Method for preparation of alkyl glycolates

Details Method for preparation of alkyl glycolates Method for preparation of alkyl glycolates

1988-01-25

1989-04-25

Gray, Bruce D.

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

Organic compounds

Carboxylic acid esters

562518, C07C 6966

Patent

active

048249971

ABSTRACT:
A method of carbonylation of formaldehyde is disclosed. In the method, an aqueous formaldehyde concentrate comprising between about 60% by weight and about 85% by weight formaldehyde, carbon monoxide and sulfuric acid are brought together in the absence of an effective amount of added Group IB cocatalyst in a reaction zone under a carbon monoxide partial pressure in the reaction zone of not greater than about 1.72.times.10.sup.7 N/M.sup.2. A carbonylation reaction is thereby effected in which a carbonylation product is produced comprising at least about 2% by weight sulfuric acid and a mixture of compounds of the formula:

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patent: 4136112 (1979-01-01), Bakshi
patent: 4431486 (1984-02-01), Balmat

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