Natural Resin Patents (Class 162/180)
  • Paper sizing
    Patent number: 4323425
    Abstract: This invention relates to improved rosin sizes, and to improved methods for preparing sized paper. In one embodiment, sized paper is prepared by adding the improved rosin size and a polyamine retention aid to a pulp slurry before sheet formation, without the use of aluminum sulfate. In another embodiment, paper is surface-sized with the improved rosin size in the absence of both aluminum sulfate and retention aids.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: April 6, 1982
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Edwin Dowthwaite, Ian R. Hiskens
  • Sizing process and composition
    Patent number: 4302283
    Abstract: Improved paper sizing is obtained by using water soluble salts of substitutes succinic acid having the formula: ##STR1## wherein R' is essentially hydrocarbon group of the formula ##STR2## wherein R is hydrogen or alkyl, at least two R groups being alkyl, and the total number of carbon atoms in R' is from 16 to about 26.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: November 24, 1981
    Assignee: Ethyl Corporation
    Inventors: Sidney M. Blitzer, Harry D. Wilder
  • Sizing method and sizing composition for use therein
    Patent number: 4295931
    Abstract: Disclosed is a method for sizing paper wherein the sizing agent employed is a hydrophobic cellulose reactive sizing agent such as a ketene dimer sizing agent. There is employed in combination with the sizing agent a novel sizing accelerator whereby off-the-machine sizing is improved substantially. Disclosed also is a novel sizing composition comprised of the sizing agent and the accelerator, the accelerator being a poly(diallylamine)epihalohydrin resin.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: October 20, 1981
    Assignee: Hercules Incorporated
    Inventor: David H. Dumas
  • Cationic fortified rosin size
    Patent number: 4219382
    Abstract: An acid-fortified rosin is reacted with a water-soluble polyalkylenepolyamine. The product is a modified rosin polyamidopolyamine. The product can be partially or completely neutralized with a rosin, thereby forming a rosin soap of the polyamidopolyamine. The products can be emulsified in water, and are cationic, anionic or non-ionic depending on the pH of the water. The emulsions are sizing agents for paper.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: August 26, 1980
    Assignee: American Cyanamid Company
    Inventor: Carl T. Leffler
  • Paper sizing agents
    Patent number: 4207142
    Abstract: A sizing agent for use in paper-making comprises an aqueous emulsion of at least one compound of the formula ##STR1## wherein x is an integer from 5 to 16 inclusive. The sizing agent can be used for either internal of surface sizing; and is effective in the absence of, or in the presence of, a retention aid.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: June 10, 1980
    Assignee: Tenneco Chemicals, Inc.
    Inventor: David Shepherd
  • Emulsions of resinic acid isocyanates as sizing agents for paper
    Patent number: 4113506
    Abstract: Stable aqueous emulsions comprising a resinic acid isocyanate, a non-ionic and/or anionic emulsifier and an optionally chlorinated hydrocarbon are used as sizing agents for paper or paper-like materials.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: September 12, 1978
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Sackmann, Udo-Winfried Hendricks, Hans-Ludwig Honig, Gunter Kolb, Friedhelm Muller
  • Process for preparing stable aqueous dispersions of rosin-base material
    Patent number: 4071375
    Abstract: A process for preparing a stable aqueous dispersion of rosin-base material by dissolving in a water-immiscible organic solvent a rosin-base material composed of 0 to 95 wt. % of rosin and 100 to 5 wt. % of an adduct of rosin and .alpha.,.beta.-unsaturated carboxylic acid or anhydride thereof, dispersing the organic solvent solution in water in the presence of a dispersant and removing the organic solvent from the resulting emulsion, the process being characterized in that the dispersant in an alkali metal salt of a half alkyl sulfate.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: January 31, 1978
    Assignee: Arakawa Rinsan Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shuhei Ishibe, Toshiharu Okumichi, Yasushi Ishihara, Hisayoshi Naka
  • Surface sizing of paper with an acrylic copolymer where scum formation is minimized
    Patent number: 4030970
    Abstract: A process for surface sizing paper with a surface sizing composition, which comprises a copolymer of acrylic or methacrylic ester, alkali metal salts of acrylic or methacrylic acid, and acrylic or methacrylic acid, or ammonium or lower alkyl amine salts thereof, where substantially no scum forms in the press operation, even after 8 hours.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: June 21, 1977
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yoichi Tominaga, Yasuo Shibahara
  • Chemical condensation products, their preparation and use
    Patent number: 4019921
    Abstract: Condensation products are formed from the unsaponifiable constituents of tall oil and alpha- beta- unsaturated mono- or poly-basic aliphatic acids or their derivatives. The condensation products can be formed into aqueous soap solutions in which form they find use as agents in the sizing of paper, particularly when used as fortifying agents for rosin acid soap sizes.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: April 26, 1977
    Inventor: Adolf Koebner
  • Paper sized with ketene dimer modified water-dispersible thermosettable cationic resins
    Patent number: 3990939
    Abstract: Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable cationic resins are water-dispersible, and aqueous dispersions thereof are stable for prolonged periods of time at relatively high solids concentration. The thermosettable cationic resins have particular utility in the sizing of paper.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: November 9, 1976
    Assignee: Hercules Incorporated
    Inventors: Paul H. Aldrich, David H. Dumas
  • Stable rosin dispersions
    Patent number: 3966654
    Abstract: Disclosed are essentially stable aqueous dispersions of fortified rosin which consist essentially of fortified rosin in finely-divided form; a water-soluble cationic resin, a specific example of which is a water-soluble cationic aminopolyamide--epichlorohydrin resin; and water. The fortified rosin dispersion is used to size paper.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: June 29, 1976
    Assignee: Hercules Incorporated
    Inventor: Paul H. Aldrich