JP2008523164A - Detergent builder containing polyalkylene oxide adduct of polyhydric alcohol - Google Patents

Abstract

[PROBLEMS] To provide not only excellent compatibility with liquid detergents, high basic performance in terms of recontamination prevention ability, washing rate, etc., but also excellent color tone and odor when used as a detergent builder. A detergent builder excellent in usability as a detergent builder is provided.
A detergent builder comprising a polyalkylene oxide adduct of a polyhydric alcohol as an essential component, a detergent composition comprising the detergent builder, and a washing rate of 23% or more, APHA / Hazen unit A builder for cleaning having a polyhydric alcohol structure whose color tone by number is 50 or less.
[Selection figure] None

Description

The present invention relates to a detergent builder comprising a polyalkylene oxide adduct of a polyhydric alcohol. More specifically, it is suitable for detergent builders, and for detergents containing polyalkylene oxide adducts of polyhydric alcohols that have excellent color tone, low odor and high detergency when used together with an activator as a detergent builder. Regarding builders.

The detergent builder is a component constituting powder and liquid detergents, and various polymer compounds are known to act as detergent builders. Such detergent builders not only exhibit high detergency by preventing re-contamination due to dirt removed by washing, but also have good color (transparency) and low odor characteristics. In order to give a good impression to consumers who use detergents, it is required to improve the properties of these detergents and improve the quality of detergent builders.

The addition of alkylene oxide of polyalkyleneimine with polyalkyleneimine as the main chain and an alkylene oxide such as ethylene oxide added to the nitrogen atom in polyalkyleneimine as a polymer builder that can exert its function as a conventional polymer builder The thing is disclosed (for example, refer patent document 1). Since such a polymer has a property of being dissolved in a liquid detergent, it is indispensable as a component constituting the liquid detergent. When the polyalkyleneimine-alkylene oxide adduct is contained in the detergent together with the active agent, recontamination due to dirt removed by washing is prevented and high detergency is exhibited.
However, when a polyalkyleneimine-alkylene oxide adduct is used as a builder for detergents, the color tone is not sufficient, and it is also required to be good in terms of odor due to the amine system. There is room for improvement to improve these characteristics and the like.
In general, since imine monomers are expensive, the product detergent builder does not have excellent cost performance, and there is room for devising an economically superior detergent builder using cheaper raw materials. there were.

On the other hand, a polycarboxylic acid obtained by copolymerizing a monomer component containing a polyalkylene glycol unsaturated monomer and an unsaturated monocarboxylic acid monomer having a structure in which an oxyalkylene group is bonded to a polyhydric alcohol residue. Includes an acid copolymer and a polyalkylene glycol unsaturated monomer and an unsaturated carboxylic acid monomer having a structure in which an oxyalkylene group is bonded to a polyhydric alcohol residue and having a terminal hydroxyl group A polycarboxylic acid copolymer obtained by copolymerizing monomer components is disclosed (for example, see Patent Document 2). This polycarboxylic acid copolymer has a structure in which an oxyalkylene group is bonded to a polyalkylene glycol unsaturated monomer or a polyhydric alcohol residue, and a terminal is a hydroxyl group. The repeating unit formed by the monomer exhibits the function of making the cement composition and the like excellent in water reduction and workability, and the repeating unit formed by the unsaturated carboxylic acid monomer is polycarboxylic acid. It will exhibit the function of adsorbing acid-based copolymers to cement particles, and by using such polycarboxylic acid-based copolymers as components of cement additives, it is possible to reduce the water and workability of cement compositions, etc. In addition, the strength and durability of the cured product can be improved. However, there is no disclosure of use as a polymer builder in a detergent application or the like, and there is no description of the effects and the like related to use in such a use. Furthermore, there has been room for contrivance to make it more suitable for use in detergent builder applications.
Japanese Patent Publication No. 4-54719 (page 1-2) JP 2003-128738 A (page 2)

The present invention has been made in view of the above situation, and is not only excellent in compatibility with liquid detergents but also capable of exhibiting high basic performance in terms of anti-recontamination ability, washing rate, etc., and a builder for detergents. The purpose of the present invention is to provide a detergent builder that is excellent in color tone and has no odor when used as a detergent builder.

The inventors of the present invention have studied various builders for polymer detergents. Because a small amount of amine is mixed in the detergent builder, the use of polyhydric alcohol instead of polyalkyleneimine as the core of the detergent builder provides excellent clay dispersibility and recontamination prevention. While maintaining high detergency as a detergent builder, it was found that the generation of amines was suppressed and the characteristic odor disappeared. In addition, due to the use of polyhydric alcohol instead of polyalkyleneimine, when used as a builder for detergents, the color tone based on the number of APHA / Hazen unit colors is 1000 or less, and a good color tone can be obtained. By using the polyhydric alcohol, the raw material cost can be reduced, and it has been found that an economically superior detergent builder can be obtained, and it has been conceived that the above-mentioned problems can be solved brilliantly. And since it is compatible with surfactants, it will have excellent compatibility with liquid detergents, and it is suitable not only for powders, but also as a builder for liquid detergents. It has also been found that the present invention can be suitably applied to various uses such as the above, and has reached the present invention.

That is, this invention is a builder for detergents which uses the polyalkylene oxide adduct of polyhydric alcohol as an essential component.
The present invention is also a cleaning builder having a polyhydric alcohol structure having a cleaning rate of 23% or more and a color tone based on the number of APHA / Hazen unit colors of 50 or less.
The present invention is described in detail below.

The detergent builder according to the present invention is obtained by adding polyalkylene oxide to polyhydric alcohol as a core part, and exerts high detergency by adsorbing on the fiber surface and removing dirt, and is colorless and transparent and has no odor It exhibits excellent performance and high quality as a builder for detergents.
The polyalkylene oxide adduct of the polyhydric alcohol is considered to exhibit a function of improving clay dispersibility due to the hydrophilicity and steric repulsion of the oxyalkylene group. Further, the repeating unit formed by the polyalkylene oxide adduct of polyhydric alcohol has many oxygen atoms in one molecule, but these are also monomer units having a branched structure. It is considered that the above functions are effectively exhibited.

The detergent builder is preferably a detergent builder for a liquid detergent.
The detergent builder is preferably used as a liquid detergent because the polyalkylene oxide adduct of the polyhydric alcohol, which is an essential component, has the structure described above, and thus has excellent compatibility with surfactants and liquid detergents. be able to. The liquid cleaning agent is easy to use as a daily cleaning agent and is indispensable for a liquid cleaning agent having excellent cleaning power. Liquid detergents have advantages over powder detergents in that they can be applied directly to the area where dirt is desired to be removed, and that drying is not required in the manufacturing process.

The polyalkylene oxide adduct of the polyhydric alcohol is excellent in use feeling that it is colorless and transparent and has no odor by using the polyhydric alcohol in the core portion. Such a color tone can be evaluated by the number of APHA / Hazen unit colors. The APHA / Hazen unit color number is a color test method for chemical products using a platinum-cobalt scale, and can be specifically obtained according to JIS K0071-1. The detergent builder preferably has a color tone based on the number of APHA / Hazen unit colors of 1000 or less. If the color tone exceeds 1000, coloring during use will be conspicuous, and the feeling of use may be impaired.
More preferably, it is 500 or less, More preferably, it is 100 or less. The color tone range based on the number of APHA / Hazen unit colors is preferably 0 to 1000, more preferably 0 to 500, and still more preferably 0 to 100.
The detergent builder can have a low odor due to the polyalkylene oxide adduct of polyhydric alcohol, and the ammonia odor concentration is preferably 3 ppm or less. More preferably, it is 0-2 ppm, More preferably, it is 0-1 ppm. Thus, a builder for detergents having an ammonia odor concentration of 3 ppm or less is also a preferred embodiment of the present invention.

The polyalkylene oxide adduct of polyhydric alcohol in the present invention is a compound having a structure in which an oxyalkylene group is bonded to a polyhydric alcohol residue, and may be a compound having a terminal hydroxyl group. The polyhydric alcohol residue means a group having a structure in which active hydrogen is removed from a hydroxyl group of the polyhydric alcohol, but is not particularly limited to a group formed by reaction with the polyhydric alcohol.

The polyhydric alcohol is not particularly limited as long as it is a compound containing an average of 3 or more hydroxyl groups in one molecule. A preferred form is a compound in which the polyhydric alcohol residue is composed of three elements of carbon, hydrogen and oxygen.

The number of hydroxyl groups of the polyhydric alcohol is preferably 3 or more, and preferably 300 or less. When the number is less than 3, the function of the polyalkylene oxide adduct of polyhydric alcohol may not be sufficiently exerted, and when the number exceeds 300, the polymerizability of the polyalkylene oxide adduct of polyhydric alcohol may be lowered. More preferably, it is 4 or more, more preferably 5 or more, and particularly preferably 6 or more. Further, it is more preferably 100 or less, still more preferably 50 or less, and particularly preferably 25 or less.

As the polyhydric alcohol, polyglycidol, glycerin, polyglycerin, trimethylolethane, trimethylolpropane, 1,3,5-pentatriol, erythritol, pentaerythritol, dipentaerythritol, sorbitol, sorbitan, sorbitol glycerin condensate, Adonitol, arabitol, xylitol, mannitol and the like are preferable. Moreover, as sugars, saccharides of hexoses such as glucose, fructose, mannose, indoses, sorbose, growth, talose, tagatose, galactose, allose, psicose, altrose; arabinose, ribulose, ribose, xylose, xylulose, lyxose, etc. Saccharides of pentoses; saccharides of tetroses such as treose, erythrulose, erythrose; other saccharides such as rhamnose, cellobiose, maltose, isomaltose, trehalose, sucrose, raffinose, gentianose, melezitose; these sugar alcohols, sugar acids ( Also preferred are sugars; glucose, sugar alcohols; glucite, sugar acids; Furthermore, derivatives such as partially etherified products and partially esterified products of these exemplified compounds are also suitable. Among these, sorbitol is more preferable. These can use 1 type (s) or 2 or more types. Such a compound forms a polyhydric alcohol residue of a polyalkylene oxide adduct of polyhydric alcohol.

Examples of the alkylene oxide added to the hydroxyl group of the polyhydric alcohol include ethylene oxide, propylene oxide, butylene oxide, isobutylene oxide, 1-butene oxide, 2-butene oxide, trimethylethylene oxide, tetramethylene oxide, tetramethylethylene oxide, and butadiene monooxide. In addition to alkylene oxides having 2 to 8 carbon atoms such as octylene oxide, aliphatic epoxides such as dipentane ethylene oxide and dihexane ethylene oxide; alicyclic rings such as trimethylene oxide, tetramethylene oxide, tetrahydrofuran, tetrahydropyran and octylene oxide Epoxides; aromatic epoxides such as styrene oxide and 1,1-diphenylethylene oxide are suitable. These may be used alone or in combination of two or more. Among these, ethylene oxide and propylene oxide are more preferable, and ethylene oxide is more preferable.

The polyalkylene oxide adduct of the polyhydric alcohol has a group formed by one oxyalkylene group or a group formed by adding two or more oxyalkylene groups. In the group formed by adding two or more oxyalkylene groups, it is formed by one or more oxyalkylene groups, and when formed by two or more oxyalkylene groups, 2 Two or more kinds of oxyalkylene groups may be added in any form such as random addition, block addition, and alternate addition. In addition, when two or more groups formed with the said oxyalkylene group exist in one molecule, these may be the same and may differ. A group formed by adding two or more oxyalkylene groups is also referred to as a polyalkylene glycol chain.

The group formed by the oxyalkylene group is preferably mainly composed of an oxyethylene group. In this case, the “main body” means that, as described above, when two or more oxyethylene groups are present in the monomer, the majority of the total number of oxyalkylene groups is present. means.

In the above oxyalkylene group, when the “occupying the majority” is expressed in terms of mol% of oxyethylene groups in 100 mol% of all oxyalkylene groups, 50 to 100 mol% is preferable. If it is less than 50 mol%, the hydrophilicity of the group formed from the oxyalkylene group may be lowered. More preferably, it is 60 mol% or more, still more preferably 70 mol% or more, particularly preferably 80 mol% or more, and most preferably 90 mol% or more.

In the polyalkylene oxide adduct of the polyhydric alcohol, the average addition mole number of the oxyalkylene group is preferably 0 to 100. If it exceeds 100, these detergency may be reduced. More preferably, it is 1 or more, more preferably 5 or more, particularly preferably 10 or more, and most preferably 30 or more. Further, it is more preferably 80 or less, still more preferably 70 or less, particularly preferably 60 or less, and most preferably 50 or less. When the average addition mole number of the oxyalkylene group in the polyalkylene oxide adduct of the polyhydric alcohol is out of such a range, there is a possibility that the effect of improving the detergency is not sufficiently exhibited. The average added mole number is the average value of the number of moles of the oxyalkylene group added in 1 mole of the group formed by the oxyalkylene group of the polyalkylene oxide adduct of polyhydric alcohol, or It means the average value of the number of moles of the oxyalkylene group added to 1 mole of the hydroxyl group of the polyhydric alcohol that forms the polyalkylene oxide adduct of the polyhydric alcohol. The polyalkylene oxide adduct of polyhydric alcohol having an average addition mole number of 0 has no oxyalkylene group.

In the polyalkylene oxide adduct of the polyhydric alcohol, at least one of the terminals of the oxyalkylene group having a structure bonded to the polyhydric alcohol residue is preferably a hydroxyl group. More preferably, all of the terminals of the oxyalkylene group are hydroxyl groups.
As an example of the preferable form of the polyalkylene oxide adduct of the polyhydric alcohol, there may be mentioned an ethylene oxide adduct of sorbitol represented by the following formula (1).

The weight average molecular weight of the polyalkylene oxide adduct of the polyhydric alcohol is preferably 500 or more and more preferably 500000 or less. More preferably, it is 1000 or more, More preferably, it is 5000 or more, More preferably, it is 8000 or more, Most preferably, it is 10,000 or more. More preferably, it is 300000 or less, More preferably, it is 200000 or less, More preferably, it is 100000 or less, Most preferably, it is 80000 or less.

The present invention is also a cleaning composition comprising the detergent builder.
The detergent composition may be a powder detergent composition or a liquid detergent composition. However, since the detergent builder is excellent in solubility with a liquid detergent, the liquid detergent composition is preferable. In addition to the detergent builder, additives that are usually used in detergents can be used in the cleaning composition. Examples of the additives include alkali builder, chelate builder, anti-redeposition agent for preventing redeposition of contaminants such as sodium carboxymethylcellulose, anti-fouling agent such as benzotriazole and ethylene-thiourea, soil release agent, color Anti-transfer agent, softener, alkaline substance for pH adjustment, fragrance, solubilizer, fluorescent agent, colorant, foaming agent, foam stabilizer, glossing agent, bactericidal agent, bleaching agent, bleaching aid, enzyme, Dyes, solvents and the like are preferred. In the case of a powder detergent composition, it is preferable to blend zeolite.

The blending ratio of the detergent builder is usually preferably 0.1 to 20% by mass with respect to 100% by mass of the cleaning composition. More preferably, it is 0.2 mass% or more and 15 mass% or less, More preferably, it is 0.3 mass% or more, 10 mass% or less, More preferably, it is 0.4 mass% or more, 8 mass% Or less, and particularly preferably 0.5 mass% or more and 5 mass% or less. If the blending ratio of the detergent builder is less than 0.1% by mass, sufficient detergent performance may not be exhibited, and if it exceeds 20% by mass, the economy may be lowered.

The blending form of the builder in the cleaning composition may be liquid or solid, and can be determined according to the form at the time of sale of the detergent (for example, liquid or solid). You may mix | blend with the form of the aqueous solution after superposition | polymerization, you may mix | blend in the state which reduced the water | moisture content of the aqueous solution to some extent, and may mix | blend in the state solidified dry.
The above detergent composition is used only for specific applications such as household detergent synthetic detergents, textile industry and other industrial detergents, hard surface detergents, and bleach detergents that enhance the function of one of its components. Also included is a detergent.

The surfactant is at least one selected from anionic surfactants, nonionic surfactants, cationic surfactants and amphoteric surfactants, and these surfactants include one or more. Can be used. When using 2 or more types, the combined use amount of the anionic surfactant and the nonionic surfactant is preferably 50% by mass or more with respect to 100% by mass of the total surfactant. More preferably, it is 60 mass% or more, More preferably, it is 70 mass% or more, Most preferably, it is 80 mass% or more.

Examples of the anionic surfactant include alkylbenzene sulfonate, alkyl ether sulfate, alkenyl ether sulfate, alkyl sulfate, alkenyl sulfate, α-olefin sulfonate, α-sulfo fatty acid or ester salt, alkane sulfonic acid. Salt, saturated fatty acid salt, unsaturated fatty acid salt, alkyl ether carboxylate, alkenyl ether carboxylate, amino acid type surfactant, N-acyl amino acid type surfactant, alkyl phosphate ester or salt thereof, alkenyl phosphate ester Or its salt etc. are suitable.
The alkyl group or alkenyl group in the anionic surfactant may have a branched alkyl group such as a methyl group.

Examples of the nonionic surfactant include polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene alkyl phenyl ether, higher fatty acid alkanolamide or its alkylene oxide adduct, sucrose fatty acid ester, alkyl glycoxide, fatty acid glycerin. Monoesters, alkylamine oxides and the like are preferred. The alkyl group or alkenyl group in the nonionic surfactant may have a branched alkyl group such as a methyl group.
As the cationic surfactant, a quaternary ammonium salt or the like is suitable.
As the amphoteric surfactant, a carboxyl type amphoteric surfactant, a sulfobetaine type amphoteric surfactant and the like are suitable.
The alkyl group and alkenyl group in the cationic surfactant and amphoteric surfactant may be branched from an alkyl group such as a methyl group.

In general, the blending ratio of the surfactant is preferably 10 to 60% by mass with respect to 100% by mass of the cleaning composition. More preferably, they are 15 mass% or more and 50 mass%, More preferably, they are 20 mass% or more and 45 mass% or less, Especially preferably, they are 25 mass% or more and 40 mass% or less. If the blending ratio of the surfactant is less than 10% by mass, sufficient detergency may not be exhibited, and if it exceeds 60% by mass, the economy may be lowered.

When the said detergent composition is a liquid detergent composition, 0.1-75 mass% is preferable normally with respect to 100 mass% of liquid detergent compositions. More preferably, it is 0.2 mass% or more and 70 mass% or less, More preferably, it is 0.5 mass% or more and 65 mass% or less, Especially preferably, it is 0.7 mass% or more, 60 mass% Or less, more preferably 1% by mass or more and 55% by mass or less, and most preferably 1.5% by mass or more and 50% by mass or less.

The liquid detergent composition preferably has a kaolin turbidity of 200 mg / L or less. More preferably, it is 150 mg / L or less, More preferably, it is 120 mg / L or less, Especially preferably, it is 100 mg / L or less, Most preferably, it is 50 mg / L or less.
Further, the change (difference) in kaolin turbidity between when the detergent builder of the present invention is added to the liquid detergent composition and when it is not added is preferably 500 mg / L or less. More preferably, it is 400 mg / L or less, More preferably, it is 300 mg / L or less, Especially preferably, it is 200 mg / L or less, Most preferably, it is 100 mg / L or less. The kaolin turbidity can be measured, for example, by a method for measuring kaolin turbidity described later.
<Measurement method of kaolin turbidity>
A uniformly stirred sample (liquid detergent) is placed in a 10 mm thick 50 mm square cell to remove bubbles, and then Kaolin turbidity at 25 ° C. using NDH2000 (trade name, turbidimeter) manufactured by Nippon Denshoku Co., Ltd. (Tubidity, mg / L) is measured.

Proteases, lipases, cellulases and the like are suitable as enzymes that can be blended in the cleaning composition of the present invention. Of these, proteases, alkaline lipases, and alkaline cellulases that are highly active in an alkaline cleaning solution are preferred.
The amount of the enzyme added is preferably 5% by mass or less with respect to 100% by mass of the cleaning composition. If it exceeds 5% by mass, improvement in detergency cannot be seen, and the economy may be reduced.

As the alkali builder, silicate, carbonate, sulfate and the like are preferable. As the chelate builder, diglycolic acid, oxycarboxylate, EDTA (ethylenediaminetetraacetic acid), DTPA (diethylenetriaminepentaacetic acid), triphosphate, sodium tripolyphosphate, citric acid and the like are preferable. Other water-soluble polycarboxylic acid polymers other than the polyalkylene oxide adduct of polyhydric alcohol in the present invention may be used. Moreover, the polyalkylene oxide adduct of polyhydric alcohol may be used independently as a builder for detergents, and may be used together 2 or more types. Preferably, a polyalkyleneimine polyalkylene oxide adduct is used in combination. It is also suitable to use a polycarboxylic acid polymer and a polyalkylene oxide adduct of a polyhydric alcohol in combination as a detergent builder.

The above detergent composition should be a detergent with excellent dispersibility, extremely high quality agent performance and excellent stability that is less likely to cause performance degradation when stored for a long time and precipitation of impurities when held at low temperatures. Can do.

The present invention is also a cleaning builder having a polyhydric alcohol structure having a cleaning rate of 23% or more and a color tone based on the number of APHA / Hazen unit colors of 50 or less.
In the detergent builder, it is preferable that the polyalkylene oxide adduct of the polyhydric alcohol is an essential component. In this case, preferred forms of the polyhydric alcohol, polyalkylene oxide, production method, and the like are described above. It is the same as that.
The washing rate is preferably 23% or more. When the cleaning rate is 23% or more, it can be clearly recognized that the cleaning power is improved with respect to the blank. More preferably, it is 24% or more.

The color tone based on the APHA / Hazen unit color number is preferably 50 or less. When the color tone is 50 or less, the deterioration of the color tone cannot be recognized when blended as a liquid detergent. More preferably, it is 30 or less.

The detergent builder of the present invention has the above-described configuration, is excellent in compatibility with liquid detergents, can not only exhibit high basic performance in terms of washing rate, etc., but when used as a detergent builder, It is a detergent builder that has excellent color tone, no odor, excellent usability as a detergent builder, and excellent cost performance.

The present invention will be described in more detail with reference to the following examples. However, the present invention is not limited to these examples. Unless otherwise specified, “part” means “part by weight” and “%” means “mass%”.

[Synthesis Example 1]
Synthesis of sorbitol ethylene oxide 2 mol adduct (compound (1)) To a 1350 ml autoclave equipped with a stirrer was added 200 g of sorbitol and 1.30 g of 30% aqueous potassium hydroxide solution, and after sealing the vessel, with a vacuum pump, While reducing the pressure to 0.015 hPa, the temperature was raised to 140 ° C. and stirred for 30 minutes. Thereafter, 0.3 Mpa of nitrogen was added and deaerated to 0.1 MPa. This was repeated three times, and the inside of the apparatus was replaced with nitrogen. After nitrogen substitution, the internal pressure was set to 0.15 MPa and 150 ° C., and ethylene oxide was charged. Filled with 580.2g of ethylene oxide while keeping the nitrogen / ethylene oxide partial pressure during the reaction within the explosion danger range. After aging for 1 hour after filling, the temperature was lowered to 80 ° C. and deaerated. The deaerated gas was allowed to escape into water, nitrogen was added to the inside of the container, and after sufficient nitrogen substitution, the contents were taken out to obtain Compound (1).

[Synthesis Example 2]
Synthesis of 10 moles of sorbitol ethylene oxide adduct (compound (2)) 500 g of compound (1) and 2.47 g of 30% aqueous potassium hydroxide solution were added to a 3750 ml autoclave equipped with a stirrer. While reducing the pressure to 0.015 hPa with a pump, the temperature was raised to 110 ° C. and stirred for 30 minutes. Thereafter, 0.3 MPa of nitrogen was added to degas to 0.1 MPa. This was repeated three times, and the inside of the apparatus was replaced with nitrogen. After nitrogen substitution, the internal pressure was set to 0.17 MPa and 150 ° C., and ethylene oxide was charged. Filled with 1487g of ethylene oxide while keeping the nitrogen / ethylene oxide partial pressure during the reaction within the explosion danger range. After aging for 2 hours after filling, the temperature was lowered to 80 ° C. and deaerated. The degassed gas was allowed to escape into water, nitrogen was added to the inside of the container, and after sufficient nitrogen substitution, the contents were taken out to obtain Compound (2).

[Synthesis Example 3]
Synthesis of sorbitol ethylene oxide 20 mol adduct (compound (3)) In the same manner as in Synthesis Example 2, compound (3) was obtained.

[Comparative synthesis example]
As a comparative compound, a polyethylene oxide adduct of polyethylene imine obtained by ethoxylation of ethylene oxide corresponding to 20 moles per mole of nitrogen to polyethylene imine (average molecular weight 600, manufactured by Nippon Shokubai Co., Ltd.) was used.

Example 1
According to the following method, the color tone, odor, and washing rate when the builder compound for detergent (2) was used were evaluated. The results are shown in Table 1.

[Color tone]
The APHA / Hazen unit color number was measured for a 50% aqueous solution of a polyalkylene oxide adduct of polyhydric alcohol (compound (2)).
[Odor]
10 g of a 50% aqueous solution of polyalkylene oxide adduct of polyhydric alcohol ((compound (2)) was sealed in a screw cap bottle with a capacity of 20 ml, and the gas phase after standing at 40 ° C. for 24 hours was detected by GASTEC ammonia detection. The ammonia odor concentration (ppm) was measured using a tube (No. 3L).

[Washing rate]
As an artificially contaminated cloth, a cloth (STC GC C “clay dirt” cut to 4.5 cm × 7.0 cm) obtained from Scientific Service was used. For the artificially contaminated cloth, the whiteness was measured by reflectance using a colorimetric color difference meter SE2000 (manufactured by Nippon Denshoku Industries Co., Ltd.).
Pure water was added to 1.47 g of calcium chloride dihydrate to 10 kg to prepare hard water.
Add pure water to polyoxyethylene lauryl ether sodium sulfate (AES) 4.8g, polyoxyethylene lauryl ether (AE) 0.6g, sodium borate 0.6g, citric acid 0.9g, propylene glycol 2.4g The total weight was 80 g. After adjusting the pH to 8.2 with an aqueous sodium hydroxide solution, pure water was added to make a total of 100 g to prepare a surfactant aqueous solution.

Set the targot meter at 27 ° C., put 1000 mL of hard water, 5 mL of polymer aqueous solution (concentration 0.28%), 4.8 mL of surfactant aqueous solution, artificially contaminated cloth (STC GC C cloth: 10 sheets) into the pot, The mixture was stirred at 100 rpm for 10 minutes.
The artificially contaminated cloth was taken out of the pot, and the moisture of the artificially contaminated cloth was squeezed by hand. 1000 mL of hard water was put into the pot, and an artificially contaminated cloth with squeezed water was put into the pot and stirred at 100 rpm for 2 minutes.
The artificially contaminated cloth was taken out from the pot, and after the water was squeezed by hand, the artificially contaminated cloth was applied to the artificially contaminated cloth and dried while stretching the wrinkles with an iron. The whiteness of the dried artificial soiled cloth was measured by reflectance using a colorimetric color difference meter.
The cleaning rate (%) was obtained from the value measured by the above method and the following formula.
Cleaning rate (%) =
(Whiteness of the artificially contaminated cloth after washing−whiteness of the artificially contaminated cloth before washing) ÷ (whiteness of the original white cloth (EMPA221) of the artificially contaminated cloth−whiteness of the artificially contaminated cloth before washing) × 100
The higher the numerical value, the better the cleaning rate.

Example 2
The procedure was the same as Example 1 except that the compound (3) was used instead of the polyalkylene oxide adduct of polyhydric alcohol ((compound (2)). The results are shown in Table 1.

Comparative Examples 1 and 2
Implemented except that the polyalkylene oxide adduct of polyhydric alcohol ((Compound (2)) was replaced with no addition of a comparative compound (Comparative Example 1) or a polyalkylene oxide adduct of polyhydric alcohol (Comparative Example 2). The results were the same as Example 1. The results are shown in Table 1.

When Examples 1 and 2 and Comparative Example 1 are compared with each other, the cleaning rate is the same, but the examples have an overwhelming advantage in color tone and odor (ammonia odor concentration).

Example 3
According to the following method, the ability to prevent recontamination when the builder compound for detergent (2) or (3) was used was evaluated. The results are shown in Table 2.

<Recontamination prevention capability>
(1) Cotton cloth and polyester cloth were cut into 5 cm × 5 cm to prepare white cloth. The whiteness of this white cloth was measured in advance by reflectance using a colorimetric color difference meter SE-2000 type (manufactured by Nippon Denshoku Industries Co., Ltd.).
(2) Hard water was prepared by adding pure water to 1.47 g of calcium chloride dihydrate to 10 kg.
(3) 3.0 g of sodium dodecylbenzenesulfonate, 3.0 g of sodium carbonate, “Aquaric TL400” (acrylic acid / maleic acid copolymer, manufactured by Nippon Shokubai Co., Ltd.), a polycarboxylic acid polymer, is pure in 0.25 g Water was added to 50 g to prepare a surfactant aqueous solution.
(4) Set the targot meter at 25 ° C., put 1000 mL of hard water, 5.0 g of 0.2 mass% compound aqueous solution, 5.0 g of surfactant aqueous solution, 0.2 g of zeolite, 0.25 g of carbon black into the pot, Stir at 100 rpm for 1 minute.
(5) Seven white cloths were placed in a pot and stirred at 100 rpm for 10 minutes.
(6) The white cloth was drained by hand, 1 L of hard water was put in the pot, and the mixture was stirred at 100 rpm for 2 minutes.
(7) A white cloth was applied and dried while stretching the wrinkles with an iron, and then the whiteness of the white cloth was measured again with a colorimetric colorimeter.
(8) From this measurement result, the ability to prevent recontamination was determined by the following equation.
Anti-recontamination ability (%) = (whiteness after washing) / (whiteness of raw white cloth) × 100
The recontamination prevention capability indicates that the higher the numerical value, the better the recontamination prevention capability.

Comparative Example 3
It replaced with the builder compound (2) or (3) for detergents, and it carried out similarly to Example 3 except setting it as "Aquaric TL400" as a comparative compound. The results are shown in Table 2.

By using a polycarboxylic acid polymer and a polyalkylene oxide adduct of a polyhydric alcohol in combination as a builder for a detergent, the ability to prevent recontamination was improved.
This application is based on Japanese Patent Application No. 2004-356609 “Detergent Builder Containing Polyalkylene Oxide Adduct of Polyhydric Alcohol” filed on Dec. 9, 2004 (according to US Patent Law Section 119). ) Claims priority. The contents of this application are incorporated herein in their entirety.

Claims (6)

A detergent builder comprising a polyalkylene oxide adduct of a polyhydric alcohol as an essential component. The detergent builder according to claim 1, wherein the detergent builder is for a liquid detergent. The detergent builder according to claim 1 or 2, wherein the detergent builder has a color tone based on the number of APHA / Hazen unit colors of 1000 or less. A detergent composition comprising the detergent builder according to claim 1, 2 or 3. A cleaning builder having a polyhydric alcohol structure, wherein the cleaning rate is 23% or more, and the color tone based on the number of APHA / Hazen unit colors is 50 or less. 6. The detergent builder according to claim 5, wherein the detergent builder has an ammonia odor concentration of 3 ppm or less.