JPH05339598A - Additive for alkaline chemical - Google Patents

Abstract

PURPOSE:To provide the title additive having a specified molecular structure and high solubility and stability under alkaline conditions, and is excellent in functions such as wetting properties, penetrating properties and detergency. CONSTITUTION:The title additive comprises at least one alkyl glycoside of the formula (wherein A is an oxygen atom or a sulfur atom; R is 1-18 C linear or branched alkyl; X and Y which may be the same or different from each other are each -CH2CH2O--CH(CH3)CH2O- or -CH2CH(CH3)O-; Gs which may be the same or different from each' other are each a residue of a 5 or 6 C sugar; ns and n's have average values in the ranges: 0<=n<=10 and 0<=n'<=10, respectively; n''s have an average value in the range: 1<=n''<=3x+1); and x has an average value in the range: 1<=x<=10).

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cleaning agent for automatic dishwashers, a metal surface cleaning agent (steel pipes, ships, vehicles, aircrafts, tanks, etc.), a cleaning agent for bottles, and mercerizing cotton yarn / cotton cloth. The present invention relates to an additive for an alkaline agent used as a penetrating agent, a scouring agent for various fibers, a dyeing aid for cationic dyes, a desizing agent for polyacrylic ester type sizing agents, and the like.

In this specification, the alkaline agent means
Caustic alkali (caustic soda, caustic potash) of several% to 40%, caustic alkali carbonate (sodium carbonate, potash carbonate), caustic alkali phosphate (sodium phosphate monobasic, sodium phosphate dibasic, tertiary phosphorus) Acid soda, sodium tripolyphosphate and their potassium salts), caustic silicates (sodium silicate, potassium silicate), etc. that become alkaline when dissolved in water are the main components, and water glass if necessary. , Builder of polyacrylic acid, EDTA
And the like are meant to include those containing chelating agents, surfactants and the like.

[0003]

2. Description of the Related Art Alkaline agents used in the above applications are
The wettability, penetrability and detergency are not necessarily sufficient only with an alkaline component such as caustic alkali, and a surfactant is usually used as an additive in order to fully exert its functions.

Nonionic, anionic and cationic surfactants can be considered as the surfactant used for this purpose, but since stability under alkaline conditions is required, an interface having an ester bond is required. No activator can be used.

(1) Polyethylene glycol ether type surfactants commonly used as nonionic surfactants have excellent chemical stability in alkalis, but their solubility in the presence of alkalis is remarkable. Since it is low, it cannot be used in the presence of a high concentration of alkali. In the presence of a relatively low concentration of alkali, it is possible to use those having increased solubility by increasing the addition amount of ethylene oxide, but in this case, wettability,
It is not easy to fully satisfy the functions such as permeability and detergency.

(2) The anionic surfactant can be generally used under weak alkaline conditions, but it forms a complex by the presence of calcium ions and precipitates.
It is hard to use because it is strongly affected by ions.

(3) Cationic surfactants are not as practical as alkaline agent additives in terms of performance, but also have a high price and therefore have low practical value.

[0008] Conventional surfactants as additives for alkaline agents satisfy the conditions of solubility and stability under alkaline conditions, and therefore sufficiently satisfy the improvement of wettability, permeability and detergency. There is no such thing, and the development of an alkaline agent additive having more excellent functions is earnestly desired. In particular,
When the alkali concentration is high, the solubility of the surfactant decreases, so that it becomes more difficult to select the alkali agent additive.

[0009]

DISCLOSURE OF THE INVENTION The present invention aims to provide an alkaline agent additive which exhibits high solubility and stability under alkaline conditions and which is excellent in functionality such as wettability, permeability and detergency. To aim.

[0010]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to solve the above problems, and as a result, the alkyl glycosides represented by the following general formula (1) are It was found that the stability in the solution is high and the function is extremely excellent. That is, the present invention provides the following general formula (1)

[0011]

[Chemical 2]

[In the formula, A represents an oxygen atom or a sulfur atom, R represents a linear or branched alkyl group having 1 to 18 carbon atoms, and X and Y are the same or different and are -CH _{2;
CH 2 O -, - CH (} CH 3) CH 2 O- or -CH
₂ CH (CH ₃ ) O—, G is the same or different and represents a sugar residue having 5 or 6 carbon atoms, and n and n ′ have an average value of 0 ≦ n ≦ 10 and 0 ≦ n ′ ≦ 10. , N ″ represents an average value of 1 ≦ n ″ ≦ (3x + 1), and x represents an average value of 1 ≦ x ≦ 10. ] An alkaline agent additive comprising at least one kind of alkyl glycosides represented by

In the compound of the general formula (1), A represents an oxygen atom or a sulfur atom, preferably an oxygen atom.

In the compound of the general formula (1), the linear or branched alkyl group having 1 to 18 carbon atoms represented by R is a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n group. -Butyl group, isobutyl group, sec-butyl group, pentyl group, hexyl group, 2-ethylhexyl group, n-heptyl group, n-octyl group, n-nonyl group,
n-decyl group, n-undecyl group, n-dodecyl group, n
-Tetradecyl group, n-hexadecyl group, n-octadecyl group and the like can be mentioned, preferably a linear or branched alkyl group having 4 to 14 carbon atoms, and more preferably 6 carbon atoms.
-12 straight-chain or branched alkyl groups.

The average value of n is 0≤n≤10, preferably 0≤n≤5, more preferably 0≤n≤2.
Indicates. n ′ has an average value of 0 ≦ n ′ ≦ 10, preferably 0 ≦ n ′ ≦ 5, more preferably 0 ≦ n ′ ≦
2 is shown. n ″ has an average value of 1 ≦ n ″ ≦ (3x + 1), and preferably has an average value of 1 ≦ n ″ ≦ 16. x has an average value of 1 ≦ x ≦ 10, preferably an average value of 1 ≦ x
≦ 5 is shown.

Examples of the sugar residue represented by G include sugar residues having 5 carbon atoms such as apiose, arabinose, lyxose, ribose and xylose, and glucose, galactose, mannose, fructose, altrose,
Examples thereof include sugar residues having 6 carbon atoms such as idose, galose, and talose, and preferable sugar residues include glucose. In addition, a sugar residue represented by G _x (x is 2 or more)
Examples thereof include sucrose, maltose, isomaltose, maltotriose, isomaltotriose and the like.

X and Y are the same or different and are --CH.
_{2 CH 2 O -, - CH} (CH 3) CH 2 O- or -C
H ₂ CH (CH ₃ ) O—, preferably —CH ₂ C
H ₂ O- are shown.

The compound represented by the general formula (1) of the present invention in which n '= 0 and n is not 0 can be produced, for example, according to the method shown in the following reaction process formula (I).

Reaction process formula (I)

[0020]

[Chemical 3]

[Wherein A, R, X, G, n and x are the same as defined above. However, n is not 0. ] The reaction is a sugar residue G _x
And ethylene glycol monomethyl ethers (2) are reacted in a solvent in the presence of an acid catalyst to obtain alkyl glycosides represented by the general formula (1a). As an acid catalyst,
Hydrogen chloride gas, sulfuric acid, p-toluenesulfonic acid, etc. may be mentioned, and 1 to 10 equivalents of ethylene glycol monomethyl ethers (2) and 0.005 to 0.5 equivalents of acid catalyst are used per 1 mol of the sugar residue G _x. To use. N-as a solvent
Methylpyrrolidone, DMF, etc. can be used, and ethylene glycol monomethyl ethers (2) itself can be used as a solvent. When ethylene glycol monomethyl ether (2) is used as a solvent, it becomes a heterogeneous system at the start of the reaction, but it shifts to a homogeneous system as the reaction progresses.
The reaction time is 0.5 to 5 hours, and the reaction temperature is 80 ° C to 140 ° C.
The reaction proceeds advantageously at ° C.

General formula (1) of the present invention in which n = n '= 0
The compound represented by can be produced, for example, according to the method shown in the following reaction process formula (II).

Reaction process formula (II)

[0024]

[Chemical 4]

[In the formula, A, R, G and x are the same as defined above. The reaction is carried out under the same conditions as in the above reaction process formula (I) except that R-A- _Xn (2) is replaced with R-AH (3), and the compound of the present invention represented by formula (1b) To get

The compound represented by the general formula (1) of the present invention in which n'and n are not 0 can be produced according to the method represented by the reaction formula (III).

Reaction process formula (III)

[0028]

[Chemical 5]

[Wherein A, R, X, Y, G, and x are the same as described above, and n ″ represents an average value of 0 <n ″ ≦ 10, n
And n ′ have average values of 0 <n ≦ 10 and 0 <n ′ ≦ 1
Indicates 0. Reaction Step With respect to 1 mol of the compound of the formula (1a) obtained in the formula (I), 0.1 to 10 equivalents of ethylene oxide, propylene oxide or a mixture thereof in a solvent are reacted in the presence of a catalyst. The alkyl glycosides represented by the formula (1c) are obtained. As the solvent, ethyl acetate, N-methylpyrrolidone, DMF,
Water or the like can be used, but if the reaction is carried out at a temperature at which the compound of (1a) melts, the reaction can be carried out without a solvent.
As the catalyst, caustic soda, caustic potash, sodium methylate, sodium ethylate, etc. can be used.
With respect to 1 mol of the compound of a), 0.005 to 0.0
Use 5 equivalents. The reaction proceeds advantageously at a reaction time of about 0.5 to 5 hours and a reaction temperature of about 70 to 150 ° C.

The compound represented by the general formula (1) of the present invention in which n = 0 and n ′ is not 0 can be produced according to the method represented by the reaction formula (IV).

Reaction process formula (IV)

[0032]

[Chemical 6]

[Wherein A, R, X, Y, G, and x are the same as described above, and n ″ represents an average value of 0 <n ″ ≦ 10, and n
′ Indicates that the average value is 0 <n ′ ≦ 10. ] The reaction is RA
Except for replacing -X _n -G _x a (1a) to _{R-A-G x (1b} ) is carried out under the same conditions as in the above reaction step formula (I), the compounds of the present invention represented by Formula (1d) obtain.

The alkaline agent to which the alkyl glycosides of the present invention are added is used as a detergent for an automatic dishwasher,
Metal surface cleaners (steel pipes, ships, vehicles, aircraft, tanks, etc.), bottle cleaners, penetrants for mercerizing cotton yarn and cotton cloth, scouring agents for various fibers, dyeing aids for cationic dyes, polyacrylics Examples include acid ester-based sizing agents such as desizing agents. As the alkaline component which is the main component of the alkaline agent, conventionally known alkalis are widely used. For example, caustic soda, caustic potash and other carbonates, sodium carbonate, potassium carbonate and other carbonates, buffers, caustic phosphates ( First sodium phosphate, second sodium phosphate,
Third sodium phosphate, sodium tripolyphosphate and potassium salts thereof), caustic silicates (sodium silicate, potassium silicate) and the like may be used. The pH of the alkaline agent solution is usually about 9 or higher, preferably about 10 to 14, more preferably about 10 to 13.5.

In the present invention, the addition amount of the alkyl glycosides varies depending on the use of the alkaline agent and the like, but is usually about 1 to 50,000 mg / L, preferably 10 to 500.
It is about 0 mg / L.

In addition to the alkyl glycosides of the present invention, other additives may be added to the alkaline agent. Such additives include sodium alkyl sulfate, ethylene oxide adduct of alkanol, surfactants such as tetraalkylammonium chloride, chelating agents such as ethylenediaminetetraacetate, glycolic acid and citric acid, sodium polyacrylate, carboxy. Examples include builders such as methyl cellulose,
These additives are usually added in an amount of 10 to 50,000 mg / L.

The alkyl glycosides of the present invention can be used in accordance with a known method for various purposes using an alkaline agent. For example, when used for mercerizing cotton fibers, it can be carried out as follows. .. That is,
0.1 to 2% by weight of alkyl glycosides as an additive is added to a 20 to 40% by weight sodium hydroxide aqueous solution, and then 0.5 to 5% at room temperature in a state where the cotton thread or cotton cloth is strained so as not to shrink. Soak for about 5 hours. Subsequent washing with water makes it possible to finish the cotton fiber, which is glossy and easy to dye.

[0038]

EFFECTS OF THE INVENTION The alkyl glycosides of the present invention are highly stable to alkalis and highly soluble in alkaline solutions and have excellent functionality such as wettability, permeability and detergency. Extremely useful. Moreover, since it dissolves stably and easily in a high-concentration alkaline agent solution, when using a high-concentration alkaline solution such as a cleaning agent for automatic dishwashers, a metal surface cleaning agent, or a mercerizing agent for cotton yarn / cotton. Especially useful for.

[0039]

EXAMPLES The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0040]

[Test Example 1] Alkali compatibility The alkali compatibility of the alkyl glycosides of the present invention was evaluated by comparing the ethylene oxide adduct of nonylphenol (EO addition 30 mol) with a commercially available penetrant for mercerizing alcohol (sulfate ester alcohol type, trade name: neolate). CM-20, Nika Chemical Co., Ltd.) and a commercially available penetrant for alkaline weight reduction processing (alcohol phosphate ester salt type, trade name: Neolate NA-30, Nika Chemical Co., Ltd.).

Regarding alkali compatibility, alkaline aqueous solutions having the respective concentrations shown in Table 1 below were prepared using reagent grade sodium hydroxide. A predetermined amount of surfactant was added to the solution, and the alkali compatibility was evaluated. The results are shown in Table 1.

Table 1 Alkali compatibility Soluble sodium hydroxide concentration (%) 25 30 35 Surfactant concentration (%) 1 2 1 2 1 2 2 Sucraph AG-8 ○ ○ ○ ○ ○ ○ Sucraph AG-8 ' ○ ○ ○ ○ ○ ○ Sucraph AG-10 ○ ○ ○ △ △ △ × Nonylphenol EO adduct × × × × × × × (EO addition 30 mol) Penetrant for mercerizing △ △ × × × × Penetrant for alkaline reduction processing ○ ○ ○ △ △ × In Table 1, Sucraph AG-8 (trade name, manufactured by Nippon Seika Co., Ltd.) contains n-octyl glucoside as a main component, and Sucraph AG-8 ′ (trade name, manufactured by Nippon Seika Co., Ltd.). (Manufactured by) is based on 2-ethylhexyl glucoside, and Sucraph AG-10 (trade name, manufactured by Nippon Seika Co., Ltd.) is based on n-decyl glycoside.

In Table 1, ◯ indicates the same state as when the penetrant was not added.

Δ indicates a semitransparent state with turbidity, which is separated when left for a long time.

X indicates a state in which oily molecules are dispersed and separated when left for a short time.

From the results shown in Table 1, it became clear that the surfactant of the present invention exhibits excellent compatibility even in a high-concentration aqueous sodium hydroxide solution.

[0047]

Test Example 2 Alkaline stability Sucraph, which is an alkyl glycoside of the present invention
AG-8, Sucraph AG-8 'and Sucr
Each of aph AG-10 was dissolved in a 30% sodium hydroxide aqueous solution so as to have a concentration of 2%, and allowed to stand at 80 ° C. for 10 hours to examine the stability in an alkaline aqueous solution. The stability was evaluated by quantifying alkyl glycosides by high performance liquid chromatography (HPLC).

As a result, the alkyl glycosides of the present invention, Sucraph AG-8 and Sucraph A, were obtained.
Neither G-8 'nor Sucraph AG-10 showed a peak of the decomposed product by HPLC, and it was revealed that it showed excellent stability even under severe conditions of heating with a high-concentration sodium hydroxide aqueous solution. ..

[0049]

[Test Example 3] Penetration Power The same solutions as in Test Example 1 were used to compare the penetration power of various penetrants using a polyester woven fabric. Specifically, the scouring cloth of polyester fiber woven cloth (satin) is 2.5
The test piece was cut into a size of 2.5 cm, floated on the surface of each aqueous solution at 25 ° C., and the time until the test piece was completely wet was measured. The results are shown in Table 2. When no penetrant was used, it took 180 seconds or more for any alkaline aqueous solution.

Table 2 Immersion Permeability Sodium Hydroxide Concentration (%) 25 30 35 Surfactant Concentration (%) 0.5 1.0 1.0 0.5 1.0 0.5 1.0 Sucraph AG-8 <1 < 1 <1 <1 2 1 1 Sucraph AG-8 '<1 <1 <1 <1 <1 2 1 Sucraph AG-10 <1 <1 <1 <1 2 3 2 Penetrant for mercerizing 5 3 9 4 18 8 Penetration for alkali reduction processing Agent 2 1 4 2 6 4 From the results shown in Table 2, it was revealed that the alkyl glycosides of the present invention markedly improve the permeability of a high-concentration aqueous sodium hydroxide solution into polyester fibers.

[0051]

Test Example 4 Surface Tension With respect to the same solution as in Test Example 1, the surface tension was measured at 25 ° C. using a Genui type surface tensiometer. The following formula: Specific surface tension = surface tension of each solution / surface tension of water was used to convert each measured value into a specific surface tension. The results are shown in Table 3 below.

Table 3Surface tension Sodium hydroxide concentration (%) 25 30 35 Surfactant concentration (%) 0.5 1.0 0.5 1.0 1.0 0.5 1.0 Sucrap AG-8 0.422 0.390 0.428 0.420 0.453 0.450 Sucrap AG-8 '0.483 0.472 0.492 0.491 0.502 0.491 Sucrap AG-10 0.382 0.380 0.400 0.402 0.430 0.4
21 Penetrant for mercerizing 0.600 0.587 0.619 0.608 0.620
0.618 Alkaline weight loss penetrant 0.448 0.439 0.456 0.455 0.483 0.470 No penetrant 1.17 1.17 1.20 1.20 1.30 1.30 From the results of Table 3, the penetrant of the present invention is
Surface tension of concentrated aqueous solution of sodium hydroxide equivalent to or more than the penetrant
It became clear that it has a force lowering effect.

[0053]

[Application Example 1] Merchant processing of cotton fiber The effect of the additive was evaluated by a cotton tape shrinkage method (the cotton tape is dipped in an alkaline liquid (treatment liquid) and the shrinkage rate of the cotton tape caused by the action of alkali is measured). The processing temperature was 15 ° C. The results are shown in Figure 1.

In FIG. 1, * "x" indicates the result when a 30% sodium hydroxide aqueous solution was used as the treatment liquid. * "○" is a 30% sodium hydroxide aqueous solution + 1% Neolate CM-20 (manufactured by Nika Kagaku Co., Ltd.) as a treatment liquid.
The result using is shown.

* “Δ” indicates the result of using 30% aqueous sodium hydroxide solution + 0.3% Sucraph AG-8 as the treatment liquid.

* “∇” indicates the result of using 30% sodium hydroxide aqueous solution + 0.3% Sucraph AG-8 ′ as a treatment liquid.

As is clear from FIG. 1, the alkyl glycosides of the present invention are useful as penetrants for mercerizing. In the case of “◯”, the solubility of the penetrant in the alkaline aqueous solution was poor, and thus the treatment liquid was slightly turbid.

[0058]

[Application Example 2] Polished steel plate (JIS G3141 (SPCC-
SB)), and a commercially available margarine applied thereto was used as a sample. The following two cleaning solutions were used, and various cleaning agents were added thereto to compare the cleaning effects.

I) 20% aqueous sodium hydroxide solution ii) (5% sodium carbonate + 1% sodium gluconate) aqueous solution i) At 20 ° C. for 0.5 hours, and ii) At 20 ° C. for 5 hours. Dried. This was sprayed with a 0.1% yellow OB solution and then lightly washed with water to determine the degree of color development on oily stains.

To determine the residual amount of margarine stain, a sample in which stain was developed with a yellow OB solution was taken as a black and white photograph, and the stain index was calculated from the blackening degree of the negative film using the following formula.

Contamination index = [(A−B) / (C−B)] × 100 In the formula: “A” indicates the degree of blackening of the washed sample.

"B" indicates the degree of blackening of the unwashed sample.

"C" indicates the degree of blackening of the sample without stains.

The judgment criteria are shown below.

"±": The stain index is 0 to 5.

"+": The stain index is 5 to 10.

"++": The stain index is 10 to 20.

"+++": The stain index is 20 to 30.

Table 4 i) 20% sodium hydroxide aqueous solution interface Activator Amount (%) Judgment Remarks No addition ++ Sucraph AG-10 0.5 ± Sucraph AG-8 0.5 ± Sucraph AG- 8 '0.5 ± Sint Rex -EHR 0.5 + liquid is (cont) nonion E-215 0.5 ++ solution cloudy table 4 slightly cloudy ii) (5% sodium + 1% sodium gluconate carbonate) solution field Surface active agent Addition amount (%) Judgment Remarks No addition +++ Sugraph PHAG-10 0.5 ± Sugraph PH-8 0.5 ± Sugraph AG-8 ′ 0.5 + Syntrex-EHR 0.5 + Nonion-E215 0.5 + liquid is slightly cloudy . In Table 4, * Syntrekkus-EHR is 2-ethylhexyl alcohol sulfate sodium salt (trademark). Name, manufactured by NOF CORPORATION).

* Nonion-E215 is polyoxyethylene oleyl ether (trade name, manufactured by NOF CORPORATION)
Indicates.

[0071]

[Application Example 3] Cleaning agent for automatic dishwasher Potassium caustic 3 parts, potassium silicate 5 parts, sodium metasilicate 3
Part, nitrilotriacetate 10 parts, sodium citrate 1
0 parts, EDTA.4Na 2 parts and various surfactants 3
A solution obtained by dissolving 60 parts of water in 60 parts of water was used as a cleaning agent stock solution.

The cleaning test was conducted using a door type automatic dishwasher manufactured by Hitachi Electronics Co., Ltd. for 50 seconds of main cleaning with a cleaning solution at 60 ° C. and 10 seconds of rinsing with water at 60 ° C. The washing solution used was a stock solution diluted with water to 0.2%. As a sample, a porcelain dish and a melamine resin dish were used, to which 6 g of artificial pollutants having the following formulation were uniformly applied.

Artificial pollutants: Beef tallow 50 parts Butter 7.5 parts Mayonnaise 7.5 parts Tomato juice 7.5 parts Wheat flour 12.5 parts Corn starch 7.5 parts Raw eggs 7.5 parts Total 100.0 parts Cleaning effect The evaluation was carried out by the same stain / fouling test of oil and fat as in the application example 2 described above, and a starch stain / fouling test in which a 0.1N iodine solution was sprayed to develop the color of the starch.

The results are shown in Table 5. The evaluation criteria for the cleaning effect are the same as in Table 4 above.

[0075] Table made 5 field surface active agent porcelain dish made melamine dishes, greasy soil starch stains, greasy soil starch stains without adding ± +++ + +++ Sucraph AG-8 ± + ± + Sucraph AG-8 '± + ± + Plonon 102 ± ++ + ++ Nonion-E215 + ++ + ++ Syntrex-EHR ± ++ ± ++ When Nonion-E215 is used, the stock solution separates and it becomes difficult to rinse and is suitable for the cleaning agent. I didn't. On the other hand, it is clear that the alkyl glycoside of the present invention has a low foaming property and an excellent cleaning effect, and is excellent as a detergent for an automatic dishwasher.

[0076]

[Application Example 4] Scouring of polyester fiber P woven mainly from a polyacrylic ester type sizing agent
The effect of surfactants on the scouring of ET spun cloth
It was examined under the following conditions.

* Scouring bath composition; sodium hydroxide 2.0
g / l, surfactant 0.5 g / l * bath ratio; 1: 10 * temperature and time; immersion treatment at 90 ° C. for 5 minutes with gentle stirring, followed by washing with hot water for 5 minutes and then with water for 10 minutes.

Table 6 Interface Activator Residual fat ratio (%) Residual paste ratio (%) Remarks Not added 0.42 1.25 Sucraph AG-10 0.17 0.40 Slightly foaming Sukraph AG-8 0 .18 0.38 No suds Sucraph AG-8 '0.21 0.45 No suds Nonion-E215 0.19 0.39 Effervescent pronone 102 0.26 0.72 No suds Syntrecchix-EHR 0.22 0. 52 Slightly foaming untreated 0.68 8.23 The residual fat ratio represents the ratio of the fat content after washing extracted with n-hexane, and the residual paste ratio was the amount extracted with 1N-sodium hydroxide after washing. The ratio of the sizing agent is shown.

Since the scouring process is often carried out in a continuous manner, there is a problem with the cleaning effect whether foaming occurs during the scouring, hot water washing and water washing steps. Judging from the balance between the cleaning effect and the foaming, it became clear that the alkyl glycoside of the present application is an excellent additive for the scouring of polyester fibers.

[0080]

[Application Example 5] Scouring of cotton fibers The effect of the surfactant in the scouring was examined under the following conditions using a 100% cotton knit cloth.

* Scouring bath composition: sodium hydroxide 1.5
g / l, 30% H ₂ O ₂ 7.0 g / l and surfactant 0.5 g / l * bath ratio; 1: 10 * temperature and time; dipping treatment at 95 ° C. for 30 minutes with gentle stirring, After washing with hot water for 5 minutes, it was washed with water for 5 minutes.

Table 7 Interface Activator Residual fat ratio (%) Water absorption (mm) Remarks Not added 0.29 5.6 Sucraph AG-10 0.12 12.8 Slightly foaming Sukraph AG-8 0.8. 13 12.2 No foaming Sucraph AG-8 '0.15 10.9 No foaming Nonion-E215 0.13 12.3 Strong foaming Pronone 102 0.20 7.1 No foaming Syntrecchis-EHR 0.18 10.3 Somewhat unfoamed 0.57 0.2 Water absorbency indicates the height of water that is absorbed by water when the lower end 10 mm of a 10 mm wide cloth is immersed in water and rises in 5 minutes.

When a low concentration of alkali is used,
It was revealed that the alkyl glycoside of the present invention is excellent in terms of the balance between the presence or absence of foaming and the cleaning effect.

[Brief description of drawings]

FIG. 1 is a graph showing the evaluation results of the effect of additives by a cotton tape shrinkage method.

Front page continuation (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location C11D 17/00 // D06L 1/12 D06M 11/38 13/17 15/53 D06M 15/53

Claims (1)

[Claims] 1. The following general formula (1): [In the formula, A represents an oxygen atom or a sulfur atom, R represents a linear or branched alkyl group having 1 to 18 carbon atoms, and X represents
And Y are the same or different and are —CH ₂ CH ₂ O—,
-CH (CH ₃₎ CH ₂ O- or -CH ₂ CH (CH
₃ ) O-, G is the same or different and represents a sugar residue having 5 or 6 carbon atoms, and n and n ′ have an average value of 0 ≦ n ≦
10 and 0 ≦ n ′ ≦ 10, and n ″ has an average value of 1 ≦
n ″ ≦ (3x + 1), where x has an average value of 1 ≦ x ≦ 10
Indicates. ] The alkaline agent additive which consists of at least 1 sort (s) of the alkyl glycoside represented by these.