Patents by Inventor Arpad Rehak

Arpad Rehak 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 producing polymers with a polydispersity optionally approaching the theoretical one and substituted by functional groups in .alpha., .omega.-positions, by radical polymerization
    Patent number: 5126415
    Abstract: The invention relates to a process for preparing polymers, with a polydispersity optionally approaching the theoretical polydispersity and substituted by functional groups in .alpha.,.omega.-positions, via radical polymerization of radically polymerizable monomers and using one or more initiators. In compliance with this process the degree of polymerization is maintained at the desired value by continuous elevation of the temperature.In case of a given heat program, the process of the invention renders possible to increase the conversion in producing polymers without the deterioration of the polydispersity.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: June 30, 1992
    Assignee: MTA Kozponti Kemiai Kutato Intezete
    Inventors: Tamara Foldes nee Berezsnich, Gyorgyi Miketa nee Fenyvesi, Andras Nagy, Tibor Pernecker, Arpad Rehak, Daniel Szalay, Ferenc Tudos