Patents by Inventor Paulina van Schaik-Struykenkamp

Paulina van Schaik-Struykenkamp 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 polymerization of epoxides
    Patent number: 4472560
    Abstract: A process for the polymerization of epoxides using as catalyst a double metal cyanide-type compound is described wherein said process is carried out in the presence of at least(a) one or more salts composed of at least bivalent metal ions and metal-free anions, having a solubility in water of at least 1 g/100 ml at 25.degree. C., and/or(b) one or more non-metal containing acids of which a 0.1 N solution in water at 25.degree. C. has a pH not exceeding 3.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: September 18, 1984
    Assignee: Shell Oil Company
    Inventors: Jan Kuyper, Paulina van Schaik-Struykenkamp