Patent · US Expired

Two-stage process for the production of 1,3-propanediol by catalytic hydrogenation of 3-hydroxypropanal

US6297408A · kind A · utility

33Cited by

2References

10Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Thomas Haas · Munster, DE
Bernd Jaeger · Emmelshausen, DE
Joerg Sauer · Rodenbach, DE
Willi Hofen · Rodenbach, DE
Rudolf Vanheertum · Alzenau, DE

Key dates

Filing date	Mar 2, 2001
Grant date	Oct 2, 2001
Priority date	—
Expiry date	Mar 2, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C29/141
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A two-stage process for producing 1,3-propanediol by first hydrogenating at a temperature of 30.degree. C. to 80.degree. C. in the presence of an oxide-supported metal hydrogenation catalyst. Second, the resulting reaction solution is hydrogenated at a temperature of 80.degree. C. to 180.degree. C. to a 3-hydroxypropanal conversion of substantially 100% in the presence of an activated carbon-supported metal hydrogenation catalyst.

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