Patent · US Expired

Bis-(ortho-aminophenol)-carboxylic acid AB2 monomer

US6541633B1 · kind B1 · utility

2Cited by
2References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 10, 2002
Grant dateApr 1, 2003
Priority date—
Expiry dateJul 10, 2022

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07D241/42
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

An AB2 monomer of the formula: wherein Z is selected from the group consisting of —OH, —SH and —NH2HCl, is useful for the preparation of hyperbranched polybenzoxazoles.

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