Continuous hydrolysis process for preparing 2-hydroxy-4-methylth

Details Continuous hydrolysis process for preparing 2-hydroxy-4-methylth Continuous hydrolysis process for preparing 2-hydroxy-4-methylth

1996-05-21

1999-01-05

Geist, Gary

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

Organic compounds

Carboxylic acids and salts thereof

562580, C07C38100, C07C 5142

Patent

active

058565671

ABSTRACT:
A continuous process for the preparation of 2-hydroxy-4-methylthiobutanoic acid or a salt thereof which includes introducing an aqueous mineral acid into a nitrile hydrolysis reactor including a continuous stirred tank reactor and introducing 2-hydroxy-4-methylthiobutanenitrile into the nitrile hydrolysis reactor. 2-hydroxy-4-methylthiobutanenitrile is continually hydrolyzed within the nitrile hydrolysis reactor to produce a nitrile hydrolysis reactor product stream containing 2-hydroxy-4-methylthiobutanamide. The nitrile hydrolysis reactor product stream is continuously introduced into an amide hydrolysis flow reactor. 2-hydroxy-4-methylthiobutanamide is continually hydrolyzed within the amide hydrolysis flow reactor to produce an aqueous hydrolyzate product containing 2-hydroxy-4-methylthiobutanoic acid. 2-hydroxy-4-methylthiobutanoic acid is recovered from the aqueous hydrolyzate product.

REFERENCES:
patent: 2432429 (1947-12-01), Lecky
patent: 2432478 (1947-12-01), Lecky
patent: 2443391 (1948-06-01), Kirkpatrick
patent: 2485236 (1949-10-01), Gresham et al.
patent: 2542768 (1951-02-01), Gresham et al.
patent: 2557920 (1951-06-01), White
patent: 2564105 (1951-08-01), Gresham et al.
patent: 2642459 (1953-06-01), White
patent: 2676190 (1954-04-01), Bernard et al.
patent: 2688038 (1954-08-01), Merner
patent: 2946818 (1960-07-01), Anagnostopoulos
patent: 4064159 (1977-12-01), Labat et al.
patent: 5583243 (1996-12-01), Abdel-Monem
Denbigh, "Chemical Reactor Theory," 1965, pp. 38-124.
Trambouze et al., A.I.Ch.E. Journal, "Continuous Stirred Tank Reactors," Sep. 1959, vol. 5, pp. 384-390.

Affiliated with

Also associated with

Rating

Continuous hydrolysis process for preparing 2-hydroxy-4-methylth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous hydrolysis process for preparing 2-hydroxy-4-methylth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous hydrolysis process for preparing 2-hydroxy-4-methylth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-864305