Patents Assigned to Delta Chemicals
  • Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions
    Patent number: 6036935
    Abstract: The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 14, 2000
    Assignee: Delta Chemical Corporation
    Inventor: James M. Dulko
  • Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions
    Patent number: 5997838
    Abstract: The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: December 7, 1999
    Assignee: Delta Chemical Corporation
    Inventor: James M. Dulko
  • Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions
    Patent number: 5985234
    Abstract: The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: November 16, 1999
    Assignee: Delta Chemical Corporation
    Inventor: James M. Dulko
  • Multi-chambered booth and method for filling drums
    Patent number: 5971043
    Abstract: An apparatus and method for filling drums with a substance. First and second external chambers are employed, and an interior filling chamber is employed, which is adjacent to the first and second external chambers. A first exterior door is provided between the first external chamber and an outside environment, a second exterior door is provided between the second external chamber and the outside environment, a first interior door is provided between the first external chamber and the filling chamber, and a second interior door is provided between the second external chamber and the filling chamber. The filling chamber fills a drum with the substance and vents out of the filling chamber gaseous emissions produced during said filling.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: October 26, 1999
    Assignee: Delta Deluxe, L.L.C. (D/B/A/ Delta Chemical Services)
    Inventor: Mark D. Aldrich
  • Production of paper and paper products
    Patent number: 5194120
    Abstract: Processes for making paper are disclosed wherein a cationic polymer and an amorphous metal silicate material are added to a paper furnish prior to introduction of the furnish to the headbox of a paper making apparatus.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: March 16, 1993
    Assignee: Delta Chemicals
    Inventors: Stephen Peats, Harris J. Bixler
  • Paper making
    Patent number: 5178730
    Abstract: A process for improving art chemistry in papermaking is accomplished by the addition of a cationic polymer and natural hectorite to the furnish prior to headbox. The cationic polymer has an intrinsic viscosity in the range of 5 to 25 dl/g and a charge density of 0.78 to 5 equivalent cationic nitrogen per Kg. The natural hectorite is added in an amount of 0.5 to 6 lbs/ton dry base sheet and the weight ratio of cationic polymer to natural hectorite being 0.5:1 to 10:1.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: January 12, 1993
    Assignee: Delta Chemicals
    Inventors: Harris J. Bixler, Stephen Peats
  • Paper making using hectorite and cationic starch
    Patent number: 5071512
    Abstract: Addition of hectorite and a cationic starch to the furnish in a paper making operation improves the retention of filler material and the quality of the paper.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: December 10, 1991
    Assignee: Delta Chemicals, Inc.
    Inventors: Harris J. Bixler, Stephen Peats