Stable and non-corrosive polysulphides derived from olefins and having different sulphur contents, process for their manufacture and applications thereof
AssigneeInstitut National de Recherche Chimique Appliquee
InventorsJean Bolle, Andre Dabir
Life of this patent
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Abstract
These polysulphides are derived from at least two olefins and are suitable as lubricating and industrial oil additives. They have a proportion of sulphur of 22 to 45% for a practically zero content of chlorine and a refractive index n.sub.D.sup.20 ranging from 1.515 to 1.580.
Claims3
Stable and non-corrosive polysulphide derived from isobutylene and diisobutylene, suitable as lubricating and industrial oil additive, having a sulphur content from 22 to 45% for a substantially zero content of chlorine and a corresponding refractive index n.sub.D.sup.20 from 1.515 to 1.580, the molecular structure of said polysulphide including residual unsaturations having no rings or sulphur-containing heterocyclic rings, said polysulphide having a molecular weight of 300 to 600, a practically zero ash content and a Luchaire inflammability temperature higher than 90.degree. C.
Dependencies are inferred from the claim text.