Process for purifying dimethyl-2,6-naphthalene dicarboxylate

Details Process for purifying dimethyl-2,6-naphthalene dicarboxylate Process for purifying dimethyl-2,6-naphthalene dicarboxylate

1991-03-14

1992-12-08

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

562486, 562487, C07C 6748

Patent

active

051699770

ABSTRACT:
A process for purifying crude 2,6-naphthalene dimethyl dicarboxylate (hereinunder referred to as 2,6-NDM) which comprises dissolving the crude 2,6-NDM into a C.sub.6 -C.sub.9 aromatic hydrocarbon, then contacting the solution of 2,6-NDM and the hydrocarbon with an hydrotalcite-like laminar crystalline compound and activated carbon, then carrying out thermal filtration of the solution, and then cooling the solution to separate 2,6-NDM crystal from the solution is disclosed.

REFERENCES:
patent: 3517053 (1970-06-01), Antonsen
patent: 4048021 (1977-09-01), Takamoto et al.
patent: 4886901 (1989-12-01), Holzhauer et al.
Chemical Abstracts, vol. 112, No. 11, Mar. 2, 1990, Columbus, Ohio USA, 98237m.

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