HYDROPHILIZATION TREATMENT AGENT COMPOSITION

Abstract

The present invention is a hydrophilization treatment agent composition containing (A) a branched anionic surfactant, (B) a di-long chain hydrocarbon cationic surfactant, and water, wherein a molar ratio of (B) to a total of (A) and (B), (B)/[(A)+(B)], is 0.1 or more and 0.8 or less.

Claims

1: A hydrophilization treatment agent composition comprising (A) a branched anionic surfactant, (B) a di-long chain hydrocarbon cationic surfactant, and water, wherein a molar ratio of (B) to a total of (A) and (B), (B)/[(A)+(B)], is 0.1 or more and 0.8 or less.

2: The hydrophilization treatment agent composition according to claim 1, wherein the composition further comprises (C) a polyvalent metal ion.

3: The hydrophilization treatment agent composition according to claim 2, wherein (C) is a divalent metal ion.

4: The hydrophilization treatment agent composition according to claim 2, wherein a molar ratio of (C) to the total of (A) and (B), (C)/[(A)+(B)], is 0.2 or more and 4 or less.

5: The hydrophilization treatment agent composition according to claim 1, wherein (A) is one or more branched anionic surfactants selected from the group consisting of an internal olefin sulfonate salt, a secondary alkane sulfonate salt and a dialkyl sulfosuccinate salt.

6: The hydrophilization treatment agent composition according to claim 1, wherein the composition comprises (A) in an amount of 0.001 mass % or more and 60 mass % or less.

7: The hydrophilization treatment agent composition according to claim 1, wherein the composition is for use on hard surfaces.

8: The hydrophilization treatment agent composition according to claim 1, wherein (B) is a cationic surfactant having two hydrocarbon groups with 6 or more and 14 or less carbons.

9: The hydrophilization treatment agent composition according to claim 1, wherein (B) is a cationic surfactant represented by the following general formula (B): ##STR00005## wherein two of R.sup.1b, R.sup.2b, R.sup.3b and R.sup.4b are hydrocarbon groups with 6 or more and 14 or less carbons and the remaining two are hydrocarbon groups with 1 or more and 3 or less carbons; and X.sup.− is a counter ion.

10: A method for hydrophilizing a solid surface, comprising contacting the solid surface with a treatment liquid comprising (A) a branched anionic surfactant, (B) a di-long chain hydrocarbon cationic surfactant, and water, in which a molar ratio of (B) to a total of (A) and (B), (B)/[(A)+(B)], is 0.1 or more and 0.8 or less.

11: The hydrophilizing method according to claim 10, wherein the treatment liquid further comprises (C) a polyvalent metal ion.

12: The hydrophilizing method according to claim 11, wherein (C) is a divalent metal ion.

13: The hydrophilizing method according to claim 11, wherein a molar ratio of (C) to the total of (A) and (B), (C)/[(A)+(B)], is 0.2 or more and 4 or less.

14: The hydrophilizing method according to claim 11, wherein the treatment liquid is obtained by mixing a composition comprising the component (A), the component (B) and water with a composition comprising the component (C) and water.

15: The method for hydrophilizing a solid surface according to claim 10, wherein the solid surface is a solid surface of a hard article.

16: The method for hydrophilizing a solid surface according to claim 10, wherein the solid surface is rinsed with water after the solid surface is contacted with the treatment liquid.

17. (canceled)

Description

EXAMPLES

Production Example 1 (Production of C.SUB.18.-IOS-K)

[0246] 7,000 g of 1-octadecanol (manufactured by Kao Corporation, “KALCOL 8098”) and 700 g of γ-alumina (manufactured by Strem Chemicals, Inc.) as a catalyst were prepared in a flask with a stirrer, and the reaction was carried out under stirring at 280° C. with nitrogen (7,000 ml/min.) circulating in the system, thereby obtaining a crude internal olefin. The crude internal olefin was distilled at 148-158° C. and 0.5 mmHg to obtain an internal olefin with 18 carbons with an olefin purity of 100%. The internal olefin was placed in a thin-film sulfonation reactor (inner diameter: 14 mmφ, length: 4 m), and using a sulfur trioxide gas with an SO.sub.3 concentration of 2.8 volume %, the sulfonation reaction was carried out under the condition that cooling water at 20° C. was passed through an outer jacket of the reactor. The reaction molar ratio (SO.sub.3/internal olefin) was set at 1.09.

[0247] The resultant sulfonated product was added to a potassium hydroxide aqueous solution equivalent to 1.2 molar times the theoretical acid number, and neutralized at 30° C. for 1 hour with stirring. The neutralized product was hydrolyzed by heating in an autoclave at 160° C. for 1 hour to obtain a crude product of an internal olefin sulfonate potassium salt.

[0248] 300 g of the crude product and 300 mL of ethanol were placed in a separatory funnel, and 300 mL of petroleum ether was added per time to extract and remove oil-soluble impurities. At this time, components such as sodium sulfate and the like which were precipitated at the oil-water interface due to the addition of ethanol were also separated and removed from the water phase by oil-water separation operation, and this operation was carried out three times. The water phase side was evaporated to dryness to obtain a potassium salt of an internal olefin sulfonate with 18 carbons (C.sub.18-IOS-K).

[0249] The molar mass distribution of positions at which sulfonic acid groups were present in the C.sub.18-IOS-K was as follows: position 1: 1.6%, position 2: 25.1% and positions 3-9: 73.3%. The molar ratio of an H species to an O species (H species/O species) was 80/20.

Production Example 2 (Production of C.SUB.16.-IOS-K)

[0250] A potassium salt of an internal olefin sulfonate with 16 carbons (C.sub.16-IOS-K) was obtained in the same manner as in Production Example 1, except that 1-hexadecanol was used instead of 1-octadecanol. The molar mass distribution of positions at which sulfonic acid groups were present in the C6-IOS-K was as follows: position 1: 0.5%, position 2: 19.9% and positions 3-9: 79.6%. The molar ratio of an H species to an O species (H species/O species) was 80/20.

Production Example 3 (Preparation of Hard Water Stock Solution)

[0251] 83.32 g of calcium chloride (CaCl.sub.2), manufactured by FUJIFILM Wako Pure Chemical Corporation, Wako grade 1) and 36.99 g of magnesium chloride hexahydrate (MgCl.sub.2.6H.sub.2O, manufactured by FUJIFILM Wako Pure Chemical Corporation, Wako grade 1) were mixed with ion exchange water such that the solution volume is 1 L, thereby obtaining 5000° dH hard water. The molar ratio of Ca to Mg (Ca/Mg) is 8/2. This 5000° dH hard water was used as hard water for each test by appropriately diluting with ion exchange water as a stock solution.

Examples 1 to 14 and Comparative Examples 1 to 2

(1) Preparation of Hydrophilization Treatment Agent Composition

[0252] Any component (A) or (A′) and any component (B) or (B′) shown below were dissolved in ion exchange water to be present in predetermined concentrations and at a predetermined molar ratio. The hardwater stock solution in Production Example 3 was added to the mixture to obtain a predetermined molar ratio by a Ca ion and an Mg ion, which were component (C). The mixture was stirred for 15 minutes under the conditions of a liquid temperature of 25° C. and 70 rpm, thereby obtaining a hydrophilization treatment agent composition in Table 1. The total concentration of component (A) or (A′) and component (B) or (B′) was 1000 ppm in all resultant hydrophilization treatment agent compositions. Note that, in Table 1, the molar ratios are shown for component (A′) as component (A) and for component (B′) as component (B).

<Component (A)>

[0253] C.sub.18-IOS-K: the potassium salt of an internal olefin sulfonate with 18 carbons produced in Production Example 1

[0254] C16-IOS-K: the potassium salt of an internal olefin sulfonate with 16 carbons produced in Production Example 2

[0255] SAS: a sodium alkane (with 15 carbons) sulfonate (manufactured by Kao Corporation, “LATEMUL PS”)

[0256] DASS: di-2-ethylhexyl sulfosuccinate sodium salt (manufactured by Tokyo Chemical Industry Co., Ltd., “Bis(2-ethylhexyl)Sulfosuccinate Sodium salt”)

<Component (A′)>

[0257] ES: a sodium polyoxyethylene (average number of added moles 2) linear alkyl (with 12 carbons) ether sulfate (manufactured by Kao Corporation, “EMAL 270J”)

<Component (B)>

[0258] DC8DMAB: dioctyl dimethyl ammonium bromide (manufactured by Tokyo Chemical Industry Co., Ltd., “Dimethyldioctylammonium Bromide”)

[0259] C8BAC: octyl dimethyl benzalkonium chloride

(2) Evaluation

(2-1) Evaluation of Hydrophilization Surfacing

[0260] An entire test piece was immersed in 500 mL of each hydrophilization treatment agent composition, which was stirred for 15 minutes under the conditions of a liquid temperature of 25° C. and 70 rpm to perform the hydrophilization treatment. Rinsing hard water containing component (C) in the same concentration as in the hydrophilization treatment agent composition was prepared from the hard water stock solution and ion exchange water. The entire test piece was immersed in 500 mL of the rinsing hard water, and rinsed for 1 minute at a liquid temperature of 25° C. and 70 rpm. This rinsing was performed twice. After rinsed, the test piece was dried at room temperature overnight.

[0261] The static contact angle relative to ion exchange water was measured on the surface of the treated portion of the dried test piece using an automatic contact angle meter, “DM-501” (manufactured by Kyowa Interface Science Co., Ltd.) under the conditions of an added amount of ion exchange water of 1 μL and 30 seconds after the addition. Measurements were made at three to five arbitrary locations on a single test piece, and the average value of the measurement values was used. The smaller the contact angle is, the more excellent the hydrophilization performance is. The results are shown in Table 1.

[0262] The following test pieces were used.

[0263] Model skin: BIOSKIN Plate #WHITE manufactured by Beaulax Co., Ltd.

[0264] Polypropylene: PP manufactured by Engineering Test Service Co., Ltd.

[0265] Polyester: PETP manufactured by Engineering Test Service Co., Ltd.

[0266] Stainless steel: SUS430 manufactured by Engineering Test Service Co., Ltd.

[0267] Glass: a glass plate manufactured by Yugenkaisha Akebono Shokai (four edges were chamfered)

(2-2) Evaluation of Finish of Test Pieces (Glass and Polyester)

[0268] For the glass and polyester test pieces for which hydrophilization surfacing was evaluated in the above (2-1), the transmittance at 600 nm was measured using an automatic spectrophotometer U-2910 (manufactured by Hitachi High-Tech Science Corporation). The transmittance was measured at five arbitrary locations, and the average value was adopted. The transmittance (average value) is shown in Table 1 as a relative value taking the transmittance for an untreated test piece as 100% (reference). The larger a numeral of the transmittance in the table is, the better the finish is, without loss of the inherent transparency of glass and polyester.

(2-3) Formulation Stability

[0269] In preparing a hydrophilization treatment agent composition in the above (1), the condition of component (A) or (A′) and component (B) or (B′) was visually observed when they were dissolved in ion exchange water to be present in predetermined concentrations to evaluate the formulation stability according to the following criteria. The results are shown in Table 1.

✓: fluid, and having no significant precipitate
x: poorly fluid, and having the occurrence of precipitate and difficult to use for hydrophilization treatment

TABLE-US-00001 TABLE 1 Hydrophilization treatment agent composition (A) (B) Molar ratio Type Mol % Type Mol % (C) (B)/[A) + (B)] (C)/[A) + (B)] Example 1 C18-IOS-K 50 DC8DMAB 50 Ca ion and 0.5 1 2 C18-IOS-K 60 DC8DMAB 40 Mg ion: in 0.4 1 3 C18-IOS-K 60 C8BAC 40 the amount 0.4 1 4 C18-IOS-K 70 DC8DMAB 30 that makes 0.3 1 5 C18-IOS-K 90 DC8DMAB 10 molar ratio 0.1 1 6 C16-IOS-K 50 C8BAC 50 (C)/[(A) + 0.5 1 7 SAS 60 DC8DMAB 40 (B)] those 0.4 1 8 DASS 60 DC8DMAB 40 in the 0.4 1 9 C18-IOS-K 60 DC8DMAB 40 columnus 0.4 0 10 C18-IOS-K 60 DC8DMAB 40 0.4 0.05 11 C18-IOS-K 60 DC8DMAB 40 0.4 0.25 12 C18-IOS-K 60 DC8DMAB 40 0.4 2 13 C18-IOS-K 60 C8BAC 40 0.4 4 14 C18-IOS-K 40 DC8DMAB 60 0.6 1 Comparative 1 ES 60 DC8DMAB 40 0.4 1 Example 2 DC8DMAB 100 1.0 0 Untreated Evaluation Contact angle (°) Model Poly- Stainless Transmittance (%) Formulation skin propylene Polyester steel Glass Glass Polyester stability Example 1 30 28 18 23 23 99.6 99.8 ✓ 2 32 17 11 24 14 99.5 99.4 ✓ 3 86 31 6 18 24 99.6 99.6 ✓ 4 89 25 14 67 23 99.5 99.1 ✓ 5 89 84 15 61 24 99.0 98.9 ✓ 6 21 19 9 7 29 99.7 99.4 ✓ 7 73 41 12 33 25 98.0 97.8 ✓ 8 81 77 18 29 28 99.1 99.1 ✓ 9 89 96 76 74 37 99.3 99.0 ✓ 10 87 93 70 70 31 99.3 99.0 ✓ 11 63 65 18 20 24 99.8 99.6 ✓ 12 30 16 10 28 14 98.1 98.1 ✓ 13 30 18 11 25 14 88.0 84.0 ✓ 14 89 89 66 62 20 96.0 95.9 ✓ Comparative 1 106 98 77 75 34 99.7 99.0 ✓ Example 2 108 100 90 77 38 99.8 99.9 ✓ 108 104 87 78 39 — — —