Patent · US Expired

Ethynyl-substituted aromatic ortho diamines and method of synthesis

US3975444A · kind A · utility

10Cited by
1References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 19, 1975
Grant dateAug 17, 1976
Priority date—
Expiry dateMay 19, 1995

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C323/37
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

As new compositions of matter, ethynyl-substituted aromatic ortho-diamines. The compounds are useful as endcapping agents for thermally stable heterocyclic oligomeric compositions.

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