Process for producing pentaerythritol

Details Process for producing pentaerythritol Process for producing pentaerythritol

1975-07-03

1976-07-06

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260635P, C07C 2726, C07C 2924

Patent

active

039681769

ABSTRACT:
A process for producing pentaerythritol wherein at least part of a reaction solution which contains pentaerythritol formals is thermally treated in a pH range of 4.5-5.5 at a temperature of 120.degree.-170.degree.C. for 20-120 minutes and the resultant pentaerythritol is separated as crystals. Sodium hydroxide is added to the separated solution to cause sodium formate to crystallize, followed by separation of the crystals. The remaining solution is recirculated to the reaction system for use in the starting reaction solution.

REFERENCES:
patent: 2223421 (1940-12-01), Hubacher et al.
patent: 2939887 (1960-06-01), Maury et al.
patent: 2978514 (1961-04-01), Poynton
patent: 3066171 (1962-11-01), Clunie et al.

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