Manufacture of neopentyl glycol (iv)

Details Manufacture of neopentyl glycol (iv) Manufacture of neopentyl glycol (iv)

C - Chemistry, Metallurgy

07

C

C07C 31/20 (2006.01) C07C 29/141 (2006.01) C07C 29/38 (2006.01) C07C 45/75 (2006.01)

Patent

CA 2072485

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.

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