Process for the manufacture of monochloroacetaldehyde trimer and

Details Process for the manufacture of monochloroacetaldehyde trimer and Process for the manufacture of monochloroacetaldehyde trimer and

1994-03-15

1995-05-09

Lone, Werren B.

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

Organic compounds

Oxygen containing

568490, 568495, C07C 4553, C07C 4561

Patent

active

054141397

ABSTRACT:
A process for manufacturing monochloroacetaldehyde trimer and chloral together by effectively utilizing a raw material acetaldehyde or para-aldehyde. The process comprises a step of chlorinating acetaldehyde or para-aldehyde to produce a chlorinated liquid of which the major component is monochloroacetaldehyde, a step comprising adding chloral to said chlorinated liquid and distilling the mixture to obtain a fraction of which the major components are monochloroacetaldehyde and chloral, a step of trimerizing monochloroacetaldehyde by reacting said fraction in the presence of a trimerization catalyst and separating the MCA trimer by filtration, and a step of chlorinating other fractions from said distillation step and the filtrate from said trimerization step to produce chloral. According to this process all raw material aldehydes and components derived from aldehydes which have not been consumed for the production of MCA trimer can be easily converted into chloral which is useful as an industrial chemical. The process is also free from the problem of the waste water treatment.

REFERENCES:
patent: 2768173 (1955-10-01), Wohlers et al.
patent: 2942031 (1960-06-01), Kundiger et al.
patent: 3381036 (1968-04-01), Clark et al.
patent: 5008462 (1991-04-01), Ishizuka et al.
Chemical Abstracts, vol. 116, No. 11, 16 Mar. 1992, Columbus, Ohio, US; Abstract No. 106244, Wakasugi T et al "Preparation of chloroacetaldehyde cyclic trimer and its depolymerization"Abst.
Database WPI Section Ch, Week 8543, Derwent Publications Ltd., London, GB; Class E16, AN 85-266705 & JP-A-60 178 839 (Daicel Chem Ind KK (Dail) Daicel Chem Ind Ltd 12 Sep. 1985 Abstract.
Database WPI Section Ch, Week 9336, Derwent Publications Ltd., London, GB; Class E13, AN 92-285422 & JP-A-5 202 026 (Kureha Chem Ind Co Ltd) 10 Aug. 1993 Abstract.

Affiliated with

Also associated with

Rating

Process for the manufacture of monochloroacetaldehyde trimer and 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 manufacture of monochloroacetaldehyde trimer and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of monochloroacetaldehyde trimer and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1706796