Patents Examined by N. Sarofim
  • Patent number: 6166159
    Abstract: Described are high-strength materials which are degradable and resorbable in the human and animal organisms and shaped articles manufactured therefrom, such as implants, based on cured (meth)acrylic acid esters of polyfunctionally hydroxyl-terminated oligomers of lower hydroxycarboxylic acids {polyfunctional (meth)acrylic acid esters}. The invention is characterized in that said materials and/or shaped articles have been three-dimensionally cross-linked by radiation-curing and/or any other, however boron-free, free radical-initiated polymerization of the polyfunctional (meth)acrylic acid esters and exhibit a tensile strength under standard conditions of at least 10 N/mm.sup.2.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: December 26, 2000
    Assignee: Merck Patent GmbH
    Inventor: Wolfgang Ritter
  • Patent number: 6162885
    Abstract: The invention is an amorphous polytetrafluoroethylene or PTFE polymer that is composed of multi-axially oriented PTFE polymer chains. The multi-axial orientation allows the invention to exhibit consistent strength in more than one direction, exhibit excellent creep resistance, and exhibit flexural fatigue resistance.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: December 19, 2000
    Inventor: Bruce G. Ruefer
  • Patent number: 6114426
    Abstract: A pressure-sensitive, flame-retardant adhesive is disclosed comprising a composition fabricated with the polymerization of acrylic esters, dibromostyrene, and vinyl phosphonic acid, with or without acrylic acid, mixed with dispersions of antimony trioxide. The adhesive composition preferably is an emulsion polymer fabricated with dibromostyrene, 2-ethylhexyl acrylate, n-butyl acrylate, and vinyl phosphonic acid, mixed with Sb.sub.2 O.sub.3 in an approximate ratio of 100 parts polymer per about 8-12 parts Sb.sub.2 O.sub.3. Preferred polymers are those containing at least about 11.6% to 15.6% bromine and from 0.25 to 2.5% phosphorous. The adhesive is particularly advantageous in fabricating optical circuit devices.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: September 5, 2000
    Assignee: Lucent Technologies, Inc.
    Inventors: John Joseph Burack, Peter A. Yurcick
  • Patent number: 6063884
    Abstract: Homopolymers and/or copolymers are manufactured by polymerizing ethylenically monounsaturated monomer(s) in an aqueous solution in a reaction vessel containing compounds which contain a phosphorus atom of degree of oxidation less than 5, phosphorous compounds being introduced in amounts of 0.005-0.49 gram-atom phosphorus per mol of unsaturation in said ethylenically unsaturated monomer(s) in the presence of hydrogen peroxide and in the absence of any agent(s) which decomposes hydrogen peroxide thereby forming free radicals, in the absence of any other generator of free radicals, and in the absence of any per salt and/or any other transfer agent.
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: May 16, 2000
    Assignee: Coatex S.A.
    Inventors: Jean-Bernard Egraz, Jean-Marc Suau, Yves Kensicher
  • Patent number: 6051682
    Abstract: Fluoromonomer is polymerized to obtain a fluoropolymer with the polymerization being carried out in a pressurized polymerization reactor containing a polymerization medium comprising liquid or supercritical CO.sub.2. The polymerization medium is withdrawn from the reactor together with the fluoropolymer and flash decompressed to thereby recover the fluoropolymer from the medium.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: April 18, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: F. Edward Debrabander, Paul Douglas Brothers
  • Patent number: 6048953
    Abstract: A curable liquid resin composition containing 100 parts by weight of the following (meth)acrylic liquid resin (A) and 1 to 1,000 parts by weight of a (meth)acrylic monomer (B) having an unsaturated double bond in its molecule and having a number average molecular weight of 1,000 or less, the (meth)acrylic liquid resin (A) being a liquid resin which is obtained by polymerizing monomers containing an alkyl (meth)acrylate monomer (a-1-1) of the formula (1),CH.sub.2 C(R.sup.1)COO--R.sup.2 (1)wherein R.sup.1 is a hydrogen atom or CH.sub.3 and R.sup.2 is an alkyl group,and/or an alkylene glycol (meth)acrylate monomer (a-1-2) of the formula (2) ,CH.sub.2 .dbd.C(R.sup.1)COO(C.sub.n H.sub.2n O).sub.m R.sup.3(2)wherein R.sup.1 is a hydrogen atom or CH.sub.3, R.sup.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: April 11, 2000
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Miki Kawashima, Kunio Horiuchi, Hiroaki Tanaka
  • Patent number: 6037430
    Abstract: A method of improving the strength properties of acrylic-based pressure sensitive resins exposed to sterilizing radiation by using, during interpolymerization of the monomers of the resin, an amount of chain transfer agent adequate to reduce the gel content of the resin to an extent effective to counteract the gain in gel content occurring after exposure to such radiation. The gel content of the resin composition, as made, is no more than about 2.0%.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: March 14, 2000
    Assignee: Solutia Inc.
    Inventor: Ken J. Chiang
  • Patent number: 6037403
    Abstract: A high viscosity fluid composition having a specific gravity of 1 or more, the physical properties of said fluid composition is not impaired for the use of a long period of time, and a vibration energy damping device which is filled with said high viscosity fluid composition. The high viscosity fluid composition comprises a high viscosity hydrocarbon fluid and an inorganic filler.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: March 14, 2000
    Assignee: Nippon Petrochemicals Company Limited
    Inventors: Haruhisa Katase, Sakae Kanai
  • Patent number: 6020445
    Abstract: This invention relates to polymers that are formed by polymerizing a reaction mixture that comprises at least one silicone-containing monomer and at least one hydrophilic monomer. More particularly, this invention relates to polymers formed by polymerizing a reaction mixture that comprises at least one silicone-containing monomer and at least one hydrophilic monomer in the presence of a diluent.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: February 1, 2000
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Douglas G. Vanderlaan, Ivan M. Nunez, Marcie Hargiss
  • Patent number: 6005137
    Abstract: Acrylates having a high degree of halogenation, as well as polymers that include one or more mer units derived from such acrylates provide materials having tailorable optical and physical properties. The polymers find utility particularly in optical devices including optical waveguides and interconnecting devices.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: December 21, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: George G. I. Moore, Fred B. McCormick, Mita Chattoraj, Elisa M. Cross, Junkang Jacob Liu, Ralph R. Roberts, Jay F. Schulz
  • Patent number: 6001932
    Abstract: A copolymer comprising an alkyl acrylate and an unsaturated ester compound represented by the following general formula:CH.sub.2 .dbd.CRCOO(CH.sub.2)nPhOR', (1)CH.sub.2 .dbd.CRCOO(CH.sub.2)nOCO(CH.sub.2)mPhOR', (2)CH.sub.2 .dbd.CHOCO(CH.sub.2)nOCO(CH.sub.2)mPhOR', (3)CH.sub.2 .dbd.CHO(CH.sub.2)nOCO(CH.sub.2)mPhOR' or (4)CH.sub.2 .dbd.CHPh(CH.sub.2)nOCO(CH.sub.2)mPhOR' (5)where R is a hydrogen atom or a methyl group; R' is a hydrogen atom, an acyl group or a trialkylsilyl group; and Ph is a phenylene group, forms a blend rubber having a good heat resistance and a good amine resistance with a fluorine-containing elastomer.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: December 14, 1999
    Assignee: Nippon Mektron, Limited
    Inventors: Kuniyoshi Saito, Iwao Moriyama, Jun Okabe
  • Patent number: 5998554
    Abstract: A simple process for producing acrylic resins excellent in toughness was provided. The process comprises putting a monomer mixture comprising (i) 80 to 99 parts by weight of a methacrylic monomer containing 50% by weight or more of methyl methacrylate and (ii) 1 to 20 parts by weight of a diene-based rubber, in contact with a radical polymerization initiator, then pouring them in a mold and polymerizing the mixture.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: December 7, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Kazuhiro Yokoo
  • Patent number: 5998553
    Abstract: A process for producing a highly water-absorptive polymer, which comprises suspending an aqueous solution containing a water-soluble polymerizable monomer and an optional crosslinking agent into droplets in a hydrophobic organic solvent in the presence of a dispersant and a water-soluble radical polymerization initiator, and allowing the water-soluble polymerizable monomer to polymerize in the droplets, wherein the dispersant is a phosphoric ester surface active agent represented by the following general formula [I]: ##STR1## wherein R.sup.1 represents an alkyl or alkylaryl group having 8 to 30 carbon atoms, R.sup.2 represents OH group or a group of the formula --(CH.sub.2 CH.sub.2 O).sub.m --OR.sup.1, and m and n are an integer of 1 to 30, andthe aqueous solution is successively fed to the hydrophobic organic solvent so that the droplets of different polymerization degrees can be present in the solvent.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: December 7, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Seiichiro Iida, Kiichi Ito, Sueichi Kato
  • Patent number: 5994430
    Abstract: The present invention relates to an antireflective coating composition comprising a novel polymer in a solvent composition. The invention further comprises processes for using the antireflective coating composition in photolithography. The antireflective coating composition comprises a novel polymer and a solvent composition, where the novel polymer of the antireflective coating comprises at least one unit containing a dye that absorbs from about 180 nm to about 450 nm and at least one unit that contains no aromatic funtionality. The solvent may be organic, preferrably, a solvent of low toxicity, or it may be water, which may additionally contain other water miscible organic solvents.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: November 30, 1999
    Assignee: Clariant Finance BVI) Limited
    Inventors: Shuji Ding, Ping-Hung Lu, Dinesh N. Khanna, Jianhui Shan, Dana L. Durham, Ralph R. Dammel, M. Dalil Rahman
  • Patent number: 5990209
    Abstract: Copolymers are disclosed of lower alpha-olefins and HALS-containing monomers, typically 1-(10-undecenyl)-2,2,6,6-tetramethylpiperidine. They may be used for light or heat stabilizing, by themselves or in blends with other polymers.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: November 23, 1999
    Assignees: Aristech Chemical Corporation, Mitsubishi Chemical Corporation
    Inventors: Mark R. Rubino, Steve Mulhall, Edmund P. Whitby, III, Akiyoshi Onishi, Makoto Terauchi
  • Patent number: 5986023
    Abstract: Fluoroaluminate compounds of formula M.sup.+n (AlF.sub.4)n.sup.- wherein n is 1 to 3 and M.sup.+n is N(R.sub.2).sub.4, P(R.sub.2).sub.4, As(R.sub.2).sub.4, HN(R.sub.2).sub.3, H.sub.2 N(R.sub.2).sub.2, H.sub.3 N(R.sub.2), (R.sub.2).sub.3 P.dbd.N.dbd.P(R.sub.2).sub.3, S[N(R.sub.2).sub.2 ].sub.3, ##STR1## (R.sub.2)NCN(R).sub.2, (R).sub.2 N--(C(R).sub.2).sub.k --N(R).sub.3, and ZH.sub.m.sup.+m wherein Z is a base capable of accepting m protons, and various cyclic and aryl groups are disclosed as well as processes for their preparation.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: November 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Leslie Harlow, Norman Herron, David Lincoln Thorn
  • Patent number: 5986150
    Abstract: To provide a fluorine-containing olefin represented, for example, by CH.sub.2 .dbd.CFCF.sub.2 --R.sub.f.sup.6 --(CH.sub.2).sub.k --X.sup.2 [wherein, X.sup.2 is ##STR1## R.sub.f.sup.6 is a fluorine-substituted fluorine-containing alkyl group having 1 to 40 carbon atoms or --OR.sub.f.sup.7 --(Rf.sup.7 is a fluorine-substituted fluorine-containing alkyl group having 1 to 40 carbon atoms or a fluorine-substituted fluorine-containing ether group having 3 to 50 carbon atoms), k is 0 or an integer of 1 to 6]; a fluorine-containing polymer with functional group which is prepared by polymerizing the above-mentioned olefin, has good affinity with various heat-resisting thermoplastic resins and is capable of forming homogeneous dispersion with the thermoplastic resin; and a thermoplastic resin composition comprising the above-mentioned fluorine-containing polymer with functional group and an aromatic polyester or the like as the heat-resisting thermoplastic resin.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: November 16, 1999
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Tetsuo Shimizu, Takafumi Yamato, Masahiro Kumegawa, Yoshihisa Yamamoto
  • Patent number: 5981785
    Abstract: A novel initiator which may be used to prepare a silyl-functional living cationic polymer is disclosed, said initiator having the formula ##STR1## wherein R is independently selected from the group consisting of alkyl groups having 1 to 10 carbon atoms and aryl groups having 6 to 10 carbon atoms, R' is a divalent aliphatic hydrocarbon group having at least 3 carbon atoms, X is halogen, Y is selected from the group consisting of halogen, alkoxy, acyloxy and hydroxyl groups and a is 1, 2 or 3.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: November 9, 1999
    Assignees: University of Massachusetts, Dow Corning Corporation
    Inventors: Rudolf Faust, Savvas E. Hadjikyriacou, Toshio Suzuki
  • Patent number: 5981673
    Abstract: The present invention provides a process for making fluorinated polymers and copolymers having stable end groups. The process includes (1) contacting a fluoromonomer, an initiator capable of producing stable end groups on the polymer chain, and a polymerization medium comprising carbon dioxide, and (2) polymerizing the fluoromonomer. The polymerization medium preferably comprises liquid or supercritical carbon dioxide. Advantageously, the process may also include the step of separating the fluoropolymer from the polymerization medium. The present invention also provides polymerization reaction mixtures useful in the processes of the present invention.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: November 9, 1999
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Timothy Romack
  • Patent number: RE36794
    Abstract: Group IV organometallic compounds, e.g. alkylsilane, or alkylsiloxane compounds, are used as chain transfer agent in the radical initiated polymerization of ethylenically unsaturated monomers, to give polymers comprising non-ionic end groups.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 25, 2000
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Werner M. Grootaert