公开(公告)号：DE1518552A1

公开(公告)日：1969-07-03

申请号：DE1518552

申请日：1965-05-14

Applicant: BASF AG

Inventor： HORST GOETZ DR ,  HUBERT SUTER DR ,  FRIEDRICH BRUNNMUELLER DR ,  ALBERT PALM DR

IPC: C07C61/28 ,  C07C61/26

Abstract: 1,139,311. Chlorendic acid. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 May, 1966 [14 May, 1965], No. 21255/66. Heading C2C. In the manufacture of chlorendic acid [1,4,5, 6,7,7 - hexachlorobicyclo - (2,2,1) - 5 - heptene- 2,3-dicarboxylic acid] by reacting hexachlorocyclopentadiene with maleic anhydride at atmospheric, reduced or raised pressure and hydrolysing the product, the reagents are fed continuously into a reactor kept at a temperature of 120-200‹ C. in which they remain for 2-7 hours, whereafter the product is allowed to flow into water at a temperature of at least 70‹ C., the solution is treated first with superheated steam, to remove chlorohydrocarbons, and then with a fatty acid of 1-3 carbon atoms, or a chloro-derivative of such an acid, and finally, the solution is cooled to crystallize the product. No solvent need be used. Examples are given, and apparatus is described.