Patent · US Active

Processes for producing ethylene glycol from oxalate(s)

US8178734B2 · kind B2 · utility

0Cited by

10References

19Claims

0Family size

Assignees

CHINA PETROLEUM & CHEMICAL CORPORATION · CN
SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC · CN

Inventors

Juntao Liu · Lo Wu, CN
Weimin Yang · Shanghai, CN
Fengxia Sun · Shanghai, CN
Siqing Zhong · Shanghai, CN
Wanmin Wang · Shanghai, CN

Key dates

Filing date	Dec 18, 2009
Grant date	May 15, 2012
Priority date	—
Expiry date	Aug 4, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Provided are processes for producing ethylene glycol from oxalate(s), wherein two or more reaction zones in series are used, and oxalate feedstock is fed stagewise, or hydrogen feedstock and optionally a solvent are fed stagewise. The present processes achieve higher selectivity for the product and improved stability of catalysts.

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