Patent · US Expired

Separating indene from unsaturated alkylaromatics

US4280881A · kind A · utility

9Cited by
8References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 2, 1980
Grant dateJul 28, 1981
Priority date
Expiry dateJul 2, 2000

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C7/08
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Indene is separated from close boiling, olefinically unsaturated alkylaromatic compounds by extractive distillation. For example, indene is separated from trans-.beta.-methylstyrene, and from 2-, 3- and 4-methylstyrene by extractive distillation using 1-methyl-2-pyrrolidone as the extracting agent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.