Patents Examined by Earl A. Nielsen
  • Patent number: 5122586
    Abstract: Disclosed are a composition comprising polyether compounds, obtained by addition copolymerization of a mixture of 4-vinylcyclohexene-1-oxide and a compound having at least two epoxy groups with a compound having at least one active hydrogen atom, and a composition comprising epoxy compounds obtained by epoxidation of the composition of the polyether compounds. The invention also relates to processes for production thereof.The disclosed composition comprising epoxy compounds has a higher softening temperature compared that produced by polymerization of only 4-vinylcyclohexene-1-oxide with a compound having at least one active hydrogen atom.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: June 16, 1992
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Katsuhisa Sakai, Hiroyuki Oshima
  • Patent number: 5091502
    Abstract: The present invention relates to a tetraketone of the structure ##STR1##wherein M is a metal atom and R is selected from phenyl, alkyl substituted phenyl or halogen substituted phenyl. The process to prepare this tetraketone is disclosed. The present invention also relates to a process to produce the tetraketone structure(I). The present invention also relates to the novel polymer of the structure: ##STR2##and to the process to produce this novel polymer. R is as defined hereinabove, and Ar is a tetraamine substituted organic moiety having at least one aromatic ring. These polymers are useful as liquid crystals and in non-linear optical devices.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: February 25, 1992
    Assignee: General Petrochemical Industries Ltd
    Inventors: Subhash C. Narang, Susanna Ventura, Tilak R. Bhardwaj
  • Patent number: 5077376
    Abstract: A latent hardener material for epoxy resins comprising a combination ofHardener (A) which is a reaction product of phthalic anhydride and diethylenetriamine, andHardener (B) which is a reaction product of a polyfunctional epoxy compound, an imidazole compound and a carboxylic acid anhydride.A combination of latent hardeners (A) and (B) can achieve cure of an epoxy resin composition in 15 minutes at 76.degree. C. A one part epoxy resin composition comprising an epoxy resin in admixture with a combination of hardeners (A) and (B) has a good shelf life.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: December 31, 1991
    Assignee: Loctite (Ireland) Ltd.
    Inventor: John Dooley
  • Patent number: 5077385
    Abstract: A polymer material having barrier properties prepared from a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, a process for preparing this polymer material, a laminar structure and an article prepared from the polymer material.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: December 31, 1991
    Assignee: Shell Oil Company
    Inventors: Leonard E. Gerlowski, John R. Kastelic
  • Patent number: 5071951
    Abstract: A hardening agent for epoxy compounds prepared by reacting A) at least one member of the group consisting of polyalkyleneetherdiols and polyalkyleneetherpolyols with B) at least one polyisocyanate with a molar ratio of hydroxy groups to isocyanate group of 1:1.8 to 3, reacting the resulting product with C) an amine having at least one free primary or secondary amino group and at least one protected primary amino group with a molar ratio of isocyanate to amino groups of 1:1 to 2 and subjecting the latter product to hydrolysis useful for preparation of flexible hardened products with excellent mechanical properties.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: December 10, 1991
    Assignee: Rutgerswerke AG
    Inventors: Grundke Ulrich, Alfred Mathes, Achim Hansen, Rolf Herzog
  • Patent number: 5068293
    Abstract: The invention relates to naphthol-based epoxy resins of the general formula (I) ##STR1## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15, naphthol aralkyl resins which are intermediates for said epoxy resins, a process for the preparation of said naphthol aralkyl resins, and epoxy resin compositions containing said naphthol-based epoxy resins which are highly heat- and moisture-resistant, possess excellent impact strength and other mechanical properties, and are useful for such applications as lamination, molding, casting, and adhesion.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: November 26, 1991
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Masashi Kaji, Takanori Aramaki, Norito Nakahara, Yasuharu Yamada
  • Patent number: 5068307
    Abstract: A polyamideimide having an inherent viscosity of above 0.48 which comprises a unit of the following formula (II) ##STR1## and a unit of the following formula (IV) ##STR2## as main units forming the molecular chains of the polyamideimide, and an intimate mixture of the polyamideimide and a plasticising material for the polyamideimide.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: November 26, 1991
    Assignee: Teijin Limited
    Inventors: Shigeyoshi Hara, Hiroo Inata, Shunichi Matsumura
  • Patent number: 5066735
    Abstract: Electrical laminates are prepared from prepreg materials prepared by impregnating a substrate with a laminating varnish comprising a solvent solution of a curable composition comprising (A) a mixture of at least one epoxy resin having an average of more than 1 but not more than 2 vicinal epoxy groups per molecule and at least one epoxy resin having an average of more than 2 vicinal epoxy groups per molecules; (B) a mixture of at least one phenolic hydroxyl-containing compound having an average of more than 1 but not more than 2 phenolic hydroxyl groups per molecule and at least one phenolic hydroxyl-containing compound having an average of more than 2 phenolic hydroxyl groups per molecule; and (C) at least one catalyst for effecting the reaction between (A) and (B).
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: November 19, 1991
    Assignee: The Dow Chemical Company
    Inventors: Louis L. Walker, Paul A. Larson
  • Patent number: 5066764
    Abstract: This invention relates to ditertiary-butyl substituted bridged di(cyclohexylamines) where the tert-butyl substituent is alpha to the amine group and to polyepoxide formulations incorporating the di(cyclohexylamine). The formula of the diamine is: ##STR1## wherein R is tert-butyl. The di(tertiary butyl)methylene bridged cyclohexylamines have delayed reactivity when incorporated in epoxy resins and they also enhance physical properties in high resilience polyurethane foams.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: November 19, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jeremiah P. Casey, Peter A. Lucas, Menas S. Vratsanos
  • Patent number: 5061743
    Abstract: Certain hydroxy alkanoate polymers, such as 3-hydroxybutyrate polymers, when obtained by solvent extraction from fermentation masses, can have long cycle times during thermal processing due to a low rate of crystallization. A combination of (a) an organophosphonic or organophosphoric acid or ester with (b) an oxide, hydroxide, or carboxylate of a metal of Groups I to V is an effective nucleating agent.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: October 29, 1991
    Assignee: Imperial Chemical Industries plc
    Inventors: John M. Herring, Andrew Webb
  • Patent number: 5057556
    Abstract: A non-gelled amine-epoxide reaction product and acid addition salts thereof where the product is obtained by co-reacting;a) a secondary amine NHR.sup.1 R.sup.2, wherein R.sup.1 and R.sup.2 the same or different are C.sub.2 or C.sub.3 hydroxyalkyl groups,b) a polyepoxide,c) optionally a polyoxyalkylene polyamine,d) a product of the reaction between an epoxide with at least two epoxy groups and which contains less than 40% by weight of aromatic groups, and an amine of formula (1):NR.sup.3 R.sup.4 (CH.sub.2)n NH.sub.2 (1)in which n is from 2 to 6, and where R.sup.3 and R.sup.4, the same or different are methyl or ethyl, and optionally,e) a monoepoxidethe components of product (D) being chosen so that the non-gelled amine epxoide reaction product is a liquid at temperature above -5.degree. C.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: October 15, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventor: Richard P. Redman
  • Patent number: 5057559
    Abstract: Cationic paint binders based on the reaction products of epoxide compounds with substituted carbamic acid derivatives and the use thereof in the formulation of cathodically deposited paints are described. The carbamic acid derivatives are urethanes, ureas, allophanates, and biuret compounds. Crosslinking functionality and/or protonatable groups are introduced by a suitable selection of blocking agents for the isocyanate compounds utilized. The reaction between the epoxide compounds and carbamic acid derivatives takes place in the presence of basic groups under relatively mild conditions; and, even when several carbamic acid moieties are present in a molecule, a readily soluble product is obtained.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: October 15, 1991
    Assignee: Vianova Kunstharz, A.G.
    Inventors: Willibald Paar, Rudolf Schipfer
  • Patent number: 5057555
    Abstract: A coating composition useful for a finish for automobiles and trucks in which the film forming binder contains reactive binder components of about(a) 25-90% by weight, based on the weight of the binder, of an acrylic polymer having at least two reactive anhydride groups composed of polymerized monomers of an ethylenically unsaturated anhydride and polymerized monomers from the group consisting of alkyl methacrylate, alkyl acrylate and any mixtures thereof, wherein the alkyl groups have 1-8 carbon atoms and the polymer has a weight average molecular weight of about 2,000-50,000;5-50% by weight, based on the weight of the binder, of a glycidyl component having at least two reactive glycidyl groups;5-50% by weight, based on weight of the binder, of a polymeric component containing multiple hydroxy groups; andthe composition contains about 0.1-5% by weight; based on the weight of the binder, of a catalyst.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: October 15, 1991
    Inventors: Donald A. White, Robert J. Barsotti, Patrick H. Corcoran, Lili W. Altschuler
  • Patent number: 5057557
    Abstract: Epoxy resins are modified by reaction with an acidified polytertiary amine-containing compound. These modified epoxy resins when cured result in products having improved properties.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: October 15, 1991
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, Pong S. Sheih, John M. McIntyre
  • Patent number: 5053475
    Abstract: An epoxy resin composition characterized by comprising, as essential components,(A) a bifunctional epoxy resin,(B) a trifunctional epoxy resin,(C) a phenol compound represented by the following formula ##STR1## (X.sub.1 to X.sub.8 each represent Br, Cl or H and at least four of X.sub.1 to X.sub.8 each represent Br or Cl; R.sub.1 and R.sub.2 each represent H or CH.sub.3), and(D) 4,4'-diaminodiphenyl sulfone or 3,3'-diaminodiphenyl sulfone.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: October 1, 1991
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hisashi Tada, Akira Agata, Masahiro Saruta, Takashi Murata, Takatoshi Kubo
  • Patent number: 5053478
    Abstract: Production of polyenaminonitriles including those which can be cyclized to very stable poly(aminoquinolines) without the evolution of any small molecules and thus in a manner free of volatiles. The polyenaminonitriles are polymers which have desirable dielectric properties, and include those which can be cyclized to poly(aminoquinolines) without the evolution of volatiles to make defect-free films and composites of similar dielectric properties because of this characteristic.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: October 1, 1991
    Inventors: James A. Moore, Douglas Robello
  • Patent number: 5053485
    Abstract: A polymer lactide is prepared by the polymerization of meso-3,6-dimethyl-1,4-dioxane-2,5-dione or mesodilactide and, if desired, other monomers. The mesolactide monomer has preferably a free acid content of less than 1 meq/kg dilactide and is then polymerized in a manner known per se. The compositions containing polymesolactide obtained according to this process do not posess the typical characteristics of poly-DL-lactide, poly-D-lactide or poly-L-lactide. A shorter degradation time of a substrate based on the present polymer is unofficial for several purposes. The present polymers have a good biocompatibility and are thus suited for bone plates, clamps and sutures and controlled release of biologically active compounds. The present polylactides and/or copolymers thereof have the benefit of a good biodegradability, biocompatibility, non-toxicity and non-mutagenicity.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: October 1, 1991
    Assignee: C.C.A. Biochem B.V.
    Inventors: Jan Nieuwenhuis, Arie C. Mol
  • Patent number: 5053476
    Abstract: An epoxy resin composition suitable for use as a casting resin for the potting of an ignition coil is disclosed which comprises:(A) a mixture containing(a.sub.1) a liquid, Bisphenol-type epoxy resin, and(a.sub.2) an inorganic filler,(a.sub.3) a polyether polyol; and(B) a liquid curing agent including(b.sub.1) an acid anhydride, and(b.sub.2) an imidazole compound.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: October 1, 1991
    Assignee: Somar Corporation
    Inventors: Ichiro Akutagawa, Kunimitsu Matsuzaki, Toshio Matsuo, Toru Shirose
  • Patent number: 5051401
    Abstract: A poly-amino acid compound capable of inhibiting mineral deposition, which has the structure:poly (X).sub.m (Y).sub.nwhereeach X independently is aspartate, glutamate, glutamine, asparagine, or anionic derivatives of these amino acids, or phosphoserine,each Y independently is a phosphorylated amino acid such as phosphoserine, phosphohomoserine, phosphotyrosine, phosphothreonine, phosphoglutamine, phosphoasparagine, or mixtures of these residues,m is 2 to 150,n is 1 to 3, andn+m is .gtoreq.5, andsalts of these peptides.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: September 24, 1991
    Assignee: University of South Alabama
    Inventor: C. Steven Sikes
  • Patent number: 5051492
    Abstract: A process for the preparation of a polyether resin having an epoxy group content of less than 0.2 meq/g and containing or average n/3-0.5 to n/3+2.5 primary hydroxyl groups, the process comprising reacting a glycidyl ester of a C.sub.9-11 branched aliphatic acid with an aliphatic primary polyhydric alcohol having n primary hydroxyl groups and 5 to 16 carbon atoms, n having a value of 3 to 6, in the presence of an etherification catalyst selected from a tin, zinc or iron compound.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: September 24, 1991
    Assignee: Shell Oil Company
    Inventors: Olivier L. P. Andre, Henricus P. H. Scholten