Patent · US Expired

Benzoquinoneimines as vinyl aromatic polymerization inhibitors

US6039895A · kind A · utility

1Cited by
9References
10Claims
0Family size

Inventors

Key dates

Filing dateJul 18, 1994
Grant dateMar 21, 2000
Priority date—
Expiry dateJul 18, 2014

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C7/20
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

This invention relates to a vinyl aromatic, especially styrene, polymerization inhibitor system comprising an N-phenyl-1,4-benzoquinoneimine compound and optionally an aryl-substituted phenylenediamine.

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