Process for the preparation of alkylene glycols

Details Process for the preparation of alkylene glycols Process for the preparation of alkylene glycols

2006-08-29

2006-08-29

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S680000

Reexamination Certificate

active

07098367

ABSTRACT:
Disclosed is a process for the preparation of alkylene glycols from the corresponding alkylene oxide, such as ethylene glycol from ethylene oxide, in the presence of water, a catalyst and, optionally, carbon dioxide. The catalyst contains amines which are weak bases, specifically having pKaof at least 5.5, preferably 8 to 11. The amines may be primary, secondary, tertiary or a blend thereof or may be a compound having a structural combination of primary, secondary and/or tertiary amines.

REFERENCES:
patent: 4243759 (1981-01-01), Haas
patent: 4307256 (1981-12-01), Cipriani et al.
patent: 4393254 (1983-07-01), Johnson et al.
patent: 4521548 (1985-06-01), Christen et al.
patent: 6137015 (2000-10-01), Strickler et al.
John H. Biel; Antihistaminics. I. Some Ethylene Diamines and an Aminoether; J. Am. Chem. Soc., vol. 71, issue 4, p. 1306-1309 (Apr. 1949).

Affiliated with

Also associated with

Rating

Process for the preparation of alkylene glycols does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of alkylene glycols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of alkylene glycols will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3638571