The Sulfur, Selenium, Or Tellurium Containing Material Is Inorganic Patents (Class 530/220)
  • Method for enriching rosin acids from a hardwood-containing sulfate soap
    Patent number: 5565134
    Abstract: The invention relates to a method for enriching rosin acids from a hardwood-containing sulfate soap, in which the soap is partially acidified at a temperature higher than room temperature with an inorganic or organic acid so as to give the resulting mother liquid a pH of 4.5-7, thus enabling the rosin acids to be enriched from the soap into the fraction converted to the acid form, and the fatty acids to be enriched in the soap.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: October 15, 1996
    Assignee: JPI Process Contracting Oy
    Inventors: Teemu Tanner, Jukka Koistinen
  • Stabilization of modified rosin
    Patent number: 5023319
    Abstract: This invention relates to a method for treating polymerized rosin to decrease its tendency to oxidize comprising heating the polymerized rosin to an elevated temperature in the presence of an effective amount of one or more disproportionating agents. This invention also relates to the novel products of such disproportionation treatments.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: June 11, 1991
    Assignee: Union Camp Corporation
    Inventors: Samuel D. Hollis, Robert W. Johnson, Jr.