Patents by Inventor Vera V. Strukova

Vera V. Strukova 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).

  • Composite membrane of a hydrophilic asymmetric membrane coated with an organosiloxane block copolymer
    Patent number: 5296144
    Abstract: An organosiloxane block copolymer having the formula depicted (I) depicted below: ##STR1## wherein: m has a value of 8.0-18.0;n has a value of 1.0-5.0;x has a value of about 0.2 to about 0.7;y has a value of 1 minus the value of x;R is ##STR2## R.sup.1 ##STR3## R.sup.2 is a C.sub.1 -C.sub.5 lower alkylene group; V is a vinyl group; andMe is a methyl group.Preparation of the organosiloxane block copolymer of the above formula (I) by polymerizing .alpha.,w-bis(oxymethyl)polydimethyl-methylvinylsiloxane, and diphenylmethanediisocyanate, and di(oxyethyl)m-toluidine in the presence of a solvent and a catalyst. A composite membrane, which may be used in a pervaporation process, comprising a hydrophilic asymmetric membrane coated with a mixture of an organosiloxane block copolymer, a linking reagent and a catalytically effective amount of a hydrosilylation catalyst.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: March 22, 1994
    Assignee: World Trade Corporation
    Inventors: Larisa F. Sternina, Victor Mikhailovich, Alexander F. Fedotov, Mark I. Shkolnik, Vera V. Strukova