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