Patent ID: 7816553

Claim:
Surface-active compositions selected from defoamers, antifoams, and emulsifiers comprising 1,2-cyclohexanedicarboxylic acid esters selected from the group consisting of 1,2-diisobutylcyclohexanedicarboxylic acid ester, 1,2-di-(2-ethylhexyl)-cyclohexanedicarboxylic acid ester and 1,2-diisononylcyclohexanedicarboxylic acid ester, wherein at least one 1,2-cyclohexanedicarboxylic acid ester is 1,2-diisononylcyclohexanedicarboxylic acid ester wherein the proportion of the at least one 1,2-cyclohexanedicarboxylic acid ester is 0.1 to 5% by weight and wherein a nonanol mixture used for preparation of the 1,2-diisononylcyclohexanedicarboxylic acid ester has the following composition: A. from 1.73 to 3.73% by weight of 3-ethyl-6-methylhexanol; from 0.38 to 1.38% by weight of 2,6-dimethylheptanol; from 2.78 to 4.78% by weight of 3,5-dimethylheptanol; from 6.30 to 16.30% by weight of 3,6-dimethylheptanol; from 5.74 to 11.74% by weight of 4,6-dimethylheptanol; from 1.64 to 3.64% by weight of 3,4,5-trimethylhexanol; from 1.47 to 5.47% by weight of 3,4,5-trimethylhexanol, 3-methyl-4-ethylhexanol, and 3-ethyl-4-methylhexanol; from 4.00 to 10.00% by weight of 3,4-dimethylheptanol; from 0.99 to 2.99% by weight of 4-ethyl-5-methylhexanol, and 3-ethylheptanol; from 2.45 to 8.45% by weight of 4-dimethylheptanol and 3-methyloctanol; from 1.21 to 5.21% by weight of 4,5-dimethylheptanol; from 1.55 to 5.55% by weight of 5,6-dimethylheptanol; from 1.63 to 3.63% by weight of 4-methyloctanol; from 0.98 to 2.98% by weight of 5-methyloctanol; from 0.70 to 2.70% by weight of 3,6,6-trimethylhexanol; from 1.96 to 3.96% by weight of 7-methyloctanol; from 1.24 to 3.24% by weight of 6-methyloctanol; from 0.1 to 3% by weight of n-nonanol; from 25 to 35% by weight of other alcohols having 9 or 10 carbon atoms, and wherein the entirety of the components mentioned giving 100% by weight or B. from 6.0 to 16.0% by weight of n-nonanol; 12.8 to 28.8% by weight of 6-methyloctanol; 12.5 to 28.8% by weight of 4-methyloctanol; 3.3 to 7.3% by weight of 2-methyloctanol; 5.7 to 11.7% by weight of 3-ethylheptanol; 1.9 to 3.9% by weight of 2-ethylheptanol; 1.7 to 3.7% by weight of 2-propylhexanol; 3.2 to 9.2% by weight of 3,5-dimethylheptanol; 6.0 to 16.0% by weight of 2,5-dimethylheptanol; 1.8 to 3.8% by weight of 2,3-dimethylheptanol; 0.6 to 2.6% by weight of 3-ethyl-4-methylhexanol; 2.0 to 4.0% by weight of 2-ethyl-4-methylhexanol; 0.5 to 6.5% by weight of other alcohols having 9 carbon atoms; and wherein the entirety of the components mentioned gives 100% by weight.