Patents Represented by Attorney, Agent or Law Firm Saul R. Bresch
  • Patent number: 6248831
    Abstract: A process for production of a polyethylene blend in situ comprising contacting ethylene and at least one alpha-olefin with a magnesium/titanium based catalyst system including a partially activated precursor and a cocatalyst in each of two fluidized bed reactors connected in series, one of the provisos being that the precursor is formed by contacting an alkylaluminum halide with a solid reaction product prepared from a magnesium alkoxide, a titanium tetraalkoxide, and a solubility enhancing agent.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: June 19, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Vinayak Maheshwari, Robert Charles Job, William A. Hoffman, III, William James Michie, Jr.
  • Patent number: 6232377
    Abstract: A flame retardant composition comprising (A) about 50 to about 95 percent by weight of at least one ethylene co-polymer selected from an ethylene/vinyl ester copolymer; ethylene/alpha, beta unsaturated carboxylate copolymer; and very low density ethylene/alpha-olefin copolymer; and (B) about 5 to about 50 percent by weight of an ethylene/alpha-olefin copolymer having been prepared with a single site catalyst, and, for each 100 parts by weight of component (A) and component (B) combined, (C) about 2 to about 50 parts by weight of a polyethylene modified with a functional group containing compound; (D) about 5 to about 250 parts by weight of a metal hydrate; (E) about 1 to about 12 parts by weight of a triazine ring containing compound; and (F) about 0.5 to about 5 parts by weight of a flame retardant compound selected from the group consisting of a boron compound, a molybdenum compound, and a silicone.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: May 15, 2001
    Assignee: Nippon Unicar Company Ltd.
    Inventors: Akio Hayashi, Katsuhiro Horita, Koji Ishihara
  • Patent number: 6231978
    Abstract: A composition comprising: polyethylene; as a scorch inhibitor, 2,4-diphenyl-4-methyl-1-pentene; as a cure booster, 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane; and an organic peroxide.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: May 15, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6232376
    Abstract: A moisture curable polyolefin composition comprising: (a) a polyolefin, and for each 100 parts by weight of component (a), (b) 0.1 to 10 parts by weight of an unsaturated alkoxy silane; (c) 0.01 to 2 parts by weight of an organic peroxide; (d) 0.01 to 2 parts by weight of a silanol condensation catalyst; (e) 0.02 to 2 parts by weight of a hindered amine stabilizer; (f) 0.01 to 1 part by weight of a hindered phenol antioxidant; and (g) 0.01 to 1 part by weight of an arylamine antioxidant.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: May 15, 2001
    Assignee: Nippon Unicar Company Ltd.
    Inventors: Kiroku Tsukada, Makoto Okazawa, Ariyoshi Ohki, Hirofumi Yasuda, Yasuo Nomura, Koji Ishihara
  • Patent number: 6203907
    Abstract: A composition comprising polyethylene and, for each 100 parts by weight of polyethylene, about 0.1 to about 3 parts by weight of the reaction product of (i) an aliphatic diacid anhydride or a polymer or copolymer thereof wherein the anhydride has 4 to 20 carbon atoms; and (ii) a polymer selected from the group consisting of a polycaprolactone, a polyalkylene glycol, a monoalkyl ether of a polyalkylene glycol, and a mixture of two or more of said polymers, the weight ratio of component (ii) to component (i) being in the range of about 0.05:1 to about 1:1.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: March 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6191230
    Abstract: A masterbatch composition comprising: (a) a copolymer of ethylene and 1-octene prepared with a metallocene catalyst; (b) as a scorch inhibitor, a substituted hydroquinone; 4,4′-thiobis(2-methyl-6-t-butylphenol); 4,4′-thiobis(2-t-butyl-5-methylphenol); or mixtures thereof; (c) as a cure booster, triallyl trimellitate; 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane; triallylcyanurate; triallyl isocyanurate; or mixtures thereof; and (d) an organic peroxide.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: February 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Michael John Keogh, Jinder Jow
  • Patent number: 6187858
    Abstract: A composition comprising: (a) polyethylene; (b) as a first antioxidant, a thiobisphenol; (c) as a second antioxidant, a compound containing 3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate in the molecule; (d) as a third antioxidant, distearyl thiodipropionate; and (e) an organic peroxide, with the proviso that each antioxidant is present in an amount of about 0.01 to the about 0.2 part by weight and the organic peroxide is present in an amount of about 0.5 to about 3 parts by weight, all per 100 parts by weight of polyethylene.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: February 13, 2001
    Assignee: Nippon Unicar Company Limited
    Inventors: Takeshi Tachikawa, Koji Ishihara, Ariyoshi Ohki
  • Patent number: 6187847
    Abstract: A composition comprising: (a) polyethylene; (b) as a scorch inhibitor, [1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione]; and (c) an organic peroxide.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: February 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Jeffrey Morris Cogen, Laurence Herbert Gross, Michael John Keogh, Joseph Anthony Obal
  • Patent number: 6187866
    Abstract: In a process for the in situ blending of polymers comprising contacting ethylene and one or more comonomers in two or more fluidized bed reactors with a catalyst system comprising (i) a magnesium/titanium based precursor containing an electron donor and (ii) a hydrocarbyl aluminum cocatalyst, the improvement comprising (A) increasing or decreasing the melt flow ratio and/or molecular weight of the blend by, respectively, decreasing or increasing the mole ratio of a precursor activator compound to the electron donor or (B) increasing or decreasing the bulk density of the blend by, respectively, increasing or decreasing the mole ratio of a precursor activator compound to the electron donor, both (A) and (B) subject to defined provisos including partial pre-activation of the precursor.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: February 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert James Jorgensen, Stephanie Marie Upham, James Daniel Madden, William James Michie, Jr.
  • Patent number: 6184299
    Abstract: A process comprising contacting ethylene and at least one alpha-olefin comonomer having with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the proviso that a hydrocarbyl aluminum cocatalyst is introduced into the first reactor and a different hydrocarbyl aluminum cocatalyst or no cocatalyst is introduced into the second reactor.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 6, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: James Daniel Madden, Michael William Tilston
  • Patent number: 6180231
    Abstract: A composition comprising: (a) polyethylene; (b) as a first scorch inhibitor, a substituted hydroquinone or 4,4′-thiobis(2-t-butyl-5-methyl phenol); (c) as a second scorch inhibitor, distearyl disulfide; and (d) an organic peroxide.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: January 30, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6180706
    Abstract: A composition comprising: (a) a low density homopolymer of ethylene prepared by a high pressure process; (b) a scorch inhibitor selected from the group consisting of a substituted hydroquinone; 4,4′-thiobis(2-methyl-6-t-butylphenol); 2,2′-thiobis(6-t-butyl-4-methylphenol); and 4,4′-thiobis(2-t-butyl-5-methylphenol) in an amount of about 0.02 to about 0.07 part by weight of scorch inhibitor per 100 parts by weight of homopolymer; (c) a cure booster; and (d) an organic peroxide.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: January 30, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6177527
    Abstract: A process for the preparation of (i) polyethylene or (ii) polypropylene, which is essentially isotactic or a mixture of atactic and isotactic polypropylenes comprising contacting ethylene or propylene per se, or in admixture with one or more alpha-olefins, under polymerization conditions, with a catalyst system comprising: (a) a precatalyst comprising a mixture of racemic and meso stereoisomers of a metallocene catalyst containing two cycloalkadienyl ligands joined by a bridging linkage, said ligands complexed to a metal atom; and (b) (1) to obtain polyethylene catalyzed by the rac epimer only, a cocatalyst selected from the group consisting of tris(perfluorophenyl)borane and isobutyl alumoxane;  (2) to obtain polyethylene catalyzed by both the rac and the meso epimers, a cocatalyst selected from the group consisting of dimethylanilinium tetrakis(perfluorophenyl)borate and triphenylmethyl tetrakis(perfluorophenyl)borate;  (3) to obtain polypropylene, which is essentially isotactic, a cocatalyst
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: January 23, 2001
    Assignee: Union Carbide Chemical & Plastics Technology Corporation
    Inventors: Purna Chand Sishta, Xinmin Yang, Frederick John Karol
  • Patent number: 6143822
    Abstract: A composition comprising:(a) polyethylene;(b) as a scorch inhibitor, 1,1-diphenylethylene, substituted or unsubstituted;(c) optionally, a cure booster; and(d) an organic peroxide.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: November 7, 2000
    Assignees: Union Carbide Chemicals & Plastics Technology Corporation, Hercules Incorporated
    Inventors: Paul Joseph Caronia, Michael John Keogh, John Salvatore Furno, Laurence Herbert Gross, Frederick F. Nelson, Tuyen T. Nguyen, Atanu Biswas
  • Patent number: 6127482
    Abstract: A composition comprising:(a) polyethylene;(b) a cure booster selected from the group consisting of 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane (DVS); a copolymer of ethylene and DVS; and an ethylene homopolymer or copolymer having DVS grafted thereto; and(c) an organic peroxide.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: October 3, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6127441
    Abstract: An expandable resin composition comprising:(A) 100 parts by weight of HDPE (high density polyethylene) having a DSC melting point of about 127 to about 136 degrees C.; a density of 0.945 to 0.967 gram per cubic centimeter; and a melt flow rate of about 0.1 to about 10 grams per 10 minutes, and for each 100 parts by weight of component (A),(B) about 2 to about 50 parts by weight of polypropylene having a DSC melting point of at least about 130 degrees C.;(C) about 50 to about 200 parts by weight of an ethylene/alpha-olefin copolymer, prepared with a metallocene catalyst, having a DSC melting point of about 98 to about 121 degrees C.; a density of 0.900 to 0.935 gram per cubic centimeter; and a melt flow rate of about 0.5 to about 3 grams per 10 minutes;(D) about 0.1 to about 5 parts by weight of a polysiloxane-polyether block copolymer having the following formula:R.sub.3 --Si--O--R.sub.2 (SiO).sub.m --RX(SiO).sub.n --SiR.sub.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: October 3, 2000
    Assignee: Nippon Unicar Company Limited
    Inventors: Toshio Sakamoto, Koji Ishihara, Takashi Furukawa
  • Patent number: 6124770
    Abstract: An expandable resin composition comprising(A) HDPE (high density polyethylene);(B) a high pressure, low density homopolymer of ethylene (HP-LDPE);(C) polypropylene;(D) a polysiloxane-polyether block copolymer; and(E) a nucleating agent of azodicarbonamide and/or talc.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: September 26, 2000
    Assignee: Nippon Unicar Company Limited
    Inventors: Toshio Sakamoto, Koji Ishihara, Takashi Furukawa
  • Patent number: 6120897
    Abstract: An article of manufacture comprising (i) a plurality of electrical conductors, each surrounded by one or more layers of a composition comprising (a) one or more polyolefins and, bonded thereto or blended therewith, (b) a linear or cyclic organopolysiloxane containing one or more functionalized hindered amine moieties; and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: September 19, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Geoffrey David Brown, Michael John Keogh, Sari Beth Samuels, Jeffrey Morris Cogen
  • Patent number: 6103374
    Abstract: A composition comprising:(a) polyolefin;(b) as a scorch inhibitor, 4,4'-thiobis(2-methyl-6-t-butyl phenol); 2,2'-thiobis(6-t-butyl-4-methylphenol); or mixtures thereof;(c) hydroquinone; a substituted hydroquinone; or mixtures thereof in an amount sufficient to control color formation; and(d) an organic peroxide.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: August 15, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Patent number: 6086792
    Abstract: A semiconducting composition comprising (i) an olefinic polymer and (ii) about 25 to about 45 percent by weight, based on the weight of the composition, of a carbon black having the following properties:(a) a particle size of at least about 29 nanometers;(b) a tint strength of less than about 100 percent;(c) a loss of volatiles at 950 degrees C in a nitrogen atmosphere of less than about 1 weight percent based on the weight of the carbon black;(d) a DBP oil absorption of about 80 to about 300 cubic centimeters per 100 grams;(e) a nitrogen surface adsorption area of about 30 to about 300 square meters per gram or an iodine adsorption number of about 30 to about 300 grams per kilogram;(f) a CTAB surface area of about 30 to about 150 square meters per gram; and(g) a ratio of property (e) to property (f) of greater than about 1.1.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: July 11, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Charles G. Reid, Norman M. Burns, Jr.