Patents Examined by S. A. Acquah
  • Thermosetting aromatic resin composition
    Patent number: 4866157
    Abstract: A thermosetting resin composition is disclosed which comprises a fusible product obtained by a method including the steps of:providing a mixture which comprises (a) a raw material containing one or more condensed polynuclear aromatic compounds having at least two condensed benzene rings, (b) a crosslinking agent containing an aromatic compound having one or more aldehyde groups directly bonded to the aromatic nuclei thereof, and (c) an acid catalyst; andreacting the mixture at a temperature sufficient to effect the crosslinking of the one or more condensed polynuclear aromatic compounds, thereby to obtain the fusible product. A further heat treatment of the thermosetting resin composition gives a COPNA resin which is an infusible, insoluble, condensed, polynuclear aromatic hydrocarbon resin.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: September 12, 1989
    Inventors: Sugio Otani, Michiya Ota, Akira Kojima
  • Polyester resin for toner and process for its production
    Patent number: 4866158
    Abstract: A polyester resin for toner, which consists essentially of (a) from 0.5 to 50 mol %, based on the entire alcohol components, of at least one trihydric or higher polyhydric alcohol, (b) from 50 to 99.5 mol %, based on the entire alcohol components, of at least one diol and (c) at least one member selected from the group consisting of dicarboxylic acids and lower alkyl esters thereof, and which has a softening temperature of from 90.degree. to 170.degree. C., a glass transition temperature (Tg) of from 30.degree. to 70.degree. C., an acid value of from 0.5 to 15 mgKOH/g and a gel content of from 1.5 to 40%.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: September 12, 1989
    Assignee: Mitsubishi Rayon Company
    Inventors: Shinji Kubo, Ryo Funato, Noriyuki Tajiri, Hirokazu Ito, Hitoshi Iwasaki
  • Process for producing polyester
    Patent number: 4861860
    Abstract: A polyester having a high quality is produced by stirring its polycondensation reaction mixture in such a way that the stirring rate is reduced continuously in a stepwise manner corresponding to an increase in the melt viscosity as the reaction proceeds so that the stirring load is substantially constant after the viscosity of the reaction system has reached an arbitary value between 20 and 800 P until the completion of the reaction.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: August 29, 1989
    Assignee: Polyplastics Co., Ltd.
    Inventors: Kohji Ohishi, Minoru Akiyama, Ryuichi Sekita
  • Saturated polyesters containing imide groups and terminal carboxyl groups
    Patent number: 4861861
    Abstract: Saturated polyesters containing terminal carboxyl groups and, per molecule, at least one side chain, containing imide groups, of the formula I ##STR1## in which R.sup.1 and R.sup.2, for example, together with the carbon atoms to which they are attached, are a cyclohexane ring and R.sup.3 is ethylene, the side chains of the formula I being attached via ester linkages to tribasic or tetrabasic aromatic carboxylic acids present in the polyester main chain, the average molecular weight M.sub.w of the polyester being between 3,000 and 20,000 and the polyester having an acid number of 10 to 200. The polyesters are suitable, for example as a composition containing epoxide resins, for use as casting resins or in surface protection, particularly for the preparation of heat-resistant and weather-resistant powder paints.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: August 29, 1989
    Assignee: Ciba-Geigy Corporation
    Inventor: Claudio A. Gabutti
  • Polyurethane powder coating compositions
    Patent number: 4859760
    Abstract: Disclosed are polyurethane powder coating compositions comprising at least one amorphous polyester, at least one semi-crystalline polyester, and a polyisocyanate crosslinking agent. Coatings made from such powder compositions provide a unique combination of good hardness and flexibility, while the powder from which they are made has good storage stability.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: August 22, 1989
    Assignee: Eastman Kodak Company
    Inventors: Fred W. Light, Jr., James D. Hood, Yeong-Ho Chang
  • Wholly aromatic polyester and process for its production
    Patent number: 4857626
    Abstract: A wholly aromatic polyester consisting essentially of:(a) from 2 to 50 equivalent % of a 3,3'-biphenyldicarboxylic acid residue;(b) from 10 to 40 equivalent % of a dicarboxylic acid residue excluding the residue of 3,3'-bisphenyldicarboxylic acid;(c) from 10 to 52 equivalent % of a dioxy compound residue of the formula: ##STR1## wherein R.sup.2 is a group of the formula ##STR2## wherein R.sup.6 is a C.sub.1 -C.sub.4 alkyl group or a phenyl group and n is 0 or an integer up to 4, ##STR3## wherein X is as defined above, ##STR4## wherein X is as defined above, and/or ##STR5## and (d) from 0 to 80 equivalent % of an oxycarboxylic acid residue of the formula: ##STR6## wherein R.sup.3 is a bivalent aromatic hydrocarbon group or R.sup.4 --X--R.sup.5, wherein R.sup.4, R.sup.5 and X are as defined above, said polyester having a melt viscosity of at least 50 poise as measured at 275.degree. C. at 100 sec.sup.-1.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: August 15, 1989
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Osamu Kishiro, Atsushi Kasai, Seiichi Nozawa, Hiroshi Kamata
  • Phenolic-modified rosin ester printing inks
    Patent number: 4857624
    Abstract: Improved phenolic-modified rosin ester resins are disclosed. The phenolic-modified rosin ester resins comprise the reaction product of substantially unsaturated rosins with a dienophile, a phenolic compound and a formaldehyde-containing compound, which product is then esterified. The resulting composition is useful in vehicles for publication gravure printing inks, as well as in the printing inks themselves. Printing inks fabricated in accordance with the invention employing these improved phenolic-modified rosin ester resins provide prints of superior quality.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: August 15, 1989
    Assignee: BASF Corporation
    Inventors: Douglas S. DeBlasi, John P. Walsh
  • Hydroxyethylnorbornene compounds and a process for their preparation
    Patent number: 4855395
    Abstract: Novel hydroxyethylnorbornene esters are disclosed which are prepared by reacting cyclopentadienylethanol with an acrylate ester. Novel polyesters are disclosed which are prepared by the self-polymerization of the hydroxyethylnorborane (HEN) esters. Novel polyesters are also obtained by reacting HEN compounds and a diol or other polyol in the presence of diacids or their esters or anhydrides. The polyesters of the present invention are useful as tackifying agents, adhesives, coatings, and for other purposes.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: August 8, 1989
    Assignee: Eastman Kodak Company
    Inventors: Jerome L. Stavinoha, Anthony W. McCollum
  • Polyesters containing covalently bound quaternary phosphonium salts
    Patent number: 4855396
    Abstract: New polyesters are provided, having advantageous utility as dual function binder/charge agents in electrostatographic toner particles. The new polyesters contain a quaternary phosphonium salt comprising a cationic portion and an anionic portion, wherein the cationic portion comprises a phosphonium atom directly covalently bonded to at least one aryl moiety substituted with a group containing an ester linkage to the rest of the polyester, and wherein the anionic portion of the salt comprises an arylsulfonate moiety in which the aryl group is unsubstituted or is substituted with one or more alkyl, halide, or group having an ester linkage to the rest of the polyester.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: August 8, 1989
    Assignee: Eastman Kodak Company
    Inventors: John C. Wilson, Thomas A. Jadwin
  • Method of stimulating cashmere growth on cashmere-producing goats using melatonin
    Patent number: 4855313
    Abstract: The invention is a method of stimulating cashmere growth on cashmere-producing goats. The method includes administering melatonin by a sustained release delivery system.
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: August 8, 1989
    Inventors: Robert A. S. Welch, Keith Betteridge
  • Wholly aromatic thermotropic liquid crystal polyester
    Patent number: 4851503
    Abstract: A novel wholly aromatic thermotropic liquid crystal polyester consisting essentially of 4-oxybenzoyl unit, terephthaloyl unit, 4,4'-dioxydiphenyl unit and 4,4'-dioxydiphenyl ether unit has a relatively low transition temperature to liquid crystal as well as good flow characteristics, and has thereby good melt-formability. The polyester gives melt extruded fibers and melt extruded films having superior mechanical strengths and elastic moduli, and also gives injection-molded products having superior strengths, excellent thermal characteristics, elastic moduli and impact strengths.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: July 25, 1989
    Assignee: Kuraray Company, Ltd.
    Inventors: Mitsuo Matsumoto, Teruhisa Kaneda
  • Aromatic polyesters, polyesteramides, and compositions thereof
    Patent number: 4851497
    Abstract: An aromatic polyester consisting of 40-70 mol % of unit I derived from p-hydroxybenzoic acid, 1-8 mol % of unit II derived from m-hydroxybenzoic acid or isophthalic acid, 6-36 mol % of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic acid, respectively, and 10-40 mol % of unit V derived from a symmetrical dihydroxy compound can be melt molded at a temperature of up to 330.degree. C. into an article having improved mechanical and thermal properties. An aromatic polyesteramide consisting of components I to V and unit VI having an anilino group is also provided. A filled composition is obtained by blending the polyester or polyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide with a magnetic powder.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: July 25, 1989
    Assignee: Kawasaki Steel Corporation
    Inventors: Tadahiro Wakui, Kenji Yoshino, Masafumi Komatsu, Yumiko Kumazawa, Touru Yamagishi, Mitsuhiko Izumi
  • Water-based polyester coating compositions containing an alkylated amino resin and a water dispersible epoxy resin
    Patent number: 4847334
    Abstract: Coating compositions suitable for use as coatings or inks for metallic foils, such as aluminum foil, as well as for use on other materials, such as papers and plastics resin films, are disclosed. These compositions comprise a water dispersible polyester resin, an alkylated amino resin, a water dispersible epoxy resin and water. They may optionally include a pigment and other optional modifying ingredients. These compositions, being water-based, provide improved environmental compatibility and may be dried under relatively low temperatures without objectional ammonia residue odor.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: July 11, 1989
    Assignee: Reynolds Metals Company
    Inventor: Gerald L. Thompson
  • Rim polyurethane compositions containing internal mold release agents
    Patent number: 4847307
    Abstract: The present invention is directed to a process for the production of optionally cellular, polyurethane elastomer moldings or optionally cellular, rigid structural polyurethanes by reacting a reaction mixture containing(i) a polyisocyanate,(ii) a high molecular weight polymer having at least two hydroxy groups and having a molecular weight of 400 to about 10,000,(iii) about 5 to 50% by weight, based on the weight of component (ii) of a chain-extender having at least two hydroxy groups and(iv) about 0.05 to 10 weight percent, based on the weight of components (ii) and (iii) of a salt based on a carboxy functional siloxane and an amidine group-containing compound of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: July 11, 1989
    Assignee: Mobay Corporation
    Inventors: John E. Dewhurst, Stephen J. Harasin
  • Method for production of modified polyesters
    Patent number: 4845186
    Abstract: This invention relates to a method of producing a modified polyester having high fiber whiteness and satisfactory dyeability. In producing a polyester at least 80% of whose repeating structural units are ethylene terephthalate units, at least one specified polyalkylene glycol having a potassium and sodium content not more than 3 ppm and an average molecular weight not less than 400 is added for copolymerization. The method enables production of a polyester with a high degree of whiteness and, moreover, a polyester with excellent static-proofness and dyeability.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: July 4, 1989
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Noboru Chujo, Shigeo Mori
  • Polyester film coated with metal adhesion promoting coating and having superior winding performance
    Patent number: 4845189
    Abstract: An aqueous coating composition is provided for thermoplastic films comprising(i) from 1 to 10 weight percent, based upon the total weight of the coating composition, of a sulfonated copolyester consisting essentially of the polyester condensation product of the following monomers or their polyester-forming equivalents:(A) about 65 to 95 mole percent of isophthalic acid;(B) about 0 to 30 mole percent of at least one aliphatic dicarboxylic acid of the formula HOOC(CH.sub.2)--.sub.n COOH, wherein n ranges from about 1-11;(C) about 5 to about 15 mole percent of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus; and(D) stoichiometric quantities of about 100 mole percent of at least one copolymerizable aliphatic or cycloaliphatic alkylene glycol having about from 2 to 11 carbon atoms,(ii) from 0.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: July 4, 1989
    Assignee: Hoechst Celanese Corporation
    Inventors: David Rudd, Sandra W. Rice
  • Polyester resin compositions
    Patent number: 4841016
    Abstract: An additive composition for enhancing curing and color clarity properties of polyester resins. The additive comprises from about 50 to 75 parts by weight of a mercaptan, and from about 50 to about 25 parts by weight of a quaternary ammonium salt. From about 0.5 to about 25 parts by weight of a polymerization initiator can be incorporated into the additive when the polyester resin is utilized as a gel coat. Resinous compositions formulated with the additive consist essentially of from about 50 to about 99.5 parts by weight of a polyester resin, from about 0.5 to about 35 parts by weight of the mercaptan, from about 0.1 to about 15 parts by weight of the quaternary ammonium salt, and a minor effective amount of an oxidizing agent for the polyester resin.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: June 20, 1989
    Inventor: Bill R. Edwards
  • Developing composition and a sheet for pressure-sensitive copy paper
    Patent number: 4839457
    Abstract: A developing composition and a sheet for a pressure-sensitive copy paper comprising a phenolic resin as a main component which is obtained by condensating with formaldehyde using a p-substituted phenol with a 2,4-di-substituted and/or 2,6-di-substituted phenol, and zinc oxide which may be added thereto, as occasion demands.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: June 13, 1989
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Kazuhide Hayama, Yukio Saitoh
  • Process for the preparation of poly(ether-ketone) polymers
    Patent number: 4839459
    Abstract: Disclosed is an improved process for the preparation of poly(ether-ketone) polymers by the reaction of at least one dicarboxylic acid with certain bis(phenoxybenzoyl) compounds in the presence of a perfluoroalkylsulfonic acid and (1) an oxide of phosphorus and/or (2) a perhaloalkanoic anhydride.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: June 13, 1989
    Assignee: Eastman Kodak Company
    Inventors: W. Ronald Darnell, Winston J. Jackson, Jr.
  • Novel polymers from aminated polyethers and formaldehyde
    Patent number: 4839460
    Abstract: A process for the preparation of novel polymers comprises reacting a primary polyether polyamine of the formulaA(E.sub.p NH.sub.2).sub.m,wherein A is the residue of a polyether initiator having m initiator groups, E is an ether moiety from an oxirane compound, p is 5-90 and m is 2-8; with an aqueous solution of formaldehyde or with paraformaldehyde in the absence of a diluent.
    Type: Grant
    Filed: February 25, 1988
    Date of Patent: June 13, 1989
    Assignee: The Dow Chemical Company
    Inventor: David C. Molzahn