Patents Assigned to High Point Chemical Corp.
  • Method for preparing an alkaline earth metal tallate
    Patent number: 6069119
    Abstract: A stable, fluid alkaline earth metal tallate dispersion is prepared by (i) forming a pre-emulsion of fatty acids derived from tall oil, water, and a surfactant; (ii) forming an alkaline earth metal salt dispersion from an alkaline earth metal oxide and/or hydroxide, a lower carboxylic acid, and water; and (iii) incorporating the pre-emulsion into the alkaline earth metal salt dispersion under high shear and low pressure.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: May 30, 2000
    Assignee: High Point Chemical Corp.
    Inventors: Peter M. Robinson, Robert E. Brooks, Terry E. Singleton
  • Method of preparing an alkaline earth metal tallate
    Patent number: 5763373
    Abstract: A stable, fluid alkaline earth metal tallate dispersion is prepared by (i) forming a pre-emulsion of fatty acids derived from tall oil, water, and a surfactant; (ii) forming an alkaline earth metal salt dispersion from an alkaline earth metal oxide and/or hydroxide, a lower carboxylic acid, and water; and (iii) incorporating the pre-emulsion into the alkaline earth metal salt dispersion under high shear and low pressure.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: June 9, 1998
    Assignee: High Point Chemical Corp.
    Inventors: Peter M. Robinson, Robert E. Brooks, Terry E. Singleton
  • Deinking formulation for flexographic inks
    Patent number: 5417807
    Abstract: The removal of hydrophilic flexographic inks from a pulp fiber slurry in a flotation or flotation/wash deinking system is accomplished by using a combination of (a) a fatty acid or salt thereof, (b) a rosin acid or salt thereof, and (c) a non-ionic or anionic surfactant along with water having a hardness of about 80 to 500 ppm Ca.sup.+2.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: May 23, 1995
    Assignees: KAO Corporation, High Point Chemical Corp.
    Inventors: Francisco F. Fossas, Pedro F. Ferre, Narciso R. Castano, Stephen P. Williams, Hideaki Urushibata
  • Method of removing hydrophilic ink
    Patent number: 5415733
    Abstract: The removal of inks, particularly hydrophilic flexographic inks, from a pulp fiber slurry is accomplished by use of a combination of (a) a non-ionic surfactant; (b) a fatty acid or salt thereof; and (c) a water-soluble cationic polymer having a molecular weight less than about 1,000,000 daltons, particularly a polymer derived from the reaction of epichlorohydrin and at least one diamine or the polymerization of aziridine.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: May 16, 1995
    Assignee: High Point Chemical Corp.
    Inventors: Peter M. Robinson, Stephen P. Williams, Thomas F. Skaar, Hideaki Urushibata