Treating In The Presence Of A Metal Or Metal-containing Compound Patents (Class 525/357)
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Patent number: 5373064Abstract: When chlorinating a polyolefin in an aqueous suspension system, a metal salt of an alkyldiphenyl ether disulfonic acid represented by the following formula [I], or together with an anionic surfactant, are each added in an amount of 0.01 to 5% by weight based on the polyolefin, as a suspension stabilizer: ##STR1## (wherein R.sub.1 represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, R.sub.2 is an alkyl group having 6 to 36 carbon atoms, and M is an alkali metal or an alkaline earth metal).Type: GrantFiled: July 1, 1993Date of Patent: December 13, 1994Assignee: Showa Denko K.K.Inventors: Jun Konishi, Kenji Ozaki
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Patent number: 5362817Abstract: A process for preparing linear block and three arm star block copolymers having blocks of polyisobutylene and blocks of anionically polymerizable monomers comprises mixing a first solution of a polyisobutylene having a number average molecular weight of from about 4,000 to about 60,000 and having from 1 to 3 terminal allylic halogens with a second solution of a living alkali metal terminated polymer having a number average molecular weight of from about 4,000 to about 60,000 in relative proportions at a temperature of from about 10.degree. C. to about 80.degree. C. for a period of time of from about 30 minutes to about 24 hours whereby a significant amount of linear block or three arm star block copolymer is formed. A polyisobutylene having from 1 to 3 terminal allylic halogens is provided and a process for preparing said polyisobutylene.Type: GrantFiled: August 18, 1993Date of Patent: November 8, 1994Assignee: Polysar Rubber CorporationInventor: Akhtar Osman
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Patent number: 5340552Abstract: A macroreticulate polymer is provided for removing water vapor and oxidants from a gas having the formula: ##STR1## wherein Ar is a heteroaromatic moiety, M is bonded to the heteroaromatic moiety and is selected from the group consisting of lithium, sodium, potassium, alkyl magnesium, alkyl zinc, and dialkylaluminum, R is an organic moiety and R.sub.1 is a polymerized moiety forming the molecular backbone of said polymer.Type: GrantFiled: September 10, 1992Date of Patent: August 23, 1994Assignee: Millipore CorporationInventor: James T. Snow
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Patent number: 5332790Abstract: This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.Type: GrantFiled: March 8, 1993Date of Patent: July 26, 1994Assignee: Exfluor Research CorporationInventors: Thomas R. Bierschenk, Timothy Juhlke, Hajimu Kawa, Richard J. Lagow
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Patent number: 5322904Abstract: This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.Type: GrantFiled: March 8, 1993Date of Patent: June 21, 1994Assignee: Exfluor Research CorporationInventors: Thomas R. Bierschenk, Timothy J. Juhlke, Hajimu Kawa, Richard J. Lagow
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Patent number: 5322903Abstract: This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.Type: GrantFiled: January 17, 1992Date of Patent: June 21, 1994Assignee: Exfluor Research CorporationInventors: Thomas R. Bierschenk, Timothy Juhlke, Hajimu Kawa, Richard J. Lagow
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Patent number: 5314968Abstract: A polyhalide bactericidal resin, of the demand type, based on halogens, the preponderant being iodine. The release of iodine into the water which is purified is minimized, and contaminated water is rendered safe for human consumption.There are also provided devices for the decontamination of contaminated water, based on the use of the novel resins of the invention.Furthermore there is provided a process for the production of such resins based on the interaction of a strong base anion exchange resin, iodine, an iodine, a bromide and a persulfate oxidizing agent.Type: GrantFiled: February 25, 1993Date of Patent: May 24, 1994Inventors: Moshe A. Frommer, Israel Dalven
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Patent number: 5286804Abstract: A process for halogenating star-branched butyl rubber is provided wherein water and a wetting agent or wetting agent precursor are added to a solution comprising the star-branched butyl rubber, solid particles of branching agent and an organic solvent prior to the neutralization step to increase the rate of neutralization of the hydrogen halide by-product of the halogenation reaction.Type: GrantFiled: September 17, 1991Date of Patent: February 15, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Kenneth W. Powers, Hsien C. Wang, Robert N. Webb, James V. Fusco, Hans F. Vanbrackle, Michael F. McDonald, Jr.
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Patent number: 5242985Abstract: What is described herein is a PVP-I.sub.2 composition comprising strongly swellable, lightly crosslinked PVP complex to iodine, wherein said composition is capable of releasing free iodine slowly with time in the presence of water. Preferably the complex has about 10-15% by weight available iodine and about 4-8 weight % iodide, and is a free-flowing, fine, lightly yellow powder.Type: GrantFiled: June 17, 1992Date of Patent: September 7, 1993Assignee: ISP Investments Inc.Inventors: Jenn S. Shih, John J. Merianos
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Patent number: 5220087Abstract: A fluorinated cation exchange resin catalyst is prepared by contacting a polymer containing pendant acid groups, particularly the radical --SO.sub.3 X with elemental fluorine in the presence of a water-free halogenated hydrocarbon liquid and thereafter converting the resulting pendant --SO.sub.3 X radical to a free acid.Type: GrantFiled: December 13, 1991Date of Patent: June 15, 1993Assignee: Allied-Signal Inc.Inventors: Morris B. Berenbaum, Thomas P. J. Izod, Donald R. Taylor, John D. Hewes
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Patent number: 5093432Abstract: This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.Type: GrantFiled: September 28, 1989Date of Patent: March 3, 1992Assignee: Exfluor Research CorporationInventors: Thomas R. Bierschenk, Timothy Juhlke, Hajimu Kawa, Richard J. Lagow
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Patent number: 5087674Abstract: A process for halogenating polymers by contacting a polymer either in solution or in bulk with a halogenating agent in the presence of an acid scavenger. Halogenated polymer, e.g., butyl rubber, with a particular structure is obtained and the product suffers less molecular weight loss. Combinations of acid scavengers can also be used and the scavenger can be dispersed in the polymer prior to halogenation and/or added to the reaction zone during halogenation.Type: GrantFiled: October 11, 1990Date of Patent: February 11, 1992Assignee: Exxon Research & EngineeringInventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis
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Patent number: 5077345Abstract: A halogenation process is provided for halogenating a polymer, in which process the halogenation reaction product is neutralized by reaction of an aqueous alkaline material in the presence of a critical limited amount of alcohol to increase the neutralization rate.Type: GrantFiled: March 1, 1990Date of Patent: December 31, 1991Assignee: Exxon Chemical Patents Inc.Inventors: Neil F. Newman, Irwin J. Gardner
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Patent number: 5068290Abstract: A process for the chlorination of a polyolefin is provided in accordance with the present invention. This process comprises mixing an anti-coagulant with a finely divided polyolefin, and then subjecting the resulting mixture to a multi-step chlorination in the presence of a free radical generation accelerant.The chlorinated polyolefin so produced is suitable to use as a raw material in the production of many kinds of adhesives.Type: GrantFiled: April 30, 1990Date of Patent: November 26, 1991Inventor: Hee-Dong Kang
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Patent number: 4975496Abstract: Styrenic polymers are brominated by a process comprising dispersing at least one Lewis acid catalyst in at least one inert halogenated solvent and contacting said Lewis acid catalyst dispersion with a solution of at least one ring-brominatable styrenic polymer in at least one inert halogenated solvent and at least one brominating agent.Type: GrantFiled: August 10, 1989Date of Patent: December 4, 1990Assignee: The Dow Chemical CompanyInventors: Ronald G. Tigner, Edward R. Falardeau
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Patent number: 4972026Abstract: A chlorinated terpolymer of a precursor terpolymer containing 3-20 weight percent acrylic acid or methacrylic acid, 3-20 weight percent vinyl acetate and 60-90 weight percent ethylene contains 20-60 weight percent chlorine and has a Brookfield viscosity of about 150-600 cP when measured at 25.degree. C. in xylene solution at a concentration of 25% by weight chlorinated terolymer. The chlorinated terpolymer contains 20-60 and preferably 25-55 weight percent chlorine.Type: GrantFiled: November 25, 1988Date of Patent: November 20, 1990Assignee: E. I. Du Pont de Nemours and CompanyInventors: Adrian R. Armstrong, James W. Dawes
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Patent number: 4933395Abstract: Process for the imidization of vinyl-aromatic copolymers containing maleic anhydride, using as an imidizing agent an amide, the imidization being conducted in an anhydrous state and in the presence of a catalyst.Type: GrantFiled: February 8, 1989Date of Patent: June 12, 1990Assignee: Montedipe S.p.A.Inventors: Luciano Canova, Umberto Giannini, Enrico Albizzati, Antonio Proto
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Patent number: 4879353Abstract: A process for the bromination of polystyrenic homo- and co-polymers using bromine as the reaction medium, bromine chloride as the bromination reagent and a Lewis acid catalyst substantially improves product quality and permits controlling the reaction to achieve a desired level of bromination.Type: GrantFiled: October 28, 1988Date of Patent: November 7, 1989Assignee: Great Lakes Chemical CorporationInventors: David C. Sanders, John L. Sands, Joseph L. Stahl
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Patent number: 4814390Abstract: A chlorinated rubber having a chlorine content of 10 to 45% by weight based on the weight of the chlorinated rubber and a Mooney Viscosity, ML.sub.1+4 (121.degree. C.), of 10 to 190 is obtained by chlorinating an ethylene/alpha-olefin/non-conjugated diene copolymer rubber containing 5-vinyl-2-norbornene as the non-conjugated diene. The chlorinated rubber has excellent processability in roll milling, extrusion, etc.Type: GrantFiled: December 15, 1987Date of Patent: March 21, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Tojo, Takashi Nakahara, Yasuhiko Otawa, Katsuo Okamoto
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Patent number: 4772421Abstract: An electroconductive resin composite is produced by polymerizing at least one monomer a polymer of which is electroconductive in a matrix of a resin which exhibits the anisotropy in the melt phase to form a composite of the obtained polymer and the resin. The resin composite is obtained in the form of film and a moulded article.Type: GrantFiled: September 16, 1986Date of Patent: September 20, 1988Assignee: Polyplastics Co., Ltd.Inventors: Yukio Ikenaga, Katsuhiko Takahashi, Tsuneyoshi Okada, Kenji Hijikata, Toshio Kanoe
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Patent number: 4703091Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: November 21, 1986Date of Patent: October 27, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4681921Abstract: Improved halogenated butyl rubbers are prepared by isomerizing the polymers so that a significant mole fraction of the halogen is in the primary allylic position. The isomerization is carried out utilizing as a catalyst either a Friedel Crafts catalyst or HBr.Type: GrantFiled: April 5, 1984Date of Patent: July 21, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Francis P. Baldwin
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Patent number: 4632963Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: April 5, 1984Date of Patent: December 30, 1986Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4486574Abstract: Polymers of methyl styrene produced from an isomer mixture having a high content of the para-isomer are halogenated, sulfonated or subjected to other substitution reactions.Type: GrantFiled: August 27, 1982Date of Patent: December 4, 1984Assignee: Mobil Oil CorporationInventor: James G. Murray
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Patent number: 4482678Abstract: A diene rubber composition comprising as a main rubber component an elastomeric polymer having a glass transition temperature of not less than -50.degree. C. selected from the group consisting of a butadiene homopolymer and a copolymer of butadiene and an aromatic vinyl compound, said elastomeric polymer being one prepared by a solution polymerization method and not less than 40% by weight to less than 65% by weight of the polymer chains thereof being branched polymer chains formed by coupling the polymer molecules with each other with a trifunctional or tetrafunctional coupling agent. The composition has excellent rolling resistance characteristic, wet grip characteristic, processability, tear strength and tackiness, and is suitable particularly for use in the tread portion of tires.Type: GrantFiled: August 23, 1983Date of Patent: November 13, 1984Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Chemical Company, LimitedInventors: Hiroshi Furukawa, Yuichi Saito, Akio Imai, Nobuyuki Yoshida, Yasushi Okamoto
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Patent number: 4473451Abstract: An improved vapor phase process for chlorination of polyethylene in a fluidized bed is accomplished by chlorinating a mixture of powdered polyethylene and finely divided inorganic compounds having a dielectric constant of greater than about 40 and specific conductivity of greater than 10.sup.-13 and less than 10.sup.-1 (.OMEGA..sup.-1 cm.sup.-1) such as titanium dioxide, with chlorine, optionally under actinic light, at an initial temperature from about 20.degree.C. to about 70.degree. C. and raising the temperature of the reaction to at least about the crystalline melting point of the polyethylene and continuing the reaction until the polyethylene contains greater than 25 to 45 weight percent bound chlorine.Type: GrantFiled: July 28, 1982Date of Patent: September 25, 1984Assignee: The BF Goodrich CompanyInventors: George M. Benedikt, Donald M. Kurtz
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Patent number: 4420590Abstract: Novel strongly basic anion-exchange resins substantially loaded with controlled relative proportions of iodide-bromide polyhalides whereby, when water is passed therethrough which is contaminated with bacteria, potable drinkable water is obtained for safe and effective usage in public water supply systems for relatively prolonged periods of time.Type: GrantFiled: April 6, 1981Date of Patent: December 13, 1983Assignee: Halex, Inc.Inventor: William J. Gartner
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Patent number: 4381374Abstract: Polybutadiene having high cis-1,4-configuration and dissolved in substantially anhydrous liquid organic solvent is reacted with chlorine, bromine or a mixture thereof. The solvent consists essentially of a mixture of one or more perhalogenated alkanes and one or more partially halogenated alkanes and fine particles of substantially thermoplastic halogenated polybutadiene precipitate from the solvent. The fine particles are separated from the bulk of the solvent.Type: GrantFiled: November 12, 1981Date of Patent: April 26, 1983Assignee: PPG Industries, Inc.Inventor: Patrick E. Hillman
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Patent number: 4360455Abstract: A mixture of brominated oligomeric polystyrenes, having a degree of polymerization of from 3 to 400, and low molecular weight brominated aromatic compounds of the diphenyl ether type is obtained by polymerizing the non-brominated starting materials, in a halohydrocarbon solvent, using a Lewis acid catalyst. The reaction mixture is then brominated and extracted with water to remove hydrogen bromide and catalyst, and the solvent and volatile constituents are separated from the product. The bromination is carried out at from -30.degree. C. to +130.degree. C. The final mixtures have a low melt viscosity and are therefore particularly suitable for incorporation, as a flameproofing agent, into thermoplastics.Type: GrantFiled: January 26, 1981Date of Patent: November 23, 1982Assignee: BASF AktiengesellschaftInventors: Gerhard Lindenschmidt, Wolfgang Schulte, Franz Brandstetter, Herbert Naarmann, Klaus Penzien
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Patent number: 4321331Abstract: High density ion exchange resins are prepared from cross-linked, haloalkylated monovinylidene aromatic polymers which have been halogenated in the presence of a Friedel-Crafts catalyst. For example, a cross-linked chloromethylated polystyrene brominated in the presence of ferric chloride (FeCl.sub.3) may be subsequently aminated to form a high density anion exchange resin useful in thick process slurries such as those employed in uranium recovery.Type: GrantFiled: November 6, 1978Date of Patent: March 23, 1982Assignee: The Dow Chemical CompanyInventors: Alexander H. Widiger, Jr., Osro W. Randall, III, Steven M. Pulver
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Patent number: 4297452Abstract: A novel process is disclosed for increasing the amount of grafted polymer formed during the production of polyamide-modified macroporous polystyrene/divinylbenzene cross-linked beads. Greater selectivity for oxazolination and/or oxazination (grafting) of the chloromethylated polystyrene (CMPS) beads over homopolymer formation is achieved by forming an iodized cross-linked vinyl-addition polymer which is then contacted with an excess of oxazoline or oxazine until up to about 50 percent of said oxazoline or oxazine monomer is reacted. Subsequent hydrolysis of these polyamide-modified resins produces polyamine anion-exchange resins which exhibit greater than 2 times the weak base capacities of conventional anion-exchange resins.Type: GrantFiled: January 4, 1980Date of Patent: October 27, 1981Assignee: The Dow Chemical CompanyInventors: Robert J. De Koch, Gerald C. Kolb, James W. Lalk
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Patent number: 4296151Abstract: Surfaces of articles formed from (1) normally solid polymers of aliphatic mono-1-olefins and (2) elastomeric and resinous polymers of conjugated dienes and vinyl-substituted aromatic compounds are conditioned by contact with a fluorine-containing gas under conditions and for a period of time sufficient to render the surface receptive to adhesives, coatings, paints, inks, decorations, and the like. The fluorine-containing gas can be pure or admixed with up to about 99 volume percent inert gas.Type: GrantFiled: June 12, 1980Date of Patent: October 20, 1981Assignee: Phillips Petroleum CompanyInventor: Harold D. Boultinghouse
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Patent number: 4292415Abstract: Novel polymer-supported metal complexes of the formula:PS --R Me(CO).sub.n H.sub.Type: GrantFiled: April 29, 1980Date of Patent: September 29, 1981Assignee: The United State of America as represented by the United States Department of EnergyInventors: Kurt P. C. Vollhardt, Patrick Perkins
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Patent number: 4276395Abstract: Novel polymer-supported metal complexes of the formulaPS -R Me(CO).sub.n H.sub.Type: GrantFiled: April 29, 1980Date of Patent: June 30, 1981Assignee: The United States of America as represented by the United States Department of EnergyInventors: Kurt P. C. Vollhardt, Patrick Perkins
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Patent number: 4254240Abstract: A solution of butyl rubber in an inert solution such as n-hexane is halogenated in a continuous process using bromine chloride vapor and high intensity mixing means for both the halogenation and subsequent neutralization steps. Adjustment of the mole ratio of bromine chloride to isoprene, where an isobutylene-isoprene butyl copolymer is used, to less than about 1.5 to 1 prevents overhalogenation and significant molecular weight loss, while the use of bromine chloride vapor results in improved process safety.The doubly halogenated product, containing both bromine and chlorine in its structure can be vulcanized in the absence of sulfur, e.g., with zinc oxide. It is particularly useful in rubber compositions where the singly halogenated product is employed, but demonstrates product performance advantages compared to both brominated butyl rubber and chlorinated butyl rubber.Type: GrantFiled: September 10, 1979Date of Patent: March 3, 1981Assignee: Exxon Research & Engineering Co.Inventors: Neil F. Newman, Robert Roper, Roger K. West
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Patent number: 4246354Abstract: This invention relates to a process for the preparation of high density resins by bromination of particles of crosslinked vinylaromatic copolymers of either the gel type or the ionic or non-ionic macroporous type. The invention is characterized in that crosslinked vinylaromatic polymer particles which have been swollen in a solvent are contacted with bromine or a bromine releasing agent in the presence of an oxidizing agent.Type: GrantFiled: May 29, 1979Date of Patent: January 20, 1981Assignee: Diamond Shamrock CorporationInventors: Jean E. E. Herbin, Jean de Koker, Patrick J. B. Prsle, Marc S. A. Giuliani, Teddy E. A. Drode, Jacques L. Boutier, Paul D. A. Grammont
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Patent number: 4239848Abstract: There is disclosed a composition, element, and process of imaging, wherein a polymeric binder is rendered photocrosslinkable by virtue of a photoresponsive source of amines, and by virtue of one or more carbonyl groups on the binder which react with said amines to form a carbinolamine.Type: GrantFiled: February 26, 1979Date of Patent: December 16, 1980Assignee: Eastman Kodak CompanyInventors: Anthony Adin, John C. Wilson
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Patent number: 4226958Abstract: A process is described for the preparation of a polymer having a recurring unit of the formula: ##STR1## where R is hydrogen or methyl, C.sub.n H.sub.2n is lower-alkylene, R.sub.1 and R.sub.2 are aryl or lower-alkyl, and x is 0 or 1. A polymer having a recurring unit of the formula: ##STR2## where X is chloro, bromo, iodo, chloroalkyl, bromoalkyl or iodoalkyl, is reacted with the appropriate aryl or alkyl chloride or bromide and arsenic trichloride, arsenic tribromide or arsenic trioxide in the presence of sodium, magnesium, or lithium metal. The resulting polymer is an intermediate in the preparation, by oxidation, of the corresponding As-oxide which polymer is useful as a catalyst for the conversion of isocyanates to the corresponding carbodiimides.Type: GrantFiled: August 27, 1979Date of Patent: October 7, 1980Assignee: The Upjohn CompanyInventors: Curtis P. Smith, George H. Temme
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Patent number: 4223111Abstract: A process is described for the preparation of a polymer having a recurring unit of the formula: ##STR1## where R is hydrogen or methyl, C.sub.n H.sub.2n is lower-alkylene, R.sub.1 and R.sub.2 are aryl and x is 0 or 1. A polymer having a recurring unit of the formula: ##STR2## where X is chloro, bromo, iodo, chloroalkyl, bromoalkyl or iodoalkyl, is reacted with a triarylarsine in the presence of lithium or sodium-potassium alloy. The resulting polymer is an intermediate in the preparation, by oxidation, of the corresponding As-oxide. The latter is useful as a catalyst for the conversion of isocyanates to the corresponding carbodiimides.Type: GrantFiled: August 27, 1979Date of Patent: September 16, 1980Assignee: The Upjohn CompanyInventors: Curtis P. Smith, George H. Temme
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Patent number: 4200703Abstract: In a process for the manufacture of a heat-stable, nuclear-brominated polystyrene by brominating, at -20.degree. C. to +40.degree. C., a polystyrene dissolved in a chlorinated hydrocarbon in the presence of a Lewis acid catalyst, an improvement is provided wherein the catalyst further comprises 0.02 to 2 moles, per mole of Lewis acid, of a nucleophilic substance which acts as a Lewis base for the Lewis acid.Type: GrantFiled: January 2, 1979Date of Patent: April 29, 1980Assignee: Chemische Werke Huls A.G.Inventors: Klaus Diebel, Horst-Dieter Wulf, Raban Grundmann, Gunther Maahs
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Patent number: 4165431Abstract: A chlorinated colorless polyolefin, preferably a chlorinated colorless isotactic polypropylene, soluble in carbon tetrachloride and having a chlorine content of from 60% to 70% by weight and an average degree of polymerization of from 2000 to 6000, produced by chlorinating polyolefins having a degree of polymerization of from 2000 to 20,000 in suspension or solution or in suspension and solution at 40 to 60.degree. C. in the presence of a halogen transfer agent, a chlorination catalyst and from 0.2 to 0.5% by weight, based on polyolefin, of at least one compound corresponding to the general Formula (I):h.sub.2 n--r--nh>.sub.n H (I)in which R represents the ethylene, propylene or butylene group and n=1-6.Type: GrantFiled: February 27, 1978Date of Patent: August 21, 1979Assignee: Bayer AktiengesellschaftInventors: Franz Alfes, Diez Heine, Reinhard Kaiser, Gunter Kolb, Joachim Probst, Franz Weider