Polymer Derived From Ethylenic Reactants Only Derived From Reactant Containing A -cooh Group Patents (Class 525/119)
  • Patent number: 4390688
    Abstract: A water dilutable polyester having a good resistance to hydrolysis based on(A) at least one dicarboxylic acid unit,(B) at least one polycarboxylic monoanhydride and(C) at least one alcohol component containing at least dihydric alcohol,the COOH groups of the polyester being at least partially present in the form of salts with amine, characterized in that the polyester is also derived from(D) at least one epoxy compound which contains at least two oxiran rings and is selected from the group consisting of epoxidized fatty acids, derivatives thereof and epoxidized aliphatic hydrocarbons or mixtures thereof with up to 30% of monoepoxides, the percentage being based on the epoxy groups, and in that the polycarboxylic monoanhydride (B) is incorporated in the form of a half ester and is other than phthalic anhydride and maleic anhydride.The invention also relates to a process for the preparation of such polyester, its use in a coating composition and to articles coated with such coating compositions.
    Type: Grant
    Filed: March 12, 1982
    Date of Patent: June 28, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerd Walz, Thaddaus Wirth, Walter Sprenger
  • Patent number: 4385139
    Abstract: A synthetic resin composition is prepared by mixing various polymers which differ, above all, in their second order transition temperature; the composition can also contain a filler, an epoxide resin and an alcoholate. The composition is preferably obtained in the form of granules, the particle diameter being within the range from 1 to 10 mm. It is used as a starting material for the production of vibration-damping sheets.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: May 24, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Manfred Kuchler, Gunther Duve, Joachim Ebigt
  • Patent number: 4376844
    Abstract: Resin-forming polyepoxides are mixed with polyoxazolidinyl compounds or polymers containing pendant oxazolidinyl groups in which the carbon atom in the 2-position of the heterocyclic ring is substituted with saturated hydrocarbon groups, such as dialkyl, or with an alkylene group forming a saturated ring with the carbon atom in the 2-position of the oxazolidinyl ring to form, in the absence of water, a stable composition which can be stored in closed containers for months without undergoing gelation. When such compositions are spread into films and the films exposed to moisture at ambient temperature, e.g., to ambient air having a relative humidity of at least 20% and temperature of about 15.degree. to 25.degree. C., the polymer serves to react with and cure the polyepoxide.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: March 15, 1983
    Assignee: Rohm and Haas Company
    Inventors: William D. Emmons, Wayne E. Feely
  • Patent number: 4374875
    Abstract: Water-borne thermoplastic polyhydroxyether resins are prepared by grafting carboxyl-containing vinyl monomers onto phenoxy resins with a free radical initiator and then converting the graft copolymer to an ionomer suitable for use as protective coatings for metals.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: February 22, 1983
    Assignee: Union Carbide Corporation
    Inventor: You-Ling Fan
  • Patent number: 4365043
    Abstract: A process for preparing resinous particles for a coating composition, which comprises the steps of (1) subjecting an aqueous resin composition having an ionic group and no material solubility or dispersibility in water is dissolved or dispersed in an aqueous medium by at least partly neutralizing the ionic group to treatment with a powdering agent while applying thereto an operation for pulverization to deposit the resin in a particulate form and (2) recovering the deposited resinous particles from the aqueous medium.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: December 21, 1982
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Sakuichi Konishi, Yukio Omori, Hiroyoshi Kataoka
  • Patent number: 4357455
    Abstract: Process for preparing copolymers soluble in organic solvents and containing hydroxyl groups, by the polymerization and esterification of (a) at least one .alpha.,.beta.-olefinically unsaturated carboxylic acid with (b) at least one olefinically unsaturated copolymerizable monomer and (c) at least one epoxy group-containing compound, at an elevated temperature, in the presence of a polymerization catalyst and, advantageously, a polymerization modifier, characterized in that glycidol, ##STR1## is used as component (c), either alone or in admixture with one or more glycidyl esters with 12 to 19 carbon atoms and derived from saturated fatty acids, the number of epoxy groups being at least equivalent to the number of carboxyl groups, and in mixtures of glycidol with glycidyl esters, the number of equivalents of glycidyl esters is at most twice as great as the number of equivalents of glycidol.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: November 2, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Josef Mondt, Helmut Rinno
  • Patent number: 4351922
    Abstract: A highly water-absorbing but less water-soluble hydrogel is produced by polymerizing at least one hydrophilic ethylenically unsaturated monomer, e.g., ethylenically unsaturated carboxylic acid, ethylenically unsaturated sulfonic acid, or derivatives thereof, in the presence of a specific difunctional compound, e.g., polyethyleneglycol diglycidyl ether, polyethyleneglycol diacrylate, etc.
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: September 28, 1982
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Tooru Yoshida, Seigo Iwagami, Takashi Ueshima, Yoshikazu Hosoda
  • Patent number: 4335829
    Abstract: An aqueous resinous dispersion and a method of coating employing the aqueous resinous dispersion are disclosed. The aqueous resinous dispersions are solubilized with base and comprise an acrylic polymer containing N-ethoxymethylacrylamide or methacrylamide moieties and an epoxy resin. The dispersion is useful for coating metal containers particularly as a coating for the interior of containers which are used for alcoholic beverages, for example, beer cans.
    Type: Grant
    Filed: November 29, 1978
    Date of Patent: June 22, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Roger M. Christenson, Rudolf Maska, Rostyslaw Dowbenko, Thomas R. Hockswender
  • Patent number: 4332713
    Abstract: A liquid or pasty thermosetting adhesive which can be pre-gelled, which is suitable for the bonding of moulded parts or for the sealing of folded seams, and which contains (a) a liquid epoxide resin having on average more than one epoxide group in the molecule, and (b) a latent epoxide curing agent insoluble in the epoxide resin, the adhesive being characterized in that it also contains (c) in an amount of 5 to 50 percent by weight relative to the epoxide resin, at least one halogen-free thermoplast in powder form, which is insoluble in the epoxide resin at room temperature, and which has a softening point of between 60.degree. and 160.degree. C., such as a polyethylene, a polypropylene or an ethylene/acrylic acid/acrylate terpolymer.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: June 1, 1982
    Assignee: Ciba-Geigy Corporation
    Inventor: Hans Lehmann
  • Patent number: 4305994
    Abstract: In a process for forming a multilayer coated film which comprises coating a multilayer coat-forming paint on the surface of a substrate to form a multilayer coated film thereon, the improvement wherein prior to the coating, the surface of the substrate is treated with a solution containing at least one onium compound selected from compounds of formulae (I) and (II) below ##STR1## wherein Y represents a nitrogen, phosphorus or arsenic atom, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical or different and each represents a hydrogen atom or an organic group having not more than 8 carbon atoms, and X.sub..crclbar. represents an anion.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: December 15, 1981
    Assignee: Kansai Paint Co., Ltd.
    Inventor: Heihachi Murase
  • Patent number: 4302373
    Abstract: Water-borne reaction products of (a) carboxylfunctional polymers; (b) modified polyepoxides; and (c) tertiary amines are useful as film-forming components of coating compositions which can be spray-, flow-, dip-, roller-, or electro-coated. The coating compositions are useful as such or can be crosslinked with crosslinking agents such as a nitrogen resin and, when coated on metal and paper substrates, they provide coatings of improved properties, including a high degree of flexibility during machining and stamping of the coated articles, corrosion resistance, gloss, hydrolytic stability, and nonadulterating of foods and beverages in contact therewith.
    Type: Grant
    Filed: August 5, 1980
    Date of Patent: November 24, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William H. Steinmetz
  • Patent number: 4285849
    Abstract: Ungelled amidation reaction products of a polycarboxyl-containing material and a polyamine having at least one ether group are produced. The ungelled products can be mixed with a crosslinking resin to provide a coating composition having good durability and stain-resistance.
    Type: Grant
    Filed: November 27, 1979
    Date of Patent: August 25, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Karl F. Schimmel, Jerome A. Seiner
  • Patent number: 4255553
    Abstract: A powder coating composition comprising:(a) a compound having at least two epoxy groups in the molecule;(b) a compound having at least two carboxyl groups in the molecule; and(c) a compound of the formula: ##STR1## wherein m and n are each an integer of 1-10.sup.5 provided that m.ltoreq.n; R.sub.1 is a residue of a mono or polybasic carboxylic acid; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are, the same or different, each an unsubstituted or substituted C.sub.1-30 alkyl, C.sub.6-10 cycloalkylalkyl, C.sub.5-8 cycloalkyl, C.sub.6-20 aryl or C.sub.7-30 aralkyl or at least two of them many form together with nitrogen atom a saturated or unsaturated heterocyclic group, said composition being able to be thermoset at low temperature and form a paint film having excellent surface smoothness without browning of the film.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: March 10, 1981
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yutaka Mizumura, Iori Naito, Hideo Miyake
  • Patent number: 4255530
    Abstract: A binder composition which comprises (A) from 99 to 50% by weight of copolymer consisting of copolymerized units of (a) from 5 to 90% by weight of at least one aliphatic (meth)acrylate containing from 1 to 8 carbon atoms in the alcohol moiety; (b) from 0 to 60% by weight of at least one aromatic vinyl or isopropylene compound containing from 8 to 14 carbon atoms; (c) from 1 to 40% by weight of at least one comonomer selected from (I) at least one mono (meth)acrylate of an alcohol containing from 2 to 8 carbon atoms and having from 2 to 4 hydroxyl groups; and/or (II) at least one maleic acid semi-ester corresponding to the following general formula ##STR1## wherein R.sub.1 represents hydrogen or methyl; and R.sub.2 represents hydrogen, methyl, ethyl, propyl, i-propyl or phenyl; and (d) from 0 to 60% by weight of at least one other olefinically unsaturated comonomer; and (B) from 1 to 50% by weight of a saturated lactam.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: March 10, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Hohlein, Jochen Schoeps
  • Patent number: 4255299
    Abstract: A polymer containing perfluoroalkyl group in its side chain which is an addition reaction product of a polymer having the following general formula: ##STR1## wherein R is phenyl group or alkoxyl group having 1 to 12 carbon atoms, R.sup.1 is alkyl group having 1 to 12 carbon atoms, and n is an integer of 10 to 2,000, with an epoxy compound selected from the group consisting of ##STR2## wherein R.sub.f is perfluoroalkyl group having 3 to 20 carbon atoms and R.sup.2 is alkyl group having 1 to 12 carbon atoms, the addition reaction product containing 0.1 to 50% by mole of the group derived from the epoxy compound having the formulae (IIa) to (IIc) per 1 mole of the recurring unit of the polymer having the formula (I). The polymer is good in compatibility with film-forming resins and solvents and improves the leveling property of a coating composition when incorporated thereinto and the surface smoothness of the film obtained from the composition.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: March 10, 1981
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Shigeo Daimon, Kazuo Okamura
  • Patent number: 4255311
    Abstract: A storage-stable, formaldehyde-free composition containing a water-soluble epoxide resin, an acrylic copolymer and an aliphatic polyamine or alkanolamine. This composition is used for the treatment of textile material containing hydroxyl groups and imparts to the fabrics a high resistance to creasing.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: March 10, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Sameer H. Eldin, Hanspeter Gysin
  • Patent number: 4251415
    Abstract: A paint composition for cationic electrodeposition process comprises a producing step in which a polymer of conjugated diene having carboxyl group at molecular terminal position or a copolymer of the said conjugated diene and vinyl monomer is made to react with an epoxy resin by a type of condensate of bisphenol A - epichlorohydrin and further, the resulting reaction compound is made to react with a primary amine compound or a secondary amine compound and thereby a reaction compound (component 1) is obtained and furthermore, the said reaction compound (component 1) is made to react with a partial block isocyanate compound (component 2) and this final reaction compound is used for an ingredient of the paint composition as a film forming material.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: February 17, 1981
    Assignee: Nippon Soda Company Limited
    Inventors: Hisao Nakada, Michisuke Harada, Seiji Yoshikoshi
  • Patent number: 4246319
    Abstract: A coating composition for polyolefinic films, especially polypropylene films, which consists essentially of a solution of a three-component polymeric system comprising:(a) about 50 to 80% of saturated polyesters, unsaturated polyesters or mixtures thereof(b) polymers and copolymers of acrylic esters; and(c) epoxy resins, the ratio of each of components (b) and (c) being from about 1 to 49% and being selected as to make up the total percentage of the polymeric system.The coated products and the coating process are also covered.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: January 20, 1981
    Assignee: Frypan S.p.A.
    Inventor: Donato Jacobone
  • Patent number: 4246368
    Abstract: A powder coating composition for forming multi layer coatings comprising:(1) at least one of finely divided thermosetting addition copolymers having a glass transition temperature of 35.degree. to 75.degree. C. and comprising as comonomers a wt. % of a hardness imparting monomer and b wt. % of a softness imparting monomer based on the copolymer wherein a+b.ltoreq.60, b.ltoreq.a and b.ltoreq.20, and(2) at least one of finely divided thermosetting resinous materials having incompatibility or low compatibility with the copolymer and a substantially greater surface tension than the copolymer when melted at the same temperature and substantially differing from the copolymer in composite parameter.
    Type: Grant
    Filed: May 5, 1978
    Date of Patent: January 20, 1981
    Assignee: Kansai Paint Company, Limited
    Inventor: Heihachi Murase
  • Patent number: 4240938
    Abstract: A water-soluble reactive binder, characterized by a combination of at least three of the components(a) at least one halogen-free polycarboxylic acid compound;(b) at least one salt-forming substance selected from the group consisting of alkali metal, alkaline earth metal and quaternary ammonium salts, organic bases and ammonia;(c) at least one component selected from the group consisting of(c1) a polymer containing OH groups; and(c2) an epoxide compound,wherein the components (a) to (c2) are present as such or at least partially in chemically bonded form, a process for its preparation, an article coated with said binder and an adhesive containing said binder.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: December 23, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Kurt Kraft, Gerd Walz, Thaddaus Wirth, Ernst-August Theiling
  • Patent number: 4237242
    Abstract: This application discloses a composition and a method for catalyzing and crosslinking of a polyepoxy compound and an acrylic resin containing carboxylic acid groups, the catalyst being in the form of a metal chelate, particularly of manganese, zinc or chromium. The compositions, when substantially freed of volatile solvent and adjusted to a viscosity resembling that of gunnable caulking compositions, are particularly well adapted as a replacement for the metallic body solder used in automobile manufacture to fill out imperfections, welded joints and the like, when applied thereto and cured.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Rohm and Haas Company
    Inventor: Lawrence S. Frankel
  • Patent number: 4225480
    Abstract: Amine group-containing addition interpolymers having improved stability under conditions of storage and use are prepared by interpolymerizing at least one polymerizable ethylenically unsaturated carboxylic acid monomer and at least one polymerizable ethylenically unsaturated aminolysis-resistant organic monomer to form an addition interpolymer containing carboxyl groups pendent to the polymer chain and aminolysis-resistant organic groups pendent to the polymer chain, following which a portion of the pendent carboxyl groups of the addition interpolymer are reacted with an alkylenimine to form pendent amine groups and a portion of the pendent carboxyl groups of the addition interpolymer are neutralized with a basic compound to form pendent anionic salt groups. The addition interpolymer is preferably reducible with organic solvents, water or a mixture thereof, and can be utilized as pigment grinding vehicles or they can be formulated with conventional additives to form useful coating compositions.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: September 30, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Roger M. Christenson, Jerome A. Seiner, James A. Claar
  • Patent number: 4221688
    Abstract: A silicone emulsion having a dispersed phase of an anionically stabilized hydroxylated polydiorganosiloxane and a colloidal silica and a continuous phase of water in which the pH is 9 to 11.5 provides an elastomeric product, such as a film or coating, upon removal of the water at ambient conditions. The silicone emulsion can be prepared by adding the colloidal silica to the hydroxylated polydiorganosiloxane in an emulsified state and thereafter adjusting the pH within the range of 9 to 11.5 inclusive with such materials as an organic amine or sodium hydroxide. These emulsions are stable during storage over extended periods of time and will provide elastomeric products. A silicone emulsion can also be prepared as described except the pH is adjusted above 11.5.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: September 9, 1980
    Assignee: Dow Corning Corporation
    Inventors: Robert D. Johnson, John C. Saam, Christine M. Schmidt
  • Patent number: 4221885
    Abstract: Amine group-containing addition interpolymers having improved stability under conditions of storage and use are prepared by interpolymerizing at least one polymerizable ethylenically unsaturated carboxylic acid monomer and at least one polymerizable ethylenically unsaturated aminolysis-resistant organic monomer to form an addition interpolymer containing carboxyl groups pendent to the polymer chain and aminolysis-resistant organic groups pendent to the polymer chain, following which a portion of the pendent carboxyl groups of the addition interpolymer are reacted with an alkylenimine to form pendent amine groups and a portion of the pendent carboxyl groups of the addition interpolymer are neutralized with a basic compound to form pendent anionic salt groups.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: September 9, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Karl F. Schimmel, Roger M. Christenson, Jerome A. Seiner, James A. Claar
  • Patent number: 4199646
    Abstract: A heat-activatable, pressure-sensitive adhesive tape or sheet in which the pressure-sensitive, bonding function arises on heating, which comprises a backing material having thereon a layer of a heat-activatable, pressure-sensitve adhesive having an apparent modulus of elasticity of about 10 to 300 kg/cm.sup.2 at normal temperature, the adhesive comprising a mixture of(a) 100 parts by weight of a copolymer of (i) an alkyl acrylate ester or an alkyl methacrylate ester and (ii) a polymerizable monomer having a functional group, and(b) about 50 to 200 parts by weight of a reactive hot-melt resin that is miscible with the copolymer (a), has a melting point of about 60.degree. C. or higher, and has at least one functional group capable of reacting with the functional group of the copolymer (a), either directly or through a crosslinking agent.
    Type: Grant
    Filed: August 9, 1978
    Date of Patent: April 22, 1980
    Assignee: Nitto Electric Industrial Co., Ltd.
    Inventors: Yutaka Hori, Makoto Sunagawa, Naoki Matsuoka
  • Patent number: 4192929
    Abstract: Electrodepositable resins that do not require chromate corrosion inhibiting pigments and comprise (A) the at least partially neutralized reaction product of (1) an epoxy reactant having about two or more epoxy groups that are not linked by carboxy-ester moieties and (2) an amine reactant selected from mono and diamines containing primary or secondary amino groups and also being at least about 50 mole percent hydroxy amine, (B) water soluble or dispersible amino resin crosslinking agent are improved by incorporation of (C) a co-reactive flow control agent that comprises, for example, a polyepoxy copolymer having a molecular weight desirably between 1000-20,000. The co-reactive flow control agent, used at low levels, allows formation of smooth, non-tacky films exhibiting desirable corrosion resistant properties.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: March 11, 1980
    Assignee: Ford Motor Company
    Inventor: Robert C. Wingfield, Jr.
  • Patent number: 4181643
    Abstract: The invention relates to the manufacture of crystalline epoxide resins which have at least two crystallite melt temperatures. The cause of the crystallites are molecule blocks which are derived from aliphatic polyesterpolycarboxylic acids. According to the invention, at least two aliphatic polyester-polycarboxylic acids (D and E), which bear a special relation to each other in respect of the number of --CH.sub.2 groups in the primary chain member, are reacted under very specific quantitative conditions with epoxide compounds which contain at least 2 epoxide groups and optionally with curing agents. The synthetic resins thereby obtained are particularly suitable for use as storage material in latent heat accumulators.
    Type: Grant
    Filed: April 14, 1978
    Date of Patent: January 1, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Ursula Kreibich, Rolf Schmid
  • Patent number: 4180527
    Abstract: The invention relates to the manufacture of crystalline epoxide resins which exhibit a marked crystallite melt temperature. The formation of the crystallites is caused by molecule blocks which are derived from aliphatic polyester-polycarboxylic acids. According to the invention, two aliphatic polyester-polycarboxylic acids (A and B) are reacted under very specific quantitative conditions with epoxide compounds which contain at least 2 epoxide groups and optionally with curing agents. The polyester-polycarboxylic acids A are purely n-aliphatic in character, whereas the polyester-polycarboxylic acids B are not. They contain, for example, neopentyl radicals which are derived from neopentyl alcohol during the ester formation. These crystalline synthetic resins are particularly suitable for use as material for absorbing solar energy in solar energy collectors.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: December 25, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Schmid, Ursula Kreibich
  • Patent number: 4172177
    Abstract: A water-insoluble hydrophilic polymer composition capable of crosslinking at ambient temperature. The composition contains (A) a water-insoluble hydrophilic copolymer prepared by copolymerizing (a) at least one carboxyl group containing ethylenically unsaturated monomer selected from acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, itaconic acid and citraconic acid, (b) at least one amino group containing ethylenically unsaturated monomer of the formula: ##STR1## where R.sub.1 -R.sub.4 are specifically defined, and (c) an ethylenically unsaturated monomer selected from (i) a monomer of the formula: ##STR2## (R.sub.6 being alkyl), (II) A MONOMER OF THE FORMULA: ##STR3## and (iii) diacetone acrylamide, and (B) a polyepoxide crosslinking agent having at least two terminal epoxy groups. The water absorption rate of the polymer can be adjusted over a wide range and has sufficient coating strength and bonding strength to withstand long periods of immersion in water.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: October 23, 1979
    Assignee: Kyowa Gas Chemical Industry Co., Ltd.
    Inventor: Bunya Sato
  • Patent number: 4160757
    Abstract: An adhesive composition which shows improved stickiness and adhesive property at room temperature and exhibits an excellent adhering ability in a short time is prepared by compounding(a) an acrylonitrile-containing copolymer having carbon-to-carbon double bond(b) a phenol-polysulfide resin(c) a metal oxide, and(d) a polyfunctional electrophilic reactive compound containing at least two electrophilic reactive groups.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: July 10, 1979
    Assignee: Bridgestone Tire Co., Ltd.
    Inventors: Toshio Honda, Yukio Fukuura, Shoji Tanaka, Itsuo Tanuma, Yoshikatsu Suzuki, Hikaru Ishikawa
  • Patent number: 4160178
    Abstract: Resins, made by admixing polyacrylic resin and epoxy resin in a weight ratio of polyacrylic:epoxy of 10:0.1 to 100 are cured in a diffusion gas atmosphere. An insulated conductor is coated with the polyacrylic-epoxy resin and cured without heat in a contacting gas atmosphere, such as nitrogen, carbon dioxide, argon, helium, methane, or hydrogen.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: July 3, 1979
    Assignee: Westinghouse Electric Corp.
    Inventors: James D. B. Smith, Robert N. Kauffman
  • Patent number: RE31310
    Abstract: Vinyl ester resins with improved impact resistance and other benefits and advantages may be obtained by a process modification wherein up to 20 percent of the unsaturated monocarboxylic acid, which is reacted with a polyepoxide, is replaced by an equivalent amount of a liquid carboxy terminated polydiene rubber capable of reacting with epoxy groups to form a chemically bound molecule. .Iadd.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: July 12, 1983
    Assignee: The Dow Chemical Company
    Inventor: Daniel J. Najvar