Patents Examined by William F. Hamrock
  • Patent number: 4361688
    Abstract: Novel peroxydicarbonates are provided in which the alkyl carbonate moiety is 2-alkyl-2-phenyl substituted. The compounds are useful as polymerization initiators of ethylenically unsaturated monomers, such as vinyl chloride, and as catalysts of unsaturated polyester resins. The subject peroxydicarbonates are characterized in that they are solid at room temperature, have ambient temperature stability in spite of a low 10 hour half-life temperature, and can normally be transported and stored without refrigeration.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: November 30, 1982
    Assignee: Argus Chemical Corporation
    Inventors: Reidar Halle, David Peterson
  • Patent number: 4360456
    Abstract: A two component epoxy resin and curing means therefor in mastic compositions, shelf stable, in close side by side relationship, sharing the same environment, capable of ambient temperature curing, to a solid state when mixed in the correct proportions, such stability provided by low vapor pressure active ingredients, and the absence of reactive vapors in the curing means.
    Type: Grant
    Filed: November 13, 1980
    Date of Patent: November 23, 1982
    Assignee: Applied Plastics Co., Inc.
    Inventor: Francis G. Firth
  • Patent number: 4360601
    Abstract: A process for extracting a fluorinated polymer which contains carboxylic ester functional groups with a liquid compound which is preferably a perchlorofluorocarbon having a boiling point in the range of to C. is described. Polymer so extracted can be fabricated into a membrane and hydrolyzed to ion exchange form to provide a membrane for electrolytic cells. When used as the membrane for a chloralkali cell, such membrane provides improved performance, e.g., a high level of current efficiency and low power consumption are maintained for an extended period of time when compared against a membrane of like construction fabricated from polymer which has not been so extracted.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: November 23, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Terry M. Copeland, Paul R. Resnick
  • Patent number: 4359537
    Abstract: Emulsion copolymer particles with diameters less than 1.5 micrometers are functionalized with anion exchange functional groups by a method involving coagulation of the emulsion. Both weakly basic and strongly basic anion exchange resins are prepared from aromatic or acrylic copolymers, and the emulsion coagula may be resuspended to form anion exchange emulsions.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: November 16, 1982
    Assignee: Rohm and Haas Company
    Inventor: Berni P. Chong
  • Patent number: 4358567
    Abstract: A resin for hairdressing is obtained by: copolymerizing in a hydrophilic solvent a monomer (1), which is specific derivative of acrylic or methacrylic acid, and a monomer (3), which is a specific (meth)acrylic acid ester, and, optionally in addition, any of a monomer (2), which is another specific (meth)acrylic acid ester, and monomer (4), which is a hydrophilic ethylenically unsaturated monomer, and a monomer (5), which is an ethylenically unsaturated monomer other than the monomers (1) through (4); causing the copolymer thus formed to react in the state of a solution in a hydrophilic solvent with sodium or potassium haloacetate; removing any precipitate formed as by-product; and, if necessary, subjecting the copolymer solution thus obtained to an ion-exchange resin treatment thereby to remove ionic impurities.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: November 9, 1982
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Kazuhide Hayama, Kanji Narazaki
  • Patent number: 4358545
    Abstract: An improved polymer for use as an ion exchange membrane in an electrolytic cell wherein the polymer has pendant chains containing sulfonic acid ion exchange groups and has an equivalent weight of between about 800 and about 1500. The polymers have a hydration product of less than about 22,000.The electrolytic cell and its method of operation are described when these polymers are used as ion exchange membranes.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: November 9, 1982
    Assignee: The Dow Chemical Company
    Inventors: Bobby R. Ezzell, William P. Carl, William A. Mod
  • Patent number: 4358565
    Abstract: A modified hydrogenated star-shaped polymer comprising a nucleus, e.g., divinylbenzene, with polymeric arms linked to it is prepared by grafting a hydrogenated star-shaped polymer with a nitrogen-containing polymerizable polar organic compound, e.g., 2-vinylpyridine or 4-vinylpyridine. Such polymers are useful as viscosity index improvers for lube oil compositions, and also possess dispersancy.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: November 9, 1982
    Assignee: Shell Oil Company
    Inventor: Rudolf J. A. Eckert
  • Patent number: 4358546
    Abstract: A porous cross-linked copolymer of chloromethylstyrene and divinylbenzene having a divinylbenzene unit represented by Xm of from about 9.0 percent by mole to about 17.0 percent by mole based on the total moles of monomer units; a content of active chlorine atom of from about 5.25-0.08 Xm mmole/g-dry resin to about 6.43-0.10 Xm mmole/g-dry resin; a water regain of from about 0.10 ml/g-dry resin to about 1.20 ml/g-dry resin; and a total volume of micro pores having a diameter of from about 500 angstroms to about 3000 angstroms of from 0.10 ml/g-dry resin to about 1.20 ml/g-dry resin; and a porous iminodiacetic acid type chelating resin having a Xm of from about 9.0 percent by mole to about 17.0 percent by mole based on the total moles of all monomer units; an ion exchange capacity of from about 5.35-12.0 Xm/(205.6-1.30 Xm) meq/g-dry resin to about 7.93-18.1 Xm/(247.1-2.0 Xm) meq/g-dry resin; a water regain of from about 0.60 ml/g-dry resin to about 2.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: November 9, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yamaguchi Naomi, Noguchi Kohji, Tsuzura Kazuo
  • Patent number: 4358566
    Abstract: Macromolecules with a distribution of molecular weights and functionality which can be rendered useful by heterogeneous catalytic modification are selectively modified on the basis of molecular dimensions and diffusion rates, using catalysts with specific pore size and particle size distribution. For example, liquid polymers are produced having both hydroxyl and carbonyl functionality with the carbonyl/hydroxyl ratio increasing with molecular weight. More specifically, a high molecular weight polymer is cleaved by ozonation with subsequent reduction with a heterogeneous catalyst having some pores smaller than the radii of gyration of the largest fractions but larger than the radii of gyration of other fractions of the molecular weight distribution of the polymer. The reduction may be performed in an intraparticle mass transfer controlling regime which further influences reduction efficiency as a function of molecular weight.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: November 9, 1982
    Assignee: Exxon Research & Engineering Co.
    Inventor: Gary Ver Strate
  • Patent number: 4357447
    Abstract: Polyfunctional N-chloramide derivatives of homo-or copolymers of acrylamide or methacrylamide. These may be copolymers of methacrylamide and acrylamide; or of either of these with any of styrene, methylstyrene, dimethylstyrene, chlorostyrene and alkylacrylate. Preferred alkylacrylate include methyl-, methylmeth-, ethyl-, ethylmethyl-, butylmeth-, hexyl-, hexylmeth-, decyl-, decylmeth-, dodecyl- and dodecylmeth- species. The derivatives may be cross-linked by divinylbenzene or divinylether.
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: November 2, 1982
    Assignee: Akzo NV
    Inventors: Hans-Georg Zengel, Manfred Bergfeld, Rainer Zielke
  • Patent number: 4357271
    Abstract: A thermoplastic polycarbonate molding composition containing a particulate filler coated with a silane.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: November 2, 1982
    Assignee: General Electric Company
    Inventor: Niles R. Rosenquist
  • Patent number: 4357437
    Abstract: A process for the production of water-soluble hydrolyzed polyacrylonitrile polymers, wherein the acrylonitrile is polymerized in the presence of 1-8% by weight of hydrolyzed polyacrylonitrile and hydrolyzed without intermediate isolation from the reaction mixture.
    Type: Grant
    Filed: July 23, 1981
    Date of Patent: November 2, 1982
    Assignee: Wolff Walsrode AG
    Inventors: Helmut Huhn, Werner Karstens, Lutz Hoppe
  • Patent number: 4356288
    Abstract: Polymers of esters of acrylic acid having an average chain length of about 6 to about 30 mers are prepared by an anionic polymerization reaction, carried out in the presence of a catalytic amount of an alkoxide anion. These polymers, their hydrolysis products, and their derivatives have a wide variety of applications, including among others use as components in films, coatings, fibers, impregnants, adhesives, and binders, and use as modifiers, plasticizers, melt flow improvers, and leveling agents.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: October 26, 1982
    Assignee: Rohm and Haas Company
    Inventors: Sheldon N. Lewis, Richard A. Haggard
  • Patent number: 4356289
    Abstract: A process is disclosed for making polyfunctional N-chloramide derivatives of homo--or copolymers of acrylamide or metharylamide wherein a homo--or copolymer of acrylamide or methacrylamide is chlorinated by means of chloride in a dilute aqueous suspension of a mineral acid at a temperature of to C.
    Type: Grant
    Filed: January 9, 1981
    Date of Patent: October 26, 1982
    Assignee: AKZO N.V.
    Inventors: Hans-Georg Zengel, Manfred Bergfeld, Rainer Zielke
  • Patent number: 4355127
    Abstract: Physical properties particularly including tensile modulus and heat-distortion temperature of high nitrile copolymer resins are improved by including therein a processing aid, such as tetra chloro phthalic anhydride, and a filler material, such as clay.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: October 19, 1982
    Assignee: SOHIO
    Inventor: Ralph E. Isley
  • Patent number: 4355116
    Abstract: Stable single film bipolar membranes of prolonged life and improved performance particularly for use in electrodialysis water splitting process, are prepared by introducing a more stable interface in the membrane structure. After the cationic exchange groups are preformed on an insoluble cross-linked aromatic polymeric matrix, the dissociable anionic exchange groups may be introduced more intimately chemically bonded in position by using multi-functional compounds containing mixed tertiary, secondary and primary amine groups, so that the resulting interface is comparatively more stable, and is less likely to be neutralized, therefore, attaining longer life-time and a higher level of performance.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: October 19, 1982
    Assignee: Allied Corporation
    Inventors: Lester T. C. Lee, Kang-Jen Liu
  • Patent number: 4355117
    Abstract: A process is provided wherein a fibrous ion exchange cellulose composite is prepared by agglomerating a hydrophobic polymer and fibrous cellulose and then derivatizing the cellulose to impart ion exchange properties thereto. The process is an improvement over the prior art processes wherein the composite is prepared by agglomerating the polymer with fibrous cellulose which has been converted to ion exchange cellulose prior to agglomeration.
    Type: Grant
    Filed: October 8, 1980
    Date of Patent: October 19, 1982
    Assignee: Nabisco Brands, Inc.
    Inventors: Richard L. Antrim, Louis S. Hurst
  • Patent number: 4355156
    Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: October 19, 1982
    Assignee: The General Tire & Rubber Company
    Inventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal
  • Patent number: 4355140
    Abstract: This invention relates to solid nonionic crosslinked resins containing amine or phosphine borane adducts capable of being used as reducing agents for metal ions, aldehydes, ketones, alkenes and the like.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: October 19, 1982
    Assignee: Rohm and Haas Company
    Inventor: Larry Manziek
  • Patent number: 4354008
    Abstract: A pressure sensitive, hot melt adhesive is prepared by reacting a normally tacky acrylic-based random copolymer containing from 0.5 to 10% by weight of a chelating comonomer with a chelatable transition metal salt. Preferably the adhesives are oven cured for a short time after application. The chelating comonomer is a beta-hydroxypropyl (meth)acrylate ester of an ortho-hydroxy aromatic acid such as 2-hydroxy-3-(2-hydroxy-benzoyloxy)propyl methacrylate. The metallic salt (e.g. zirconium, ferric, cobalt, or aluminum acetylacetonate) contains a metal ion having a valence greater than 1 and a coordination number greater than 2 and an anion capable of forming a volatile by-product. One or more thermally reversible chelate rings incorporating the metal ion are formed thus crosslinking the polymer chains.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: October 12, 1982
    Assignee: National Starch and Chemical Corporation
    Inventor: Martin M. Skoultchi