Patents by Inventor Lawrence J. Scotchie

Lawrence J. Scotchie 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).

  • Process for the manufacture of copolymers of formaldehyde and diphenyl oxide
    Patent number: 6646095
    Abstract: A process for the manufacture of copolymers of formaldehyde and diphenyl oxide and a carboxylic acid uses and acid with a pKa in the range of 1.2 to 3 as the catalyst.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: November 11, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Kelly J. Seheult, Shane M. Carter, Lawrence J. Scotchie
  • Process for the manufacture of copolymers of formaldehyde and diphenyl oxide
    Publication number: 20030162936
    Abstract: A process for the manufacture of copolymers of formaldehyde and diphenyl oxide and a carboxylic acid uses and acid with a pKa in the range of 1.2 to 3 as the catalyst.
    Type: Application
    Filed: January 16, 2002
    Publication date: August 28, 2003
    Inventors: Kelly J. Seheult, Shane M. Carter, Lawrence J. Scotchie
  • Process for recrystallizing 1,3-bis(aminophenoxy benzene)
    Patent number: 6008413
    Abstract: A process for purifying 1,3-bis(aminophenoxy benzene) (APB) on a manufacturing scale to at least 99.5% purity comprises the sequential steps of (a) forming the dihydrochloride salt of APB (hereinafter APB-HCl), (b) recrystallizing the APB-HCl from isopropyl alcohol, and (c) converting the APB-HCl to free APB.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: December 28, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventor: Lawrence J. Scotchie
  • Method of preparing crosslinked starch esters
    Patent number: 5629416
    Abstract: A process for preparing biodegradable, high humidity resistant crosslinked starch esters comprising reacting starch with monocarboxylic acid anhydride in a caustic catalyzed system to a DS of about 1.3 to 2.7 and crosslinking the starch ester in the same reaction mixture with polyfunctional acid and/or anhydride.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: May 13, 1997
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Dennis Neigel, Lawrence J. Scotchie, Martin M. Tessler