At Least One Monomer Is Nonhydrocarbon Material Patents (Class 526/238)
  • Patent number: 10259895
    Abstract: There is provided a process for preparing a branched conjugated diene polymer by copolymerizing 1 to 100% by weight of a branched conjugated diene compound (1) monomer: wherein R1 is an aliphatic hydrocarbon having 6 to 11 carbon atoms, with 99 to 0% by weight of a conjugated diene compound (2) monomer: wherein R2 and R3 are the same or different and each is a hydrogen atom, or the like, and/or 99 to 0% by weight of a vinyl compound (3) monomer: wherein R4 is an aliphatic hydrocarbon group having 6 to 10 carbon atoms, or the like, wherein the process comprises a step of polymerizing by adding a monomer solution successively into a catalyst solution. The branched conjugated diene polymer is useful as a rubber component for a tire for improving processability.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: April 16, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kensuke Washizu
  • Patent number: 9926386
    Abstract: An object of the present invention is to provide a living radical polymerization catalyst that is excellent in terms of safety and cost, and is applicable to various vinyl monomers, and to provide a method for producing a polymer using this living radical polymerization catalyst. The living radical polymerization catalyst contains at least one member selected from the group consisting of alkali metal halide compounds and alkaline earth metal halide compounds.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: March 27, 2018
    Assignee: Kyoto University
    Inventor: Atsushi Goto
  • Patent number: 8927666
    Abstract: The present invention relates to the polymerization and copolymerization of monomers in the presence of fluorinated propylene solvents. More particularly, the present invention relates to the use of polymerization mediums suitable to polymerize one or more monomers to form polymers and/or copolymers, with a tetrafluoropolypropylene being used as a solvent or diluent for the one or more monomers.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 6, 2015
    Assignee: Honeywell International Inc.
    Inventors: Raymond H. Thomas, Hang T. Pham, Rajiv R. Singh
  • Patent number: 8815971
    Abstract: A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: August 26, 2014
    Assignee: ATRP Solutions, Inc.
    Inventors: Wojciech Jakubowski, James Spanswick
  • Publication number: 20140194576
    Abstract: A rubber composition containing a rubber component having an olefinic double bond, and an isobutylene polymer having a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), wherein the content of a low molecular weight substance whose molecular weight is 1000 or less in the isobutylene polymer is 5% by mass or less based on the total amount of the isobutylene polymer. [wherein X represents a divalent group, Y represents a substituted or unsubstituted alicyclic group having an unsaturated bond, and n represents 0 or 1.
    Type: Application
    Filed: June 29, 2012
    Publication date: July 10, 2014
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Zhengzhe Jin, Tsutomu Takashima, Tsuyoshi Yamaguchi, Tatsuya Chiba
  • Publication number: 20140114036
    Abstract: A method for producing polymer particles includes a suspension step of suspending a first liquid mixture containing an oily olefin monomer and a radical polymerization initiator in a second liquid mixture containing water, an iodide ion, and an iodine molecule, to prepare a suspension in which an oil droplet containing the oily olefin monomer and the radical polymerization initiator is dispersed in the water containing the iodide ion and the iodine molecule, a synthesis step of synthesizing an iodine compound by allowing a radical generated by cleavage of the radical polymerization initiator to react with the iodine molecule in the oil droplet, and a polymerization step of polymerizing the oily olefin monomer in the oil droplet.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Hiratani, Shinnosuke Koji, Kazumichi Nakahama
  • Patent number: 8592538
    Abstract: Azeotropic or azeotrope-like compositions of the present technology include methyl chloride and at least one hydrofluorocarbon or hydrofluoro-olefin. In some examples, the at least one hydrofluorocarbon or hydrofluoro-olefin can be selected from the group consisting of 1,1,1,2-tetrafluoroethane and 1,3,3,3-tetrafluoropropene. The azeotropic or azeotrope-like compositions can be used as solvents or diluents in polymerization processes, including slurry polymerization processes.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 26, 2013
    Assignee: Honeywell International Inc.
    Inventors: Raymond Hilton Thomas, Hang T. Pham, Rajiv Ratna Singh, Natalie Merrill
  • Patent number: 8541524
    Abstract: Process of controlled free-radical polymerization in aqueous dispersion for the preparation of a block copolymer at least one block of which is a block of a halogenated polymer using molecular iodine and at least one oxidant whose solubility in water is at least 10 g/l for the synthesis of the first block of the block copolymer.
    Type: Grant
    Filed: July 4, 2007
    Date of Patent: September 24, 2013
    Assignee: Solvay (Societe Anonyme)
    Inventors: Christophe Fringant, Yves Vanderveken, Patrick Lacroix-Desmazes, Jeff Tonnar
  • Publication number: 20130158152
    Abstract: An interpenetrating polymer network includes ?CH2—CH2—O?n segments, and is formed by polymerizing a first monomer R1—O?CH2—CH2—O?nR2 with a second monomer R3—O?CH2—CH2—O?mR4 under an initiator. Each “R1”, “R2” and “R3” includes —C?C— group or —C?C— group. The “R4” includes an alkyl group or a hydrogen atom. The “m” and “n” are integer. Molecular weights of the first monomer and the second monomer are more than or equal to 100, and less than or equal to 800. The first monomer is less than or equal to 50% of the second monomer by weight. A method for making the interpenetrating polymer network is also provided.
    Type: Application
    Filed: October 17, 2012
    Publication date: June 20, 2013
    Inventors: LI WANG, XIANG-MING HE, JIAN-JUN LI, JIAN GAO, CHANG-YIN JIANG
  • Publication number: 20130150539
    Abstract: The present invention is directed to a method for preparation of polyolefins containing exo-olefin chain ends. The method involves quenching a cationic quasi-living polyolefin polymer system with a nitrogen-containing five-membered aromatic ring having at least two hydrocarbyl substituent compounds attached to the ring.
    Type: Application
    Filed: February 12, 2013
    Publication date: June 13, 2013
    Applicants: THE UNIVERSITY OF SOUTHERN MISSISSIPPI, CHEVRON ORONITE COMPANY LLC
    Inventors: CHEVRON ORONITE COMPANY LLC, THE UNIVERSITY OF SOUTHERN MISSISSIPPI
  • Publication number: 20130109813
    Abstract: An improved polymerization method including a method comprising providing a reaction mixture comprising a first monomer, an organic oxidant, and at least one Lewis acid or Brönsted acid, wherein the first monomer comprises at least one optionally substituted heterocyclic ring, wherein the heterocyclic ring comprises at least one heteroatom; and reacting the reaction mixture to obtain a conjugated polymer. The method can reduce the content of undesirable entities in the polymer such as halogens and metals, which can be useful in organic electronic device applications. Purification methods also are adapted to remove organic and inorganic impurities.
    Type: Application
    Filed: October 19, 2012
    Publication date: May 2, 2013
    Applicant: Plextronics, Inc.
    Inventor: Plextronics, Inc.
  • Publication number: 20130066030
    Abstract: Disclosed is a method for making absorbent for metal. In the method, at first, solution of first monomer and solution of second monomer are provided. Then, the solution of the second monomer is introduced into the solution of the first monomer. Finally, a microwave reaction is executed to provide micro-alls of absorbent for metal.
    Type: Application
    Filed: September 14, 2011
    Publication date: March 14, 2013
    Applicant: Chung-Shan Institute of Science and Technology, Armaments, Bureau, Ministry of National Defense
    Inventors: Yen-Chung Chen, Chih-kai Chang, Hsiou-Jeng Shy, Ching-Yu Tso, Jen-Bin Won, Ming-Der Ger
  • Patent number: 8247508
    Abstract: An isobutylene-based polymer comprising a structural unit represented by the following formula (1): and a structural unit represented by the following formula (2): wherein X represents a divalent group; Y represents a substituted or unsubstituted alicyclic group having an unsaturated bond in the ring; and n represents 0 or 1.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: August 21, 2012
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Tsutomu Takashima, Akira Shiibashi, Tsuyoshi Yamaguchi
  • Publication number: 20120136130
    Abstract: An isobutylene-based polymer comprising a structural unit represented by the following formula (1): and a structural unit represented by the following formula (2): wherein X represents a divalent group; Y represents a substituted or unsubstituted alicyclic group having an unsaturated bond in the ring; and n represents 0 or 1.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 31, 2012
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Tsutomu Takashima, Akira Shiibashi, Tsuyoshi Yamaguchi
  • Patent number: 7884161
    Abstract: The present invention provides a method for preparation of an 1-alkene-acrylate based copolymer comprising a step of a radical polymerization reaction of 1-alkene and acrylate based monomer under presence of a metal oxide or Lewis acid, and a method for preparation of an alkene-acrylate based copolymer comprising reacting alkene with an acrylate based monomer under presence of a metal oxide. In the method of preparation according to the present invention, the process is simple and properties of the copolymer can be easily controlled by preparing the copolymer in a mild condition of 100° C. or less and 200 bar or less. In addition, the amount of the polar group of the copolymer prepared by the method is so high that the copolymer can be used for transparent optical products.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: February 8, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Yoo-young Jung, Byoung-ho Jeon, Bae-kun Shin, Ki-soo Lee, Yong-gyu Han
  • Publication number: 20110028660
    Abstract: A process for the polymerization of allylamine and its subsequent crosslinking in the presence of a dispersing agent.
    Type: Application
    Filed: June 23, 2008
    Publication date: February 3, 2011
    Applicant: Lupin Limited
    Inventors: Girij Pal Singh, Himanshu Madhav Godbole, Umesh Babanrao Rananaware, Vinayak Ravindra Sathe, Sagar Purushottam Nehate
  • Patent number: 7595369
    Abstract: A method of copolymerizing cyclic olefins and polar vinyl olefins, a copolymer produced by the method, and an optical anisotropic film including the copolymer are provided. According to the copolymerization method, a cyclic olefin and a polar vinyl olefin can be effectively copolymerized using a catalyst system composed of a compound containing a group 13 element and a radical initiator. The resulting copolymer is transparent, and has high adhesion, thermal stability, optical anisotropy and strength, and a low dielectric constant. The optical film including the copolymer can be used as a plastic lens, a polarizer protective film, an adhesive film, and a compensation film, and in a LCD display.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: September 29, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Sung Cheol Yoon, Sung Ho Chun, Heon Kim, Tae Sun Lim, Jung Min Lee
  • Patent number: 7576147
    Abstract: A process for the manufacture of natural fiber and polymer composites is described. Thermoplastically processed plasticized soy flour based plastics are used with thermoplastic polymers. Polymers of soy flour and an in situ polymerized polyvinyl polymer which links proteins and carbohydrates in the flour to form the polymer are used. The composites are useful in engineering materials.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: August 18, 2009
    Assignee: Board of Trustees of Michigan State University
    Inventors: Lawrence T. Drzal, Amar K. Mohanty, Wanjun Liu, Kelby Thayer, Manjusri Misra
  • Publication number: 20090137758
    Abstract: The instant invention relates to a process for the preparation of polymeric nitroxide radicals by group transfer polymerization. Further aspects of the invention are the polymers containing the nitroxide radicals as well as their use, in particular as active electrode materials in organic radical batteries.
    Type: Application
    Filed: May 29, 2006
    Publication date: May 28, 2009
    Inventors: Peter Nesvadba, Lucienne Bugnon Folger
  • Patent number: 7091293
    Abstract: The polymerization of polar vinyl monomers in the presence of Lewis acids produces stereoregular vinyl polymers. Polar vinyl monomers may be mixed with Lewis acids to form associations or complexes between the monomers and Lewis acids. The mixtures or monomer-Lewis acid complexes may be polymerized to produce the desire stereoregular vinyl polymers.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: August 15, 2006
    Assignee: North Carolina State University
    Inventors: Hiroaki Kuwahara, Bruce Novak
  • Patent number: 7078473
    Abstract: Radical polymerization process for the preparation of halogenated polymers and block copolymers. Halogenated polymers and block copolymers.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: July 18, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Patrick Lacroix-Desmazes, Romain Severac, Bernard Boutevin, Vincent Bodart, Vincent Kurowski
  • Patent number: 6846888
    Abstract: Thermally stabilized initiator compositions comprising: (a) at least one dialkyl peroxydicarbonate, and (b) a stabilizing effective amount of a compound of Structure I: wherein R1 and R2 are as defined in the summary of the invention section, processes for their preparation and use are disclosed.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: January 25, 2005
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Barbara L. Stainbrook, Michael S. Mendolia, Terry N. Myers, Peter A. Callais, Joseph M. Brennan
  • Patent number: 6709734
    Abstract: Disclosed are a resin sheet that has a resin layer which is made up of a thermoplastic resin and which has a degree of orientation of not less than 0.0002 and not more than 0.0020, and a thermoformed article and laminate structure. The resin sheet is preferably employed in a thermoforming process. Particlarly favorable application of the resin sheet is a paintless film, which is usually thermoformed and then laminated to a molten resin.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: March 23, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kenichi Higashi, Kouichi Yanase
  • Patent number: 6639032
    Abstract: A process for making hyperbranched polymers from An—Lz(XY)m type monomers wherein A is a polymerizable group moiety, XY is a telogen group moiety in which Y is a transferable atom or group which can participate in a transfer reaction with the formation of reactive X*, L is a linkage between A and XY, z is 0 or 1, and n and m are integers of at least 1, comprising: (a) initiating reaction by forming activated species from reaction between either an A or an XY group of the An—Lz(XY)m type monomer and an external stimulus to form activated monomer species with an activated polymerizable group moiety A* or an activated moiety X* derived from the telogen group moiety XY; and (b) polymer segment chain growth by (i) propagation reaction between the polymerizable group A moieties of the An—Lz(XY)m type monomers with the activated moieties A* and X* of activated species, and further reaction between the polymerizable group moieties with the activated moieties of the reaction products thereof, and (ii
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: October 28, 2003
    Assignee: Eastman Kodak Company
    Inventor: Jin-Shan Wang
  • Publication number: 20030158357
    Abstract: A process for making hyperbranched polymers from An-Lz(XY)m type monomers wherein A is a polymerizable group moiety, XY is a telogen group moiety in which Y is a transferable atom or group which can participate in a transfer reaction with the formation of reactive X*, L is a linkage between A and XY, z is 0 or 1, and n and m are integers of at least 1, comprising: (a) initiating reaction by forming activated species from reaction between either an A or an XY group of the An-Lz(XY)m type monomer and an external stimulus to form activated monomer species with an activated polymerizable group moiety A* or an activated moiety X* derived from the telogen group moiety XY; and (b) polymer segment chain growth by (i) propagation reaction between the polymerizable group A moieties of the An-Lz(XY)m type monomers with the activated moieties A* and X* of activated species, and further reaction between the polymerizable group moieties with the activated moieties of the reaction products thereof, and (ii) chain transfer r
    Type: Application
    Filed: November 28, 2001
    Publication date: August 21, 2003
    Applicant: Eastman Kodak Company
    Inventor: Jin-Shan Wang
  • Publication number: 20030135000
    Abstract: A process for producing polymers of &agr;-methylstyrene uses tin IV chloride as a polymerization initiator. Use of tin IV chloride as an initiator allows polymerization to proceed without purification of the monomer prior to processing. Polymerization can be carried out at ambient temperatures with mild exotherms and good polymer yields. The process uses solvents commonly found in a plant producing &agr;-methylstyrene.
    Type: Application
    Filed: December 18, 2001
    Publication date: July 17, 2003
    Applicant: Aristech Chemical Corporation
    Inventors: Ronald A. Andrekanic, Jeffrey S. Salek, Steven E. Mulhall, Yuriy V. Bubnov
  • Patent number: 6538083
    Abstract: This invention concerns a process for the use of hydrogen halides as chain transfer agents in fluoroolefin polymerization.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: March 25, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William B Farnham, Robert C Wheland
  • Patent number: 6316567
    Abstract: The present application relates to polymeric resinous material comprising (1) from 5 to 70 weight percent units derived from limonene; (2) from 5 to 70 weight percent units derived from dicyclopentadiene; (3) from 5 to 45 weight percent units derived from indene; and (4) from 5 to 45 weight percent units derived from alpha-methyl styrene; wherein the sum of the weight percent units derived from limonene and dicyclopentadiene range from 40 to 75 weight percent units of the resin and the sum of the weight percent units derived from indene and alpha-methyl styrene range from 25 to 60 weight percent units of the resin.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: November 13, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Mark Leslie Kralevich, Jr., Edward John Blok, Lawson Gibson Wideman, Paul Harry Sandstrom
  • Patent number: 6268451
    Abstract: A method for preparing a moisture-curable, pseudo-telechelic, silyl-functional polyisobutylene terpolymer is disclosed, said method comprising reacting, in the presence of a Lewis acid and a solvent, (A) an isobutylene monomer; (B) a isopropenylphenyl comonomer having the formula (C) a vinylphenyl comonomer of the formula wherein R′ is a divalent non-aromatic hydrocarbon group having 2 to 6 carbon atoms, R″ is independently selected from alkyl groups having 1 to 10 carbon atoms or aryl groups having 6 to 10 carbon atoms, R is a divalent non-aromatic hydrocarbon group having 2 to 6 carbon atoms, X is independently a hydrolyzable group and n is independently 1, 2 or 3, with the proviso that rAC is greater than 1 and rAB is less than 1, wherein rAB is the reactivity ratio of said isobutylene in the presence of said comonomer (B) and said solvent and rAC is the reactivity ratio of said isobutylene in the presence of said comonomer (C) and said solvent.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: July 31, 2001
    Assignees: University of Massachusetts Lowell, Dow Corning Corporation Lowell
    Inventors: Rudolf Faust, Savvas E. Hadjikyriacou, Toshio Suzuki
  • Patent number: 6258906
    Abstract: The dialkyl peroxydicarbonates with short alkyl chains, are used for the aqueous suspension polymerization of vinyl chloride, in the form of a solution in a dialkyl alkanedicarboxylate. The preferred solvents are hexanedicarboxylates (adipates) derived from adipic acid and C6-C10 alkanols. The peroxydicarbonate concentration of the said solutions is generally 15-40% by weight. The process according to the invention produces vinyl chloride polymers of improved quality resulting in shaped articles exhibiting markedly fewer fisheyes. The invention also relates to a two-stage process for the manufacture of a solution of dialkyl peroxydicarbonates with short alkyl chains which is particularly suited for the aqueous suspension polymerization of vinyl chloride. According to this process an inorganic salt is used in the stage of manufacture of the peroxydicarbonate (first stage) and the latter is subsequently isolated by extraction by means of a water-insoluble solvent (second stage).
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: July 10, 2001
    Assignee: Solvay
    Inventor: Vincent Bodart
  • Patent number: 5998876
    Abstract: The invention is an encapsulated circuit assembly including a chip; a substrate; at least one solder joint, wherein the solder joint spans between the chip and the substrate forming an electrically conductive connection between the chip and the substrate; and an encapsulant formed adjacent the solder joint, wherein the encapsulant comprises a hyperbranched polymer formed by the reaction of a monomer of the formula: (A).sub.n RB, wherein A is a coupling group reactive with B, B is a coupling group reactive with A, n is greater than 1, and R is a group selected from the group consisting of an aromatic group, an aliphatic group, and mixtures thereof.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: December 7, 1999
    Assignee: International Business Machines Corporation
    Inventors: Kenneth Raymond Carter, Craig Jon Hawker, James Lupton Hedrick, Robert Dennis Miller, Michael Anthony Gaynes, Stephen Leslie Buchwalter
  • Patent number: 5936040
    Abstract: Novel maleimide copolymers have at least two monomeric units, a maleimide unit and a vinyl unit having a pendant group, the pendant group having two to twenty-one carbon atoms, at least one nitrogen atom and at least one oxygen atom. The copolymer has an average molecular weight between about 1,000 and about 6,000,000. Preferred maleimide copolymers include acrylamide/maleimide copolymers, N-vinyl amide/maleimide copolymers, vinyl lactam/maleimide copolymers, alkenyl cyclic imino ether/maleimide copolymers, and acryloylamide/maleimide copolymers. The substantially water soluble maleimide copolymers are useful for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents by reducing the rate of nucleation, growth, and/or agglomeration of gas hydrate crystals in a petroleum fluid stream, thereby inhibiting the formation of a hydrate blockage in the pipe conveying the petroleum fluid stream.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: August 10, 1999
    Assignee: Exxon Production Research Company
    Inventors: Christine Ann Costello, Enock Berluche, Russell Harlan Oelfke, Larry Dalton Talley
  • Patent number: 5854367
    Abstract: The specification discloses a process for cationic polymerization of vinyl aromatic monomers, adhesive compositions containing polymers made by the process and use of the polymers as processing aids for thermoplastic polymers. In the process, a vinyl aromatic monomer is dissolved in an organic solvent containing a complex comprising an in situ formed ester of an unsaturated carboxylic acid and a Lewis acid to provide a polymer having a softening point above about 125.degree. C. and a polydispersity index above about 2.0. Surprisingly, the Lewis acid/acrylate complex causes the reaction to proceed with reduced exothermicity and enables an increase in the softening point and yield as compared with a polymer made without the complex or using other complexes.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: December 29, 1998
    Assignee: Arizona Chemical Company
    Inventors: Jacques Salvetat, Annick Debresie
  • Patent number: 5789507
    Abstract: A method for preparing water-absorbent resins (D) by radically polymerizing a water soluble monomer (A), or a water-soluble monomer (A) and a polysaccharide (B) in the presence of a crosslinking agent (C) and water, wherein the polymerization is conducted under the existence of a thiol compound (E). Water-absorbent resins obtained in the method of the present invention provide high absorption while providing safety with very little amount of a water-soluble component.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: August 4, 1998
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Keiji Tanaka, Masashi Date, Satoshi Tamabuchi, Tsuyoshi Yuki, Kenjiro Tsubota
  • Patent number: 5587446
    Abstract: A process for preparing hyperbranched polymers from AB monomers using a self constructing approach is disclosed. Hyperbranched polymers of a living-like character produced by such process are also disclosed.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: December 24, 1996
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Jean M. J. Frechet, Sadahito Aoshima
  • Patent number: 5587441
    Abstract: A process for preparing hyperbranched polymers from AB monomers using a self constructing approach is disclosed. Hyperbranched polymers of a living-like character produced by such process are also disclosed.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: December 24, 1996
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Jean M. J. Frechet, Sadahito Aoshima
  • Patent number: 5399646
    Abstract: The present invention discloses an alkylidenenorbornene polymer comprising as the essential constituent at least one kind of the structural unit represented by the formula ##STR1## wherein R.sub.1 denotes an alkyl group of 1-4 carbon atoms and R.sub.2 denotes a hydrogen atom or an alkyl group of 1-5 carbon atoms, and a process for producing the same.According to the present invention, an alkylidenenorbornene polymer is obtained which is excellent in light resistance, transparency, heat resistance and moisture resistance and is useful as an optical polymeric material.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: March 21, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Teiji Kohara, Shin-ichiro Tahara, Yoshitsugu Hirokawa, Tadao Natsuume
  • Patent number: 5336745
    Abstract: A method is provided for the direct synthesis of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or of tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: August 9, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Herve M. Cheradame, Robert D. Lundberg, Frank J. Chen, Jean de la Crois Habimana
  • Patent number: 5262502
    Abstract: An isobutylene base polymer with a functional group having repeating units derived from isobutylene and at least one unit of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, a methyl group or an ethyl group and R.sup.2 is a divalent organic group, and a number average molecular weight of 500 to 500,000.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: November 16, 1993
    Assignee: Kanegafuchi Chemical Industry Co., Ltd.
    Inventors: Hiroshi Fujisawa, Kouji Noda, Kazuya Yonezawa
  • Patent number: 5175247
    Abstract: A method is described for removing catalyst residues comprising AlCl.sub.3 and/or its complexes from polymer products deriving from the (co)polymerization of olefinic cuts, the method comprising bringing the polymerized mass into contact with organometallic compounds, treating the resultant mixture with water or with aqueous acid or basic solutions, and separating the organic phase, which is substantially free of inorganic residues.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: December 29, 1992
    Inventors: Ambrogio Magni, Attilio Sioli
  • Patent number: 5173553
    Abstract: Fluoroelastomers characterized by the presence of iodine or bromine atoms at the end of the polymeric chain in an amount equal to or lower than 1 iodine or bromine atom per polymeric chain, and by a bromine content in the chain ranging from 0.05 to 2% by weight referred to the total weight of the monomeric units.Said fluoroelastomers exhibit improved characteristics of processability, particularly as regards the utilization in injection molding processes and the detaching from the molds, as well as of stability to heat.A process for preparing fluoroelastomers containing iodine or bromine atoms at the ends of the polymeric chain, in an amount equal to or lower than 1 iodine or bromine atom per polymeric chain, which process comprises polymerizing mixes of fluorinated monomers (VDF, TFE, HFP, FVE) in bulk, in suspension, in aqueous emulsion, or in solution of organic solvents by means of radical starters, in the presence of compounds capable of providing I.sup.- or Br.sup.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: December 22, 1992
    Assignee: Ausimont S.r.l.
    Inventors: Margherita Albano, Giulio Brinati, Vincenzo Arcella, Enzo Giannetti
  • Patent number: 5149743
    Abstract: Novel halostyrene telechelic polymers having from 2 to about 6 terminal halogens, halostyrene-polyether, block copolymers having ABA type structures in star type structures, depending on the number of halogen terminii in the starting halostyrene block, and a process for their formation is described. The halostyrene polymers are formed by the initiator transfer agent or inifer polymerization method; while the polyether block is polymerized by silver catalysis of monomers such as tetrahydrofuran. The polymers and copolymers have good flame resistance.
    Type: Grant
    Filed: February 15, 1990
    Date of Patent: September 22, 1992
    Assignee: The University of Akron
    Inventors: Joseph P. Kennedy, Miklos I. Zsuga
  • Patent number: 5134211
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, novel cyclic ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: July 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William B. Farnham, Ming-Hong Hung
  • Patent number: 5091489
    Abstract: This invention provides novel azlactone-functional oligomers of 2-alkenyl azlactones in which oligomerization has occurred predominantly via the 2-alkenyl group. Oligomerization of the 2-alkenyl group provides oligomers having 2 to 15 mer units with predominantly carbon-carbon backbone segments. Oligomerized in this fashion, the novel compositions possess azlactone groups which can be reacted with nucleophiles in the normal ring-opening sense. The oligomers are prepared by a novel process in which both Lewis and Bronsted acidic catalysts are effective. The reactive oligomers find utility as crosslinking agents for polymers containing azlactone-reactable nucleophilic groups.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: February 25, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Steven M. Heilmann, Dean M. Moren, Jerald K. Rasmussen, Larry R. Krepski, Sadanand V. Pathre
  • Patent number: 5032653
    Abstract: A method is provided for the direct synthesis of novel polymeric materials functionalized with desirable nitrogen-containing functional groups such as terminal azido, cyano, carbonylamino or thiocarbonylamino groups. Polymerization and functionalization occur in a substantially simultaneous manner. All necessary reactants for the functionalization are present when polymerization is initiated. The nitrogen-containing functional group is provided as a part of a molecule having a release moiety which is preferably resonance stabilized or a tertiary alkyl type and which acts to aid the nitrogen-containing species in functioning as a leaving group.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: July 16, 1991
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Herve M. Cheradame, Robert D. Lundberg, Frank J. Chen, Jean de la Croix Habimana
  • Patent number: 4929800
    Abstract: Hydrocarbon conversion processes are disclosed using a catalyst prepared by a method comprising reacting an adsorbent containing surface hydroxyl groups with a Lewis acid in a halogenated organic solvent.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: May 29, 1990
    Assignee: University of Florida
    Inventors: Russell S. Drago, Edward E. Getty
  • Patent number: 4914166
    Abstract: A non-fouling economical liquid cooled cryogenic polymerization process is disclosed for essentially olefinic monomers. The heat of cooling and polymerization is removed by evaporation of the liquid nitrogen and the nitrogen vapors eliminate the need for moisture traps and drying agents to block the in flow of said moisture.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: April 3, 1990
    Assignee: The University of Akron
    Inventors: Joseph P. Kennedy, Miklos Zsuga
  • Patent number: 4902762
    Abstract: A process for preparing carbon fibers of high strength which includes the steps of homopolymerizing acrylonitrile or copolymerizing acrylonitrile with other vinyl monomers in a concentrated zinc chloride aqeuous solution containing 0.01-5% by weight of hydrogen chloride to form a polymeric solution which is spinned to form precursor filaments which are carbonized to provide carbon fibers.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: February 20, 1990
    Assignee: Nikkiso Co., Ltd.
    Inventors: Koichi Imai, Misao Sumoto, Hiroyuki Nakamura, Namasa Miyahara
  • Patent number: 4866149
    Abstract: A process for treating a polysilazane, characterized in that a polysilazane possessing on average at least two, and preferably at least three, hydrocarbon groups having aliphatic unsaturation per molecule is treated catalytically in the presence of a catalytically efficient amount of a co-ordination catalyst. The polysilazanes treated in this manner possess high thermal resistance and can be used, in particular, as precursors of ceramic products, with a high yield of inorganic product.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: September 12, 1989
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Jean-Jacque Lebrun, Hugues Porte
  • Patent number: 4801669
    Abstract: In the process according to the invention for the quasi-ionic polymerization of acrylic acid derivatives in organic solvents with initiators and zinc halides, the zinc halides are dissolved in the acrylic acid derivatives to be polymerized and the other components of the polymerization mixture are combined with this solution.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: January 31, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Erwin Piejko, Ralph Ostarek, Manfred T. Reetz