Preparation of pure 2,2-dimethyl-1,3-propanediol

Details Preparation of pure 2,2-dimethyl-1,3-propanediol Preparation of pure 2,2-dimethyl-1,3-propanediol

1987-09-01

1989-03-21

Evans, J. E.

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

Organic compounds

Oxygen containing

C07C 2974, C07C 3120

Patent

active

048145092

ABSTRACT:
Crude 2,2-dimethyl-1,3-propanediol (NPG) is distilled in the presence of sulfuric acid, phosphoric acid or a mixture thereof, with the pH value being set between 6.5 and 7.5, preferably between 6.9 and 7.1 to prepare pure 2,2-dimethyl-1,3-propanediol.

REFERENCES:
patent: 2292926 (1942-08-01), Brubaker et al.
patent: 2333696 (1943-11-01), Bludworth
patent: 2400724 (1946-05-01), Walker
patent: 2778858 (1957-01-01), Meinhofer
patent: 2865819 (1958-12-01), Hagemeyer et al.
patent: 4250337 (1981-02-01), Hausen et al.

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