Patents by Inventor Nelson E. Lawson

Nelson E. Lawson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6592857
    Abstract: A low molecular weight, tertiary amide terminated polyamide may be blended with a liquid hydrocarbon to form a transparent composition having gel consistency, and this gel may be used to formulate a cosmetic. The tertiary amide terminated polyamide may be prepared by reacting “x” equivalents of dicarboxylic acid wherein at least 50% of those equivalents are from polymerized fatty acid, “y” equivalents of diamine such as ethylene diamine, and “z” equivalents of a monofunctional reactant having a secondary amine group as the only reactive functionality. The stoichiometry of the reaction mixture is preferably such that 0.9≦{x/(y+z)}≦1.1 and 0.1≦{z/(y+z)}<0.7. The gel contains about 5-50% tertiary amide terminated polyamide, with the remainder preferably being pure hydrocarbon.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: July 15, 2003
    Assignee: Arizona Chemical Company
    Inventors: Nelson E Lawson, Richard C MacQueen, Mark S Pavlin
  • Patent number: 6562888
    Abstract: Rosin esters that are both light-colored and color stable may be produced by reacting rosin with an organic compound containing two or more hydroxyl groups each separated from each other by at least four carbon atoms. With appropriate choices for the esterification catalyst and antioxidant(s), the rosin ester may be useful as a tackifier, and can be formulated into an adhesive composition. The adhesive compositions will further comprise an appropriate adhesive polymer.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: May 13, 2003
    Assignee: Arizona Chemical Company
    Inventors: Charles R. Frihart, Nelson E. Lawson, Brett A. Neumann
  • Publication number: 20030069388
    Abstract: A low molecular weight, tertiary amide terminated polyamide may be blended with a liquid hydrocarbon to form a transparent composition having gel consistency, and this gel may be used to formulate a cosmetic. The tertiary amide terminated polyamide may be prepared by reacting “x” equivalents of dicarboxylic acid wherein at least 50% of those equivalents are from polymerized fatty acid, “y” equivalents of diamine such as ethylene diamine, and “z” equivalents of a monofunctional reactant having a secondary amine group as the only reactive functionality. The stoichiometry of the reaction mixture is preferably such that 0.9≦{x/(y+z)}≦1.1 and 0.1≦{z/(y+z)}<0.7. The gel contains about 5-50% tertiary amide terminated polyamide, with the remainder preferably being pure hydrocarbon.
    Type: Application
    Filed: December 13, 2001
    Publication date: April 10, 2003
    Inventors: Nelson E. Lawson, Richard C. MacQueen, Mark S. Pavlin
  • Patent number: 6503522
    Abstract: A structured, solid composition that contains at least one colorant, a liquid oil phase, and a gellant, wherein the gellant is a tertiary amide-terminated polyamide resin (ATPA) of the formula (1): wherein, n designates a number of repeating units such that terminal amide groups constitute from 10% to 50% of the total amide groups; R1 at each occurrence is independently selected from a C1-22 hydrocarbon group; R2 at each occurrence is independently selected from a C2-42 hydrocarbon group; R3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and R3a at each occurrence is independently selected from hydrogen, C1-10 alkyl and a direct bond to R3 or another R3a such that the N atom to which R3 and R3a are both bonded is part of a heterocyclic structure defined in part by R3a—N—R3, the composition being in the form of a solid; the liquid
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: January 7, 2003
    Assignee: Arizona Chemical Company
    Inventors: Nelson E. Lawson, Mark S. Pavlin
  • Patent number: 6469131
    Abstract: 1.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: October 22, 2002
    Assignee: Arizona Chemical Company
    Inventors: Nelson E. Lawson, Mark S. Pavlin
  • Publication number: 20020037993
    Abstract: A structured, solid composition that contains at least one colorant, a liquid oil phase, and a gellant, wherein the gellant is a tertiary amide-terminated polyamide resin (ATPA) of the formula (1): 1
    Type: Application
    Filed: June 27, 2001
    Publication date: March 28, 2002
    Inventors: Nelson E. Lawson, Mark S. Pavlin
  • Publication number: 20020035237
    Abstract: 1.
    Type: Application
    Filed: July 6, 2001
    Publication date: March 21, 2002
    Inventors: Nelson E. Lawson, Mark S. Pavlin
  • Patent number: 6084061
    Abstract: Anthraquinone is removed from tall oil or tall oil fraction by adsorption with activated carbon. The process is particularly useful in the removal of anthraquinone from tall oil heads.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: July 4, 2000
    Assignee: Arizona Chemical Corporation
    Inventors: Nelson E. Lawson, Gregory S. Gorman
  • Patent number: 4495095
    Abstract: In the present invention, tall oil acids are prepared by acidulating tall oil soap with supercritical fluid carbon dioxide. The method of preparation is carried out at a temperature of from about 31.degree. to 400.degree. C. and the supercritical carbon dioxide is under a pressure of from about 1075 to about 50,000 psi. The acidulate is extracted into the fluid phase of the supercritical carbon dioxide. The resultant tall oil acids are then recovered from the carbon dioxide fluid phase.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: January 22, 1985
    Assignee: Union Camp Corporation
    Inventors: Nelson E. Lawson, Gamal I. Amer
  • Patent number: 4414146
    Abstract: Polymers having pendant sulfonic acid groups are disclosed as catalysts for polymerizing rosin.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: November 8, 1983
    Assignee: Union Camp Corporation
    Inventors: Jerome R. Olechowski, Nelson E. Lawson
  • Patent number: 4115330
    Abstract: Disclosure is made of radiation curable, solventless compositions useful in coatings, films and in preparing printing inks. The compositions comprise the reaction product of an equivalent excess of an acrylic type acid with a particular class of polyester polyol. The polyester polyol is the condensation product of an excess of an aliphatic polyol having at least two hydroxyl groups and a molecular weight of from 60 to 250 with a specific class of aliphatic polycarboxylic acids derived from fatty and resin acids.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: September 19, 1978
    Assignee: Union Camp Corporation
    Inventor: Nelson E. Lawson
  • Patent number: 4101477
    Abstract: Disclosure is made of radiation curable, solventless compositions useful in coatings, films and in preparing printing inks. The compositions comprise the reaction product of an equivalent excess of an acrylic type acid with a particular class of polyester polyol. The polyester polyol is the condensation product of an excess of an aliphatic polyol having at least two hydroxyl groups and a molecular weight of from 60 to 250 with a specific class of aliphatic polycarboxylic acids derived from fatty and resin acids.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: July 18, 1978
    Assignee: Union Camp Corporation
    Inventor: Nelson E. Lawson
  • Patent number: 4089825
    Abstract: Disclosure is made of radiation curable, solventless compositions useful in coatings, films and in preparing printing inks. The compositions comprise the reaction product of an equivalent excess of an acrylic type acid with a particular class of polyester polyol. The polyester polyol is the condensation product of an excess of an aliphatic polyol having at least two hydroxyl groups and a molecular weight of from 60 to 250 with a specific class of aliphatic polycarboxylic acids derived from fatty and resin acids.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: May 16, 1978
    Assignee: Union Camp Corporation
    Inventor: Nelson E. Lawson
  • Patent number: 4076665
    Abstract: Disclosure is made of radiation curable, solvent-less compositions useful in coatings, films and in preparing printing inks. The compositions comprise the reaction product of an equivalent excess of an acrylic type acid with a particular class of polyester polyol. The polyester polyol is the condensation product of an excess of an aliphatic polyol having at least two hydroxyl groups and a molecular weight of from 60 to 250 with a specific class of aliphatic polycarboxylic acids derived from fatty and resin acids.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: February 28, 1978
    Assignee: Union Camp Corporation
    Inventor: Nelson E. Lawson
  • Patent number: 4035320
    Abstract: Disclosure is made of radiation curable, solventless compositions useful in coatings, films and in preparing printing inks. The compositions comprise the reaction product of an equivalent excess of an acrylic type acid with a particular class of polyester polyol. The polyester polyol is the condensation product of an excess of an aliphatic polyol having at least two hydroxyl groups and a molecular weight of from 60 to 250 with a specific class of aliphatic polycarboxylic acids derived from fatty and resin acids.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: July 12, 1977
    Assignee: Union Camp Corporation
    Inventor: Nelson E. Lawson