Patents Assigned to Brent International PLC
  • Methods of and compositions for preventing corrosion of metal substrates
    Patent number: 6203854
    Abstract: A method for protecting a metal substrate from corrosion comprises the steps of providing a metal substrate and applying a treatment solution to the surface of the metal substrate, wherein the treatment solution comprises a partially hydrolyzed aminosilane and a fluorine-containing inorganic compound. Preferably the metal substrate is selected from the group consisting of aluminum, aluminum alloys and mixtures thereof.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: March 20, 2001
    Assignee: Brent International PLC
    Inventor: John C. Affinito
  • Method of treating metals using amino silanes and multi-silyl-functional silanes in admixture
    Patent number: 6132808
    Abstract: The invention relates to a method of improving corrosion resistance of a metal. The method comprises applying a solution containing one or more amino silanes in admixture with one or more multi-silyl-functional silanes to a metal substrate in order to form a long term corrosion resistant coating. The method is particularly suitable for use on cold-rolled steel, zinc, iron, aluminium and aluminium alloy surfaces.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: October 17, 2000
    Assignee: Brent International PLC
    Inventors: Kevin Brown, Erwin Barry Bines, Jun Song, Nie Tang
  • Method of treating metals using ureido silanes and multi-silyl-functional silanes in admixture
    Patent number: 6106901
    Abstract: The present invention relates to a method of metal treatment, particularly a method of metal treatment in order to improve corrosion resistance. The method comprises applying a solution containing one or more ureido silanes in admixture with one or more multi-silyl-functional; silanes to a metal substrate. The method is particularly suitable for use on cold-rolled steel, zinc, iron, aluminium and aluminium alloy surfaces.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: August 22, 2000
    Assignee: Brent International PLC
    Inventors: Jun Song, Nie Tang, Kevin Brown, Erwin B. Bines
  • Method of treating metals using vinyl silanes and multi-silyl-functional silanes in admixture
    Patent number: 6071566
    Abstract: The present invention relates to a method of treating a metal substrate to provide permanent corrosion resistance. The method comprises applying a solution containing one or more vinyl silanes in admixture with one or more multi-silyl-functional silanes to a metal substrate in order to form a coating. The method is particularly suitable for use on zinc coated surfaces.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: June 6, 2000
    Assignee: Brent International PLC
    Inventors: Kevin Brown, Nie Tang, Jun Song
  • Pre-rinse for phosphating metal surfaces
    Patent number: 5868873
    Abstract: Disclosed is a composition for the pre-rinsing of a metal surface prior to phosphating, a method for preparing the composition, and a method for using the composition to pre-condition the metal surface. The composition is an aqueous suspension containing a water-insoluble manganese phosphate having the formula Mn.sub.x X.sub.y H.sub.2 (PO.sub.4).sub.4.nH.sub.2 O, in which X is a divalent metal ion other than manganese, x+y is 5 and x is a positive number of from 1 to 5, y is 0, 1, 2, 3 or 4, and n is less than 4.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: February 9, 1999
    Assignee: Brent International PLC
    Inventors: Kevin Brown, Gianfranco Filippo Liberti, Sarfraz Ali, David Thomas Gawne