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US 4,739,018 AGranted
Polycarbon sulphide polymers
AssigneeSociete Nationale Elf Aquitaine
InventorsMichel Armand, Mireille Fouletier, Pierre Degott
Life of this patent
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Abstract
Polycarbon sulphide derivatives comprise units (R.sub.x CS.sub.m).sub.n in which R represents hydrogen, an alkali metal or a transition metal, x is the degree to which R is present in the carbon-sulphur structure, m is the degree of substitution with sulphur and n is the number of units in the polymer chain. As shown by the single figure of the drawing, the insertion of R is reversible.
Claims4
A polycarbon sulphide compound consisting essentially of units of the formula
- (R.sub.x CS.sub.m).sub.n (I)
- of the basic structure ##STR3## wherein:
- R represents a metal selected from the group consisting of lithium, sodium, potassium, silver, copper, zinc and cobalt;
- x represents the degree to which R is present in the carbon-sulphur structure and has a value from 0 to m/valency of the metal, these values being inclusive;
- m represents the degree of substitution with sulphur, with 0.ltoreq.m.ltoreq.1 and
- n represents the number of units in the polymeric carbon chain.
3 more elements
Dependencies are inferred from the claim text.