Material Contains Elemental Phosphorus Or Inorganic Phosphorus Compound Patents (Class 526/233)
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Patent number: 4510270Abstract: By adding 0.001 to 0.1% by weight of a polyphosphoric acid to a one-part type anaerobic adhesive obtained by adding an organic peroxide, a hardening accelerator to an ordinary anaerobically polymerizable monomer, the adhesive property such as breakaway-torque on adhering screw portions, impact and shearing strength on adhering flat parts of metals and the preservative stability are greatly improved.Type: GrantFiled: June 29, 1984Date of Patent: April 9, 1985Assignee: Okura Kogyo Kabushiki KaishaInventors: Takanori Okamoto, Hisakazu Mori, Hideaki Matsuda
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Patent number: 4507378Abstract: The invention relates to a method for producing a toner by polymerizing an aqueous suspension of a monomer in the presence of a dispersant selected from orthophosphate, pyrophosphate and polyphosphate, a colorant and an anionic surfactant. The polymerization product is then treated with dilute acid and rinsed with water whereby the dispersant is removed from the polymerization product.Type: GrantFiled: December 6, 1983Date of Patent: March 26, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tsuneo Wada, Kiyoshi Tamaki, Hideki Murata, Sadatugu Terada, Hiroyuki Takagiwa
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Patent number: 4503161Abstract: Microcapsules with liquid fills containing Lewis acid catalysts, catalyst concentrates comprising slurries of the microcapsules in liquid media, and a method for preparing the microcapsules and concentrates. The catalyst concentrates of the present invention are storage stable both alone and when incorporated in a one-part epoxy formulation.Type: GrantFiled: March 23, 1984Date of Patent: March 5, 1985Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gerald E. Korbel, Richard G. Newell
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Patent number: 4481366Abstract: A process for preparing a trifluorovinylsilane represented by the general formula:(CF.sub.2 .dbd.CF).sub.n SiR.sub.4-n (I)where each R independently represents an alkyl group, an aryl group or an aralkyl group, and n is an integer of 1 to 4, which comprises the reaction of chlorotrifluoroethylene with a chlorosilane represented by the general formula:Cl.sub.n SiR.sub.4-n (II)where R and n are as defined above, in the presence of an alkyllithium. Also disclosed is a fluorine-containing polymer represented by the general formula: ##STR1## where each of x and m is an integer other than O, y is an integer including O, and each of R.sup.1, R.sup.2 and R.sup.3 is a lower alkyl group, an aryl group or an aralkyl group, which is prepared by polymerization of a trifluorovinyl silane (I) with active fluoride-ion generating catalyst.Type: GrantFiled: January 20, 1984Date of Patent: November 6, 1984Assignee: Sagami Chemical Research CenterInventors: Tamejiro Hiyama, Kiyoharu Nishide
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Patent number: 4435554Abstract: This invention relates to an improved emulsion polymerization process. Specifically, this invention relates to an improved method for producing acrylonitrile-butadiene polymers. The improvement is characterized in that a reaction mixture contains a mono-basic alkali phosphate buffer which results in polymers that are resistant to subsequent Mooney rise.Type: GrantFiled: August 30, 1982Date of Patent: March 6, 1984Assignee: The Goodyear Tire & Rubber CompanyInventors: Anthony J. Bell, Leland E. Beyersdorff
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Patent number: 4433108Abstract: A process for the preparation of styrene homopolymers or copolymers by suspension polymerization of monomers which contain dissolved styrene polymers from a preceding suspension polymerization, in the presence of sparingly soluble metal phosphates as suspension stabilizers, wherein, before the polymerization is started, the monomer phase is dispersed in an aqueous phase, containing a dissolved mineral acid, preferably phosphoric acid, at from 10.degree. to 80.degree. C. for from 5 to 120 minutes, after which the sparingly soluble metal phosphate is formed in situ in the aqueous phase. The process is particularly suitable for the preparation of expandable styrene polymers, in which case a volatile blowing agent is added to the suspension before, during or after polymerization.Type: GrantFiled: June 4, 1982Date of Patent: February 21, 1984Assignee: BASF AktiengesellschaftInventor: Hans G. Keppler
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Patent number: 4340518Abstract: Process for producing a cationic polychloroprene latex by homo- or copolymerizing chloroprene in an aqueous emulsion in the presence of ammonium salts of inorganic or organic acids as emulsifiers wherein the polymerization is carried out in presence of an alkaline earth and/or alkali salt of an organic carboxylic acid or in presence of a mixture of Na.sub.2 HPO.sub.4 and KH.sub.2 PO.sub.4. The latex thus obtained may be mixed with a bitumen emulsion and can be used for the protection of building or in road construction.Type: GrantFiled: June 18, 1981Date of Patent: July 20, 1982Assignee: Bayer AktiengesellschaftInventors: Wilfried Nolte, Heinz Esser
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Patent number: 4338238Abstract: A process for polymerizing chloroprene which may contain as much as 50% by weight of a copolymerizable monomer, in an alkaline aqueous emulsion, of which the alkali ions at least partially consist of potassium, into a latex rich in solid matter having a solid content of from 50 to 65% by weight in the presence of an alkali salt of disproportionated abietic acid and a formaldehyde condensate with naphthalene sulphonic acid and also an alkali hydroxide, whereby polymerization is carried out until there is a conversion of more than 90% characterized in that(a) the aqueous phase contains from 2.8 to 3.8 parts by weight of an alkali salt of disproportionated abietic acid, from 0.3 to 2.0 parts by weight of a formaldehyde condensate of a naphthalene sulphonic acid and from 0.25 to 0.75 parts by weight of an alkali phosphate and/or polyphosphate, based on 100 parts by weight of monomer, and(b) polymerization is initiated using formamidine sulphinic acid.Type: GrantFiled: October 29, 1980Date of Patent: July 6, 1982Assignee: Bayer AktiengesellschaftInventors: Wilfried Nolte, Wilfried Keller, Heinz Esser
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Patent number: 4335237Abstract: Polymers are prepared from a vinyl monomer or monomers by a homopolymerization or a copolymerization reaction which occurs exothermically, said reaction being carried out by mixing the vinyl monomer or monomers with an additive comprising an endothermic compound which is unreactive with said monomer or monomers and the resultant homopolymers or copolymers and has a phase transition point at the temperature of the polymerization reaction with the absorption of heat, the amount of said endothermic compound being sufficient to counterbalance the major part of the exothermic heat of reaction, the process being especially useful for preparing polymers in solid form or for preparing high solid suspensions of polymers.Type: GrantFiled: July 28, 1980Date of Patent: June 15, 1982Assignee: Nalco Chemical CompanyInventor: Edward G. Ballweber
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Patent number: 4241191Abstract: Styrene polymers are prepared by suspension polymerization using, as suspension stabilizers, mixtures of(A) a sparingly soluble inorganic metal compound and(B) a fine polymer dispersion.The styrene polymers may be used, together with blowing agents, for the manufacture of foams.Type: GrantFiled: November 24, 1978Date of Patent: December 23, 1980Assignee: BASF AktiengesellschaftInventors: Hans G. Keppler, Erhard Stahnecker, Rolf Moeller
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Patent number: 4225460Abstract: Microcapsules with liquid fills containing Lewis acid catalysts, catalyst concentrates comprising slurries of the microcapsules in liquid media and a method for preparing the microcapsules and concentrates.Type: GrantFiled: June 28, 1979Date of Patent: September 30, 1980Assignee: Minnesota Mining and Manufacturing CompanyInventor: Richard G. Newell
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Patent number: 4200720Abstract: Low molecular weight polymers of an unsaturated dicarboxylic anhydride monomer (e.g., maleic anhydride) and a copolymerizable monomer (e.g., styrene) are prepared by an improved process which comprises polymerizing the monomers in the presence of the hydroxide or a nucleophilic salt of a monovalent cation (e.g., a nucleophilic salt or the hydroxide of the ammonium cation, a quaternary ammonium compound, a protonated primary, secondary or tertiary amine, a sulfonium compound, a phosphonium compound or an alkali metal cation). By the practice of this process, low molecular weight polymers are conveniently and economically obtained without the use of high catalyst concentrations, high temperatures, conventional chain transfer agents, high boiling chain transfer solvents or combinations thereof.Type: GrantFiled: August 24, 1978Date of Patent: April 29, 1980Assignee: The Dow Chemical CompanyInventors: Syamalarao Evani, Russell J. Raymond
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Patent number: 4195147Abstract: The preparation of water dispersible amine-functional copolymers is disclosed in which a mixture of ethylenically unsaturated material including amine-functional monomer is slowly added to a heated heel of water miscible organic solvent containing a solubilizing acid in an amount to neutralize from 25% to 90% of the amine functionality in the copolymer, but insufficient to provide a pH below 5 when the copolymer is dispersed in aqueous medium.Type: GrantFiled: February 22, 1979Date of Patent: March 25, 1980Assignee: DeSoto, Inc.Inventors: Kazys Sekmakas, Raj Shah
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Patent number: 4180637Abstract: Low molecular weight polymers of an unsaturated dicarboxylic anhydride monomer (e.g., maleic anhydride) and a copolymerizable monomer (e.g., styrene) are prepared by an improved process which comprises polymerizing the monomers in the presence of the hydroxide or a nucleophilic salt of a monovalent cation (e.g., a nucleophilic salt or the hydroxide of an ammonium compound or of an alkali metal). By the practice of this process, low molecular weight polymers are conveniently and economically obtained without the use of high catalyst concentrations, high temperatures, conventional chain transfer agents, high boiling chain transfer solvents or combinations thereof.Type: GrantFiled: November 7, 1977Date of Patent: December 25, 1979Assignee: The Dow Chemical CompanyInventors: Syamalarao Evani, Russell J. Raymond
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Patent number: 4169828Abstract: The production of polymer beads by a suspension polymerization process in which a vinyl aromatic monomer having a free-radical generating catalyst dissolved therein is suspended in an aqueous medium with the aid of from 0.1 to 2.0 percent by weight, based on monomer, of a finely divided phosphate suspending agent in the presence of a modifier and heated to cause the monomer to polymerize into polymer beads is improved by the addition to the suspension of at least about 0.01 percent by weight based on monomer of an adjunct modifier, such as certain aminoalkanecarboxylic acids and N-substituted derivatives thereof. The process of the invention is especially applicable in the preparation of large polymer beads.Type: GrantFiled: December 27, 1977Date of Patent: October 2, 1979Assignee: Arco Polymers, Inc.Inventor: Harold A. Wright
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Patent number: 4164612Abstract: In a process for producing a water-soluble polymer in an easily grindable glassy state by subjecting to aqueous solution polymerization a mixture comprising a monomer composed mainly of a vinyl monomer represented by the general formula (I): ##STR1## and water in an amount of 7 to 18% by weight based on the total weight of the monomer and water, a water-soluble salt in a powdery form is added to and dispersed in the polymerization system and the polymerization is carried out in the state that the powdery salt is dispersed, whereby a water-soluble polymer excellent in flocculating action and dissolving workability is obtained.Type: GrantFiled: October 31, 1977Date of Patent: August 14, 1979Assignees: Nitto Chemical Industry Co., Ltd., Mitsubishi Rayon Co., Ltd.Inventors: Naoyuki Suzuki, Yoji Wada, Akihisa Furuno
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Patent number: 4161571Abstract: A process for production of the maleic anhydride adduct of a liquid polymer having a maleic anhydride addition amount of 2 to 70% by weight, which comprises reacting a liquid polymer having a molecular weight of 150 to 5,000 and a viscosity of 2 to 50,000 cp at 30.degree. C. in the presence of at least one compound, as a gelation inhibitor, selected from the group consisting of imidazoles, thiazoles, metallic salts of mercaptothiazoles, urea derivatives, naphthylamines, nitrosamines, iron, iron compounds and specific halogen compounds, said liquid polymer being selected from the group consisting of liquid polybutadienes, liquid polyisoprenes and liquid copolymers comprising units of butadiene or isoprene and units of at least one compound selected from the group consisting of other diolefins, olefins and aromatic vinyl compounds.Type: GrantFiled: October 18, 1977Date of Patent: July 17, 1979Assignee: Sumitomo Chemical Company, LimitedInventors: Seimei Yasui, Takao Oshima
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Patent number: 4157339Abstract: A phosphorous halide (for example, PCl.sub.3) is present during the Friedel-Crafts polymerization of an alpha-monoalkene, resulting in the in situ formation of a phosphorylated polymer. Further reaction of the polymer with a polyamine converts phosphoryl groups to phosphonamide groups, yielding a product which is useful as a lube oil detergent.Type: GrantFiled: June 16, 1977Date of Patent: June 5, 1979Assignee: Atlantic Richfield CompanyInventor: Thomas J. Clough
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Patent number: 4146532Abstract: A fluoroelastomer composition comprising (a) a fluoroelastomer having stabilized end group derived from an isoparaffin selected from the group consisting of isobutane, isopentane and isohexane, (b) at least one member selected from the group consisting of bivalent metal oxides, bivalent metal hydroxides and mixtures of bivalent metal oxide or metal hydroxide with metal salt of weak acid, (c) an aromatic polyhydroxy compound and (d) a quaternary ammonium compound of 8-alkyl- (or 8-aralkyl-)1,8-diazabicyclo[5.4.0]-7-undecenium, provides a fluoro-rubber having low compression set and excellent elastic properties and has excellent processing and storage properties. The fluoroelastomer can be cured with appropriate induction time and fast cure rate by the use of a specific curing agent system mentioned above.Type: GrantFiled: April 27, 1977Date of Patent: March 27, 1979Assignee: Daikin Kogyo Co., Ltd.Inventors: Yutaka Kometani, Shinichi Nakagawa, Takeshi Suzuki, Yasuyoshi Furukawa, Tsuneo Nakagawa, Masayasu Tomoda, Masahiko Oka, Tutomu Terada, Yutaka Ueta
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Patent number: 4129706Abstract: Process for the manufacture of styrene polymers optionally containing blowing agent by polymerization in aqueous suspension using as the suspension stabilizer a calcium phosphate which after its manufacture by precipitation has been heated in aqueous dispersion for at least 2 hours at from 70.degree. to 130.degree. C. The styrene polymers may be used for the manufacture of foams.Type: GrantFiled: August 17, 1977Date of Patent: December 12, 1978Assignee: BASF AktiengesellschaftInventors: Hans G. Keppler, Erhard Stahnecker, Rolf Moeller
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Patent number: 4121986Abstract: A process of polymerizing a monomer mixture containing from 3 to 100% of amines containing two or more allyl groups which method comprises reacting a solution of the monomer mixture in a concentrated mineral acid in the presence of a polymerization initiator and isolating the polymer salt so formed.Type: GrantFiled: April 21, 1976Date of Patent: October 24, 1978Assignees: ICI Australia Limited, Commonwealth Scientific and Industrial Research OrganizationInventor: Hendrick Adriaan Jacobus Battaerd
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Patent number: 4098982Abstract: There is provided a process for cationically polymerizing piperylene batchwise or continuously by the addition of piperylene either alone or in admixture with a minor amount of at least another hydrocarbon monomer, incrementally, to a catalyst system consisting essentially of a major amount of an aluminum halide and a minor amount of an inorganic phosphorus acid in an inert solvent while controlling the temperature of reaction in the range of 0.degree. C. to 50.degree. C., drowning the polymerization mixture in water, separating the organic phase therefrom, then removing the solvent and recovering a solid polymer in good color and yield, free from an intractable gel, rendering the same useful as a tackifying resin.Type: GrantFiled: March 8, 1977Date of Patent: July 4, 1978Assignee: Arizona Chemical CompanyInventor: Ronald Thomas Wojcik
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Patent number: 4093787Abstract: Vinyl chloride is polymerized in aqueous dispersion, preferably in aqueous dispersion, preferably in aqueous suspension, in a reactor with walls coated with a layer of a cross-linked polymeric material containing polar groups formed from a reaction mixture having an aldehyde, preferably formaldehyde, as one component thereof.Type: GrantFiled: August 14, 1975Date of Patent: June 6, 1978Assignee: Imperial Chemical Industries LimitedInventors: Robin Henry Burgess, Jeffrey Chester Greaves
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Patent number: 4085169Abstract: Styrenic polymer particles having a substantially uniform particle size are prepared by suspending styrenic polymer particles having particle sizes in a certain range in water to provide an aqueous suspension and after adding to the suspension a styrenic monomer, a suspension polymerization catalyst and a polymerization retarder in an amount of 1/200 to 1/15 mole per 1 mole of the catalyst, conducting the suspension polymerization. By conducting the polymerization in the presence of a foaming agent, one can produce foamable styrenic polymer particles having a substantially uniform particle size.Type: GrantFiled: September 29, 1975Date of Patent: April 18, 1978Assignees: Sekisui Kagaku Kogyo Kabushiki Kaisha, Sekisui Kaseihin Kogyo Kabushiki KaishaInventors: Fumio Saito, Fumito Yamai, Yositugu Beppu, Shinpei Nakayama
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Patent number: 4063011Abstract: The specification discloses resinous compositions comprising copolymers of alpha methyl styrene and vinyl toluene, 95 percent by weight of said copolymers having molecular chain lengths less than 100 Angstroms. The compositions are characterized by softening points in the range of about 10 to 98.degree. C. and good solubility in paraffin wax. Processes are disclosed for preparing said compositions by copolymerizing mixtures of monomers of vinyl toluene and alpha methyl styrene in a weight ratio in the range of 2.5:1 to 4.5:1 in the presence of an acid clay catalyst.Type: GrantFiled: February 6, 1976Date of Patent: December 13, 1977Assignee: Hercules IncorporatedInventors: Clarence Clayton Campbell, Dean Almon Finfinger
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Patent number: 4060680Abstract: A process which comprises producing a uniform copolymer of acrylonitrile and at least one faster-reacting aromatic olefine containing 50-95% molar of acrylonitrile units wherein the polymerization is conducted in the presence of at least one thiol as chain-transfer agent and the reaction medium is maintained at pH .ltoreq. 4.5, e.g. by using dilute sulphuric acid.Type: GrantFiled: March 22, 1976Date of Patent: November 29, 1977Assignee: Imperial Chemical Industries LimitedInventor: Brian Norman Hendy
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Patent number: 4035563Abstract: A method of suspension polymerizing in an aqueous medium vinyl chloride or a mixture of 50% or more vinyl chloride and remainder other monomers copolymerizable therewith in the presence of an oil soluble initiator, a suspension stabilizer and 0.005 to 50 ppm of nitrite, and 10 to 1000 ppm of water soluble metallic salt, the parts being based on the amount of aqueous medium.Type: GrantFiled: March 12, 1975Date of Patent: July 12, 1977Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hiromitsu Tachibana, Toshiaki Sasaki, Toshiaki Sugita, Kazuo Saito
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Patent number: 4029869Abstract: Attempts to prepare polystyrene by peroxide-initiated suspension polymerization at 125.degree. C resulted in polymer having narrower molecular weight distribution than desired. The problem has been solved by copolymerizing the styrene with from 0.05 to 0.35 weight per cent, based on styrene, of a modifying comonomer consisting of a non-conjugated diolefinic compound having one very reactive olefinic group and one less reactive olefinic group such as, for example, allyl methacrylate.Type: GrantFiled: December 30, 1975Date of Patent: June 14, 1977Assignee: ARCO Polymers, Inc.Inventors: Alvin R. Ingram, Harold A. Wright
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Patent number: 4025481Abstract: This invention relates to a method for the preparation of aqueous dispersions of polytetrafluoroethylene comprising polymerizing tetrafluoroethylene in an aqueous medium containing a polymerization initiator and an appropriate emulsifying agent as well as other necessary additives in the presence of a stabilizing amount of a stabilizing agent selected to be a saturated halogenated acyclic or cyclic hydrocarbon containing less than about 20 carbon atoms or an unsaturated halogenated acyclic or cyclic hydrocarbon containing less than about 20 carbon atoms which is not copolymerizable with the tetrafluoroethylene under the reaction conditions, or a mixture of said halogenated hydrocarbons.Type: GrantFiled: May 22, 1975Date of Patent: May 24, 1977Assignee: Produits Chimiques Ugine KuhlmannInventors: Claude Tournut, Edouard Grimaud
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Patent number: 4024040Abstract: Improved process for the preparation of water-soluble, substantially linear, high molecular weight polymers, comprising irradiating an aqueous solution of an ethylenically unsaturated monomer and a water-soluble salt under controlled conditions of concentration, radiation intensity, conversion, and total radiation dose. The polymers may be obtained in aqueous gel form or recovered in the form of powder. The polymers are useful as flocculating, thickening, and mobility control agents.Type: GrantFiled: February 26, 1974Date of Patent: May 17, 1977Assignee: Hercules IncorporatedInventors: Charalambos J. Phalangas, Alfred J. Restaino, Han Bo Yun
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Patent number: 4017670Abstract: The production of polymer beads by a suspension polymerization in which a vinyl aromatic monomer having a free-radical generating catalyst dissolved therein is suspended in an aqueous medium with the aid of from 0.2 to 1.0 per cent by weight, based on monomer, of a finely divided phosphate suspending agent and heated to cause the monomer to polymerize into polymer beads is improved by treated the aqueous medium containing the phosphate and any extender with ultrasound prior to adding the monomer and polymerizing. The resulting polymer bead size is thereby found to be smaller than would have been obtained without the use of ultrasound.Type: GrantFiled: May 24, 1976Date of Patent: April 12, 1977Assignee: ARCO Polymers, Inc.Inventors: John P. Spicuzza, Jr., Frank J. E. Mills
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Patent number: 3979371Abstract: There is provided limonene epoxide polymer prepared by polymerizing monomeric limonene epoxide dissolved in an inert polar solvent at a temperature ranging from between about -20.degree.C. and about -150.degree.C. in the presence of an inorganic, non-metallic, fluoride catalyst, such as boron trifluoride and phosphorous pentafluoride, to obtain an optically active polymer, useful as a tackifier in an adhesive composition for rubbers or elastomers.Type: GrantFiled: January 24, 1975Date of Patent: September 7, 1976Assignee: Arizona Chemical CompanyInventor: Erwin Richard Ruckel
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Patent number: 3953402Abstract: Antioxidants such as 3,5-di tert.butyl-4-hydroxyphenyl acrylate and 3,5-di tert.butyl-4-hydroxyphenyl methacrylate, age resistant polymers having age resistors physically combined therewith and age resistant polymeric compositions prepared by emulsion free radical polymerization techniques involving the use of said age resistors as monomers.Type: GrantFiled: July 20, 1970Date of Patent: April 27, 1976Assignee: The Goodyear Tire & Rubber CompanyInventor: Richard H. Kline