BLANDNING AV GRENADE MONOKARBOXYLSYROR SAMT SETT FOR DESS FRAMSTELLNING

摘要

The mixtures of the acids of the formula (I) or (Ia) - the symbols are defined in Claim 1 - contain the individual acids, classified according to the numerical value of n or m and n', in the following amounts: 1) n = 1 : 10 to 40% n = 2 : 15 to 35% n = 3 : 30 to 10% n = 4 : 25 to 10% and n = 5 : 20 to 5% and 2) m = 1 and n' = 1 : 10 to 15% m = 1 and n' = 2 : 20 to 30% m = 1 and n' = 3 : 15 to 20% m = 2 and n' = 2 : 25 to 30% and m = 2 and n' = 3 : 15% The acid mixtures are used in the form of their heavy metal salts as siccatives; they have the advantage that the theoretical metal content is achieved. They can also be used for separating metal cations from solutions. These mixtures are obtained by free radical teleomerisation of acids (R2)2CHCOOH or R1CH2COOH (R1 = C1-C4-alkyl, R2 = CH3 or n-butyl) with gamma -olefins CH3CH=CH2 or C2H5CH=CH2 in a molar ratio of carboxylic acid : olefin of from 1 : 0.3 to 1 : 1.5 at from 150 to 180 DEG C in the presence of from 1 to 5% of peroxide initiator. This is followed by customary working up.