| PATENT ASSIGNEE'S COUNTRY | Germany |
| UPDATE | 03.99 |
| PATENT ASSIGNEE | Huels (Marl) |
| PATENT CLAIMS |
Mfg process - Saponification of di-Me malonate at 30-100C & 40-1000 mbar catalyzed by acid ion exchanger contg sulfonic acid groups - Distn MeOH - Separating water with aid of organic solvent from malonic acid - Isolating prodt by crystallization |
| PATENT PHOTOCOPY | Available on request |
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