Manufacture of neopentyl glycol (IV)

Details Manufacture of neopentyl glycol (IV) Manufacture of neopentyl glycol (IV)

1993-08-02

1996-07-02

Cook, Rebecca

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

Organic compounds

Oxygen containing

568464, 568862, C07C 2914, C07C 4545, C07C 3120

Patent

active

055324177

ABSTRACT:
Neopentyl glycol is made from isobutyraldehyde and formaldehyde. The formaldehyde may be in the form of paraformaldehyde or aqueous formaldehyde. The aldol reaction product is mixed with a lower alcohol prior to hydrogenation to promote hydrogenolysis and allow recovery of high purity product by simple distillation. In a less preferred mode, the alcohol may be added after hydrogenation, resulting in a smaller improvement over previous processes.

REFERENCES:
patent: 3808280 (1974-04-01), Merger et al.
patent: 4094914 (1978-06-01), Rottig et al.
patent: 4250337 (1981-02-01), zur Hausen et al.
patent: 4855515 (1989-08-01), Morris et al.
patent: 4933473 (1990-06-01), Ninomiya et al.
patent: 5146012 (1992-09-01), Salek et al.

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