Patents Examined by N. Sarofin
  • Patent number: 6027813
    Abstract: Systems for initiating the polymerization of acrylic monomers comprising (1) organoborane amine complexes and (2) decomplexers comprising at least one anhydride group. Adhesive compositions prepared from the initiator systems advantageously exhibit low levels of mobile constituents, excellent solvent resistance, and good adhesion to low energy surfaces.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: February 22, 2000
    Assignee: 3M Innovative Properties Company
    Inventor: E. John Deviny
  • Patent number: 5969067
    Abstract: Fluorinated vinyl ethers having phosphorus-containing groups are useful as monomers in making fluoropolymers having functional sites.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 19, 1999
    Assignee: E.I. Dupont de Nemours and Company
    Inventors: Paul Douglas Brothers, Ming-Hong Hung, Michael Joseph Michalczyk, Tatsuhiro Takahashi
  • Patent number: 5959051
    Abstract: Vinylphenol polymers are useful materials having many applications, vinylphenol polymers possessing an appropriate molecular weight corresponding to each of the applications are desired. However, it is very difficult to control the molecular weight of vinylphenol polymers, because vinylphenol monomer exhibits a very high reaction rate in the presence of a radical initiator, and it is very difficult to obtain vinylphenol polymers having molecular weight of from eight thousand to one hundred thousand. Further, vinylphenol monomer is very difficult to store, because it is rapidly polymerized even at room temperature. A simple process for preparing vinylphenol polymers having the molecular weight range mentioned above by simply adding methanol to the polymerization system is disclosed. A stabilized composition of vinylphenol suitable for use to prepare vinylphenol polymers, comprising vinylphenol-containing polymerization raw material and methanol as the indispensable constituents is also disclosed.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: September 28, 1999
    Assignee: Maruzen Petrochemical Co., Ltd.
    Inventors: Masao Kaneko, Takeshi Noguchi, Nobuyuki Oka
  • Patent number: 5922833
    Abstract: A process for making a fluoropolymer is disclosed. The process comprises solubilizing a fluoromonomer in solvent comprising a carbon dioxide fluid, and then polymerizing the fluoromonomer to produce a the fluoropolymer. A preferred solvent for carrying out the process is supercritical carbon dioxide; preferred fluoromonomers for carrying out the process are fluoroacrylate monomers such as 1,1-dihydroperfluorooctyl acrylate. The polymerization step is preferably carried out in the presence of an initiator such as azobisisobutyronitrile.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: July 13, 1999
    Assignee: The University of North Carolina at Chapel Hill
    Inventor: Joseph M. DeSimone
  • Patent number: 5916985
    Abstract: The invention relates to a functionalised polymer of formula:(P)--S--X--F (1)in which:(P) is a hydrophobic polymer chain obtained by radical polymerisation of at least one monomer,S represents sulphur,X represents:a saturated or unsaturated linear or branched hydrocarbon chain having 1 to 6 carbon atoms and substituted with at least one COOH or NH.sub.2 group in the free or salified forma peptide chain constituted of 2 to 4 amino acids, particularly natural amino acids,F represents a COOH or NH.sub.2 group, in the free or salified form,with the exception of the .omega.-dicarboxylic macromonomers resulting from the radical polymerisation of a monomer in the presence of a chain transfer agent constituted of thiomalic acid.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: June 29, 1999
    Assignee: LVMH Recherche
    Inventors: Carole Tondeur, Catherine Garel, Henri-Gerard Riess, Alain Meybeck, Jean-Francois Tranchant
  • Patent number: 5886118
    Abstract: This invention relates to a process for polymerizing acrylonitrile, comprising: (A) forming a polymerizable mixture comprising acrylonitrile monomer, solvent and a metal catalyst; (B) contacting said mixture with an initiator, said initiator being selected from the group consisting of sulfonyl halides, halopropionitriles, substituted halopropionitriles in the form of monoadducts derived from sulfonyl halides and acrylonitrile, monoadducts derived from substituted sulfonyl halides and monomers other than acrylonitrile; or polymers containing end groups derived from sulfonyl halides, halopropionitriles, substituted halopropionitriles in the form of monoadducts derived from sulfonyl halides and acrylonitrile, or monoadducts derived from substituted sulfonyl halides and monomers other than acrylonitrile; and (C) polymerizing said acrylonitrile monomer to form a polymer comprised of acrylonitrile.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: March 23, 1999
    Assignee: Case Western Reserve University
    Inventor: Virgil Percec
  • Patent number: 5883163
    Abstract: A light conducting plate for back lighting which comprises a methacrylic copolymer resin comprising 90 to 99.5% by weight of a methyl methacrylate unit and 0.5 to 10% by weight of an alkyl acrylate unit containing 1 to 8 carbon atoms in the alkyl moiety thereof and having a reduced viscosity of 35 to 60 ml/g in chloroform, the chromaticity of said light conducting plate having x and y color coordinates both ranging from 0.01 to 0.001 as obtained according to JIS-Z-8701.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: March 16, 1999
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventor: Nobuyuki Hosonuma
  • Patent number: 5880238
    Abstract: The invention relates to improved carboxylated styrenic polymers suited for use in the graphic arts industries as dispersants for pigments and varnishes. The base polymer comprises polymerized units of styrene and an .alpha.,.beta.-unsaturated monocarboxylic acid, with said polymer incorporating hydrophilic functionality. The improvement in the polymer composition comprises the polymerized incorporation of hydrophilic functionality based upon the half acid ester of an .alpha.,.beta.-unsaturated dicarboxylic acid or anhydride thereof and a polyethylene glycol monoether having greater than three ethylene oxide units. The half ester not only provides surfactant properties to the polymer through the incorporation of the polyethylene glycol ether but also provides carboxyl functionality necessary for water dispersibility. The number average molecular weight is from 1,500 to 20,000 and the acid numbers for these polymers typically range from 125 to 300.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: March 9, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Richard Anthony Bafford
  • Patent number: 5879804
    Abstract: The composite resin powder having particle diameter range capable of being applied by way of fluidization dipping or electrostatic spray coating for forming a fluoro resin surface coating which melts at a lower temperature. 3.0 to 20 parts by weight of EAA resin is added to 100 parts by volume of xylene (86 parts by weight), the mixture is heated at to C. with stirring to dissolve, simultaneously PTFE powder with a particle diameter of 5 to 50 .mu.m is added in an amount of 5 to 25% by weight to that of said EAA resin, then the temperature of the mixture was cooled to a temperature of C. or lower to generate particles.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: March 9, 1999
    Assignee: K.K. Seishin Kigyo
    Inventor: Yukihisa Tsubuku
  • Patent number: 5872181
    Abstract: Improved aqueous emulsion vinyl acetate-ethylene (VAE) polymer adhesives for use in packaging applications and on difficult to bond surfaces such as polyethylene, poly(ethylene terephthalate), and oriented polypropylene. The VAE polymers contain about 55-80 wt % vinyl acetate, 15-45 wt % ethylene, and 0-30 wt % of one or more additional ethylenically unsaturated copolymerizable monomer, based on the total weight of monomers. Cast films of the VAE emulsion polymers of this invention should have a tensile storage modulus (test frequency of 6.28 rad/sec) within the area encompassed by the following data points: 1.times.10.sup.5 and 2.times.10.sup.7 dynes/cm.sup.2 at C., and 1.times.10.sup.3 and 2.times.10.sup.6 dynes/cm.sup.2 at C.; preferably within the area encompassed by the following data points: 1.times.10.sup.6 and 1.5.times.10.sup.7 dynes/cm.sup.2 at C., and 3.times.10.sup.4 and 9.times.10.sup.5 dynes/cm.sup.2 at C.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: February 16, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Christian Leonard Daniels, Randolph J. Lorenz, Richard Joseph Goddard
  • Patent number: 5866664
    Abstract: A process for efficiently utilizing phosphorous acid or salts thereof as a chain transfer agent in the polymerization of monomers, particulary unsaturated carboxylic acid monomers, is provided, where the polymerization is conducted at an in-process solids level of at least 40 percent and in-process neutralization level of at least 30% to produce low molecular weight water-soluble phosphonate-terminated polymers.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: February 2, 1999
    Assignee: Rohm and Haas Company
    Inventors: Thomas Francis McCallum, III, Barry Weinstein
  • Patent number: 5861365
    Abstract: Aqueous cleaning and surface treatment compositions for imparting oil and water repellency to treated surfaces which comprise:(a) fluoroaliphatic radical-containing poly(oxyalkylene) compound;(b) anti-resoiling composition;(c) anionic surfactant compound, preferably one or more selected from alkyl sulfates, alkyl benzene sulfates, and alkane sulfonates as well as salts thereof;(d) organic solvent;(e) citric acid salts, preferably one or more anhydrous and dihydrous sodium citrates(f) waterwherein the are at a neutral or alkaline pH, especially from about 8 to about 10. The compositions are particularly shelf stable, and exhibit excellent shelf stability in pressurized aerosol containers.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: January 19, 1999
    Assignee: Reckitt & Colman Inc.
    Inventors: Andrew Francis Colurciello, Jr., Tracy Ann Ryan, Jeanne Marie Weller, Michael Richard Tyerech, Robert Thomas Delaney
  • Patent number: 5858408
    Abstract: The preent invention relates to a sustained-release oral ointment which comprises a hydrophobic ointment base, an adhesive substance, an aluminum compound and a drug. The ointment is useful as a sustained-release oral ointment which has applicability to an oral mucosa, particularly to a peridontal pocket, sustained-release properties to supply a drug to affected part over a long period of time while maintaining the concentration thereof at a sufficiently high level, and enhanced ratio of utilization of drug (the ratio of the total amount of drug released to affected part to the total amount of drug in the ointment applied).
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: January 12, 1999
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Sadao Sotani, Shosaku Kato, Yasuo Watanabe, Isamu Takakura
  • Patent number: 5846657
    Abstract: Methods for preparing uniformly sized polymer particles comprised of multi-functional monomers such as poly(1,4-butanediol diacrylate) and poly(1,6-hexanediol diacrylate) are disclosed. The particles are of a size, uniformity, and contan physical characteristics that make them ideally suitable for use as spacers in liquid crystal display devices.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: December 8, 1998
    Assignee: Rohm and Haas Company
    Inventor: Jiun-Chen Wu
  • Patent number: 5824757
    Abstract: Resins and carbon-carbon composites are formed from di(alken-1-yl) borinic acids and borinates, either as monomers or as nonpolymerizing additives in a monomer mixture, with the effect of sharply increasing the oxidative stability of the cured product. The compounds have the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are H, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.5 -C.sub.7 cycloalkenyl, aryl, (C.sub.1 -C.sub.6 alkyl)-substituted aryl, (C.sub.2 -C.sub.6 alkenyl)-substituted aryl, or (C.sub.2 -C.sub.6 alkynyl)-substituted aryl, at least one of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 being other than H.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: October 20, 1998
    Assignee: Aerojet-General Corporation
    Inventors: Stephen John Backlund, Robert Earl Olsen
  • Patent number: 5814678
    Abstract: The present invention provides for the regulation of the rate of a chemical reaction within the aqueous micelles within a microemulsion of water in supercritical carbon dioxide. Increase in pressure increases the concentration of an ionized reaction component (reactant, catalyst or reaction initiator) within the reverse micelles, thus increasing the rate of the reaction or allowing the reaction to initiate. Similarly, the reaction rate can be slowed by decreasing the pressure, thus decreasing the amount of water and ionized components in the reverse micelles. Decrease in the pressure below a critical level results in the reaction stopping when the concentration of a ionized reaction component falls to a sufficiently low level.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: September 29, 1998
    Assignee: University Technology Corp.
    Inventor: Theodore W. Randolph
  • Patent number: 5811502
    Abstract: An ocular lens material made of a polymer obtained by polymerizing polymerizable components comprising a monomer of the formula (I): ##STR1## wherein R.sup.1 is a group of the formula: ##STR2## wherein R.sup.3 is a hydrogen atom or a methyl group, or a group of the formula: ##STR3## R.sup.2 is a C.sub.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: September 22, 1998
    Assignee: Menicon Co., Ltd.
    Inventor: Haruyuki Hiratani
  • Patent number: 5807563
    Abstract: Disclosed are methods for draping a surgical incision site prior to surgery. Specifically, the methods of this invention involve the in situ formation of a cyanoacrylate polymeric drape over the skin surface at the surgical incision site. An incision is then made through this surface and the surgery is then conducted through the incision.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: September 15, 1998
    Assignee: MedLogic Global Corporation
    Inventors: Ian N. Askill, Richard J. Greff, Michael M. Byram, Richard T. VanRyne
  • Patent number: 5789511
    Abstract: A polymer comprising styrene or substituted-styrene and carboxylated monomer is prepared by a solution polymerization process, comprising first a polymerization step, followed by a neutralization step, and then a distillation step. The polymers have relatively low molecular weights, generally below about 10,000, and can have higher styrene content than has hither been possible. The polymers are found to have good soil release properties and so to be particularly useful in cleaning compositions for fabric or hard surface cleaning.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: August 4, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Paul T. Kimpton, Robert W. Hodgetts
  • Patent number: 5785979
    Abstract: The compositions of the present invention relate to improved personal cleansing compositions comprising a surfactant system, from above about 0.1% to below 1% of a nonionic or anionic water soluble polymer, a phase separation initiator and water. These compositions provide improved lathering and conditioning benefits.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: July 28, 1998
    Assignee: The Procter & Gamble Company
    Inventor: Robert Lee Wells