Process for the preparation of alkenylated dicarboxylic acid lac

Details Process for the preparation of alkenylated dicarboxylic acid lac Process for the preparation of alkenylated dicarboxylic acid lac

1976-10-26

1979-05-08

Milestone, Norma S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603436, C07D30930, C07D30732

Patent

active

041536169

ABSTRACT:
An improvement in a process for the preparation of alkenyldicarboxylic acid lactones by alkenylation of maleic anhydride or other C.sub.4 H.sub.2 O.sub.3, C.sub.5 H.sub.4 O.sub.3, or C.sub.6 H.sub.6 O.sub.3 alkendioic anhydrides or their corresponding acids wherein the unsaturation is conjugated with at least one carboxy group with olefins having a molecular weight from about 200 to 3000 whereby alkenyldicarboxylic acids or its anhydrides is formed together with a sludge and is thereafter subjected to lactonization or hydrolysis-lactonization in the presence of a catalyst and in the presence of at least a portion of the sludge.

REFERENCES:
patent: 3155685 (1964-11-01), Prill et al.
patent: 3155686 (1964-11-01), Prill et al.
patent: 3248187 (1966-04-01), Bell
patent: 3267062 (1966-08-01), Prill et al.

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