Hydrogenation of molten aldehydic dimethyl terephthalate

Details Hydrogenation of molten aldehydic dimethyl terephthalate Hydrogenation of molten aldehydic dimethyl terephthalate

1974-01-02

1978-02-28

Myers, Jane S.

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

Organic compounds

Carboxylic acid esters

C07C 6748, C07C 6982

Patent

active

040769461

ABSTRACT:
Disclosed is a process for the catalytic hydrogenation of the aldehyde content of molten aldehydic dimethyl terephthalate (DMT). The process comprises first dissolving in the molten aldehydic DMT a quantity of molecular hydrogen sufficient to hydrogenate at least a substantial portion of the aldehydic content, and then contacting the molten aldehydic DMT with its dissolved hydrogen content with a hydrogenation catalyst for a period of time sufficient for reaction of the dissolved hydrogen with the aldehydic content to take place, but insufficient for substantial ring hydrogenation to occur.

REFERENCES:
patent: 3666791 (1972-05-01), Chikawa et al.
patent: 3803003 (1974-04-01), Matsuzawa et al.
patent: 3803212 (1974-04-01), Winnick et al.
Groggins, Unit Processes in Organic Synthesis, 5th Ed., pp. 599,600 and 608-611 (1952).

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