JPH0560520B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a detergent composition that is excellent in preventing re-staining during washing. [Prior Art] With the recent development of the petrochemical industry, the proportion of synthetic fibers in clothing has increased. Most chemical fibers are made of hydrophobic substances, so they have a very high affinity for oily substances. Therefore, dirt removed during washing is redeposited due to electrostatic attraction, etc., which is a major cause of darkening of clothes. By the way, as a restaining prevention agent for stains, CMC is used for cotton, and water-soluble polymers such as PEG and PVA are said to be effective for chemical fibers. Conventionally, polyphosphoric acid has been used as a detergent builder, but due to environmental concerns, it has been replaced with zeolite. [Problems to be Solved by the Invention] However, although this zeolite is excellent in water softening action, it is extremely poor in other builder properties such as dirt dispersion ability and buffering ability. The same goes for the re-fouling prevention ability, and even when PEG and CMC are used together, it is not as good as detergents using polyphosphates. [Means to solve the problem] Therefore, as a result of intensive research to provide a phosphorus-free detergent using zeolite that has good recontamination prevention ability, we found that α-sulfo fatty acid ester salt and Purlock type detergent It has been discovered that adding PEG to a copolymer combination system has an excellent effect regardless of whether the fabric to be washed is cotton fabric or chemical fiber, and based on this knowledge, the present invention has been completed. That is, the present invention comprises the following four components (a), (b), (c) and (d) (a) General formula (1) (However, R ₁ is a C ₆ - C ₂₀ alkyl group, R ₂ is a C ₁ -
( _b ) General formula (2) (However, m and p are numbers from 5 to 100, and n is a number from 5 to 200) 0.1 to 20% by weight of a Pluronic copolymer (c) 0.5 to 20% by weight of polyethylene glycol with an average molecular weight of 1000 to 20,000 (d) A cleaning composition containing 5 to 35% by weight of zeolite is provided. The α-sulfo fatty acid ester salt which is component (a) of the composition of the present invention has 10 to 20 carbon atoms, preferably
Mention may be made of derivatives of esters of linear saturated fatty acids having 12 to 18 carbon atoms and saturated monohydric alcohols having 1 to 3 carbon atoms, preferably methanol and ethanol. Sodium salts of sulfo fatty acid esters prepared from natural hydrogenated fatty acids and fatty acid polymers, such as stearic acid methyl ester, palmitic acid ethyl ester, hydrogenated palm kernel fatty acid methyl ester or hydrogenated tallow fatty acid methyl ester α-sulfonic acid Preference is given to using the sodium salt. α-Sulfofatty acid ester salts generally contain dependent amounts of α-sulfofatty acid disalts, which can result from hydrolysis of the ester bonds during industrial post-treatments, for example bleaching with H ₂ O ₂ or neutralization.
This di-salt is present in amounts of 5 to 25% by weight in industrial products without impairing the effectiveness of the product. In the following, α-sulfofatty acid ester salts therefore mean industrial di-salt-containing products. Component (a) is blended in an amount of 1 to 35% by weight, preferably in a range of 5 to 25% by weight. If it is less than 1% by weight, there is no sufficient effect, and even if it is added more than 35% by weight, no particular effect can be obtained. The Pluronic type copolymer of component (b) is represented by the above-mentioned general formula (2), where m and p are numbers from 5 to 100, and n is a number from 5 to 200, but preferably both m and np are 10.
~80. Also, the molecular weight is 900 or more, especially 1000~
10000 and the ethylene oxide content is 20-80% by weight,
Particularly preferred is 35 to 55% by weight. Component (b) is blended in a range of 0.1 to 20% by weight,
Preferably it is in the range of 1 to 10% by weight. If the amount is less than 0.1% by weight, no sufficient effect will be obtained, and if it is more than 20% by weight, no particular effect will be obtained. The polyethylene glycol component (c) has an average molecular weight of 1,000 to 20,000. average molecular weight
If it is less than 1,000 or more than 20,000, the re-contamination prevention ability will decrease when water hardness is high. It is recommended to mix this in the detergent in an amount of 0.5 to 20% by weight, preferably in a range of 1 to 10% by weight. At 0.5% by weight or less, there is no special effect, and at 20% by weight or more, the synergistic effect becomes constant. As the zeolite of component (d) in the composition of the present invention, commercially available zeolites such as A type, X type or amorphous synthetic zeolite can be used, and the content thereof is 5 to 35% by weight, preferably 10 ~
It is in the range of 20% by weight. If the content of this zeolite is less than 5% by weight, the physical properties of the powder during production will be poor, and moreover, satisfactory detergency will not be obtained.
If it exceeds % by weight, zeolite particles will adhere to the items to be washed, which is undesirable. The following various surfactants can be used in combination with the cleaning composition of the present invention. As anionic surfactants, linear or branched alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or Examples include alkenyl ether carboxylates, amino acid type surfactants, N-acylamino acid type surfactants, alkyl or alkenyl phosphates or salts thereof. The anionic surfactant is preferably blended in an amount of 15 to 35% by weight, including component (a), which is an essential component of the present invention, in a general detergent composition. Examples of amphoteric surfactants include carboxy or sulfobetaine type surfactants, and nonionic surfactants include polyoxyalkylene alkyl or alkenyl ethers, polyoxyethylene alkyl phenyl ethers, higher fatty acid alkanolamides or alkylene oxide additions thereof. Examples of cationic surfactants include quaternary ammonium salts, sucrose fatty acid esters, fatty acid esters, fatty acid glycerin monoesters, and alkylamine oxides. Other auxiliary additives commonly used in the composition of the present invention,
For example, phosphates such as tripolyphosphate, pyrophosphate,
Salts of ethane-1,1-diphosphonic acid, salts of phosphonocarboxylic acids such as 2-phosphonobutane-1,2-dicarboxylic acid, salts of amino acids such as aspartic acid and glutamic acid, nitrilotriacetate, ethylenediamitetraacetate, etc. Divalent metal ion scavengers such as polyelectrolytes such as aminopolyacetate, polyacrylic acid, and polyaconitic acid, non-dissociated polymers such as polyvinyl alcohol and polyvinylpyrrolidone, and salts of organic acids such as diglycolic acid and oricicarboxylate. , alkaline agents or inorganic electrolytes such as silicates, carbonates, and sulfates, recontamination inhibitors such as polyvinylpyrrolidone and carboxymethylcellulose, enzymes such as alcalase, lipase, and cellulose,
paratoluenesulfonate, sulfosuccinate,
Anti-caking agents such as talc and calcium silicate, sodium percarbonate, sodium perborate 1
or bleaching agents such as tetrahydrate, bleach activators such as triacetyl cyanurate, sodium p-acetoxybenzenesulfonate, peroxide stabilizers such as magnesium silicate, magnesium sulfate, tertiary butyl It may contain antioxidants such as hydroxytoluene and gistyrenated cresol, fluorescent dyes, blue tints, fragrances, etc., but these are not particularly limited and may be blended depending on the purpose. [Effects of the Invention] The detergent composition of the present invention exhibits excellent effects that could not be achieved with conventional zeolite-containing detergents, that is, good re-stain prevention ability for both cotton fabrics and synthetic fibers. [Example] The present invention will be further explained with reference to Examples below. Example 1 The recontamination prevention ability of cleaning compositions having the formulations shown in Table 1 (1 to 5 are inventive products and 6 to 9 are comparative products) was evaluated by the following method. The results are also shown in Table 1. Recontamination prevention ability evaluation test method Test cloth Cotton broadcloth, nylon tricot 10
cm 3 sheets each of 10cm Dirt Carbon black 0.25g/and clay 2.5g/ Conditions Temperature 20℃ Hardness 4DH Concentration 0.133% Togotometer 100r.pm 10 minutes contaminated Bath ratio 12 test cloths / Rinse with running water Adjust contaminated solution Dirt components in washing solution Add (0.25 g of carbon black or 2.5 g of Klui), stir well, completely disperse using an ultrasonic disperser, and immediately contaminate with a tergotometer. Drying Press 130℃, 30sec Measurement Measure the reflectance of the original fabric of each of the four types of fibers and the contaminated test fabric. Recontamination prevention rate (%) = R(S) * 100/R(O) R(O) = Reflectance of original fabric R(S) = Reflectance after contamination Find the recontamination prevention rate using the formula. 【table】

Claims (1)

[Claims] 1. The following four components (a), (b), (c) and (d) (a) General formula (1) (However, R ₁ is a C ₁₀ to C ₂₀ alkyl group, R ₂ is a C ₁
~ _C4 alkyl group, M represents an alkali metal or alkaline earth metal) α-sulfo fatty acid ester salt 1 to 35% by weight (b) General formula (2) (However, m and p are numbers from 5 to 100, and n is a number from 5 to 200) 0.1 to 20% by weight of a Pluronic copolymer (c) 0.5 to 20% by weight of polyethylene glycol with an average molecular weight of 1000 to 20000 % (d) A cleaning composition containing 5 to 35% by weight of zeolite.