Patents by Inventor Daniele Dussoubs

Daniele Dussoubs 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 preparation of polyacetylenes by dehydrochlorination of polyvinyl chloride, the products obtained and their applications, in particular, as semiconductors
    Patent number: 4565848
    Abstract: In this process for the dehydrochlorination of polyvinyl chloride by potassium tertiary butoxide in anhydrous tetrahydrofuran medium, the number of moles of tertiary butoxide reacted is greater than the number of CH.sub.2 CHCl units of polyvinyl chloride, this excess being directly related to the presence of oxygen in the anhydrous tetrahydrofuran and leading to a practically complete dehydrochlorination.Polyacetylenes are thus obtained the UV spectrum of which has a maximum wavelength around 450 nm and the IR spectrum of which has, in addition to the characteristic polyacetylene band at 1020 and 3020 cm.sup.-1, the characteristic highly conjugated double bond (C.dbd.C) band at 1600 cm.sup.-1 ; under certain well determined conditions and in the presence of traces of oxygen, products which are close to polyacetylene and which are soluble in polar solvents are obtained.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: January 21, 1986
    Assignee: Universite d'Aix-Marseille II
    Inventors: Daniele Dussoubs, Alain Perichaud, Louis Savidon