January 31, 2013
    Applicant: LANXESS Deutschland GmbH
    Inventors: Matthias Soddemann, Christopher Ong, Julia Maria Mueller, Thomas Koenig, Kevin Kulbaba
  • Patent number: 8030407
    Abstract: An activated carbon fiber for fabricating a supercapacitor electrode and its precursor material are provided. The precursor material of the activated carbon fiber includes polyacrylonitrile (PAN) and a polymer having formula (I): wherein R1 is cyano, phenyl, acetate, or methoxycarbonyl, R2 is ?R3 is C1-7 alkyl, X is chlorine, bromine, tetrafluoroborate (BF4), hexafluorophosphate (PF6), or NH(SO2CH3)2, and m/n is 1-99/99-1.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: October 4, 2011
    Assignee: Industrial Technology Research Institute
    Inventors: Lien Tai Chen, Shu-Hui Cheng, Tun-Fun Way, Tzu Hsien Han
  • Patent number: 7956128
    Abstract: A thermoplastic resin composition for a refrigerator according to the present invention can include (A) about 20 to about 40 parts by weight of an acrylonitrile-butadiene-styrene graft copolymer resin prepared by grafting in emulsion polymerization about 60 to about 30% by weight of a monomer mixture comprising a cyanide vinyl compound and an aromatic vinyl compound to about 40 to about 70% by weight of a rubber polymer having an average particle size of about 0.1 to about 0.4 ?m; (B) about 1 to about 20 parts by weight of a styrenic copolymer comprising (b1) about 0 to about 75% by weight of a styrenic copolymer prepared by copolymerizing about 5 to about 20% by weight of a rubber polymer having an average particle size of about 0.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: June 7, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Kang Yeol Park, Hee Jung Park, Jae Hyung Lee
  • Patent number: 7847008
    Abstract: A hydrogenated NBR composition, which comprises 100 parts by weight of a blend of a hydrogenated NBR having an acrylonitrile content of 25-44% by weight and an iodine number of 32-65, with such an amount of an NBR as to make the iodine number of the blend of 40-160, 2-23 parts by weight of an ester-based plasticizer, and 0.5-10 parts by weight of an organic peroxide, preferably which further contains 0.5-10 parts by weight of a polyfunctional, unsaturated compound, has a distinguished cost performance because of blending an expensive hydrogenated NBR with a cheap NBR, can give cross-linked products having a distinguished oil resistance (resistance to such oil as No. 3 oil and other general-purpose, commercially available engine oil, etc.) and a distinguished fuel oil resistance (resistance to such fuel oil as fuel oil C, and other general-purpose, commercially available gasoline, etc.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: December 7, 2010
    Assignee: NOK Corporation
    Inventor: Yoichi Moritani
  • Patent number: 7649051
    Abstract: A flame retardant thermoplastic composition comprising in combination a polycarbonate component; an impact modifier composition, the components of the impact modifier composition comprising a) a bulk polymerized ABS, and b) an impact modifier different from the ABS; an ungrafted rigid copolymer; and a flame retardant. The compositions have an improved balance of physical properties such as impact strength and flow, while at the same time maintaining their good flame performance.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: January 19, 2010
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Shiping Ma, Srinivas Siripurapu, Pei Sun, Karin van de Wetering, Wayne Yao
  • Patent number: 7544745
    Abstract: A flame retardant thermoplastic composition comprising in combination a polycarbonate component; an impact modifier composition, the components of the impact modifier composition comprising a) a bulk polymerized ABS, and b) an impact modifier different from the ABS; and a flame retardant. The compositions have an improved balance of physical properties such as impact strength and flow, while at the same time maintaining their good flame performance.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: June 9, 2009
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Shiping Ma, Srinivas Siripurapu, Pei Sun, Wayne Yao
  • Patent number: 7060751
    Abstract: A thermoplastic molding composition comprising a graft polymer is disclosed. The graft polymer contains: a) a continuous phase containing the polymerized product of at least one vinylaromatic monomer and at least one ethylenically unsaturated nitrile monomer, and b) a disperse phase containing ethylene/?-olefin rubber that is grafted with the polymerization product of at least one vinylaromatic monomer and at least one ethylenically unsaturated nitrile monomer. The weight average molecular weight of the continuous phase is 130,000 to 275,000 g/mole and the disperse phase is characterized in that its, weight average particle size is less than 0.90 ?m. The molding composition is characterized in improved resistance to weathering.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: June 13, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gisbert Michels, Holger Warth, Pierre Vanhoorne
  • Patent number: 7037978
    Abstract: The invention relates to a quasi-interpenetrating network of polymer chains, the chains comprising linear polyacrylamide (LPA) chains in the form of a main frame having a weight average molecular weight of approximately 0.05 million to approximately 25 million g/mole, and a radius of gyration of approximately 10 nm to 350 nm; and polydimethylacrylamide (PDMA) chains prepared by polymerizing PDMA in the presence of the LPA main frame, wherein the LPA and PDMA chains are entangled within one another and interpenetrate one another, and wherein the quasi-interpenetrating network has substantially no chemical cross-linking.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 2, 2006
    Assignee: The Research Foundation of SUNY at Stony Brook
    Inventors: Benjamin Chu, Liguo Song, Dufei Fang, Dehai Liang, Tianbo Liu, Yanmei Wang, Qicong Ying
  • Patent number: 6949607
    Abstract: Thermoplastic resin compositions containing a rubber-reinforced thermoplastic resin (A) obtained by graft polymerizing a monomeric mixture (b) in the presence of a rubber-like polymer (a), and a copolymer (B) obtained by polymerizing an aromatic vinyl compound, a vinyl cyanide compound and optionally other copolymerizable monomeric compound(s), which copolymer (B) being a mixture of a copolymer (B1) having Mw of 50,000 to 110,000 and a copolymer (B2) having Mw of 115,000 to 400,000. The content of the rubber-like polymer (a) content in the rubber-reinforced thermoplastic resin (A) is 10 to 25% by weight, the vinyl cyanide monomeric unit in the acetone soluble matter is 15 to 40% by weight, and the ratios of Mw to Mn and MZ to Mn of the acetone soluble matter being 2 to 5 and 5 to 11, respectively.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: September 27, 2005
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Tadashi Nagahara, Masanori Suzuki, Kazuki Iwai
  • Publication number: 20040249082
    Abstract: Siliceous materials were prepared by adding one or more additives, including one or more water soluble polymers, and derivatives thereof, as well as trifunctional silanes, to sols containing tetraalkoxysilanes derived from polyols. The polymers facilitate phase separation of the growing silica gel matrix, leading to high surface area self-supporting silica gels with cure occurring at ambient temperatures. The materials also show a significant reduction in shrinkage properties and significant protein stabilization abilities.
    Type: Application
    Filed: April 1, 2004
    Publication date: December 9, 2004
    Applicant: McMaster University
    Inventors: Zheng Zhang, Yang Chen, Jorge Cruz-Aguado, Richard J. Hodgson, Dina Tleugabulova, John D. Brennan, Michael A. Brook
  • Patent number: 6806315
    Abstract: A method for preparing a weatherable thermoplastic resin, having superior weatherability and colorability and a weatherable thermoplastic resin prepared by the method are provided. The method includes preparing a seed by adding a water-soluble initiator to either an aromatic vinyl compound or a (meth)acrylic acid alkyl ester to obtain a first compound and performing polymerization with respect to the first compound; preparing an alkyl acrylate rubber polymer by adding an alkyl acrylate monomer, a first emulsifier of pH about 3 to about 9, and an oil-soluble initiator to the seed to obtain a second compound and performing polymerization with respect to the second compound; and preparing graft copolymer by adding the aromatic vinyl compound, a vinyl cyanide compound, a second emulsifier of pH about 9 to about 13, and the oil-soluble initiator to the alkyl acrylate rubber polymer to obtain a third compound and performing graft copolymerization with respect to the third compound.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: October 19, 2004
    Assignee: LG Chem, Ltd.
    Inventors: Yang-Hyun Shin, Keun-Hoon Yoo, Tae-Bin Ahn, Chan-Hong Lee
  • Patent number: 6632888
    Abstract: The invention relates to rubber mixtures which contain microgels and isocyanatosilanes and vulcanisates produced therefrom. By adding isocyanatosilanes the mechanical properties of the vulcanisates, in particular the elongation properties and the abrasion resistance, are improved without the difference in rebound resilience at 70° C. and 23° C. being reduced.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: October 14, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Obrecht, Martin Mezger, Anthony Sumner
  • Publication number: 20030187139
    Abstract: A low dielectric constant material has a first backbone with an aromatic moiety and a first reactive group, and a second backbone with an aromatic moiety and a second reactive group, wherein the first and second backbones are crosslinked via the first and second reactive groups in a crosslinking reaction without an additional crosslinker, and wherein a cage structure having at least 10 atoms is covalently bound to at least one of the first and second backbone.
    Type: Application
    Filed: November 12, 2002
    Publication date: October 2, 2003
    Inventors: Kreisler Lau, Feng Quan Liu, Boris Korolev, Emma Brouk, Roger Leung
  • Patent number: 6498223
    Abstract: An objective of the present invention is to provide an unsaturated nitrile-conjugated diene-typed rubber capable of giving a vulcanized rubber which exhibits is well-balanced in terms of the mechanical strength, the oil resistance and the like, as well as a process for the production of the same, and a rubber composition which is containing such rubber and exhibits an excellent processability as well as a process for the production of the same. The unsaturated nitrile-conjugated diene-typed rubber in the invention is produced by polymerizing using certain amounts of an olefinically unsaturated nitrile monomer such as acrylonitrile and a conjugated diene monomer such as butadiene at first, and continuing by supplying a remainder of the monomers at a certain ratio continuously or stepwise to proceed the polymerization.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: December 24, 2002
    Assignee: JSR Corporation
    Inventors: Katsuhiko Sakata, Osamu Ishikawa
  • Publication number: 20020120062
    Abstract: The present invention relates to a thermoplastic resin composition comprising a rubber-reinforced thermoplastic resin (A) obtained by graft polymerizing a monomeric mixture (b) comprising an aromatic vinyl compound, a vinyl cyanide compound and optionally other copolymerizable monomeric compound(s) in the presence of a rubber-like polymer (a),
    Type: Application
    Filed: December 20, 2001
    Publication date: August 29, 2002
    Inventors: Tadashi Nagahara, Masanori Suzuki, Kazuki Iwai
  • Patent number: 6403723
    Abstract: The composition comprises a mixture of at least one ABS and/or ASA copolymer and an SAN copolymer having an acrylonitrile concentration of at least 43% by weight, and the quantity of SAN copolymer in the mixture is such that the total acrylonitrile concentration in the mixture is at least 30% by weight when the mixture contains only an ABS copolymer and at least 28% when the mixture contains an ASA copolymer alone or combined with an ABS copolymer.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: June 11, 2002
    Assignee: General Electric Company
    Inventor: Jean-Marie G. L. Dumont
  • Publication number: 20020007011
    Abstract: An objective of the invention is to provide a rubber composition which has satisfactory processability and dimension stability, and the like, gives a vulcanized rubber exhibiting excellent wearing resistance and tensile strength, and the like, and thus is useful in a belt, a hose and a tire and the like, as well as a crosslinked rubber particle for obtaining such rubber composition. A rubber composition of the invention comprises [1] a crosslinked rubber particle comprising as repeating units (a) 30 to 94.89% by weight of a conjugated diene unit, (b) 5 to 69.89% by weight of an aromatic vinyl unit, (c) 0.01 to 10% by weight of a monomer unit having at least two polymerizable unsaturated group, (d) one polymerizable unsaturated group and an amino group, a hydroxyl group and an epoxy group and (e) 0.
    Type: Application
    Filed: April 26, 2001
    Publication date: January 17, 2002
    Applicant: JSR CORPORATION
    Inventors: Tomohisa Konno, Toshihiro Tadaki, Yoshiyuki Udagawa, Hiroshi Akema
  • Patent number: 6281293
    Abstract: The present invention is directed to a polymer blend having improved properties comprising: (A) 90 to 10% by weight of a thermoplastic or thermosetting resin; and (B) 10 to 90% by weight of a shear-treated rubber obtained by subjecting a nitrile group-containing highly saturated copolymer rubber to a high-shear treatment in the presence of an anti-oxidant so as to lower the Mooney viscosity of the copolymer rubber by 15 units or more, said shear-treated rubber having a Mooney viscosity of 5 to 135, a molecular weight distribution (Mw/Mn) of 3.0 to 5.0 and a storage stability characterized by that the incremental increase in the Mooney viscosity of said shear-treated rubber during a 30 day storage under an ambient condition in air is not more than 10 units.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: August 28, 2001
    Assignee: Nippon Zeon Co., Ltd.
    Inventor: Yoshinori Fujii
  • Patent number: 6277481
    Abstract: An adhesive composition comprising a pressure sensitive adhesive component (A), a thermosetting adhesive component (B) and a compound (C) obtained by addition/condensation reaction of a polysiloxane oligomer with a silane coupling agent. This composition is excellent in storage stability and can bond metals, etc. with large bonding strength. Further, sheeting thereof enables simplifying bonding steps.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: August 21, 2001
    Assignee: Lintec Corporation
    Inventors: Takashi Sugino, Hideo Senoo, Yasukazu Nakata
  • Patent number: 6262178
    Abstract: This invention is based upon the discovery that cyclized polyisoprene polymers can be incorporated into tire tread compounds to improve traction, treadwear, and resistance to tear. It is further based upon the discovery that cyclized polyisoprene polymers can be blended with halobutyl rubber and/or natural rubber and can be utilized in tire innerliner formulations. The present invention more specifically discloses a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, and wherein said tread is comprised of a sulfur cured rubber composition which is comprised of about 5 phr to about 50 phr of cyclized polyisoprene and about 50 phr to about 95 phr of at least one other rubbery polymer.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: July 17, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul Harry Sandstrom, Joseph Frank Geiser, Judy Chu, David John Zanzig, Richard George Bauer
  • Patent number: 6251996
    Abstract: Gel-type copolymer beads are described which are useful as ion exchange resins such as those used in the treatment of power plant condensate water. The subject copolymer beads possess an interpenetrating polymer network of at least two polymer components including: (i) a first polymer component derived from a first monomer mixture comprising a first monovinylidene monomer having a styrenic content less than about 50 molar percent and (ii) a second polymer component derived from a second monomer mixture comprising: a second monovinylidene monomer having a styrenic content greater than about 50 molar percent and a second crosslinking agent. The ratio of the molar percent crosslinking agent of the first polymer component to the second polymer component is less than about 0.7. Methods for making the subject beads and methods for their use as ion exchange resins for treating aqueous solutions are also provided.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: June 26, 2001
    Assignee: The Dow Chemical Company
    Inventors: James R. Stahlbush, Kenneth L. Foster
  • Patent number: 6242534
    Abstract: A rubber mixture containing at least one rubber component, at least one filler, and conventional additives that it contain at least one first gel as a filler, which is essentially comprised of a rubber, has a particle size of 3×10−9 to 1×10−6 m, and has a swelling index in toluene of 1 to 15, and at least the surface of this gel has acid or base groups, where these groups have not been produced by means of reaction with dithiophosphoric acid, and comprises: a) at least one second gel as an additional filler, which is essentially comprised of a rubber, has a particle size of 3×10−9 to 1×10−6 m, and has a swelling index in toluene of 1 to 15, which is in a position to undergo a neutralization reaction with the acid or base groups of the first gel and/or b) contains at least one substance as an additional additive, which is capable of undergoing a neutralization reaction with the acid or base groups of at least one gel.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: June 5, 2001
    Assignee: Continental Aktiengesellschaft
    Inventors: Werner Obrecht, Thomas Scholl, Peter Wendling, Michael Well, Victor Monroy
  • Patent number: 6218473
    Abstract: The present invention relates to a sulfur cured rubber composition particularly suited for use in tire treads. The sulfur cured rubber composition is composed of, based on 100 parts by weight of rubber, from about 1.0 to 15 parts by weight of a chlorosulfonated polyethylene; from about 1.0 to 15 parts by weight of a carboxylated nitrile rubber; and 98 to 70 parts by weight of a rubber selected from the group consisting of medium vinyl polybutadiene, styrene-butadiene rubber, synthetic cis-1,4-polyisoprene, synthetic 3,4-polyisoprene, natural rubber, cis-1,4-polybutadiene, styrene-isoprene rubber, styrene-isoprene-butadiene rubber, acrylonitrile-butadiene rubber and mixtures thereof.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: April 17, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Paul Harry Sandstrom
  • Patent number: 6060553
    Abstract: Elastomeric particles, which have a tendency to agglomerate, are rendered non-agglomerating by contacting those particles with an aqueous solution or dispersion of a polyurethane rubber, a high Mooney viscosity, high gel content rubber and/or a soap, and optionally a polar binder, separating the coated elastomeric particles from the solution or dispersion, and then drying the elastomeric particles while keeping the coated particles in motion.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: May 9, 2000
    Assignee: Zeon Chemicals Incorporated
    Inventors: John P. Lenczyk, August H. Jorgensen, Jr., Jayant R. Angal, Leland B. Kliever
  • Patent number: 6043318
    Abstract: Disclosed is a process for the making a polyvinylchloride/acrylonitrile-butadiene rubber blend by a) coating a polyvinylchloride resin with a stabilizer to form a precoated PVC; b) blending said precoated PVC with one or more acrylonitrile-butadiene rubbers to form a prestabilized NBR/PVC blend; and c) applying heat and pressure to intimately blend said prestabilized NBR/PVC blend into a fluxed NBR/PVC blend. Another aspect is a novel polyvinylchloride/acrylonitrile-butadiene rubber blend having a stabilizer homogeneously and uniformly distributed throughout the microscopic polyvinylchloride domains.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: March 28, 2000
    Inventors: Christopher John Hardiman, George Thomas McKenzie, Lothar Frank Stiberth
  • Patent number: 6037415
    Abstract: A composition for use in the finishing of a polymer surface comprises a dry, stable homogeneous mixture of pigment and a thermoplastic resin compatible with the polymer surface. The homogeneous mixture is soluble in a solvent to form a lacquer, for application to the surface, that has a colour determined by the amount and chromatic characteristics of the pigment in the dry mixture. The composition can be delivered to a customer and conveniently mixed on site to produce a lacquer having the desired colour characteristics.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: March 14, 2000
    Assignee: Stuart Plastics Ltd.
    Inventor: Gordon Pawelchak
  • Patent number: 6013732
    Abstract: The present invention provides a stainproofing agent having the durability capable of maintaining sufficient water- and oil-repellency as well as stainproofing properties before and after cleaning. Disclosed is a stainproofing agent containing (A) a fluroalkyl group-containg copolymer having (I) a structure unit derived from a monomer having a fluoroalkyl group, (II) a structure unit derived from a monomer containing no fluorine, (III) a structure unit derived from vinyl chloride, and (IV) a structure unit derived from a crosslinking monomer; (B) a urethane compound having a fluoroalkyl group, or a copolymer having (V) a structure unit derived from a monomer having a fluoroalkyl group and a carbon-carbon double bond, and (VI) a structure unit derived from a monomer which contains no fluorine atom and has at least one urethane or urea linkage and one carbon-carbon double bond; and (C) an acrylic copolymer containing no fluorine.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: January 11, 2000
    Assignee: Daikin Industries Ltd.
    Inventors: Masayuki Yamana, Ikuo Yamamoto, Teruyuki Fukuda
  • Patent number: 5874521
    Abstract: A reactive, powdered polymeric material, the polymeric material comprising polymer particles (i) having an average particle size less than about 1000 .mu.m; (ii) which are made up of a plurality of smaller particles; and (iii) having energy stored therein. A process for producing the powdered polymeric material is described. The process comprises the steps of: (i) placing polymeric material in a milling chamber equipped with impact means; (ii) accelerating the impact means to at least about 50 ml/s.sup.2 ; (iii) impacting the polymeric material with the impact means; (iv) repeatedly welding and fracturing the polymeric material; and (v) repeating Steps (ii), (iii) and (iv) until a powdered polymeric material is produced having an average particle size less than about 1000 .mu.m. During Steps (iii) and (iv), the temperature of the milling chamber is maintained below the glass transition temperature of the polymeric material.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: February 23, 1999
    Assignee: University Technologies International Inc.
    Inventor: William J.D. Shaw
  • Patent number: 5472995
    Abstract: Improved asbestos-free fiber reinforced material for use in the manufacture of gaskets, and the like, comprises (a) an elastomeric binder material and (b) a blend of fibrillated, organic, synthetic polymer, organic synthetic polymer staple and organic synthetic, soluble polymer particles so as to enhance the strength of the gaskets, shock mountings, timing belts, sealants, and the like, made from such materials.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: December 5, 1995
    Assignee: Cytec Technology Corp.
    Inventors: Stanley S. Kaminski, Robert E. Evans
  • Patent number: 5446098
    Abstract: A covulcanizable rubber composition including a partially hydrogenated unsaturated nitrile-conjugated diene copolymer having an iodine value not larger than 120, a chlorinated ethylene-propylene copolymer and a vulcanizer. The composition exhibits an improved processing property when mixed, and provides a vulcanized rubber having an improved constant-elongation fatigue resistance.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: August 29, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Hideo Fukuda, Haruhiko Fujita, Hideyoshi Shimoda, Shiryu You
  • Patent number: 5434218
    Abstract: Rubber-modified, impact-resistant molding materials contain, based on the sum of A, B1 and B2,A: from 70 to 98% by weight of a polymer matrix A formed by free radical polymerization of a mixture of from 60 to 90% by weight of styrene and from 10 to 40% by weight of acrylonitrile,B1: from 1 to 29% by weight of a particulate, first graft copolymer B1 which is distributed in the matrix A and consists of a grafting base of polybutadiene and grafts of a copolymer of styrene and acrylonitrile having a mean particle size of about 100-500 nm, andB2: from 1 to 29% by weight of a particulate, second graft copolymer B2 distributed in the matrix A and consisting of a grafting base of polybutadiene and grafts of a copolymer of styrene and acrylonitrile having a mean particle size of from 600 to 10,000 nm, as obtained if both graft copolymers have been prepared by solution and/or mass polymerization and have been incorporated in the polymer matrix in a conventional manner.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: July 18, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Ehrenfried Baumgartner, Juergen Hofmann, Rudolf H. Jung, Rainer Moors, Hansjoerg Schaech
  • Patent number: 5387631
    Abstract: Rubber compositions for use in pneumatic tire treads. Specified amounts of NR and/or IR and SBR are combined with a selected class of rubber components of the formula ##STR1## SBR contains in its molecular chains one or more atomic groups of the formula ##STR2## Rebound resilience, skid resistance and fuel saving are greatly improved.
    Type: Grant
    Filed: May 19, 1993
    Date of Patent: February 7, 1995
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Kinya Kawakami, Atsushi Kanazawa
  • Patent number: 5367048
    Abstract: A polymer alloy material is produced by a process including the step of heating a powdered precursor material comprising polymer particles having an average particle size less than about 1000 .mu.m to a temperature less than the melting point of the polymer at a pressure of at least about 5 MPa to produce the polymer alloy material. Preferably the powdered precursor material is produced by mechanically milling a polymer to provide a powdered precursor material having an average particle size in the range of from about 0.5 .mu.m to about 200 .mu.m. The invention is particularly suited for processing a single polymer or a mixture of two or more polymers which are otherwise difficult to process at a temperature less than the melting point of the polymer.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: November 22, 1994
    Assignee: University Technologies International Inc.
    Inventor: William J. D. Shaw
  • Patent number: 5266640
    Abstract: An ozone and heat resistant polymer blend prepared from a first solid, high acrylonitrile nitrile/conjugated diene copolymer and a second, solid, fully hydrogenated nitrile/conjugated diene copolymer, blended in a ratio of about 70:30 to about 50:50.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: November 30, 1993
    Assignee: DSM Copolymer, Inc.
    Inventors: Rudolph Karg, Connie L. Hill
  • Patent number: 5225479
    Abstract: The present invention relates to a polymer resulting from the copolymerization of at least three monomers. From about 40 to 84 weight percent of the polymer is derived from a conjugated diolefin, from about 15 to 50 weight percent of the polymer is derived from a vinyl substituted aromatic compound and from about 1 to 8 weight percent of the polymer is derived from an olefinically unsaturated nitrile. These polymers may be added to a tread rubber stock for improved wet traction and improved abrasion resistance.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: July 6, 1993
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Michael L. Senyek, Howard A. Colvin
  • Patent number: 5112910
    Abstract: Process for the preparation of mixtures of thermoplastic polymers in powder form from aqueous emulsions ofa) particulate, partly crosslinked rubber-like copolymers of a C.sub.2 -C.sub.8 -alkyl acrylate and/or butadiene with (based on the copolymer) up to 40 wt. % acrylonitrile, styrene or C.sub.1 -C.sub.4 -alkyl methacrylate,b) a thermoplastic resin, and if appropriatec) a rubber-rich graft polymer of styrene, .alpha.-methylstyrene, acrylonitrile, methyl methacrylate and/or alkyl acrylate on a diene or alkyl acrylate rubber having a rubber content of 50 to 95 wt. %,wherein aqueous emulsions of a) and b) and if appropriate c) having polymer contents of 15 to 50 wt. % are mixed with a coagulate solution simultaneously, but in separate streams, continuously or semi-continuously at 20.degree. to 100.degree. C., the polymers a) and b) and if appropriate c) being coagulated, the streams are combined and the polymer mixture is then separated off.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: May 12, 1992
    Assignee: Bayer AG
    Inventors: Karl-Erwin Piejko, Christian Lindner, Ralph Ostarek, Hans-Eberhard Braese, Karl-Heinz Ott
  • Patent number: 5106919
    Abstract: Compatible mixtures of styrene copolymers of type SAN (AES, ABS, SAN) with polyglutarimides, characterized in that the polyglutarimides are prepared by imidization of poly(meth)acrylates and/or poly(meth)acrylic acid with amides of formulaX--Z--NHRwhereX=H, hydrocarbyl or, when ##STR1## a --NHR radical or a --Y--CO--NHR radical; R=aryl; ##STR2## --C.sub.6 H.sub.4 --SO.sub.2. The mixtures composed of SAN copolymers and N-aryl polyglutarimides having a Tg of at least 140.degree. C. are claimed as new mixtures.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: April 21, 1992
    Assignee: Mountedipe S.r.l.
    Inventors: Luciano Canova, Giorgio Giannotta, Enrico Albizzati
  • Patent number: 5098777
    Abstract: A compressed non-asbestos sheet is formed with a body between starter and finish layers. The body has novaloid and aramid fibers in an amount more than 5% and less than 25% by weight of the total sheet. The body also includes elastomeric binders, fillers and rubber processing chemicals. The starter and finish layers include aramid fibers, elastomeric binders with a release agent, fillers and rubber processing chemicals.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: March 24, 1992
    Assignee: Durable Canada Ltd.
    Inventor: Vasant M. Koli
  • Patent number: 4972022
    Abstract: A rubber composition having excellent cut resistance and chipping resistance comprises 1-30 parts by weight of a particular resin obtained by reacting a particular hydroxyl group-containing cyclopentadiene resin with a compound selected from polyisocyanate and/or polybasic acid or its anhydride or ester at a particular equivalent ratio, based on 100 parts by weight of rubber.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: November 20, 1990
    Assignees: Bridgestone Corporation, Nippon Oil Company Limited
    Inventors: Hitoshi Kondo, Makoto Sasaki, Yukio Kobayashi
  • Patent number: 4954571
    Abstract: The invention provides a rubber dispersed copolymer resin having excellent heat resistance, impact strength and moldability and composed of (1) a dispersed phase formed of a rubbery polymer and copolymerized styrene-type, acrylonitrile-type and maleimide-type monomers, said rubbery polymer specificaly controlled occluding the copolymer of monomers, being grafted with the copolymer and/or forming a multicomponent gel together with copolymers, and (2) a continuous phase formed at least of a specifically controlled copolymer of the styrene-type, acrylonitrile-type and maleimide-type monomers. The resin is useful as a molding material for electric appliances, electronic equipment and cars.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: September 4, 1990
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Mune Iwamoto, Norifumi Ito, Sugazaki: Kazuo, Tetsuyuki Matsubara, Toshihiko Ando
  • Patent number: 4897440
    Abstract: An improved, abrasion-resistant rice hulling roll comprises a core with coating of a nitrile rubber compound, particularly a carboxylated nitrile rubber compound. The hulling rolls of this invention are characterized by substantially improved wear life as compared to conventional rolls made of styrene-butadiene rubber (SBR). The nitrile rubbers are also useful in other wear-resistant applications.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: January 30, 1990
    Inventor: Ching-Tsan Lo
  • Patent number: 4885342
    Abstract: Thermoplastic polymer mixture with a high surface gloss on the basis of:a 50-95 wt. % ofa.1 20-90 wt. % of a copolymer of styrene and/or .alpha.-methyl-styrene with acrylonitrile with an acrylonitrile content of 18-27 wt. %, the copolymer having a fluidity of 3-20;a.2 5-60 wt. % of a copolymer of styrene and .alpha.-methyl-styrene with acrylonitrile with an acrylonitrile content of 25-40 wt. %, the copolymer having a fluidity of at least 25;a.3. 0-30 wt. % of a polyacrylate compound;b 5-50 wt. % ofb.1 a substantially saturated rubber andb.2 chlorinated polyethylene.The thermoplastic polymer mixture not only has a high surface gloss, but also the flow of the mixture has been improved substantially. As a result, the mixture has excellent processing characteristics.
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: December 5, 1989
    Assignee: Stamicarbon B.V.
    Inventor: Reinier G. Bakker
  • Patent number: 4837281
    Abstract: The invention is specifically concerned with an improvement in the process of manufacturing reinforced materials. The reinforced materials are conceived to include a wide variety of materials, the most notable being high density compressed gaskets. The improvement comprises mixing a cut solid (generally a cut fiber) with a body material to produce the reinforced materials. The solid is cut into particulates of highly variable size, the range in the size of the particulates being adjusted to optimize the characteristics of the resulting reinforced material. The cut solid is produced utilizing comminuting machines previously used for the recycle of waste products.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: June 6, 1989
    Assignee: BASF Corporation
    Inventors: Billy B. Hibbard, Joe A. Mann, Frans P. P. Koeleveld, Agnes K. Potepan, Richard E. White, Barry T. Knight, Howard H. Bryant
  • Patent number: 4824907
    Abstract: Moulded articles of uniform wall thickness are prepared by vacuum-forming or thermoforming a composition comprising a uniform blend of, as base resin, a moulding grade resin having a continuous phase of a first copolymer of a styrenic monomer and an ethylenically unsaturated nitrile and a minor proportion of, as additive resin, a second copolymer of a styrenic monomer and an ethylenically unsaturated nitrile having an ultra high molecular weight, the forming operation being carried out at least 50.degree. C. above the glass transition temperature of the base resin and at a stress level of at most 1 MPa.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: April 25, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Harmen Z. K. Coster
  • Patent number: 4791172
    Abstract: The invention relates to a process for the preparation of partially hydrogenated nitrile rubbers with defined residual double bond contents of between 2.0 and 5.0%, preferably 3.0 and 4.5%.
    Type: Grant
    Filed: October 2, 1987
    Date of Patent: December 13, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Johann Hohn, Franz-Josef Mersmann, Werner Obrecht, Zsolt Szentivanyi
  • Patent number: 4789697
    Abstract: Into a material based on a caoutchouc-type or caoutchouc-containing mixture for producing hard rubber, there is incorporated a pre-mix containing high-strength organic fibers and a liquid hardenable plastic material. The high-strength and temperature resistant material thus obtained is particularly suitable for the attenuation of noise in combustion engines when heavy-weight fillers are also added to such material. Engine components like, for example, valve covers, timing gear covers and oil pans can be manufactured from this material.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: December 6, 1988
    Assignee: Semperit AG
    Inventors: Josef Affenzeller, Wolf-Dieter Jost
  • Patent number: 4713420
    Abstract: Rubber modified styrene-acrylonitrile polymers (ABS) having three different types of rubber particles. One type is small, usually emulsion-produced particle. The second is a large emulsion-produced particle. The third is a large, mass-produced particle. Such compositions exhibit good combinations of toughness and gloss.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: December 15, 1987
    Assignee: The Dow Chemical Company
    Inventor: David E. Henton