With Oxygen Or Nitrogen Containing Reactant Patents (Class 521/147)
  • Patent number: 4692269
    Abstract: A gas-releasing composition of a t-alkylhydrazinium salt and/or a carbonylhydrazine and at least one compound selected from free radical forming sources, metal oxides, and sulfur and/or sulfur donor compounds wherein when sulfur and/or a sulfur donor compound is used, the composition will also contain one or more members selected from sulfur accelerators, metal oxides, and amino-alcohols. This novel gas-releasing composition permits the selectively tailoring of the gas evolution of a system in order to meet a wide range of specific application areas polymer characteristics and conditions over a wide temperature range.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: September 8, 1987
    Assignee: Pennwalt Corporation
    Inventors: Chester J. Kmiec, Michael F. Novits
  • Patent number: 4668709
    Abstract: This invention provides a highly porous crosslinked functionalised polymer having interconnected cavities of micron dimensions and having a pore volume greater than about 5.6 cc/g and having a capacity to absorb water and also to absorb saline solutions. The polymers are generally based on styrene or various acrylates or mixtures and have a functional group selected from a large range of ionic and polar compositions.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: May 26, 1987
    Assignee: Lever Brothers Company
    Inventors: Keith Jones, Barry R. Lothian, Alexander Martin, Graham Taylor, Ziq Hao
  • Patent number: 4665103
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 12, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Patent number: 4663360
    Abstract: A steam expandable alkenyl aromatic polymer composition and methods of preparation are provided. The composition is mixed with a volatile blowing agent containing, as a primary blowing agent, dichlorodifluoromethane and as a secondary blowing agent, a halogenated hydrocarbon, a hydrocarbon, or an aliphatic alcohol containing from 1 to 4 carbon atoms, the secondary blowing agent having a normal atmospherpic boiling point of from about 0.degree. to about 100.degree. C. The composition may be expanded by steam immediately after extrusion foaming or may be expanded after aging of the composition which has been impregnated with volatile blowing agent.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: May 5, 1987
    Assignee: The Dow Chemical Company
    Inventors: Chung P. Park, Gerald A. Garcia
  • Patent number: 4661574
    Abstract: A moldable composition which comprises a novel random N-(halogenated phenyl)maleimide-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriters' Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: April 28, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Patent number: 4659745
    Abstract: Styrenic polymer beads that are useful in forming foamed cups with improved strength and thermal properties are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto an emulsion of a comonomer solution of styrenic monomer and divinylbenzene, which emulsion also contains free-radical-producing catalysts, and the suspension with added monomers is heated to copolymerize the styrenic monomer and divinylbenzene within and on the initial beads and form modified beads.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: April 21, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Adolph V. DiGiulio
  • Patent number: 4626573
    Abstract: A moldable composition which comprises a novel random N-(brominated or chlorinated phenyl) maleimide-containing copolymer, a thermoplastic resin, preferably, polycarbonate and a flame retardant synergist is disclosed. The molded composition exhibits at least a 94 V-1 classification when tested in accordance with Underwriters Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: December 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Patent number: 4612334
    Abstract: This invention provides a highly porous crosslinked functionalized polymer having interconnected cavities of micron dimensions and having a pore volume greater than about 5.6 cc/g and having a capacity to absorb water and also to absorb saline solutions. The polymers are generally based on styrene or various acrylates or mixtures and have a functional group selected from a large range of ionic and polar compositions.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: September 16, 1986
    Assignee: Lever Brothers Company
    Inventors: Keith Jones, Barry R. Lothian, Alexander Martin, Graham Taylor, Zia Haq
  • Patent number: 4611014
    Abstract: This invention discloses highly porous crosslinked functionalized polymers having interconnected cavities and a pore volume greater than 5.6 cc/g in the swollen state and having a capacity to absorb aqueous or organic acidic liquids from its dried state of at least 3 g liquid per gram of polymer. The polymers are generally based on styrene and/or methacrylate compositions and contain various ionic or polar functional groups.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: September 9, 1986
    Assignee: Lever Brothers Company
    Inventors: Keith Jomes, Barry R. Lothian, Alexander Martin, Graham Taylor, Zia Haq
  • Patent number: 4607059
    Abstract: A gas-releasing composition of a t-alkylhydrazinium salt and/or a carbonylhydrazine and at least one compound selected from free radical forming sources, metal oxides, and sulfur and/or sulfur donor compounds wherein when sulfur and/or a sulfur donor compound is used, the composition will also contain one or more members selected from sulfur accelerators, metal oxides, and amino-alcohols. This novel gas-releasing composition permits the selectively tailoring of the gas evolution of a system in order to meet a wide range of specific application areas polymer characteristics and conditions over a wide temperature range.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: August 19, 1986
    Assignee: Pennwalt Corporation
    Inventors: Chester J. Kmiec, Michael F. Novits
  • Patent number: 4596832
    Abstract: In producing a foam by foaming a melt-plasticized styrene/maleic anhydride copolymer resin, a process for producing a highly foamed styrene/maleic anhydride copolymer resin foam characterized by using as the blowing agent at least one compound selected from the group consisting of a carboxylate of a metal of group Ia of the periodic table of elements, a carbonate of a metal of group Ia, a carboxylate of a metal of group IIa and a carbonate of a metal of group IIa; or by first blending with said copolymer resin at least one compound selected from the group consisting of a carboxylate of a metal of group Ia of the periodic table of elements, a carbonate of a metal of group Ia, a carboxylate of a metal of group IIa and a carbonate of a metal of group IIa, then melt-blending the mixture, followed by extruding and granulating the blend to form a pre-expanded granular product, and thereafter foaming the granular product thus obtained.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: June 24, 1986
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Nagao Ariga, Kyotaro Shimazu, Hiroyuki Sato
  • Patent number: 4585605
    Abstract: The foam of the present invention, which has a multi-cellular structure including many wrinkles having one end in the boundary portion where at least three cells are adjacent to one another and extending toward the central portion of the cell wall, is a rigid thermoplastic resin foam having an ultra-low density, a high sound-insulating property, a high heat-insulating property and a high flexibility, and it is suitable for adaption for building construction. The process of the present invention is to provide the aforesaid foam of the present invention by subjecting the foam of a rigid thermoplastic resin to expansion, contraction and aging.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: April 29, 1986
    Assignee: Dow Chemical Company
    Inventors: Takao Kadota, Masayuki Hashimoto, Itsuo Hamada
  • Patent number: 4572740
    Abstract: The invention relates to new blowing and nucleating agents for the processing of plastics, which are based on mono- and diesters of citric acid.
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: February 25, 1986
    Assignee: Boehringer Ingelheim KG
    Inventors: Gunther Kretzschmann, Dieter Scholz, Karl-Heinz Hilgert
  • Patent number: 4569949
    Abstract: Expandable styrene acrylonitrile polymer particles are provided which give good resiliency over an extended period of time.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: February 11, 1986
    Assignee: The Dow Chemical Company
    Inventor: John W. Brenner
  • Patent number: 4563481
    Abstract: Expandable styrene acrylonitrile polymer particles are provided which give good resiliency over an extended period of time.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: January 7, 1986
    Assignee: The Dow Chemical Company
    Inventor: John W. Brenner
  • Patent number: 4552904
    Abstract: The foam of the present invention, which has a multi-cellular structure including many wrinkles having one end in the boundary portion where at least three cells are adjacent to one another and extending toward the central portion of the cell wall, is a rigid thermoplastic resin foam having an ultra-low density, a high sound-insulating property, a high heat-insulating property and a high flexibility, and it is suitable for adaption for building construction. The process of the present invention is to provide the aforesaid foam of the present invention by subjecting the foam of a rigid thermoplastic resin to expansion, contraction and aging.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: November 12, 1985
    Assignee: The Dow Chemical Company
    Inventors: Takao Kadota, Masayuki Hashimoto, Itsuo Hamada
  • Patent number: 4539335
    Abstract: Expandable thermoplastic resin particles having excellent heat resistance, solvent resistance, foamability and moldability comprising a copolymer of 10 to 80% by weight of .alpha.-methylstyrene, 5 to 50% by weight of acrylonitrile and 0 to 70% by weight of at least one member selected from the group consisting of styrene, methyl methacrylate, vinyl toluene and t-butylstyrene, and an expanding agent impregnated in the copolymer, prepared easily in high conversions by an aqueous suspension polymerization using particular difunctional organic peroxides, preferably those capable of producing t-butoxy radicals, followed by impregnation of the produced polymer particles with the expanding agent.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: September 3, 1985
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kiyoshi Mori, Masao Nakagawa
  • Patent number: 4536521
    Abstract: Porous, cross-linked polymeric materials comprising hydrocarbon residues can be sulphonated to produce sulphonated polymers which are able to absorb large volumes of ionic solutions and also act as ion-exchange resins.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: August 20, 1985
    Assignee: Lever Brothers Company
    Inventor: Zia Haq
  • Patent number: 4535094
    Abstract: Highly desirable alkenylaromatic monomer olefinically unsaturated acid foams are prepared by extrusion using as a blowing agent inorganic compounds such as sodium bicarbonate, either alone or in combination with volatile fluid foaming agents.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: August 13, 1985
    Assignee: The Dow Chemical Company
    Inventors: Chung P. Park, Kyung W. Suh
  • Patent number: 4532264
    Abstract: Excellently properties, thermoplastic compositions well adapted for conversion by conventional melt-processing extrusion and other ordinary fabrication techniques into very good quality, lightly cross-linked, thermocollapse-resistant, closed-cell plastic foam(s) and the like expanded cellular product(s) are comprised of an intimate mixture of:(A) a sparsely hydroxylated, normally-solid olefin polymer, particularly a linear alkenyl aromatic or polyolefin polymer which is frequently at least substantially a styrene polymer which is generally in copolymeric form with appropriate moieties of comonomers adapted to provide the requisite attached hydroxyl units therein and thereon; and(B) a minor proportion of an inter-reactive, cross-linking polyisocyanate constituent.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: July 30, 1985
    Assignee: The Dow Chemical Company
    Inventor: Louis C. Rubens
  • Patent number: 4532265
    Abstract: Highly desirable alkenylaromatic monomer olefinically unsaturated acid foams are prepared by extrusion using as a blowing agent inorganic compounds such as sodium bicarbonate, either alone or in combination with volatile fluid foaming agents.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: July 30, 1985
    Assignee: The Dow Chemical Company
    Inventors: Chung P. Park, Kyung W. Suh
  • Patent number: 4485193
    Abstract: Resilient foam particles and moldings are obtained employing a lightly crosslinked polymer such as a styrene polymer with volatile fluid foaming agent that has low permeability through the polymer. Multiple expansion will permit low density particles for molding.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: November 27, 1984
    Assignee: The Dow Chemical Company
    Inventors: Louis C. Rubens, Willard E. Alexander
  • Patent number: 4454086
    Abstract: High quality plastic foam and the like expanded products and articles are made by incorporating a blowing agent in an acid-containing alkenyl aromatic polymer, such as a copolymer of styrene and acrylic acid; extruding while cross-linking the polymer with a polyfunctional cross-linking agent.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: June 12, 1984
    Assignee: The Dow Chemical Company
    Inventors: John M. Corbett, Charles R. Bearden
  • Patent number: 4442232
    Abstract: Expandable styrene-maleic anhydride copolymer particles which comprises a copolymer resin obtained by reaction of a styrene-maleic anhydride copolymer with a hydroxy compound and further impregnated with a volatile blowing agent.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: April 10, 1984
    Assignee: Sekisui Plastic Co., Ltd.
    Inventors: Mutsuhiko Kajimura, Tetsuji Maeda
  • Patent number: 4438224
    Abstract: Mechanically stable styrene polymer foams having highly desirable physical properties are prepared employing as a blowing agent a mixture of lower alcohols with chlorofluoromethanes.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: March 20, 1984
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, David C. Krueger, Burch E. Zehner
  • Patent number: 4427796
    Abstract: There is provided a water insoluble disinfectant composition comprising a tertiary amine quaternized with a water insoluble carrier to provide a quaternary ammonium salt.In the preferred modification of the invention, the carrier is a resin, most suitably a crosslinked polystyrene or crosslinked methacrylate resin. The compositions of the present invention are formed by creating an amine reactive labile active center on the carrier and reacting said activated carrier with the amine of choice to form a quaternary ammonium salt. Ammonium salts having at least one alkyl moiety of C10 to C16 carbon atoms and at least one aryl moiety have been found particularly effective.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: January 24, 1984
    Assignee: Research Foundation of the State University of New York
    Inventors: Ron Nudel, Gilbert E. Janauer, Eugene E. Schrier, Ilona W. Figura
  • Patent number: 4367290
    Abstract: A foamed article of poly-n-butyl methacrylate or a copolymer of n-butyl methacrylate and other vinyl monomer is obtained by allowing n-butyl methacrylate alone or n-butyl methacrylate in conjunction with the other vinyl monomer to stand at room temperature under a vacuum.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: January 4, 1983
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Katsukiyo Ito, Kazuo Kodaira
  • Patent number: 4351910
    Abstract: An expandable styrene series resin composition comprising a styrene series resin containing in its molecular structure a group of the formula:--SiY.sub.n R.sub.3-n (I)wherein R is an inert monovalent organic group; Y is a hydrolyzable group; and n is an integer of 1 to 3, and a blowing agent, and if necessary, one or more organosilane compounds having at least two hydrolyzable groups in its molecule, can give foamed articles having excellent heat resistance as well as high degree of expansion and good physical and chemical properties.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: September 28, 1982
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Hatuo Sugitani, Takeo Kudo, Yoshiyuki Mukoyama, Hiromasa Kawai
  • Patent number: 4330635
    Abstract: The invention relates to a foamable polymeric composition comprising a copolymer of alkenyl aromatic and alkenyl nitrile monomers, optionally a diene rubber grafted with said monomers and a foaming agent selected from a polybasic acid group. A method for foaming said polyblend is also disclosed.
    Type: Grant
    Filed: December 15, 1980
    Date of Patent: May 18, 1982
    Assignee: Monsanto Company
    Inventor: Edward F. Tokas
  • Patent number: 4327197
    Abstract: Copolymers of monovinyl aromatic monomers and the anhydrides of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said composition having fire retardant properties.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: April 27, 1982
    Assignee: Atlantic Richfield Company
    Inventors: Adolph V. Di Giulio, Jack N. Bauer
  • Patent number: 4326044
    Abstract: Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: April 20, 1982
    Assignee: Atlantic Richfield Company
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4323655
    Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and the anhydride of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: April 6, 1982
    Assignee: Atlantic Richfield Company
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4312910
    Abstract: Machinable foams having improved solvent resistance are prepared from a styrene-acrylic acid copolymer.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: January 26, 1982
    Assignee: The Dow Chemical Company
    Inventors: Kyung W. Suh, Jonathan R. Jones
  • Patent number: 4312958
    Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: April 17, 1981
    Date of Patent: January 26, 1982
    Assignee: Atlantic Richfield Company
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4307202
    Abstract: Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and undesirable organic blowing agents are avoided.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: December 22, 1981
    Assignee: The Dow Chemical Company
    Inventor: John M. Corbett
  • Patent number: 4306036
    Abstract: Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and undesirable organic blowing agents are avoided.
    Type: Grant
    Filed: August 21, 1980
    Date of Patent: December 15, 1981
    Assignee: The Dow Chemical Company
    Inventor: John M. Corbett
  • Patent number: 4304874
    Abstract: Copolymers of monovinyl aromatic monomers and the anhydrides of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said composition having fire retardant properties.
    Type: Grant
    Filed: May 6, 1980
    Date of Patent: December 8, 1981
    Assignee: ARCO Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4298705
    Abstract: Rubber-modified copolymers of monovinyl aromatic, monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: November 3, 1981
    Assignee: Arco Polymers, Inc.
    Inventor: Adolph V. DiGiulio
  • Patent number: 4298703
    Abstract: Copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said composition having fire retardant properties.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: November 3, 1981
    Assignee: ARCO Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4298704
    Abstract: Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid amide monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: November 3, 1981
    Assignee: ARCO Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4289857
    Abstract: The dimensional stability of closed-cell synthetic polymer foams can be notably improved by the incorporation therein, during their preparation, of from about 0.1 to about 10 percent by weight (based upon the weight of the synthetic resin) of certain borate or phosphinate glycol ester compounds such as, for example, tri(1-stearyl-glycero)borate, tri(monostearylpolyoxyethyleneglycol)borate, di(1-stearylglycero)phosphinate, and the like.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: September 15, 1981
    Assignee: Asahi-Dow Limited
    Inventors: Tsuneo Hoki, Nobuo Miura, Hiroshi Watanabe
  • Patent number: 4286070
    Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: August 25, 1981
    Assignee: Arco Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4286068
    Abstract: A process for oxidizing organic substrates such as ketones and ethylenically unsaturated compounds. The substrate is contacted with aqueous hydrogen peroxide in a solution or in a two-phase liquid system, in the presence of a polymeric catalyst containing chemically bonded arsenic. This process can lead to lactones or hydroxy acids from cyclic ketones or to esters or mixtures of alcohol and carboxylic acid from open chain ketones. Unsaturated compounds afford epoxides and/or diols. Preparations of certain polymers substituted by arsenic groups, particularly from polystyrene, poly(vinylpyridine) and copolymers thereof, useful as catalysts in such oxidation process, are described. For example, polystyrene is brominated, bromine therein is replaced by lithium and the resulting lithiated polymer is converted into a polymer containing an arsenic group, such as arsono, --As(O)(OH).sub.2, as substituent group, by reaction with arsine triethoxide followed by oxidation and hydrolysis by aqueous hydrogen peroxide.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: August 25, 1981
    Assignee: Allied Chemical Corporation
    Inventors: Frank Mares, Stephen E. Jacobson
  • Patent number: 4278627
    Abstract: Expandable styrene-maleic anhydride copolymer particles in which the base copolymer is chemically modified with a hydroxy compound such as 1,4-butanediol, diethylene glycol, glycerine or bisphenol which are useful in the production of various foamed articles having low density without overcharging thereof and good thermal stability.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: July 14, 1981
    Assignee: Sekisui Kaseihin Kogyo Kabushiki Kaisha
    Inventors: Mutsuhiko Kajimura, Tetsuji Maeda
  • Patent number: 4278767
    Abstract: Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: July 14, 1981
    Assignee: Arco Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4278768
    Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and the anhydride of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: July 14, 1981
    Assignee: Arco Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4273880
    Abstract: A process for the production of foamed films of polyethylene or ethylene vinyl acetate copolymers using metal salts of aliphatic fatty acids as additives.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: June 16, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wichard Pump, Wolfgang Becker, Edwin Woldenberg
  • Patent number: 4271271
    Abstract: Copolymers of monovinyl aromatic monomers and ethylenically unsaturated monocarboxylic acid amide monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: June 2, 1981
    Assignee: Arco Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4266037
    Abstract: Copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said composition having fire retardant properties.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: May 5, 1981
    Assignee: Arco Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer
  • Patent number: 4266038
    Abstract: Rubber-modified copolymers of monovinyl aromatic monomers and imide derivatives of ethylenically unsaturated dicarboxylic acid monomers are blended with water as a blowing agent, bromodiphenylethers as fire retardants, and metal oxides as synergist for the ethers to form a composition which can be foamed to densities of between 1 and 10 pounds per cubic foot, said foam composition having fire-retardant properties.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: May 5, 1981
    Assignee: Arco Polymers, Inc.
    Inventors: Adolph V. DiGiulio, Jack N. Bauer