Method for making isobutyric acid

Details Method for making isobutyric acid Method for making isobutyric acid

1983-03-14

1987-03-03

Lone, Werren B.

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

Organic compounds

Carboxylic acids and salts thereof

C07B 5300, C07C 53124

Patent

active

046476962

ABSTRACT:
What is disclosed is a continuous one-step method for the preparation of isobutyric acid or a lower alkyl ester thereof by the Koch synthesis, which method comprises reacting propylene, carbon monoxide, and water or a lower alcohol, in the gaseous and liquid phases, in the presence of hydrogen fluoride as a Koch catalyst, at a temperature between 80.degree. C. and 160.degree. C., at a dwell time of the liquid phase of less than 20 minutes, and with a high degree of backmixing, while maintaining the content of propylene in the reaction mixture at less than one percent by weight of the liquid phase, wherein all or part of the propylene, carbon monoxide, and water or lower alcohol can be replaced by binary addition compounds formed pairwise between these materials. In the alternative, isopropylformiate can be continuously rearranged in the presence of hydrogen fluoride to produce isobutyric acid.

REFERENCES:
patent: 2975199 (1961-03-01), Friedman et al.
patent: 3052698 (1962-09-01), Friedman et al.
patent: 3839428 (1974-10-01), Isogai
patent: 3910963 (1975-10-01), Souma et al.
Koch et al, Ann. Chem., 618, 251-261, 1958.

Affiliated with

Also associated with

Rating

Method for making isobutyric acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making isobutyric acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making isobutyric acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1017774