Patents Examined by Edward M. Woodberry
  • Patent number: 4136068
    Abstract: A water dispersable coating composition usable for metallic coat and consisting mainly of the following three componentsA. a water dispersable cellulose graft polymer obtained by graft polymerizing styrene, ethylenically unsaturated carboxylic acid and the other copolymerizable vinyl monomer to a reaction product of a cellulose ester derivative having 1-20% by weight of free hydroxyl group with maleic anhydride,B. a water dispersable acrylic copolymer consisting of ethylenically unsaturated monomer having hydroxyl group, ethylenically unsaturated carboxylic acid and the other copolymerizable vinyl monomer, andC. amino resin.
    Type: Grant
    Filed: August 11, 1977
    Date of Patent: January 23, 1979
    Assignee: Nippon Oil and Fats Company, Limited
    Inventors: Yukio Nomura, Osamu Nagura, Hiromasa Masuda
  • Patent number: 4134933
    Abstract: A phenol/formaldehyde condensation product of a 4,4'-thio-bis-(dialkylphenol) and formaldehyde having a molecular weight of 1,000 to 4,000; a process for preparing such a condensation product by contacting 4,4'-thio-bis-(dialkylphenol) and a source of formaldehyde in the presence of a protonic acid catalyst; and the use of such a condensation product as an antioxidant in an olefin polymer or copolymer composition.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: January 16, 1979
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Hans Feichtinger, Siegfried Lutze, Hans-Walter Birnkraut, Werner Kluy
  • Patent number: 4134862
    Abstract: Wet soil containing up to about 40% by wet weight of water is stabilized into a relatively dry, compactable soil mass for use as backfill in excavations by admixing lime and an alkali metal salt of a starch-polyacrylonitrile or starch-polymethacrylonitrile graft copolymer with the soil, allowing the resulting admixture to stand for a short period of time to produce a relatively dry, compactable soil mass, and thereafter using the soil mass as backfill. The aforementioned graft copolymer can also be used as backfill around electrically conductive, grounding members by combining the graft copolymer with a binder or relatively water impervious material, such as a bentonite clay, and interposing the clay/graft coploymer mixture between the grounding member and the surrounding soil.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: January 16, 1979
    Assignee: Construction Aids Technology, Inc.
    Inventors: Donald A. Eden, William H. Griffin
  • Patent number: 4134863
    Abstract: Absorbent compositions comprising graft copolymers of acrylonitrile and starch, or related polyhydroxy polymers, are prepared by improved methods of synthesis. Mixing the acrylonitrile with selected water-soluble acrylic comonomers enables unexpected improvements including reduction of the saponification time, total elimination of the base-saponification step, elimination of the starch gelatinization step, preparation of products which absorb large amounts of aqueous fluids under highly acidic conditions, and preparation of products which absorb over 5000 times their weight of deionized water.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: January 16, 1979
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: George F. Fanta, Edward I. Stout, William M. Doane
  • Patent number: 4132685
    Abstract: There is provided an improved thermoplastic hot-melt composition for use in encapsulating a workpiece, e.g. a jet engine airfoil or blade. The composition comprises a filled, normally solid resinous material which contains as an organic moiety, a blend of a dimeric fatty acid containing from 32 to 40 carbon atoms, a C.sub.5 -C.sub.6 alkylene hydrocarbon polymer, and a nonpolar aromatic hydrocarbon polymer, said blend having dispersed therein a minor amount of an alkyl cellulose ether. A method of encapsulating a workpiece with such a composition is also disclosed.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: January 2, 1979
    Assignee: TRW Inc.
    Inventor: Fred B. Speyer
  • Patent number: 4131574
    Abstract: A method for the manufacture of a starch solution in which, in the thermochemical conversion of starch using oxidizing agent and mechanical shear on the starch slurry at 110.degree. C to 180.degree. C, an amino-formaldehyde resin is added to the starch slurry before subjecting it to the mechanical shear.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: December 26, 1978
    Assignee: British Industrial Plastics Ltd.
    Inventors: Harold Isherwood, John T. Shaw
  • Patent number: 4131572
    Abstract: Low molecular weight copolymers of (1) acrylic acid esters or methacrylic acid esters of alcohols such as methanol with (2) esters of bicyclic alcohols such as isobornyl alcohol and unsaturated acids such as methacrylic acid, as contrasted with high molecular weight copolymers of such monomers (1) and (2) (see U.S. patent No. 3,485,775) and as contrasted to other acrylic polymers, are found to be exceptional in compatibility with practically all types of hard coating resins, and to lower the flow temperature of the mixture when using powder coating methods such as an electrostatic spray or a fluidized bed, electrostatic or not, as compared with the use of the hard coating resin alone.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: December 26, 1978
    Assignee: Rohm and Haas Company
    Inventor: William H. Brendley, Jr.
  • Patent number: 4131571
    Abstract: A coating composition containing(1) an acrylic polymer having pendent hydroxyl containing ester groups;(2) cellulose acetate buryrate,(3) an alkyl acid phosphate,(4) a metallic flake pigment such as aluminum flake and, optionally other pigments,(5) an ultraviolet light absorbing agent(6) an organo metal catalyst, and(7) an organic polyisocyanate;The composition forms an excellent finish for the exterior of automobiles and trucks since the finish is glossy, durable and weatherable and has excellent metallic glamour.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: December 26, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Keenan L. Crawley, Lester I. Miller
  • Patent number: 4130539
    Abstract: There is described a process for producing readily dispersible, nondusty dye preparations in granulated form, in which process difficultly water-soluble to water-insoluble dyes, pigments or optical brighteners, in a finely dispersed form, and water-insoluble carrier resins from the polyvinylacetal class are added with vigorous shaking or stirring, to a two-phase system composed of water and a polar organic solvent having only limited solubility in the aqueous phase; the organic phase containing the dye and the carrier resin is dissipated by dilution with water; and the particles of the preparation are separated and freed from the aqueous, solvent-containing phase by rinsing and drying; the preparations which contain transferable dyes are especially useful for preparing a printing ink by dispersion in a liquid medium composed of water or of an organic solvent or of a mixture of water and an organic solvent; the printing inks thus obtained are themselves useful for printing paper which can be used in a transfer
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: December 19, 1978
    Assignee: Ciba-Geigy AG
    Inventor: Jacques E. Wegmann
  • Patent number: 4125492
    Abstract: Columns of polysaccharide, e.g., agarose, derivatives comprising covalently bonded gangliosides quantitatively adsorb the .sup.125 I-labeled cholera toxin of chromatographed samples. The most preferred derivatives are those wherein the gangliosides are coupled to "macromolecules" [native albumin, denatured albumin, poly(L-lysine) and poly(L-lysyl-DL-alanine) graft copolymers] which themselves are covalently bonded to the, e.g., agarose. The soluble ganglioside polymers can prevent the binding of .sup.125 I-labeled toxin to liver membranes as well as block completely the lipolytic activity of cholera toxin on fat cells, and thus are useful in the management of the manifestations of clinical cholera.
    Type: Grant
    Filed: August 10, 1976
    Date of Patent: November 14, 1978
    Inventors: Pedro Cuatrecasas, Indu Parikh
  • Patent number: 4125631
    Abstract: Disclosed herein is a process for bringing amino-type compounds such as amines, amides, imines and proteins, containing --NH.sub.2 and .dbd.NH groups, into liquid form, usually a solution, by reaction with glyoxals. The resulting liquids, which can dissolve further materials such as natural and synthetic fibres, are especially useful as hardeners for collageneous materials used in the preparation of films such as sausage casings. An especially preferred preparation for this purpose comprises an animal hide fibre composition and a precondensate formed from collagen scrap, e.g. waste skin casing or leather scraps, dissolved in a solution of glyoxal.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: November 14, 1978
    Inventors: Bruno Stahlberger, Werner VON Dach
  • Patent number: 4123398
    Abstract: A regenerated cellulosic product is made flame resistant by the addition to the cellulosic solution from which the product is regenerated of from 3 to 7% by weight of colloidal antimony pentoxide and from 5 to 30% by weight of polyvinyl bromide.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: October 31, 1978
    Assignee: International Telephone and Telegraph Corporation
    Inventors: David G. Unrau, Norman A. Portnoy, Peter J. Hartmann
  • Patent number: 4123397
    Abstract: A method of agglomerating and desolventizing starch-hydrolyzed polyacrylonitrile graft copolymer using atomized, liquid water.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: October 31, 1978
    Assignee: General Mills Chemicals, Inc.
    Inventor: Duane A. Jones
  • Patent number: 4122144
    Abstract: Rigid shaped articles are formed by providing a novel thermosetting phenol-formaldehyde resin having a characteristic structure and infra-red spectrum as a coating over the surfaces of a plurality of individual elements, forming the coated elements into a shape and thermosetting the resin of the coating.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: October 24, 1978
    Assignee: Cor Tech Research Ltd.
    Inventors: Ramesh C. Vasishth, Pitchaiya Chandramouli
  • Patent number: 4120835
    Abstract: An improved thermosetting acrylic enamel containing a film-forming polymer blend of(1) an acrylic polymer containing reactive carboxyl and hydroxyl groups,(2) cellulose acetate butyrate having a 1-6 second viscosity, and(3) a melamine formaldehyde resin at least partially alkylated with an aliphatic monohydric alcohol;The improvement used in combination with the above comprises 0.1-5% by weight, based on the weight of the polymer blend, of iron pyrophosphate powder; this enamel forms a high quality finish on automobiles and trucks and the iron pyrophosphate provides improved gloss retention, and improved blister and darkening resistance under high temperature and humidity conditions.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: October 17, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carol Eve Goodell
  • Patent number: 4120836
    Abstract: The evolution of formaldehyde from shaped cellulose acetayte articles containing methylolated melamine or guanamine polymers is reduced by adding to the solutions from which the cellulose acetate article is regenerated, from 1 to 20% by weight based on the weight of the methylolated polymer of a cyclic urea compound.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: October 17, 1978
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Andrew B. Auerbach, John P. Thelman, Albin F. Turbak
  • Patent number: 4121009
    Abstract: Improved anti-static fabric softening compositions, that are obtainable from certain amphoteric surface active agents, are especially useful in processes for household clothes' drying without adversely affecting the rewetting or soil-release properties of the softened fabric.
    Type: Grant
    Filed: September 14, 1976
    Date of Patent: October 17, 1978
    Assignee: GAF Corporation
    Inventor: Paritosh Mohan Chakrabarti
  • Patent number: 4119591
    Abstract: An asbestos free organic base friction material for use as a friction lining of a brake. A combination of fibers selected from a group consisting of steel, cellulose, glass mineral and rayon fibers and a thermosetting resin binder are combined with cashew nut particles, elastomeric modifiers and inorganic modifiers to produce an organic base friction material having a substantial stable coefficient of friction over the normal operating range of the brake.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: October 10, 1978
    Assignee: The Bendix Corporation
    Inventor: Francis William Aldrich
  • Patent number: 4119590
    Abstract: A polyion complex is produced by reacting a weak acid type or a strong acid type polyanion polymer with a nucleic acid base-containing polycation polymer.
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: October 10, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Toru Seita, Akihiko Shimizu, Yujiro Kosaka
  • Patent number: 4119589
    Abstract: Biologically active proteins are immobilized onto a carrier by reacting a compound containing at least two secondary amino groups at a temperature of from -80.degree. to +50.degree. C with a chlorination agent with the conversion of the secondary amino groups into iminochloride groups of the formula ##STR1## in which R and R.sub.1, which can be the same or different, are aliphatic, aromatic or aliphatic-aromatic radicals, and reacting the carrier material product thus obtained(a) directly with a biologically-active protein, in an aqueous solvent, or(b) with a bifunctional compound containing at least one primary amino group, optionally in an aqueous or organic solvent, and reacting the product thereby obtained containing groups of the formula ##STR2## in which R.sub.2 is an alkylene radical, an .alpha.,.omega.
    Type: Grant
    Filed: January 18, 1977
    Date of Patent: October 10, 1978
    Assignee: Boehringer Mannheim GmbH
    Inventors: Jurgen Horn, Hans-Georg Batz, Dieter Jaworek