Sulfur-based adduct and compositions containing the adduct
AssigneePennzoil Company
InventorsLouis E. Kidwell, Jr., Dysart E. Holcomb
Life of this patent
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Abstract
A novel sulfur-based adduct formed by reacting sulfur with a diene-containing by-product hydrocarbon mixture available from petrochemical operations and/or from coal processing. The adduct is a reaction product of sulfur and each of the dienes contained in the by-product mixture. Also disclosed is a road surface composition containing this adduct as an asphalt extender or as a replacement for asphalt, and there are also disclosed other compositions containing this adduct such as sulfur cements, sulfur concretes, coatings, foams, structural materials and insulators.
Claims32
A sulfur-based adduct produced by (a) reacting at a temperature of about 100.degree.-150.degree. C., a composition comprising (1) about 10-90 wt.% of sulfur and (2) about 90-10 wt.% of a by-product hydrocarbon mixture comprising about 45-98 wt.% of aromatic, non-pseudodiene compounds, about 1-30 wt.% of diene and pseudodiene compounds, about 0-15 wt.% of other organic compounds that are substantially unreactive with sulfur and up to about 54 wt.% of unidentified compounds;
- whereby the sulfur reacts with each of the diene and pseudodiene compounds in said mixture;
- and (b) removing unreacted material from the reaction product.
A process for producing a sulfur-based adduct, said process comprising the steps of
- (a) reacting at a temperature of about 100.degree.-150.degree. C., a composition comprising (1) about 10-90 wt.% of sulfur and (2) about 90-10 wt.% of a by-product hydrocarbon mixture comprising about 45-98 wt.% of aromatic, non-pseudodiene compounds, about 1-30 wt.% of diene and pseudodiene compounds, about 0-15 wt.% of other organic compounds that are substantially unreactive with sulfur and up to about 54 wt.% of unidentified compounds;
- whereby the sulfur reacts with each of the diene and pseudodiene compounds in said mixture;
- and
- (b) removing unreacted material from the reaction product.
Dependencies are inferred from the claim text.