Patents by Inventor Elwin DE WOLF

Elwin DE WOLF 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: 12365757
    Abstract: The present invention relates to a polyol component comprising a1) a polyol having a weight averaged molecular weight Mw of from 1,000 to 4,000 Dalton, a number averaged molecular weight Mn of from 600 to 2,500 Dalton, an OH value between 80 and 300 mg KOH/g of resin and a glass transition temperature Tg of from ?10 to 90° C., and a2) between 0.1 and 10% by weight of polyurea product as rheological agent, as well as it use in a crosslinkable composition especially suitable for clear coat applications.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: July 22, 2025
    Assignee: ALLNEX NETHERLANDS BV
    Inventors: Elwin De Wolf, Marinus Goedegebuure
  • Patent number: 12269915
    Abstract: A particulate polyurea compound a2) for reducing gloss of coatings, a resin composition and a crosslinkable composition comprising the particulate polyurea compound is provided, wherein the volume percentage of particles of the particulate polyurea compound having a diameter of smaller than 10 ?m is equal or less than 40%, and the volume percentage of the polyurea product having a diameter larger than 20 ?m is equal or more than 11%.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: April 8, 2025
    Assignee: ALLNEX NETHERLANDS BV
    Inventors: Elwin De Wolf, Bart Noordover, Francesca Fallani, Sharon Maas, Ronald Koeken
  • Publication number: 20230183521
    Abstract: The present invention relates to a polyol component (A) comprising at least one polyacrylate polyol (A1), crosslinkable composition comprising the polyol component (A), and its use in coatings. More particularly, the polyol component (A) comprises at least one polyacrylate polyol (A1) obtained from monomers of hydroxyalkyl(meth)acrylate monomers (a1) and (substituted) cycloaliphatic (meth)acrylate monomers (a4), the polyacrylate polyol (A1) having a Mn of between 500 and 2,000 Dalton and a Mw of between 800 and 4,000 Dalton. The crosslinkable composition comprises the polyol component (A) and a crosslinker (C) comprising functional groups reactable with polyacrylate polyol (A1). The crosslinkable composition is especially suitable for clear coat and top coat applications.
    Type: Application
    Filed: May 7, 2021
    Publication date: June 15, 2023
    Applicant: ALLNEX RESINS (CHINA) CO., LTD.
    Inventors: Jun LIU, Haibo XU, Elwin DE WOLF, Shunan DAI, Yuzhu FU
  • Publication number: 20230026705
    Abstract: A particulate polyurea compound a2) for reducing gloss of coatings, a resin composition and a crosslinkable composition comprising the particulate polyurea compound is provided, wherein the volume percentage of particles of the particulate polyurea compound having a diameter of smaller than 10 ?m is equal or less than 40%, and the volume percentage of the polyurea product having a diameter larger than 20 ?m is equal or more than 11%.
    Type: Application
    Filed: December 17, 2020
    Publication date: January 26, 2023
    Applicant: Allnex Netherlands B.V.
    Inventors: Elwin DE WOLF, Bart NOORDOVER, Francesca FALLANI, Sharon MAAS, Ronald KOEKEN
  • Publication number: 20210292465
    Abstract: The present invention relates to a polyol component comprising a1) a polyol having a weight averaged molecular weight Mw of from 1,000 to 4,000 Dalton, a number averaged molecular weight Mn of from 600 to 2,500 Dalton, an OH value between 80 and 300 mg KOH/g of resin and a glass transition temperature Tg of from ?10 to 90° C., and a2) between 0.1 and 10% by weight of polyurea product as rheological agent, as well as it use in a crosslinkable composition especially suitable for clear coat applications.
    Type: Application
    Filed: November 5, 2019
    Publication date: September 23, 2021
    Applicant: ALLNEX NETHERLANDS BV
    Inventors: Elwin DE WOLF, Marinus GOEDEGEBUURE