Patents Examined by Thomas McDonald, Jr.
  • Patent number: 5068313
    Abstract: The present invention relates to a process for minimizing or reducing the amount of residual free hydrazine in polymer latices. The process is particularly useful in the manufacture of hydrogenated nitrile rubber which is resistant to oxidative degradation at high temperatures, as well as resistant to corrosive environments such as acid environments. Nitrile rubbers are useful in the manufacture of fan belts, seals, gaskets, and hoses in increasingly small and hot-running car engines.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: November 26, 1991
    Assignee: Olin Corporation
    Inventor: Henry W. Schiessl
  • Patent number: 5041510
    Abstract: This invention provides novel side chain copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in all-optical and electrooptical light switch and light modulator devices.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: August 20, 1991
    Assignee: Hoechst Celanese Corp.
    Inventors: Diane Allen, Cherylyn Lee, Ronald N. DeMartino
  • Patent number: 5039753
    Abstract: Polymers comprising a polymer backbone having pendant or terminal betadiketone groups which contain at least one trifluoromethyl group. The betadiketone groups may be selected from trifluorocetoacetate groups (general formula I); ##STR1## hexafluoroacetylacetone groups (general formula II); ##STR2## or trifluoro-2,4-pentanedione groups (general formula III); ##STR3## where indicates the polymer backbone, R is an alkyl, substituted alkyl, aryl or substituted aryl group and R.sup.1 is hydrogen, alkyl or substituted alkyl. Neither the R group nor the R.sup.1 group should contain any group which is sufficiently basic to initiate cyanoacrylate polymerization or any group sufficiently acidic to interfere with chain transfer.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: August 13, 1991
    Assignee: Loctite (Ireland) Ltd
    Inventors: John G. Woods, John Rooney, Bernard Ryan, David Phelan
  • Patent number: 5037917
    Abstract: A process for preparing a polymer having perfluorocyclobutane rings by the steps of (a) contacting monomers having at least two dimerizable perfluorovinyl groups; and (b) exposing the monomers to sufficient heat and for a sufficient time that a polymer containing perfluorocyclobutane rings is formed. The invention includes polymers having a backbone comprising hydrocarbyl groups, perfluorocyclobutane rings and non-carbon atoms and polymers of at least 10,000 molecular weight having repeating units [O-(CFR.sub.f).sub.n -O-perfluorocyclobutane].
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: August 6, 1991
    Assignee: The Dow Chemical Company
    Inventors: David A. Babb, Katherine S. Clement, W. Frank Richey, Bobby R. Ezzell
  • Patent number: 5032363
    Abstract: Ion selective parts are described which comprise a polymeric material, an ion selective component and optionally furthermore a plasticizer and which ion sensitive parts are suited for the determination of the concentration or activity of ions in liquid media. The polymeric material of said ion sensitive parts is a copolymer in which 5-25 mol-% of the monomeric units of said copolymer are substituted with one or more hydrophilic substituents which are selected from the group comprising hydroxy groups, carboxylic acid groups, sulphonic acid groups and phosphonic acid groups. The inventive ion selective parts have, compared with corresponding ion selective parts in which the polymeric material is free of the stated hydrophilic groups or has a lower content of said hydrophilic groups, a better stability of the standard potential E.sub.o and a lower asymmetry potential or no asymmetry potential at all.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: July 16, 1991
    Assignee: Willi Moller AG
    Inventors: Wilhelm Simon, Lucas F. J. Durselen
  • Patent number: 5026785
    Abstract: Avidin and streptavidin modified water-soluble polymers are provided, such modified polymers being exemplified by, but not limited to, water-soluble polyacrylamides being substituted by multiple substituents of avidin or streptavidin. The avidin and streptavidin modified polymers provided, may be stored, and later used to bind biotinylated antibiodies, biotinylated toxins, or biotinylated isotope-labelled proteins, thus producing homo- or heteroconjugates of known composition. A process for the preparation of certain of the avidin or streptavidin modified polymers and conjugates thereof is also provided.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: June 25, 1991
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Michael Mage, Bernardetta Nardelli, Louise McHugh
  • Patent number: 5021529
    Abstract: An interpolymer that is substantially devoid of formaldehyde and that does not evolve formaldehyde nor decomposes to produce any substantial amount of formaldehyde, is used in the production of impregnated or treated paper, woven and nonwoven fabrics. The interpolymer is produced in latex form by polymerizing in the presence of water, an emulsifier and in initiator, a monomer charge containing at least one polymerizable ethylenically unsaturated monomer and a N-alkylol amide of an alpha, beta ethylenically unsaturated carboxylic acid where the alkylol group contains at least two carbon atoms. Alternatively, the N-alkylol amide can be produced in situ by the reaction of amide of an alpha, beta ethylenically unsaturated carboxylic acid with the corresponding aldehyde to give the desired N-alkylol amide having at least two carbon atoms in the alkylol group.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: June 4, 1991
    Assignee: The B. F. Goodrich Company
    Inventor: Robert Y. Garrett
  • Patent number: 5021602
    Abstract: Novel compounds have at least one perfluorocyclobutane ring and at least two functional groups suitable for forming condensation polymers. Preferably the compounds have a structures represented by Formula II: ##STR1## wherein R and R' independently represent optionally inertly substituted groups; X and X' represent any molecular structures which link R and R' with the perfluorocyclobutane ring; n and n' are the number of G and G' groups, respectively; and G and G' independently represent any reactive functional groups or any groups convertible into reactive functional groups. The compound are preferably prepared by a process of thermally dimerizing trifluorovinyl compound to form a compounds of Formula IG.sub.n --R--X--CF.dbd.CF.sub.2wherein G represents G or G' in Formula II; X represents X or X' of Formual II; and n represents n or n' of Formula II, to form a compound having a perfluorocyclobutane group.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: June 4, 1991
    Assignee: The Dow Chemical Company
    Inventors: Katherine S. Clement, David A. Babb, Bobby R. Ezzell
  • Patent number: 5017627
    Abstract: A composite of a homo- or co-polyolefin having an average molecular weight greater than 100,000 with from 30 to 50% by volume of a particulate inorganic solid for use in endoprosthesis.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: May 21, 1991
    Assignee: National Research Development Corporation
    Inventors: William Bonfield, Jeremy A. Bowman, Marc D. Grynpas
  • Patent number: 5013774
    Abstract: A thermoplastic methacrylimide group-containing resin composition comprised of (a) a methacrylimide group-containing polymer comprising 5 to 100% by weight of units of an imide ring structure represented by the following structural formula (I): ##STR1## wherein R.sub.1 stands for a hydrogen atom, a substituted or unsubstituted alkyl, cycloalkyl, aryl, alkaryl, aralkyl or allyl group having 1 to 20 carbon atoms,and 0 to 95% by weight of units derived from at least one monoethylenically unsaturated monomer, and (b) a small amount of a tetramethylpiperidine derivative is described. A shaped article made from this composition has a highly improved weatherability.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: May 7, 1991
    Assignee: Mitsubishi Rayon Company, Ltd.
    Inventors: Kozi Nishida, Mikiharu Watanabe
  • Patent number: 4988753
    Abstract: A bonding composition comprising an aqueous dispersion is described, which is used to bond natural and synthetic elastomers to metallic and nonmetallic substrates under vulcanizing conditions. Such dispersions contain an organic polymeric film-forming substance, an aromatic polynitroso compound, and a coactivator and optionally contain conventional adhesion promoters, fillers and processing aids. In order to widen the field of application and to ensure a high stability of the bond against corrosive influences, the coactivator particularly consists of phenylene bis-maleic acid imide, but one more of the following may be used: triallyl- cyanurate, triallylisocyanurate, diallylacrylamide, tetraallylterephthalamide, tris(1-methyl-2-propenyl) isocyanurate, trivinylisocyanurate, triallyltrimellitate, diallylphthalate, ethylene-glycoldimethacrylate, trimethylolpropanetrimethacrylate, and 1,3-butyleneglycoldimethacrylate.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: January 29, 1991
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Helmut Rullmann, Adolf Zellner, Manfred Gebhard
  • Patent number: 4987195
    Abstract: Polyacrylamide gels containing bound dye indicator molecules being sensitive to pH variation are treated with an aqueous solution for a period of time until the shifting of the pK value of the gel, due to the treatment, has finished.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: January 22, 1991
    Assignee: Hewlett-Packard Company
    Inventors: Martin Wunderling, Lothar Rupp
  • Patent number: 4983684
    Abstract: It is sometimes desirable to cure rubber compositions utilizing non-sulfur curing agents. The subject invention reveals rubber compositions which can be cured without utilizing sulfur or sulfur containing compounds. The subject invention more specifically disclosed a rubber composition which can be crosslinked by heating which is comprised of (1) at least one rubber having pendant blocked isocyanate groups bound thereto; and (2) at least one compound which contains at least 2 Zerewitinoff active hydrogens.This invention also discloses crosslinking of elastomer compounds containing (1) at least one rubber having functionalized groups containing at least one Zerewitinoff active hydrogen and (2) at least one compound which contains at least two blocked isocyanate groups. This invention also discloses self-curing elastomers containing both blocked isocyanate groups and groups containing at least one active Zerewitinoff hydrogen.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: January 8, 1991
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Arthur H. Weinstein, Howard A. Colvin, Dane K. Parker
  • Patent number: 4966948
    Abstract: A coating composition containing a carboxyl functional polymeric emulsion or dispersion, a carbodiimide and a transition metal catalyst which upon curing provides coatings with improved resistance properties.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: October 30, 1990
    Assignee: Akzo Coatings, Inc.
    Inventors: E. Floyd Godbey, Jr., Norman G. Wolfe, David J. Zepka
  • Patent number: 4963631
    Abstract: The invention provides (co)polymers having the formula (I): ##STR1## wherein M is hydrogen, a metal ion or an ammonium cation;x is 1, 2 or 3;y is an integer from 2 to 100; andn is 1, 2 or 3.The (co)polymers of formula I are corrosion and/or scale inhibitors for the protection of metal surfaces in contact with water.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: October 16, 1990
    Assignee: Ciba-Geigy Corporation
    Inventor: Donald R. Randell
  • Patent number: 4959156
    Abstract: A process for preparing water-scale inhibitors and, more specifically, a neat process for preparing acrylic acid/ethylene glycol graft co-polymers and a method for their use as scale inhibitors.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: September 25, 1990
    Assignee: Olin Corporation
    Inventors: Donald L. Lickei, Michael L. Rosin, Ming Shen
  • Patent number: 4957984
    Abstract: A process for producing a highly water adsorptive polymer, which comprises subjecting an aqueous solution of partially neutralized sodium acrylate wherein 20 to 50% or less of the carboxyl group has been neutralized to its sodium salt, the concentration of the partially neutralized sodium acrylate in the aqueous solution being 45 to 80% by weight, to solution polymerization in the presence of a crosslinking agent and optionally not exceeding 20 mol % based on the partially neutralized sodium acrylate of at least one basic vinyl monomer selected from the group consisting of (meth)acrylamide, N,N-dimethyl(meth)acrylamide, dimethylaminoethyl(meth)acrylamide, 2-vinylpyridine, and 4-vinylpyridine with the use of a water soluble radical polymerization initiator.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: September 18, 1990
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Kiichi Itoh, Takeshi Shibano, Shuhei Yada, Shinji Tsunoi
  • Patent number: 4956400
    Abstract: Functionalized polymer microparticles having particle diameters of from about 200 to about 4000 .ANG. are prepared and are useful in facilitating a variety of flocculation and thickening of dispersions of suspended solids applications.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: September 11, 1990
    Assignee: American Cyanamid Company
    Inventors: Joseph J. Kozakiewicz, David L. Dauplaise
  • Patent number: 4956416
    Abstract: This invention relates to novel reactive amino or hydrazino peroxides (hereinafter generally referred to as "AHP's") and derivatives all having a Structure A:(P--R11--X--(--NH--).sub.x --R22--).sub.y --Q].sub.z Ain which the definitions of P, R11, R22, X, Q and x, y and z are given in the Summary of The Invention section, for example, 4,4-di-(t-butylperoxy)pentanohydrazide (I-1), and the use of these novel compounds in curing unsaturated polyester resins, in initiating polymerization of ethylenically unsaturated monomers, for modifying rheology, for crosslinking and curing olefin polymers and elastomers, for producing novel graft and block copolymers, and for producing novel polymers with covalently bound performance additive functions.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: September 11, 1990
    Assignee: Atochem North America, Inc.
    Inventor: Jose Sanchez
  • Patent number: 4956485
    Abstract: Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which R.sup.1, R.sup.2 =H, C.sub.1 -C.sub.4 alkyl, OCH.sub.3,R.sup.3 =H, C.sub.1 -C.sub.4 alkyl, O--C.sub.1 -C.sub.4 alkyl,R.sup.4 =H, C.sub.1 -C.sub.4 alkyl,R.sup.5 =C.sub.1 -C.sub.4 alkyl,R.sup.6 =H, C.sub.1 -C.sub.4 alkyl.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: September 11, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Edgar Leitz, Hans-Josef Buysch, Ludwig Bottenbruch, Karl-Heinz Ott