Patent · US Expired

Process for making hexamethylene diamine using ozone-treated adiponitrile that contains phosphorous compounds

US6331651A · kind A · utility

8Cited by
0References
2Claims
0Family size

Assignee

Inventor

Key dates

Filing dateApr 20, 2001
Grant dateDec 18, 2001
Priority date—
Expiry dateApr 20, 2021

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C209/48
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

A process for making HMD in which a butadiene hydrocyantion reaction product that contains phosphorous-containing impurities is treated with ozone.

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