Method for the production of alicyclic polycarboxylic acid esters from partial esters of aromatic polycarboxylic acids
First Claim
Patent Images
1. A process for preparing cycloaliphatic polycarboxylic esters, which comprises:
- a) hydrogenating a partial ester of the corresponding aromatic polycarboxylic acid or of the corresponding aromatic polycarboxylic anhydride whose carboxylic acid or anhydride groups have been partially esterified with at least one branched or unbranched alkyl, cycloalkyl, and/or alkoxyalkyl alcohol having from 3 to 15 carbon atoms, andb) reacting the resultant cycloaliphatic partial ester with at least one branched or unbranched alkyl, cycloalkyl, and/or alkoxyalkyl alcohol having from 3 to 15 carbon atoms in the presence of a titanium or zirconium catalyst to give a full ester product.
4 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a process for preparing full esters of alicyclic polycarboxylic acids from partial esters of aromatic polycarboxylic acids by hydrogenation of the partial ester followed by esterification of this compound.
-
Citations
12 Claims
-
1. A process for preparing cycloaliphatic polycarboxylic esters, which comprises:
-
a) hydrogenating a partial ester of the corresponding aromatic polycarboxylic acid or of the corresponding aromatic polycarboxylic anhydride whose carboxylic acid or anhydride groups have been partially esterified with at least one branched or unbranched alkyl, cycloalkyl, and/or alkoxyalkyl alcohol having from 3 to 15 carbon atoms, and b) reacting the resultant cycloaliphatic partial ester with at least one branched or unbranched alkyl, cycloalkyl, and/or alkoxyalkyl alcohol having from 3 to 15 carbon atoms in the presence of a titanium or zirconium catalyst to give a full ester product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification