Patents Represented by Attorney, Agent or Law Firm Saul R. Bresch
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Patent number: 5410003Abstract: A process for the production of a homogeneous polyethylene comprising contacting ethylene, one or more alpha-olefins, and one or more unconjugated dienes, under polymerization conditions, with a catalyst system comprising:(A ) a modified supported vanadium based catalyst precursor;(B) an alkylaluminmn halide cocatalyst; and(C) a promoter consisting of an unsaturated aliphatic halocarbon or a haloalkyl substituted aromatic hydrocarbonwith the proviso that sufficient unconjugated diene is present to provide in the homogeneous polyethylene about 0.01 to less than about one percent by weight diene.Type: GrantFiled: March 31, 1994Date of Patent: April 25, 1995Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Xinlai Bai
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Patent number: 5405219Abstract: An article of manufacture comprising (i) a double cone having apexes at opposite ends, said double cone having independent gas inlet means at about the apex of the first cone and multiple independent gas outlet means in the second cone, and (ii) a hollow tube, open at both ends, inside the double cone running from one apex to the other apex having independent gas inlet means at the apex of the first cone and independent gas outlet means at the apex of the second cone.Type: GrantFiled: May 18, 1994Date of Patent: April 11, 1995Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Duan-Fan Wang
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Patent number: 5405901Abstract: A gas phase process for the production of a polyethylene blend comprising contacting ethylene and at least one alpha-olefin comonomer having 3 to 8 carbon atoms with a magnesium/titanium based catalyst system including an activator and a cocatalyst in each of two fluidized bed reactors connected in series, under polymerization conditions, with the provisos that:(a) the mixture of ethylene copolymer matrix and active catalyst formed in the first reactor in the series is transferred to the second reactor in the series;(b) other than the active catalyst referred to in proviso (a) and the cocatalyst referred to in proviso (e), no additional catalyst is introduced into the second reactor;(c) in the first reactor in which a low melt index copolymer is made:(1) the alpha-olefin is present in a ratio of about 0.01 to about 0.4 mole of alpha-olefin per mole of ethylene;(2) optionally, hydrogen is present in a ratio of about 0.001 to about 0.Type: GrantFiled: July 6, 1994Date of Patent: April 11, 1995Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Paul T. Daniell, Michael W. Tilston, Thomas E. Spriggs, Burkhard E. Wagner, Arakalgud V. Ramamurthy
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Patent number: 5380591Abstract: 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, blended therewith, (b) a mixture containing one or more alkylhydroxyphenylalkanoyl hydrazines and one or more functionalized hindered amines; and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.Type: GrantFiled: December 30, 1992Date of Patent: January 10, 1995Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Michael J. Keogh, Geoffrey D. Brown
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Patent number: 5376743Abstract: A process for the production of EPM or EPDM comprising contacting ethylene, propylene, and, optionally, one or more dienes, in a fluidized bed, at a temperature at or above the sticking temperature of the product resin, under polymerization conditions, with(i) a prepolymer containing a transition metal catalyst precursor with the proviso that the prepolymer is not sticky at the process temperature;(ii) a hydrocarbyl aluminum and/or a hydrocarbyl aluminum halide cocatalyst,; and, optionally,(iii) a halocarbon promoter; and, optionally,(iv) an inert particulate material having a mean particle size in the range of about 0.01 to about 150 microns wherein the particulate material is either contained in the prepolymer or is independent of the prepolymer,wherein the amount of prepolymer or the combined amount of prepolymer and inert particulate material is sufficient to essentially prevent agglomeration of the fluidized bed and the product resin.Type: GrantFiled: March 11, 1993Date of Patent: December 27, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Edgar C. Baker, Jose F. Cevallos-Candau, Fathi D. Hussein, Kiu H. Lee, Allen Noshay
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Patent number: 5371145Abstract: A process comprising continuously contacting with a catalyst, under polymerization conditions, ethylene or a mixture comprising ethylene and one or more alpha-olefins in a first fluidized bed reactor and a mixture comprising ethylene and one or more alpha-olefins in a second fluidized bed reactor, the first and second reactors being connected in series, said catalyst comprising:(A) a catalyst precursor comprising:(i) a vanadium compound, which is the reaction product of(a) VX.sub.3 wherein each X is independently chlorine, bromine, or iodine; and(b) an electron donor, which is a liquid, organic Lewis base in which VX.sub.3 is soluble;(ii) a modifier having the formula BX.sub.3 or AlR.sub.(3-a) wherein each X is as defined above; each R is independently alkyl having 1 to 14 carbon atoms; and a is 1 or 2; and(iii) a silica or alumina support for said vanadium compound and modifier;(B) a cocatalyst having the formula AlR.sub.3 wherein R is as defined above; and(C) a promoter having the formula R'.sub.b CX'.sub.Type: GrantFiled: June 8, 1993Date of Patent: December 6, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Paul T. Daniell, William D. Heitz, Thomas E. Spriggs, Thomas J. McNeil, Kevin J. Cann
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Patent number: 5367037Abstract: A process for the production of EPDM comprising reacting ethylene, propylene, ethylidene norbornene, and hydrogen, in the gas phase, in a fluidized bed, under polymerization conditions, in the presence of a catalyst system comprising:(a) the reaction product of a vanadium compound and a electron donor;(b) at least one modifier having the formula BX.sub.3 or AlR.sub.(3-a) X.sub.a wherein each R is alkyl or aryl and is alike or different; each X is independently chlorine, bromine, or iodine; and a is 0, 1, or 2,wherein components (a) and (b) are impregnated into an inorganic support;(c) a halocarbon promoter; and(d) a hydrocarbyl aluminum cocatalyst with the following proviso:(i) the partial pressure of ethylene is in the range of about 25 to about 200 psi;(ii) the molar ratio of propylene to ethylene is in the range of about 0.2:1 to about 2:1;(iii) the molar ratio of hydrogen to ethylene is in the range of about 0.0001:1 to about 0.01:1; and(iv) the amount of ethylidene norbornene is about 1.Type: GrantFiled: March 31, 1994Date of Patent: November 22, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Kiu H. Lee, Mahmoud R. Rifi, Mark J. Kriss, Han-Tai Liu
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Patent number: 5362823Abstract: In a transition metal catalyst system, the improvement comprising including in the catalyst system an autoacceleration inhibitor, which (i) at about the temperature at which the catalyst system autoaccelerates, decomposes into a poison for the catalyst system; (ii) is present in the catalyst system in an amount sufficient to provide the quantity of poison required to inhibit the autoacceleration of the catalyst system at the autoacceleration temperature; and (iii) is either essentially inert at the normal operating temperature of the catalyst system or will cause substantially less inhibition of the catalyst system at the normal operating temperature than at the autoacceleration temperature.Type: GrantFiled: March 6, 1990Date of Patent: November 8, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Frederick J. Karol, Kao Sun-Chueh, James S. Drage
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Patent number: 5346961Abstract: A process for crosslinking comprising (a) introducing into a reactor, under crosslinking conditions, a mixture comprising(i) one or more polyolefins;(ii) organic peroxide;(iii) an ester, ether, or ketone containing two or more unsaturated groups; and(iv) a compound having the formula: ##STR1## wherein R=hydrogen, methyl, or ethyl; R.sup.1 =an alkylene having 1 to 6 carbon atoms;andR.sup.2 =an alkyl having 8 or more carbon atoms or Si(R.sup.3).sub.3 wherein R.sup.3 is hydrogen or alkoxy having 1 to 6 carbon atoms; each R.sup.3 is the same or different; and at least one R.sup.3 is an alkoxy,and (b) crosslinking the polyolefin(s).Type: GrantFiled: April 7, 1993Date of Patent: September 13, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Richard G. Shaw, Paul J. Caronia
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Patent number: 5342907Abstract: A process comprising contacting a mixture comprising ethylene, propylene, and, optionally, a diene, in the gas phase, under polymerization conditions, with a catalyst system comprising:(a) a catalyst precursor, in independent or prepolymer form, consisting of vanadium (acetylacetonate).sub.3 ;(b) optionally, a support for said precursor;(c) a cocatalyst consisting essentially of (i) an alkylaluminum halide having the formula AlR.sub.(3-a) X.sub.a wherein each R is independently alkyl having 1 to 14 carbon atoms; each X is independently chlorine, bromine, or iodine; and a is 1 or 2, and (ii) optionally, a trialkylaluminum provided that the molar ratio of alkylaluminum halide to trialkylaluminum is at least about 1.Type: GrantFiled: June 28, 1993Date of Patent: August 30, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Kevin J. Cann, Fathi D. Hussein, Kiu H. Lee, Daniel P. Zilker, Jr., James W. Nicoletti, Xinlai Bai
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Patent number: 5332793Abstract: A process for the production of EPRs comprising contacting ethylene, propylene, and optionally, a diene, under polymerization conditions, with a catalyst system comprising:(A) a catalyst precursor comprising:(i) a vanadium compound, which is the reaction product of(a) VX.sub.3 wherein each X is independently chlorine, bromine, or iodine; and(b) an electron donor, which is a liquid, organic Lewis base in which VX.sub.3 is soluble;(ii) a modifier having the formula BX.sub.3 or AlR.sub.(3-a) X.sub.Type: GrantFiled: June 28, 1993Date of Patent: July 26, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Kevin J. Cann
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Patent number: 5326602Abstract: A pre-formed composition having essentially no yield point comprising a blend of:(a) at least about 50 percent by weight of a copolymer of ethylene and a 4 to 8 carbon atom alpha-olefin having a density in the range of 0.880 to 0.915 gram per cubic centimeter; a melt index of no greater than about one gram per 10 minutes; long chain branching in an amount of about 0.5 to about 1.5 long chains per 1000 carbon atoms; and a molecular weight of at least about 200,000; and(b) at least about 5 percent by weight of a copolymer of ethylene and vinyl acetate or a copolymer of ethylene and ethyl acrylate, the percent by weight being based on the combined weight of components (a) and (b).Type: GrantFiled: December 1, 1992Date of Patent: July 5, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Mahmoud Rifi
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Patent number: 5324798Abstract: A finishing process for a polymer containing an active catalyst residue. Starting polymer has a crystallinity of less than 10 percent by weight and is maintained in an essentially oxygen free reaction zone at a temperature less than polymer sticking temperature. The polymer is stabilized and acids neutralized by adding 2, 6-di-tert-butyl-4-alkyl phenol and/or alkyl -3-(3-5 -di-tert-butyl-4-hydroxy phenyl)- propionate and zinc oxide, hydrotalcite, or a zeolite. Resulting polymer is then treated with catalyst deactivators including water, and then mixed with photo-oxidative stabilizers.Type: GrantFiled: December 28, 1992Date of Patent: June 28, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Janice E. Sanders, George N. Foster, Edgar C. Baker, Robert J. N. Bernier
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Patent number: 5296534Abstract: A flame retardant composition comprising:(i) a thermoplastic resin;(ii) magnesium hydroxide; and(iii) an organopolysiloxane modified styrene elastomer.Type: GrantFiled: January 11, 1993Date of Patent: March 22, 1994Assignee: Nippon Unicar Company LimitedInventors: Akitaka Senuma, Nobuo Yasuda, Isao Noda
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Patent number: 5288933Abstract: A process for the polymerization of ethylene or a mixture comprising ethylene and one or more alpha-olefins and, optionally, a diene, comprising passing, under polymerization conditions, the aforementioned monomer(s) into contact with a catalyst system comprising:(a) the reaction product of(i) a titanium based catalyst precursor having the formula Mg.sub.a Ti(OR).sub.b X.sub.c (ED).sub.d whereinED is an inside electron donor comprising a mixture of (A) about 1 to about 80 mole percent of an alkyl, alkoxy, aryl, or aryloxy phosphine oxide, or mixtures thereof, and (B) about 20 to about 99 mole percent of an organic ester, ether, or ketone, or mixtures thereof, said phosphine oxide also being present in a molar ratio of phosphine oxide to titanium of 0.Type: GrantFiled: April 16, 1992Date of Patent: February 22, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Sun-Chueh Kao, Frederick J. Karol
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Patent number: 5288785Abstract: A flame retardant composition comprising:(i) a linear polyethylene having a density equal to or less than 0.915 gram per cubic centimeter;(ii) a linear polyethylene having a density in the range of 0.916 to 0.925 gram per cubic centimeter, grafted with an unsaturated aliphatic diacid anhydride, said polyethylene being present in an amount of about 40 to about 400 parts by weight based on 100 parts by weight of component (i); and(iii) magnesium hydroxide, surface treated with an organic phosphate ester or a salt thereof in an amount of about 0.1 to about 4 parts by weight of ester per 100 parts by weight of magnesium hydroxide, said magnesium hydroxide being present in an amount of about 90 to about 400 parts by weight based on 100 parts by weight of component (i).Type: GrantFiled: June 14, 1993Date of Patent: February 22, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jinder Jow, Sundaresan Ramachandran, Michael J. Keogh
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Patent number: 5262467Abstract: A composition comprising:(a) polyethylene having a density equal to or less than 0.915 gram per cubic centimeter grafted with an unsaturated aliphatic diacid anhydride; and(b) magnesium hydroxide, the surface of which is untreated.Type: GrantFiled: November 12, 1992Date of Patent: November 16, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Michael J. Keogh, Jinder Jow
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Patent number: 5227438Abstract: A process for terminating or retarding the rate of polymerization of propylene or a mixture comprising propylene and one or more other olefin monomers, in a gas phase reactor, in the presence of a catalyst system comprising (i) a solid catalyst precursor composition which includes magnesium, titanium, halogen, and carboxylic acid ester; (ii) hydrocarbyl aluminum cocatalyst; and (iii) a silicon compound containing at least one silicon-oxygen-carbon linkage, which comprises introducing a phthalate compound at a rate and in a sufficient quantity to substantially retard or terminate the said polymerization reaction.Type: GrantFiled: September 24, 1991Date of Patent: July 13, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: David M. Rebhan
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Patent number: 5211746Abstract: A composition comprising:(a) polyethylene having a density equal to or less than 0.925 gram per cubic centimeter, grafted with an unsaturated aliphatic diacid anhydride; and(b) magnesium hydroxide, surface treated with a saturated or unsaturated carboxylic acid or a metal salt thereof in an amount of about 0.1 to about 1 part by weight of acid or salt per 100 parts by weight of magnesium hydroxide.Type: GrantFiled: June 22, 1992Date of Patent: May 18, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Michael J. Keogh, Jinder Jow
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Patent number: 5204402Abstract: A multipurpose additive system comprising(a) an alkali metal zeolite, an alkaline earth metal zeolite, zinc zeolite, or mixtures thereof;(b)(i) an aliphatic compound containing at least six carbon atoms substituted with one or more polar functional groups sufficient to provide a polar group frequency factor of at least about 0.01; or(ii) a polydimethylsiloxane compound containing from 4 to about 500 siloxane units, substituted with one or more polar functional groups sufficient to provide a polar group frequency factor of at least about 0.01; or(iii) mixtures thereof in any proportion; and(c) optionally, zinc oxide.Type: GrantFiled: December 11, 1990Date of Patent: April 20, 1993Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: George N. Foster, Anthony J. Gioffre