Patents by Inventor Bob Heinis

Bob Heinis 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 preparing polymer polyols
    Patent number: 8017664
    Abstract: The invention relates to a process for the batch or semi-batch preparation of a polymer polyol, which process involves (1) preparing a seed by polymerizing in a base polyol at least one ethylenically unsaturated monomer in the presence of a polymerization initiator and macromer, and in the presence of from 0.5 to 50% wt of polymer polyol heel, based on amount of polymer present in the heel compared with total amount of polymer formed, (2) adding additional ethylenically unsaturated monomer to the seed obtained in step (1) and optionally additional polyol, and (3) polymerizing the mixture obtained in step (2).
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: September 13, 2011
    Assignee: Shell Oil Company
    Inventors: Bob Heinis, Willem Karzijn, Martien Krijger, Martinus Johannes Maria Lelieveld
  • Process for preparing polymer polyols
    Publication number: 20030220410
    Abstract: The invention relates to a process for the batch or semi-batch preparation of a polymer polyol, which process involves (1) preparing a seed by polymerizing in a base polyol at least one ethylenically unsaturated monomer in the presence of a polymerization initiator and macromer, and in the presence of from 0.5 to 50 % wt of polymer polyol heel, based on amount of polymer present in heel compared with total amount of polymer present, (2) adding additional ethylenically unsaturated monomer to the seed obtained in step (1) and optionally additional polyol, and polymerizing the mixture obtained in step (2).
    Type: Application
    Filed: May 14, 2003
    Publication date: November 27, 2003
    Inventors: Bob Heinis, Willem Karzijn, Martien Krijger, Martinus Johannes Maria Lelieveld