Patents by Inventor Henricus C. M. Timmermans

Henricus C. M. Timmermans 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 preparation of modified polyphenylene ether or related polymers and the use thereof in modified high temperature rigid polymer of vinyl substituted aromatics
    Patent number: 5304600
    Abstract: Process for the manufacture of modified polyphenyl ether or structurally related polymers comprising the reaction of said compound with a para substituted phenylsulphonyl halide, in the presence of a substituted pyridine derivative as catalyst and an acid neutralizing agent, and in a vinyl substituted aromatic monomer as solvent; modified polyphenylene ethers or structurally related polymers so obtained and use of them for the manufacture of modified high temperature rigid poly(vinyl substituted aromatic) polymer compositions.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: April 19, 1994
    Assignee: Shell Research Limited
    Inventors: Laurentius N. I. H. Nelissen, Henricus C. M. Timmermans, Johannes M. Zijderveld