Patents by Inventor John Gillan

John Gillan 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).

  • Patent number: 4314033
    Abstract: This invention relates to a novel product, fibrils of crosslinked polyester resin having a vesiculated structure, and to a process of making them.Vesiculated fibrils of crosslinked polyester resin of length 50 .mu.m-5 cm, diameter 1 .mu.m-2 mm and aspect ratio of 10-50 are prepared by pouring into water with stirring a selected solution in unsaturated monomer of a carboxylated unsaturated polyester resin of acid value 10-90 mg KOH per g., the water containing both a base having a pK.sub.b value of 8 maximum and a dispersion stabilizer, and initiating polymerization. The polyester solution is selected for suitability for fibril formation by means of a buoyancy test.The fibrils are useful in a number of applications, for example, as fillers for paints and putties, viscosity modifiers in liquids and replacements in some applications for fibrous mineral extenders such as asbestos.
    Type: Grant
    Filed: November 19, 1980
    Date of Patent: February 2, 1982
    Assignee: Dulux Australia Ltd.
    Inventors: John Gillan, Colin M. Richards
  • Patent number: 4273830
    Abstract: This invention relates to a novel product, fibrils of crosslinked polyester resin having a vesiculated structure, and to a process of making them.Vesiculated fibrils of crosslinked polyester resin of length 50 .mu.m-5 cm, diameter 1 .mu.m-2 mm and aspect ratio of 10-50 are prepared by pouring into water with stirring a selected solution in unsaturated monomer of a carboxylated unsaturated polyester resin of acid value 10-90 mg KOH per g., the water containing both a base having a pK.sub.b value of 8 maximum and a dispersion stabilizer, and initiating polymerization. The polyester solution is selected for suitability for fibril formation by means of a buoyancy test.The fibrils are useful in a number of applications, for example, as fillers for paints and putties, viscosity modifiers in liquids and replacements in some applications for fibrous mineral extenders such as asbestos.
    Type: Grant
    Filed: August 21, 1979
    Date of Patent: June 16, 1981
    Assignee: Dulux Australia Limited
    Inventors: John Gillan, Colin M. Richards
  • Patent number: 4124548
    Abstract: A matt paint which is mar-resistant is produced by the incorporation therein of polymer beads of two distinct size ranges, one range having diameters of from 2-10 micron and the other having diameters of from 10-40 micron, the total volume of beads comprising from 50-90% of the volume of the non-volatile content of the paint, and the beads of the larger size range comprising from 45-55% of the total bead volume. The reflectance of the paint is related to the size and the type of beads used.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: November 7, 1978
    Assignee: Dulux Australia Ltd.
    Inventors: John Gillan, Frederick J. Lubbock
  • Patent number: 4089819
    Abstract: A process of preparing vesiculated polyester resin granules in which self-stabilizing and self-vesiculating disperse particles of an unsaturated polyester resin, wherein the polyester contains 2-50% of poly(ethylene oxide) of average molecular weight 1,000 to 10,000, are polymerized in an aqueous medium to polymeric vesiculated granules. The aqueous slurry of granules may be dried to a soft powder. These granules are useful as a component in paint.
    Type: Grant
    Filed: September 8, 1977
    Date of Patent: May 16, 1978
    Assignee: Dulux Australia Limited
    Inventors: Roger Hampton Coates, John Gillan
  • Patent number: D915773
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: April 13, 2021
    Inventor: Michael John Gillan