Basic aluminum salts of acylamino-aliphatic mono-and polycarboxylic acids and a process for preparing same

Claim 1

IN A PROCESS FOR PREPARING DIHYDROXY ALUMINUM SALTS OF ALIPHATIC HYDROXY- AND ACYLAMINO-MONO- AND POLY CARBOXYLIC ACIDS HAVING AN EVEN NUMBER OF CARBON ATOMS IN THE RANGE OF 2 TO 6 INCLUSIVE, CONTAINING ONE ATOM OF ALUMINUM FOR EACH FREE CARBOXYLIC GROUP OFTHE CORRESPONDING CARBOXYLIC ACID, THE STEPS OF HEATING FRESHLY PRECIPITATED ALUMINUM HYDROXIDE WITH AN AQUEOUS SOLUTION OF CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROXY CARBOXYLIC ACIDS AND ALIPHATIC ACYLAMINO CARBOXYLIC ACIDS, SAID HYDROXY CARBOXYLIC ACIDS CONTAINING NOT MORE THAN ONE HYDROXYL GROUP PER CARBOXYLIC GROUP, AND SAID ACYLAMINO CARBOXYLIC ACIDS CONTAINING NOT MORE THAN ONE ACLYLAMINO GROUP PER CARBOXYL GROUP WHILE STIRRING, THEN BOILING THE REACTION MIXTURE.