Patents by Inventor Semeon Tsipsursky

Semeon Tsipsursky 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).

  • Intercalates and exfoliates formed with oligomers and polymers and composite materials containing same
    Patent number: 5552469
    Abstract: Exfoliated layered silicate material derived from intercalates formed by contacting the layer material, e.g., a phyllosilicate, with an intercalant polymer to sorb or intercalate the polymer between adjacent platelets of the layered material. Sufficient intercalant polymer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 10 .ANG. (as measured after water removal), up to about 100 .ANG. and preferably in the range of about 30-45 .ANG., so that the intercalate easily can be exfoliated, e.g., when mixed with a thermoplastic or thermosetting matrix polymer melt, to provide a matrix polymer/platelet nanocomposite material--the platelets being exfoliated from the intercalate.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 3, 1996
    Assignee: AMCOL International Corporation
    Inventors: Gary W. Beall, Semeon Tsipsursky, Anatoliy Sorokin, Anatoliy Goldman