| 主权项 |
1. A composition comprising a mixture of at least two compounds of Formula I: wherein each R1 independently is H or CH3, with the proviso that 1, 2, or 3 R1 is CH3; m is 1 or 2; n is 3, 4, 5, 6, 7, 8, or 9; p is 1, 2, 3, 4, 5, 6, 7, or 8; and, Y is CH2 or absent, with the proviso that when: (a) Y is CH2, Z is selected from the group consisting of hydroxyl, a sulfate, or a sulfonate; and, (b) Y is absent, Z is a carboxylic acid; wherein at least one compound of Formula I is selected from the group consisting of: wherein: r is 2, 3, 4, 5, 6, 7, or 8; s is 1, 2, 3, 4, 5, 6, or 7; t is 0, 1, 2, 3, 4, 5, or 6; u is 0, 1, 2, 3, 4, or 5; v is 0, 1, 2, 3, or 4; and, w is 0, 1, 2, or 3; wherein the mixture is present in an amount of at least about 80 wt. %, based on the total weight of the composition; wherein the mixture comprises no more than about 5 wt. % of compounds that have a longest linear carbon chain of 9 carbon atoms or fewer, and less than about 50 wt. % of compounds of Formula I that contain branching on a carbon atom that is within 40% of the nonfunctionalized terminus of the longest carbon chain, based on the total weight of the mixture, and; wherein the mixture further comprises at least one compound of Formula III: wherein q is 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20; p is 1 or 2; Y is CH2 or absent, with the proviso that when: (a) Y is CH2, Z is selected from the group consisting of hydroxyl, a sulfate, or a sulfonate; and, (b) Y is absent, Z is a carboxylic acid; wherein the compound of Formula III is present in an amount of about 1 wt. % to about 99 wt. %, based on the total weight of the mixture. |
