Patents Examined by Edward M. Woodberry
  • Patent number: 4296219
    Abstract: A bisimide-ether compound having the general formula is obtained by reacting an ethylenically unsaturated dicarboxylic acid anhydride, a diamine compound and a phenolic compound having in the molecule at least two hydroxyl groups, or by reacting a prepolymer of the anhydride and diamine compound with the phenolic compound: ##STR1## wherein R.sub.1 is a group containing at least two carbon atoms, R.sub.2 is a group containing at least two carbon atoms, R'.sub.2 is a group containing at least two carbon atoms and a carbon-carbon double bond, R.sub.3 is an aromatic group, the nitrogen atoms of the imide rings being directly connected to different carbon atoms of the group R.sub.1, the carbonyl groups of the imide rings being directly connected to different carbon atoms of the group R.sub.2 or R'.sub.2, the oxygen atoms between the groups R.sub.2 and R.sub.3 being directly connected to an aromatic nucleus of the group R.sub.3, and n is an integer of zero, one or more than 1.
    Type: Grant
    Filed: January 22, 1979
    Date of Patent: October 20, 1981
    Assignees: Hitachi, Ltd., Hitachi Chemical Co., Ltd.
    Inventors: Akio Takahashi, Yutaka Itoh, Motoyo Wajima, Hirosada Morishita, Akio Nishikawa
  • Patent number: 4294730
    Abstract: Compositions for application to the interior surface of the tread of a pneumatic tire to facilitate relative movement between contacting portions of the interior surface when the tire is driven deflated, comprise a polybutene, an acrylic polymer or a polyolefin as a gelling agent for the polybutene, and a particulate solid puncture sealing material. Preferred gelling agents are polyethylenes, especially a mixture of high density and low density polyethylenes. Examples of suitable puncture sealing materials are rubber crumb and wood flour.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: October 13, 1981
    Assignee: Dunlop Limited
    Inventor: Michael J. Kenney
  • Patent number: 4293458
    Abstract: This invention is directed to a composition for pretreating the back of wallpaper, which comprises a mixture of:(a) a fine-grained dispersion of film-forming, non-blocking thermoplastic polymer;(b) a paraffin dispersion;(c) natural or synthetic zeolite;(d) optionally, additional conventional additives; and(e) water.
    Type: Grant
    Filed: January 17, 1980
    Date of Patent: October 6, 1981
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Eberhard Gruenberger, Roswitha Muller
  • Patent number: 4287103
    Abstract: A filler composition of the type used to hide the joint of adjoining wallboard panels and comprising filler, binder, bulking agent and improved starch-bodying agent, and optionally a water retention agent.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: September 1, 1981
    Assignee: Georgia-Pacific Corporation
    Inventors: George W. Green, Hubert C. Francis
  • Patent number: 4285843
    Abstract: A wood chip board the binder of which is an aminoplast, the amount of solid resin binder in the area of the surfaces of the board being less than 8% by weight of the chip material (absolutely dry) and the amount of solid resin binder in the area of the center of the board being equal or higher than in the area of the surfaces of the board as a percentage of the chip material in the center of the board. In preparing such a board the chip material providing the surfaces is advantageously glued with a liquor of an aminoplast the concentration of which is about 10 to 35% and preferably about 20 to 30%.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: August 25, 1981
    Assignee: Osterreichische Hiag-Werke Aktiengesellschaft
    Inventor: Herbert Mayerhoffer
  • Patent number: 4284538
    Abstract: A sizing composition is provided for glass fibers to render the glass fibers more dispersible in aqueous solutions. The sizing composition has present an aqueous dispersion of cationic imidazoline; aliphatic, aromatic and/or polymeric ester; and polyethylene in an amount equivalent to an amount in the range of about 0.1 to about 1.5 weight percent of the aqueous sizing composition based on an approximately 30 percent active aqueous dispersion. The sizing composition may also contain, depending on the use, other components such as starch, lubricant, emulsifying agents, wetting agents, plasticizers, biocides and the like.
    Type: Grant
    Filed: June 21, 1979
    Date of Patent: August 18, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Roy R. Graham
  • Patent number: 4282121
    Abstract: A starch-hydrolyzed polyacrylonitrile graft copolymer dispersed in polyhydric alcohols such as glycerol combines to form a resilient, soft, shock absorbent type material after heating. The material is useful for seat pads, artificial limb pads, toys and other applications where resilient, soft, shock absorbent materials find utility.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: August 4, 1981
    Assignee: Henkel Corporation
    Inventor: Phillip W. Goodrich
  • Patent number: 4280937
    Abstract: Graft copolymers of A 2 to 30% by weight of a polysaccharide ester as graft basis, and B 98 to 70% by weight of a grafted monomer mixture of (1) 8 to 90% by weight of ethylene and (2) 92 to 10% by weight of vinyl acetate. The polymers are suitable for the production of moulding compounds, films, packaging foils, and coatings.
    Type: Grant
    Filed: September 25, 1979
    Date of Patent: July 28, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Bartl, Fritz Mietzsch
  • Patent number: 4279790
    Abstract: This invention provides composite material compositions comprising wastepaper, a thermoplastic resin and/or other additive(s), said compositions having higher heat resistance, flame retardancy and mechanical strength and smaller linear shrinkage in molding than the conventional compositions of synthetic resins alone or blended with woodmeal or an inorganic filler. There is also provided a method of producing said compositions comprising a wastepaper crushing step, a step of mixing crushed wastepaper with a thermoplastic resin and/or other additive(s) while drying said wastepaper, a blend melting step, a blend kneading step and a blend granulating step. In an embodiment of this invention, scraps of moldings from the composite material compositions using wastepaper may be mixed with wastepaper, a thermoplastic resin and/or other additive(s) and similarly treated and molded into a new composition.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: July 21, 1981
    Assignee: Kabushiki Kaisha Mikuni Seisakusho
    Inventor: Yoshikazu Nakajima
  • Patent number: 4279791
    Abstract: This invention relates to removal of cerium, used as a free-radical initiator, from aqueous polymeric dispersions, particularly starch graft copolymer dispersions, by adsorbing cerium (III) onto a strong cation exchange resin, to separation of the adsorbed cerium (III) from the resin using a solution such as sodium sulfate or sodium oxalate to form a cerium (III) precipitate, and to oxidation of the separated cerium (III) to cerium (IV).
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: July 21, 1981
    Assignee: Standard Brands Incorporated
    Inventor: Edwin L. Speakman
  • Patent number: 4279787
    Abstract: This invention relates to a method of binding antigenically active materials to the surface of water insoluble, hydrophobic polymeric substances which comprises pretreating the water-insoluble hydrophobic polymeric substance with an aldehyde of the formula, OHC--X--CHO, wherein X may be --CH.sub.2).sub.n, wherein n is an integer of from 1 to 10; cycloalkyl, for example, cyclopentyl, cyclohexyl; monocyclic aryl, for example, phenyl, and thereafter contacting the thus treated polymeric material with the purified antigenically active material to be bound thereto. The final products of this invention are employable as diagnostic products.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: July 21, 1981
    Assignee: Tetra Consultants Inc.
    Inventor: Menno Huizinga
  • Patent number: 4279789
    Abstract: A polyvinyl chloride surface, such as plasticized polyvinyl chloride telephone cord jacket, is coated with a coating formulation comprising a medium molecular weight methyl methacrylate copolymer, cellulose acetate butyrate and a carbalkoxy benzyl phthalate plasticizer. The coating affords good adhesion, fast drying and stain resistance.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: July 21, 1981
    Assignees: Western Electric Company, Inc., Bell Telephone Laboratories, Inc.
    Inventors: Donald E. Lueddecke, John J. Mottine, Jr., William C. Vesperman
  • Patent number: 4278573
    Abstract: Novel cationic starch-g-poly(N,N'-methylenebisacrylamide-co-amine) copolymers, useful as pigment retention aids for paper, are prepared by reacting a starch base with N,N'-methylenebisacrylamide and a polyamine or with preformed copolymer. The reactions are carried out at 15.degree. to 80.degree. C. for 0.5 to 20 hours under alkaline conditions using an aqueous slurry or dispersion of a starch base and preferably a salt such as sodium sulfate. The starch base may be derivatized, prior to the graft copolymerization, to introduce ether groups. The polyamines contain at least two amine groups selected from primary and secondary amines; preferably they contain up to 4 amine nitrogens, some of which may be unreactive tertiary amine nitrogens.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: July 14, 1981
    Assignee: National Starch and Chemical Corporation
    Inventor: Martin M. Tessler
  • Patent number: 4276207
    Abstract: A coloring system for temporarily or permanently dyeing fibers uses polyhydric alcohols to soften starch and cellulose derivatives in an organic acid solution to form glycolate modofied derivatives. Hydrophobic pigment particles are mixed with the glycolate modified derivatives after reducing the acidity of the solution with a base, resulting in a water removable temporary dye system that may be converted into a permanent dye by adding a latex suspension.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: June 30, 1981
    Assignee: Polymerics, Inc.
    Inventors: David Lester, Robert Alexander
  • Patent number: 4274985
    Abstract: The present invention concerns new cyclodextrin-polyvinyl alcohol polymers capable of forming inclusion complexes. The preparation of said polymers by cross-linking a cyclodextrin, a mixture of cyclodextrins, or carbohydrate mixtures containing cyclodextrins in the presence of polyvinyl alcohol, polyvinyl acetate or a polyvinyl alcohol-polyvinyl acetate copolymer, with a polyfunctional coupling reactant capable of reacting with the cyclodextrins and with the polymers present is also within the scope of the invention.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: June 23, 1981
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Jozsef Szejtli, Eva Fenyvesi, Sandor Zoltan, Bela Zsadon, Ferenc Tudos
  • Patent number: 4269953
    Abstract: A method of increasing the strength and high temperature resistance of aromatic thermoplastic polymers by adding thereto an appropriate amount of certain biphenylene terminated compounds, then heating the mixture to a crosslinking reaction temperature. The biphenylene additive has been found to function as a plasticizer for the polymer, making it easier to work, mold, extrude, etc. prior to the heating step.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: May 26, 1981
    Assignee: General Dynamics Corporation
    Inventor: Richard A. Brand
  • Patent number: 4263183
    Abstract: Blended composition of cellulose ester and a copolyacrylate having improved notched Izod impact strength and excellent visual clarity; the cellulose ester being selected from cellulose acetate butyrate and cellulose acetate propionate; and the copolyacrylate including about 5 to about 20 parts per hundred parts resin of a copolymer containing about 45 to about 55% by weight butyl acrylate and about 55 to about 45% by weight methyl acrylate.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: April 21, 1981
    Assignee: Eastman Kodak Company
    Inventors: Ronald R. Light, John R. Dombroski, Hawkins, James M.
  • Patent number: 4261870
    Abstract: A process for the bulk or suspension polymerization of vinyl chloride in the presence of a redox catalyst system consisting of a peroxyester and a monosaccharide or a carboxylic acid ester of a monosaccharide.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: April 14, 1981
    Assignee: Dart Industries Inc.
    Inventor: Norman G. Gaylord
  • Patent number: 4261819
    Abstract: A method of abstracting heavy metal ions from solution in which a solution containing heavy metal ions is brought into contact with a cross-linked casein which is optionally thiolated.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: April 14, 1981
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventor: George Winter
  • Patent number: RE30576
    Abstract: A pre-mixed adhesive composition comprised of a vinyl acetate polymer emulsion including a cross-linking catalyst and a cross-linking inhibitor providing a good cured water resistant Type II bond and extended shelf life so that the adhesive composition will not gel over an extended period of time and will therefore be usable for direct gluing application to semi-porous and porous substrates.
    Type: Grant
    Filed: May 5, 1978
    Date of Patent: April 14, 1981
    Assignee: National Casein of New Jersey
    Inventor: Ming C. Woo