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US 11,377,623 B2Granted
Surfactant and detergent containing surfactant
AssigneeSanyo Chemical Industries, Ltd.
InventorsYusuke Araki, Yoshiyuki Wakahara
Life of this patent
Estimating the term…
Abstract
A surfactant (a) having a critical micelle concentration (CMC) of 0.10 g/L or lower, represented by formula (1): R1—[—O-(A1O)n—H]m (1), wherein R1 is a C7-C20 hydrocarbon group having a valence number of m; m is an integer of 2 to 6; A1 in (A1O)n in each of [—O-(A1O)n—H]m is each independently a C2-C4 alkylene group; n in [—O-(A1O)n—H]m is each independently an integer of 1 to 100; and the sum of n in [—O-(A1O)n—H]m is 13 or greater.
Claims4
A detergent comprising:
- a surfactant (a) having a critical micelle concentration (CMC) of 0.10 g/L or lower, represented by formula (1):
- R1—[—O-(A1O)n—H]2 (1),
- wherein R1 is a C7-C20 hydrocarbon group having a valence number of 2;
- A1 in (A1O) in each of [—O-(A1O)n—H]2 is a combination of an ethylene group and at least one group selected from the group consisting of a 1,2-propylene group, a 1,2-butylene group, a 1,3-butylene group and a 2,3-butylene group;
- n in [—O-(A1O)n—H]2 is each independently an integer of 1 to 100;
- and the sum of n in [—O-(A1O)n—H]2 is 13 or greater;
- and
- a surfactant (b) represented by formula (2):
- R2—X-(A2O)p—H (2)
- wherein R2 is a C10-C18 monovalent hydrocarbon group;
- X is —COO— or —O—;
- A2 is each independently a C2-C4 alkylene group;
- and p is an integer of 1 to 30.
10 more elements
Dependencies are inferred from the claim text.