Patents Examined by H. S. Cockeram
  • Patent number: 4482651
    Abstract: Haloalkoxymethylmelamine adduct is prepared by reacting hexamethoxymethylmelamine with a halogenated alcohol. Dispersions of this adduct in a polyol produce a polyurethane product which displays improved flame retardancy.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: November 13, 1984
    Assignee: BASF Wyandotte Corporation
    Inventors: Curtis J. Reichel, John T. Patton, Jr., Thirumurti Narayan
  • Patent number: 4469831
    Abstract: The object of this invention is a moisture-curing, storage stable, single-component polyurethane system comprising:A. a polyurethane prepolymer with a free isocyanate content of 1 to 5 percent by weight;B. a dialdimine having the formulaR[--N.dbd.CH--C(CH.sub.3).sub.2 --CH.sub.2 --O--CO--CH--(CH.sub.3).sub.2 ].sub.2in whichR is a divalent aliphatic radical with 2 to 10 carbon atoms, aliphatic radical having 4 to 10 carbon atoms and containing ether oxygen and/or lower alkylamino nitrogen atoms, cycloaliphatic radical with 6 to 15 carbon atoms oraromatic radical with 6 to 21 carbon atoms;andC. an acid catalyst selected from the group consisting of aliphatic carboxylic acids, aromatic carboxylic acids, toluenesulfonic acid, and mixtures thereof.The polyurethane systems are used as coating, sealing, casting, spackling and bonding materials.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: September 4, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Bueltjer, Heinrich Horacek, Wolfgang Druschke, Gernot Franzmann, Erhard Klahr, Hans-Juergen Foerster
  • Patent number: 4469821
    Abstract: Compositions having improved compatibility of halohydrocarbon blowing agents such as trichlorofluoromethane and suitable for curing with polyisocyanates to give low smoke urethane isocyanate foams are described. The compositions include the transesterification products of the residue obtained from the manufacture of dimethyl terephthalate and ethylene glycol or a polyethylene glycol; the transesterification product of that residue and a higher alkylene glycol or higher polyalkylene glycol; and a polyether polyol having an average hydroxyl functionality of at least 4.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: September 4, 1984
    Assignee: Mobil Oil Corporation
    Inventor: James J. Anderson
  • Patent number: 4469835
    Abstract: A connector member (11) is disclosed for sealed connection with a second connector member (30), to permit sealed flow of material through the joined connector members. The connector member (11) is made of a material selected from the group consisting of aliphatic hydrocarbon resins, aliphatic polyester resins, copolymers of olefins and vinyl acetate, and olefin-acrylate copolymers. The material also contains an effective amount of an antioxidant agent being selected to provide to the material the characteristic of permitting transmission of at least 15 percent of at least one wavelength of ultraviolet radiation having a wavelength between 220 and 300 nanometers through a thickness of 0.003 inch of the material.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: September 4, 1984
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Dean G. Laurin
  • Patent number: 4466903
    Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: August 21, 1984
    Assignee: PPG Industries, Inc.
    Inventor: Steven E. Pamer
  • Patent number: 4467014
    Abstract: A polyisocyanurate coating composition, which composition comprises and is prepared by reaching 100 parts of a methylene diisocyanate, having an average functionality of less than about 2.4, with a mixture of a di or triethylene glycol and a methoxy polyethylene glycol, the reaction carried out in the presence of a trimerization catalyst, and to a polyisocyanurate-coated, rigid-foam insulation board coated with such composition.
    Type: Grant
    Filed: April 6, 1983
    Date of Patent: August 21, 1984
    Assignee: Thermocell Development, Ltd.
    Inventor: Stuart B. Smith
  • Patent number: 4464490
    Abstract: Amino and amido dialkyltin dicarboxylates and stannoxy carboxylates are prepared by first reacting an amine or amino alcohol with a dicarboxylic acid anhydride, followed by reaction of the resulting product with a dialkyltin oxide. The obtained compounds are useful as catalysts for promoting reaction of organic isocyanates with organic compounds having one or more active hydrogen-containing groups.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: August 7, 1984
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ibrahim S. Bechara, Rocco L. Mascioli
  • Patent number: 4464488
    Abstract: The alkylene oxide adduct of bis(aminoethyl)ether may be reacted with formaldehyde in the presence of hydrogen and a hydrogenation-dehydration catalyst to produce compounds of the formula ##STR1## where R is hydrogen or lower alkyl of 1 to 4 carbon atoms and R" is methyl or ##STR2## where R is as above. Monocarboxylic acid salts of these compounds show unexpectedly high efficiency as polyurethane catalysts. Smaller amounts of this amine are required to produce foams having the same reaction profile as foams made with prior art amine salt catalysts.
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: August 7, 1984
    Assignee: Texaco Inc.
    Inventors: Robert L. Zimmerman, Bruce W. Peterson
  • Patent number: 4463115
    Abstract: A pressure sensitive adhesive composition comprising (A) a polyether having at least one silicon-containing hydrolyzable group, having an average molecular weight of 300 to 30,000 and having a principal chain which is essentially constructed with the chemically bonded recurring units:--R.sup.1 --O--wherein R.sup.1 is a divalent alkylene group and (B) a tackifier; said tackifier being admixed with the polyether in an amount of 10 to 140 parts by weight per 100 parts by weight of said polyether. From the composition a pressure sensitive adhesive product having good adhesive properties can be prepared substantially without a solvent.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: July 31, 1984
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Toshifumi Hirose, Katsuhiko Isayama
  • Patent number: 4461810
    Abstract: A pigment of TiO.sub.2 particles coated with alumina, whose particle surfaces have associated with them cerium cations and sulfate-, phosphate or silicate anions, can be used to prepare paper laminates having a high degree of lightfastness.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: July 24, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard W. Jacobson
  • Patent number: 4460715
    Abstract: A stable copolymer dispersion is prepared by addition copolymerization of (1) a monomeric adduct of an active hydrogen compound, e.g., a polyether polyol, and an acrylyl compound such as methacryloyl chloride with (2) ethylenically unsaturated monomer(s), e.g., styrene or a mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound such as a polyether polyol. The molar ratio of acrylyl moiety to active hydrogen compound is less than 0.1:1. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: July 17, 1984
    Assignee: The Dow Chemical Company
    Inventors: Dwight K. Hoffman, Robert F. Harris, Nancy B. Tefertiller, Randall C. Rains
  • Patent number: 4460655
    Abstract: A pigment of TiO.sub.2 particles coated with alumina and having associated therewith fluoride ions or fluoride compounds, can be used to prepare paper laminates having a high degree of lightfastness.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: July 17, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard W. Jacobson
  • Patent number: 4459129
    Abstract: A water dispersible hot melt size for sizing yarn is disclosed. The hot melt size comprises a combination of an alkenyl succinic anhydride, a non-blocking agent, a tackifying resin, a water-soluble polymer, and an ethylene-acidic monomer copolymer. The hot melt size may optionally contain a carboxylic acid and an antioxidant.
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: July 10, 1984
    Assignee: Borden, Inc.
    Inventors: Leon B. Gooding, Orville E. Brown
  • Patent number: 4458061
    Abstract: Novel monomers of the structure: ##STR1## wherein each R, which may be the same or different, is an alkyl group containing 1 to 3 carbon atoms; each R', which may be the same or different, is hydrogen or methyl, at least two R' are hydrogen; and x and y are independently 0, 1 or 2, are made and used to produce polyurethanes, polyureas and other useful polymers.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 3, 1984
    Assignee: The Dow Chemical Company
    Inventor: David W. Hughes
  • Patent number: 4456709
    Abstract: The present invention is directed to polyisocyanate mixtures which are liquid and stable in storage at room temperature and which have an NCO-content of from 36.5 to 45% by weight, consisting essentially of a mixture of from 25 to 70 parts by weight of partly trimerized 2,4-diisocyanatotoluene with from 30 to 75 parts by weight of unmodified 2,4-and/or 2,6-diisocyanatotoluene, a process for the production of these mixtures by mixing the individual components and the use of the mixtures as a synthesis component in the production of polyurethane plastics by the isocyanate-polyaddition process.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: June 26, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Roland Richter, Hans Hettel, Hanns P. Muller
  • Patent number: 4454252
    Abstract: Processes for sealing and strengthening water-bearing geological formations by injection thereinto a polyurethane-resin-forming composition that is especially suitable for this purpose which comprises a conventional polyisocyanate, a conventional polyol, an accelerator for the reaction between the polyisocyanate and the polyol, and a foam stabilizer.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: June 12, 1984
    Assignee: Bergwerksverband GmbH
    Inventor: Frank Meyer
  • Patent number: 4454254
    Abstract: Aminoplast resin is prepared by reacting urea or melamine with formaldehyde in the presence of a stabilizer compound. Dispersions of the resin in a polyol reacted with a polyisocyanate produce polyurethane products having low flammability properties.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: June 12, 1984
    Assignee: BASF Wyandotte Corporation
    Inventors: Curtis J. Reichel, John T. Patton, Jr., Thirumurti Narayan
  • Patent number: 4454309
    Abstract: Polyurethane polyene compositions are obtained by reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane resin. The resulting products will swell and increase in weight upon immersion in water and are permeable to gases, moisture vapor ions, and other low molecular weight species. The hydrophilic polyurethane diacrylate compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory.
    Type: Grant
    Filed: October 8, 1982
    Date of Patent: June 12, 1984
    Assignee: Tyndale Plains-Hunter, Ltd.
    Inventors: Francis E. Gould, Christian W. Johnston
  • Patent number: 4454257
    Abstract: Cured resins having excellent thermal and abrasion resistance and improved processability are provided by the addition polymerization of a compound having isocyanurate moieties, imide and/or amic acid moieties and ethylenically unsaturated moieties. An example of such a compound is the reaction product of an unsaturated cyclic anhydride such as maleic anhydride, an organic polyisocyanate such as a polymeric methylene phenyl polyisocyanate and water.
    Type: Grant
    Filed: April 6, 1983
    Date of Patent: June 12, 1984
    Assignee: The Dow Chemical Company
    Inventors: Frederick J. Dechow, William G. Stobby
  • Patent number: RE31703
    Abstract: A process is disclosed for the preparation of liquid, storage-stable, polyisocyanate compositions containing a release agent formed in situ which compositions are useful, for example, as binder resins in the formation of particle boards which latter, because of the presence of the release agent, show no tendency to adhere to the face of metal platens used in their formation. The process comprises heating an organic polyisocyanate (polymethylene polyphenyl polyisocyanate preferred) with an acid phosphate (e.g. a mixture of mono- and di-alkyl acid phosphates) under conditions controlled as to time and temperature so as to yield a product which is storage stable and shows no tendency to deposit solid or to separate into two liquid phases.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: October 9, 1984
    Assignee: The Upjohn Company
    Inventors: Richard A. Prather, David L. Williams, Robert M. Partin, Warren J. Rabourn, deceased