N-containing Monomer Patents (Class 524/827)
  • Patent number: 4529771
    Abstract: Thermosettable polymeric cyclopentadiene derivatives, method for preparing polymeric cyclopentadiene derivatives, and use of polymeric cyclopentadiene derivatives in curable binder compositions.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: July 16, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: Bruce A. Gruber, Diether Koch, Heimo J. Langer, William R. Dunnavant
  • Patent number: 4525527
    Abstract: Disclosed is a process for preparing water absorbing, cross-linked acrylate resins by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); and (C) a water miscible or a water soluble polyvinyl monomer in an amount of 0.001 to 0.3 weight percent based on the total weight of (A) and (B). In accordance with one embodiment of the invention, the concentration of monomers (A) plus (B) should be at least 70 percent by weight of the polymerization mixture of (A) plus (B) plus (C) to achieve a substantially dry polymer (less than 15 weight percent water) when polymerization is completed by utilizing the exothermic heat of polymerization and cross-linking to drive off water without the need for additional heating to obtain a dry solid.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: June 25, 1985
    Assignee: American Colloid Company
    Inventors: Hisao Takeda, Yasunori Taniguchi
  • Patent number: 4524175
    Abstract: A stable water-in-oil emulsion of a hydrophobe associative copolymer of a water-soluble monomer such as acrylamide and a hydrophobic monomer such as dodecyl methacrylate is formed by subjecting a water-in-oil emulsion of the corresponding monomers to copolymerization conditions in the presence of an oil-soluble initiator such as cumene hydroperoxide. Such copolymers associate in aqueous media containing salts such as sodium chloride to increase the viscosity of such media.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: June 18, 1985
    Assignee: The Dow Chemical Company
    Inventor: Frederick W. Stanley, Jr.
  • Patent number: 4508858
    Abstract: Apparatus and method for the on-site, continuous preparation of aqueous solutions of polymers, especially aqueous solutions of partially hydrolyzed polyacrylamides, for use in secondary and tertiary oil recovery operations. The apparatus comprises a polymerization reactor and a post reactor. Successive batches of a pre-prepared reaction mixture are continuously fed into the polymerization reaction in a manner to form zones or layers in the reactor, each zone or layer comprising a reaction mixture which has reached a different stage or level of completion of the reaction than the zone or layer below and above it. The zones or layers are continuously moved through the polymerization reactor at a rate such that when a zone or layer reaches the outlet of the polymerization reactor, the reaction will have gone to substantial completion. The zones or layers are continuously conveyed from the polymerization reactor to the post reactor.
    Type: Grant
    Filed: February 16, 1983
    Date of Patent: April 2, 1985
    Assignee: Marathon Oil Company
    Inventor: Wayne E. Luetzelschwab
  • Patent number: 4483962
    Abstract: Terpolymer latexes prepared by emulsion polymerization of 2,3-dichloro-1,3-butadiene and a mixture of at least two different unsaturated monomers, said unsaturated monomers being at least individually copolymerizable with 2,3-dichloro-1,3-butadiene, provide adhesive systems which afford adhesive strengths comparable to commercial solvent-based adhesives in bonding natural and synthetic elastomers to rigid and non-rigid substrates. The latexes preferably contain at least one aromatic nitroso compound.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: November 20, 1984
    Assignee: Lord Corporation
    Inventor: John S. Sadowski
  • Patent number: 4454286
    Abstract: A composition of matter comprising (1) an N-methylol monomer of the following general formula: ##STR1## wherein R is hydrogen, lower alkyl (C.sub.1 -C.sub.4), isopropenyl, or phenyl and R.sub.1 is hydrogen or methyl, and (2) a polyalkoxylate substance having at least a portion of its structure represented by (alkylene oxide).sub.x, wherein x is an integer, the composition containing about x molecules of the N-methylol monomer per molecule of polyalkoxylated substance. Such N-methylol monomer/polyalkoxylated complexes are polymerized to yield ungelled cross-linkable N-methylol polymers. The N-methylol polymers are cross-linked in a controlled manner with polyvinyl alcohol.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: June 12, 1984
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Wiley E. Daniels, Dennis J. Nagy
  • Patent number: 4435528
    Abstract: Stable concentrated water-in-oil emulsions of water-soluble polymers such as polyacrylamide are provided by concentrating a water-in-oil preconcentrate emulsion of the water-soluble polymer containing an inverting surfactant in an amount sufficient to reduce the bulk viscosity of the preconcentrate emulsion.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: March 6, 1984
    Assignee: The Dow Chemical Company
    Inventor: William G. Domina
  • Patent number: 4429084
    Abstract: A method for forming a grout composition from multiple components. A first component is mixed in pre-measured amounts along with water in a first mixing tank. A first catalyst is added in pre-measured quantities to the first mixing tank. A second catalyst is mixed in pre-determined quantities with water in a second mixing tank. The aqueous solutions in the first and second mixing tanks are combined to cause a polymerization-cross-linking reaction of the first component which results in gellation of the first component.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: January 31, 1984
    Inventors: Daniel M. Piccirilli, David M. Piccirilli
  • Patent number: 4401789
    Abstract: Methods of preparing viscous aqueous polymer solutions having improved viscosity and stability properties for use in the treatment of subterranean hydrocarbon-containing formations and in enhanced oil recovery processes are provided. More particularly, a method of preparing such viscous aqueous polymer solution in a buffer system that contains a particular buffer and a substantially oxygen free aqueous solvent. Such solvent is used for pH control and contains one or more metal salts.
    Type: Grant
    Filed: July 14, 1981
    Date of Patent: August 30, 1983
    Assignee: Halliburton Company
    Inventor: Charles M. Gideon
  • Patent number: 4396740
    Abstract: The addition of aryl methanamines such as m-xylylenediamine to polymer latices which contain residual acrylonitrile monomer is markedly effective in reducing the measurable free acrylonitrile contents of latices.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: August 2, 1983
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Mary E. Wozny
  • Patent number: 4393173
    Abstract: A composition of matter comprising (1) an N-methylol monomer of the following general formula: ##STR1## wherein R is hydrogen, lower alkyl (C.sub.1 -C.sub.4), isopropenyl, or phenyl and R.sub.1 is hydrogen or methyl, and (2) a polyalkoxylate substance having at least a portion of its structure represented by (alkylene oxide).sub.x, wherein x is an integer, the composition containing about x molecules of the N-methylol monomer per molecule of polyalkoxylated substance. Such N-methylol monomer/polyalkoxylated complexes are polymerized to yield ungelled cross-linkable N-methylol polymers. The N-methylol polymers are cross-linked in a controlled manner with polyvinyl alcohol.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: July 12, 1983
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Wiley E. Daniels, Dennis J. Nagy
  • Patent number: 4390659
    Abstract: Quaternary carboxamide polymers such as N-(triethylammonium ethyl)acrylamide chloride are prepared by simultaneously contacting a carboxamide polymer with an aldehyde such as formaldehyde, a secondary amine such as dimethylamine and a quaternizing agent such as methyl chloride. By such method, quaternary carboxamide polymers useful in a variety of applications such as emulsion breaking and water clarification are readily prepared.
    Type: Grant
    Filed: June 10, 1980
    Date of Patent: June 28, 1983
    Assignee: The Dow Chemical Company
    Inventors: Frederick W. Stanley, Jr., William J. Fairchok
  • Patent number: 4379874
    Abstract: There is disclosed a process for producing a novel polymer composition comprised of a polyacrylonitrile polymer and a block copolymer with acrylonitrile and non-crystalline polymer sequences wherein the polymer composition is formed by the removal of a solvent from a solution of a polyacrylonitrile polymer and a block copolymer with acrylonitrile and non-crystalline polymer sequences.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: April 12, 1983
    Inventor: Vladimir A. Stoy
  • Patent number: 4376850
    Abstract: Water miscible monomers such as acrylamide are polymerized in an aqueous phase in the presence of an initiator containing a borohydride such as sodium borohydride and an easily reduced metal ion such as cupric ion.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: March 15, 1983
    Assignee: The Dow Chemical Company
    Inventor: James W. Sanner
  • Patent number: 4366270
    Abstract: A method for the uniform blending of additives into thermoplastic synthetic resins. A solution or finely divided dispersion of the additive is produced in a polymerizable cyclic ester of the general formula: ##STR1## wherein R represents respectively hydrogen or an alkyl group of 1-18 carbon atoms,A represents a --O-- or --COO-- group,x and y represent integers from 1 to 15, andz represents 0 or 1.This solution or dispersion, optionally after polymerization of the cyclic ester, is admixed to the thermoplastic synthetic resin at the end of its manufacturing process or in a subsequent processing stage.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: December 28, 1982
    Assignee: Chemische Werke Huls A.G.
    Inventor: Jorn Ruter
  • Patent number: 4366194
    Abstract: Aqueous solutions of amide polymers, such as polyacrylamide when treated with small amounts of a water-soluble polyaldehyde and a hypohalite salt at an alkaline pH, react to form firm gels within a short time at ambient temperature. Such gels, which are stable under alkaline as well as acidic conditions, are usefully employed to plug porous subterranean formations, for grouting of leaking soil pipes or wells, and to otherwise render porous structures impermeable to the passage of liquids such as water.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: December 28, 1982
    Assignee: The Dow Chemical Co.
    Inventors: Richard J. Pilny, Thomas W. Regulski