SURFACTANT COMPOSITION

Abstract

The present invention is a surfactant composition containing (a) a branched alkyl sulfosuccinate ester having a branched alkyl group with 9 or 10 carbons and (b) a surfactant [excluding (a)].

Claims

1. A surfactant composition, comprising: component (a): a branched alkyl sulfosuccinate ester having a branched alkyl group with 9 or 10 carbons and component (b): a surfactant other than the component (a).

2. The surfactant composition according to claim 1, wherein the branched alkyl group of the component (a) is a branched alkyl group having a main chain with 6 or 7 carbons and one or more side chains, the side chains having 3 carbons in total.

3. The surfactant composition according to claim 1, wherein the branched alkyl group of the component (a) is a branched alkyl group selected from the group consisting of a 2-propylheptyl group and a 3,5,5-trimethylhexyl group.

4. The surfactant composition according to claim 1, wherein the component (b) is one or more surfactants selected from the group consisting of a nonionic surfactant and an anionic surfactant.

5. The surfactant composition according to claim 1, wherein component (a)/component (b), which is a mass ratio of a content of the component (a) to a content of the component (b), is 0.05 or more and 5 or less.

6. A foaming control agent consisting of: component (a): a branched alkyl sulfosuccinate ester having a branched alkyl group with 9 or 10 carbons for use in a composition comprising a surfactant other than the component (a).

7. A method for controlling foaming performance of a composition comprising a component (b), the method comprising: adding component (a), which is a branched alkyl sulfosuccinate ester having a branched alkyl group with 9 or 10 carbons, to the composition comprising the component (b), wherein the component (b) is a surfactant other than the component (a).

8. The method according to claim 7, wherein the component (b) is one or more surfactants selected from the group consisting of a nonionic surfactant and an anionic surfactant.

9. The method according to claim 7, wherein the component (a) is added such that component (a)/component (b), which is a mass ratio of an addition amount of the component (a) to a content of the component (b) in the composition, is 0.05 or more and 5 or less.

10. The method according to claim 7, wherein the addition of the component (a) improves foamability and/or stabilizes foam.

11. The surfactant composition according to claim 1, further comprising: component (c): one or more water-soluble organic solvents selected from the group consisting of benzyl alcohol, ethanol, propylene glycol, butyldiglycol, and phenoxyethanol.

12. The surfactant composition according to claim 1, wherein the component (a) is a foaming control agent.

13. The method according to claim 7, wherein the composition further comprises: component (c), which is one or more water-soluble organic solvents selected from the group consisting of benzyl alcohol, ethanol, propylene glycol, butyldiglycol, and phenoxyethanol.

14. The method according to claim 7, further comprising: discharging the composition in foam form from a container having a foam discharge mechanism.

Description

EXAMPLES

[0169] The pump foamer container described in FIG. 1 of JP-A 2008-260852 was filled with each of the surfactant compositions in Tables 1 to 3. Here, one mesh with a mesh size of 200 per inch was attached to the foam discharge mechanism. Then, the pump head part at the top of the container was pushed fully three consecutive times, thereby forming 3 g of foam in a 500-ml graduated cylinder. Note that it was pushed fully at a rate of 1 second per push.

[0170] Next, 100 mL of ion exchange water was added to the foam for about 5 seconds from a position 30 cm apart in height through a means for introducing ion exchange water (handmade watering can) placed over the graduated cylinder, and the amount of foam 30 seconds after the addition of water was measured as foamability (initial foam amount). In this evaluation, a foamability of 60 mL or more is preferable. With the point of time when ion exchange water was first added as the start of a test, the addition of 100 mL of ion exchange water was thereafter repeated three more times every minute after the start of the test (the total addition amount of ion exchange water was 400 mL). The amount of foam was measured 30 seconds after the addition of a total of 400 mL of ion exchange water was completed, and a numerical value determined by the following formula was used as foam stability. In this evaluation, a foam stability of 60% or more is preferable.

Foam stability (% )=(amount of foam after addition of 400 mL of ion exchange water/initial foam amount)×100

TABLE-US-00001 TABLE 1 Example Comparative example 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-1 1-2 Surfac- Formu- (a) Sodium bis- 0.25 0.25 0.25 0.25 tant lation (2-propylheplyl) compo- amount sulfosuccinate sition (mass %) Sodium bis- 0.25 0.25 0.25 (3,5,5- trimethylhexyl) sulfosuccinate (a′) Sodium bis- 0.25 0.25 0.25 (2-ethylhexyl) sulfosuccinate Sodium bis- (dodecyl) sulfosuccinate (b) Sodium 0.25 0.25 0.25 polyoxyethylene (average 2.2 mol) lauryl ether sulfale Alkyl glycoside 0.25 0.25 0.25 Polyoxyethylene 0.25 0.25 alkyl ether (c) Butyldiglycol 1 1 1 1 1 1 1 1 1 Water Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- ance ance ance ance ance ance ance ance ance Total 100 100 100 100 100 100 100 100 100 (a)/(b) (mass ratio) 1.0 1.0 1.0 1.0 1.0 1.0 1.0.sup.*1 0 0 pH (25° C.) 6 6 6 6 6 6 6 6 6 Foamability (mL) 110 75 65 80 75 75 75 85 75 Foam stability (%) 77 80 77 69 73 67 67 35 53 Comparative example 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 Surfac- Formu- (a) Sodium bis- 0.5 tant lation (2-propylheplyl) compo- amount sulfosuccinate sition (mass %) Sodium bis- (3,5,5- trimethylhexyl) sulfosuccinate (a′) Sodium bts- 0.25 0.5 (2-ethylhexyl) sulfosuccinate Sodium bis- 0.25 0.25 0.25 (dodecyl) sulfosuccinate (b) Sodium 0.25 0.5 polyoxyethylene (average 2.2 mol) lauryl ether sulfale Alkyl glycoside 0.25 0.5 Polyoxyethylene 0.25 0.25 0.5 alkyl ether (c) Butyldiglycol 1 1 1 1 1 1 1 1 1 Water Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- ance ance ance ance ance ance ance ance ance Total 100 100 100 100 100 100 100 100 100 (a)/(b) (mass ratio) 0 0 0 0 0 0 0 — — pH (25° C.) 6 6 6 6 6 6 6 6 6 Foamability (mL) 80 50 50 70 80 85 60 50 60 Foam stability (%) 50 80 100 57 56 59 8 10 0 .sup.*1In example 1-7, (a)/(b) was given with component (at) as component (b).

TABLE-US-00002 TABLE 2 Example Comparative example 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-1 2-2 Surfac- Formu- (a) Sodium bis- 0.05 0.1 0.2 0.3 0.1 0.5 0.5 0.5 tant lation (2-propylheptyl) compo- amount sulfosuccinate sition (mass %) (a′) Amine oxide 0.1 Sulfobetaine 0.1 (b) Sodium 5 polyoxyethylene (average 2.2 mol) lauryl ether sulfate Alkyl glycoside 0.45 0.4 0.3 0.2 5 0.4 0.4 Polyoxyethylene 0.4 5 alkyl ether (c) Butyldiglycol 1 1 1 1 1 1 1 1 1 1 Water Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- ance ance ance ance ance ance ance ance ance ance Total 100 100 100 100 100 100 100 100 100 100 (a)/(b) (mass ratio) 0.11 0.25 0.67 1.5 0.25 0.1 0.1 0.1 — — pH (25° C.) 6 6 6 6 6 6 6 6 6 6 Foamability (mL) 70 60 60 60 70 60 75 70 50 70 Foam stability (%) 71 92 92 75 71 83 93 100 4 14

TABLE-US-00003 TABLE 3 Example 3-1 3-2 2-1 2-2 2-3 2-4 3-3 3-4 3-5 1-1 3-6 Surfac- Formu- (a) Sodium 0.01 0.03 0.05 0.1 0.2 0.3 0.35 0.42 0.03 0.25 0.35 tant lation bis-(2- compo- amount propylheptyl) sition (mass %) sulfosuccinate (a′) Amine oxide Sulfobetaine (b) Sodium 0.47 0.25 0.15 polyoxyethylene (average 2.2 mol) lauryl ether sulfate Alkyl glycoside 0.49 0.47 0.45 0.4 0.3 0.2 0.15 0.08 Polyoxyethylene alkyl ether (c) Butyldiglycol 1 1 1 1 1 1 1 1 1 1 1 Water Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- Bal- ance ance ance ance ance ance ance ance ance ance ance Total 100 100 100 100 100 100 100 100 100 100 100 (a)/(b) (mass ratio) 0.02 0.064 0.11 0.25 0.67 1.5 2.3 5.3 0.064 1.0 2.3 pH (25° C.) 6 6 6 6 6 6 6 6 6 6 6 Foamability (mL) 60 60 70 60 60 60 65 60 65 110 61 Foam stability (%) 60 65 71 92 92 75 65 60 62 77 65

[0171] Some of the components in the tables are listed below. Note that component (a′), which is also component (b), shown as component (a′) is the tables for convenience as it was used for a comparison with component (a). [0172] Alkyl glycoside: AG-124, manufactured by Kao Corporation [0173] Polyoxyethylene alkyl ether: a polyoxyethylene alkyl ether, the number carbons in the alkyl group 13, the average number of added moles of ethylene oxide 7, SOFTANOL 70H, manufactured by NIPPON SHOKUBAT CO., LTD. [0174] Amine oxide: AMPHITOL 20N, manufactured by Kao Corporation [0175] Sulfobetaine: AMPHITOL 20HD, manufactured by Mao Corporation [0176] Butyldiglycol: BDG, manufactured by NIPPON NYUKAZAI CO., LTD., ClogPow 0.66