Process for producing liquid dibasic acid anhydrides

Details Process for producing liquid dibasic acid anhydrides Process for producing liquid dibasic acid anhydrides

1979-12-19

1981-08-11

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30789

Patent

active

042833434

ABSTRACT:
A dibasic acid anhydride which is liquid at 0.degree. C., or even at -20.degree. C., is produced by heat-treating in the presence of a stereoisomerization catalyst a structural isomeric mixture obtained by shifting the double bond of methyl-tetrahydrophthalic anhydride. The liquid dibasic acid anhydride is useful as a curing agent for epoxy resins.

REFERENCES:
patent: 2764597 (1956-09-01), Barney
patent: 2959599 (1960-11-01), Bailey
patent: 3470132 (1969-09-01), Ernst et al.
patent: 3470214 (1969-09-01), Young
patent: 3647701 (1972-03-01), Robinson et al.
Beilstein, Third & Fourth Compilation, vol. 17 (1975), pp. 6001-6003.

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