Patent · US Expired

Bis-quinizarin compounds

US4313887A · kind A · utility

0Cited by
1References
4Claims
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Assignee

Inventors

Key dates

Filing dateOct 29, 1980
Grant dateFeb 2, 1982
Priority date—
Expiry dateOct 29, 2000

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09B1/547
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Bis-quinizarin compounds are disclosed. They have the structure: ##STR1## where X is ##STR2## --CF.sub.2 --, or a bond.

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