Patents by Inventor Enrico Richardus August RENSEN

Enrico Richardus August RENSEN 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).

  • Process for the preparation of a thixotropic composition
    Patent number: 11261284
    Abstract: The invention relates to a process for the preparation of a thixotropic composition comprising polyurea particles, said process comprising contacting and reacting in a liquid medium reactants to form a polyurea and precipitating the polyurea to form polyurea particles, wherein acoustic vibration is applied during contacting of the reactants or as a post-treatment on the formed polyurea particles or both. The invention further relates to a thixotropic composition obtainable by the process, in particular thixotropic composition comprising high amounts of polyurea particles and optionally a polymer resin having high thixotropic efficiency. The compositions can be used, in particular as a masterbatch, in preparation of i.a. coating compositions.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: March 1, 2022
    Assignee: ALLNEX NETHERLANDS B.V.
    Inventors: Martin Bosma, Petrus Johannes Maria David Elfrink, Enrico Richardus August Rensen, Richard Hendrikus Gerrit Brinkhuis
  • A PROCESS FOR THE PREPARATION OF A THIXOTROPIC COMPOSITION
    Publication number: 20200048398
    Abstract: The invention relates to a process for the preparation of a thixotropic composition comprising polyurea particles, said process comprising contacting and reacting in a liquid medium reactants to form a polyurea and precipitating the polyurea to form polyurea particles, wherein acoustic vibration is applied during contacting of the reactants or as a post-treatment on the formed polyurea particles or both. The invention further relates to a thixotropic composition obtainable by the process, in particular thixotropic composition comprising high amounts of polyurea particles and optionally a polymer resin having high thixotropic efficiency. The compositions can be used, in particular as a masterbatch, in preparation of i.a. coating compositions.
    Type: Application
    Filed: November 7, 2017
    Publication date: February 13, 2020
    Applicant: ALLNEX Netherlands B.V.
    Inventors: Martin BOSMA, Petrus Johannes Maria David ELFRINK, Enrico Richardus August RENSEN, Richard Hendrikus Gerrit BRINKHUIS