JPH0925498A - Composition for dry cleaning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition excellent in detergent effect, soft feeling after cleaning, safety for human body, working environment and drying speed with slight reverse pollution by cleaning of the material to be cleaned, containing a specific polyolefin and a dry soap. SOLUTION: This composition contains (A) 97-99.5wt.%, especially 97.2-99.2wt.% of a low-molecular weight polyolefin having a side chain (e.g. low-molecular weight polybutene or low-molecular weight polypropylene having 150-210 deg.C boiling point by a distillation method defined in JIS K-2254) and (B) 3-0.5wt.%, especially, 2.8-0.8wt.% of a dry soap (e.g. anionic, cationic, amphoteric, nonionic, cation-nonion complex-based, especially anion-nonion complex-based surfactant).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dry cleaning composition which is safe in handling and excellent in cleaning effect.

[0002]

2. Description of the Related Art Conventionally, as a composition for dry cleaning, for example, 1,1,1-trichloroethane, trichloroethylene, perchloroethylene, 1,1,2-trichloroethane as a solvent, in addition to petroleum-based solvents such as kerosene fractions, etc. It is known to use a chlorine-based solvent such as CFC or the like, or a fluorine-based solvent such as CFC 113. Which solvent is to be used is appropriately determined from the above solvents according to the purpose of use or the type of the contaminated cloth and the degree of contamination in practice.

[0003]

By the way, when, for example, a petroleum-based solvent or a chlorine-based solvent is used among the conventional cleaning solvents as described above, an operator may inhale the gas or the gas may cause skin damage. Is absorbed into the body from the body, invading the central nervous system and autonomic nervous system of the worker,
Dizziness, headache, and poor vision develop. It is also known that hematopoietic disorders and skin inflammation occur as the degree of absorption and suction of the gas progresses.

For this reason, when carrying out the work using the above-mentioned solvent, the regulation by "organic solvent poisoning prevention rule" or "work environment measuring method" is added, and sufficient ventilation in the work place and necessary Accordingly, workers are obliged to wear an air-supply mask, and gloves and safety glasses are also required to be worn. When one of the fluorine-based solvents is used, the solvent is recovered by making the cleaning equipment a closed system because it is relatively expensive, but the recovery equipment for this purpose becomes large, As a matter of course, the recovery cost is also high.

Further, it has been proposed to use normal paraffin or hydrogenated kerosene as a solvent for the safety of handling, but a dry cleaning composition using such a solvent has a problem that the cleaning effect is poor. there were.

An object of the present invention is to provide a dry cleaning composition which is safe to handle, has an excellent cleaning effect, and is inexpensive.

[0007]

[Means for Solving the Problems] A cleaning composition according to the present invention for achieving the above object comprises 97 to 99.5% by weight of a low molecular weight polyolefin having a side chain and 3 to 0.5% by weight of dry soap. The composition for dry cleaning comprises:

The low molecular weight polyolefin having a side chain can be obtained, for example, by homopolymerization or copolymerization of an olefin in the presence of an aluminum trichloride catalyst, but the kind of the catalyst, the polymerization method and the like are not particularly limited. It is not something that will be done.

The olefin has 2 to 12 carbon atoms.
Alkenes of, preferably C 2-8 alkenes can be mentioned. Among these, α-olefins such as ethylene, propylene, butene, hexene, 4-methyl-1-pentene, octene and vinylcyclohexene, and mixed olefins thereof are preferable, and propylene and butene are particularly preferable.

The thus obtained low molecular weight polyolefin having a side chain has a boiling point range of IBP of about 100 ° C. to E determined by the distillation method specified in JIS K2254.
P has a liquid form of about 280 ° C.,
Among them, a low molecular weight polyolefin containing a side chain having a boiling point of 150 to 210 ° C. obtained by the above-mentioned distillation method can be most preferably used for cleaning.

When the boiling point of the low-polymerization degree polyolefin used as a cleaning solvent is lower than about 150.degree. C., the flash point thereof becomes lower than room temperature, which complicates the management of fire when handling the solvent. On the contrary, when the boiling point exceeds about 210 ° C., the rate of volatilization is remarkably reduced, and it takes a long time to dry the object to be cleaned, which is not desirable.

The low molecular weight polyolefin obtained as described above can be used as it is, but a low molecular weight polyolefin obtained by separately performing hydrogenation treatment is preferable. This is because the low molecular weight polyolefin that has been subjected to the hydrogenation treatment has no odor and is excellent in storage stability.

Next, examples of the dry soap include anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants.
These surfactants may be used alone or in combination of two or more. However, when two or more kinds are used in combination, it is not preferable to use the cationic surfactant and the anionic surfactant in combination, and the combination of the cationic surfactant and the nonionic surfactant [cationic nonionic complex type interface Activator], a combination of an anionic surfactant and a nonionic surfactant [anionic nonionic complex surfactant] is recommended.

Due to the difference in polar groups in the surfactant,
The cleaning composition of the present invention has different effects in cleaning, and, for example, a cleaning composition containing an anionic surfactant as dry soap has good detergency. Can be inflexible,
The composition for dry cleaning in which a cationic surfactant or a cationic surfactant and a nonionic surfactant are used in combination has excellent flexibility of the washed object,
Detergency may not be exerted so much. When the matters related to the cleaning of the dry cleaning composition are summed up, the combination of the anionic surfactant and the nonionic surfactant is preferable. As such a dry soap, the product name “Litesol Soft” (Kyoeisha Yushi Co., Ltd.) is used. ), “Sandlex Drymax Crystal” (Alves Co., Ltd.), “Genbuclean A2” (Genbu Co., Ltd.)
Manufactured by Nippon Oil & Fats Co., Ltd.).

Here, as the anionic surfactant,
For example, carboxylic acid salts, sulfonic acid salts, sulfuric acid ester salts, phosphoric acid ester salts and the like can be mentioned. Examples of the carboxylic acid salts include fatty acid soaps such as lauric acid, myristic acid, palmitic acid, stearic acid, stearic acid, and oleic acid, which are sodium or potassium salts of fatty acids having 12 to 18 carbon atoms, or alkyl ether carboxylates. Etc. can be mentioned. Examples of the sulfonate include alkylbenzene sulfonate, alkane sulfonate, dialkyl sulfosuccinate ester salt, α-olefin sulfonate, and the like. Examples of the sulfate ester salt include sulfated oil, higher alcohol sulfate ester salt, and alkyl ether sulfate salt. Examples of the phosphoric acid ester salt include alkyl ether phosphoric acid ester salts and alkyl phosphoric acid ester salts. Among the above various anionic surfactants, fatty acid soap, alkylbenzene sulfonate, alkane sulfonate, α-olefin sulfonate and the like are preferable.

Examples of the cationic surfactant include aliphatic amine salts and aliphatic quaternary ammonium salts. Examples of the amphoteric surfactant include carboxybetaine type. Examples of nonionic surfactants include polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene polyoxypropylene block polymer, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyethylene glycol fatty acid ester. , Polyoxyethylene alkylamine and the like.

The dry cleaning composition of the present invention has a dry soap content of 3 to 3 relative to the total amount of the low molecular weight polyolefin having a side chain and the dry soap.
Within the range of 0.5% by weight, preferably 2.8 to 0.8% by weight (97 to 9 for the low molecular weight polyolefin).
9.5% by weight, preferably in the range of 97.2-99.2% by weight).

If the content of the dry soap exceeds 3% by weight, the object to be washed becomes sticky after washing, and the significance of washing is lost. Further, the content of the dry soap is 0.5
If it is less than 10% by weight, it may recontaminate during cleaning due to lack of cleaning power, causing stains on the item to be washed, generating static electricity, or losing flexibility of the item to be washed. It causes inconvenience.

[0019]

EXAMPLES Hereinafter, several examples and comparative examples will be shown.
The configuration and effects of the present invention will be described more specifically.

(Example 1) Isoparaffinic solvent [1BP 170 ° C., obtained by hydrogenating low molecular weight polybutene]
EP 192 ° C] and anionic nonionic complex soap [mixture of anionic surfactant and nonionic surfactant, trade name Litesol Soft, manufactured by Kyoeisha Yushi Co., Ltd.]
The article to be cleaned shown in Table 1 was washed with a dry cleaning composition consisting of a mixture with 2.5% [concentration with respect to the solvent]. The cleaning temperature was room temperature and the cleaning time was 13 minutes. After washing, the article to be washed was dried for 35 minutes while being heated to 38 ° C. by a dryer (manufactured by Shin Nihon Kikai Co., Ltd.).

The following evaluation was performed on the article to be cleaned after drying. The results are shown in Table 1. {Cleaning rate} The cleaning rate was measured according to the test method specified in JIS L0860. The cleaning rate is expressed as (W ₀ −W ₂ ) / (W ₁ −W ₂ ) × 100, where W ₁ , W ₂ and W ₀ are the whitenesses of the original cloth, the contaminated cloth and the cloth after cleaning. It was
The larger the cleaning rate, the greater the cleaning effect. {Reverse Contamination Rate} The contaminated cloth was washed together with 15 kg of the object to be cleaned as a test cloth, and after drying, the reflectance of the test cloth was measured by a reflectometer and evaluated. The smaller the number of the reverse pollution rate, the smaller the reverse pollution.

Comparative Examples 1 and 2 Instead of the isoparaffinic solvent obtained by hydrogenating low molecular weight polybutene, in Comparative Example 1, a normal paraffinic solvent [IBP 1
70 ° C., EP 174 ° C., trade name Nikko N-10, manufactured by Nikko Co., Ltd.], and in Comparative Example 2, hydrogenated kerosene solvent [IBP 159 ° C., EP 193 ° C., trade name Exol D-40, Exxon KK] was used, and the same procedure as in Example 1 was performed. The results are shown in Table 1.

[0023]

[Table 1]

(Examples 2 to 4, Comparative Examples 3 and 4) The same procedure as in Example 1 was repeated except that the concentration of dry soap in the above Examples was changed to the amounts shown in Table 2, and the above Example 1 was repeated. Evaluation was made in the same manner as in. The results are shown in Table 2 together with the results of Example 1.

[0025]

[Table 2]

(Examples 6 to 9) The same procedure as in Example 1 was repeated except that the type of dry soap was changed to that shown in Table 3, and the cleaning rate and the reverse contamination rate were the same as in Example 1. And the flexibility was evaluated as follows. The flexibility of the object to be cleaned after cleaning in Example 1 was also evaluated. The results are shown in Table 3 together with the results of Example 1.

[0027]

[Table 3]

Note: Types of dry soap * 1: Anion nonion composite dry soap, Litesol Soft [Kyoeisha Yushi Co., Ltd.] * 2: Anion dry soap, Lightmate DX [Kyoeisha Yushi Co., Ltd.] * 3: Nonionic dry soap, Hyalin [Nichika Chemical Industry Co., Ltd.] * 4: Cationic dry soap, Nikkasilky [Nika Chemical Industry Co., Ltd.] * 5: Cationic nonionic composite dry soap, Rival DX [Made by Lion Trading Co., Ltd.]

Evaluation of flexibility ⊚: Very good to the touch. ◯: The feel is good. Δ: The feel is bad. It's rubbing.

[0030]

The dry cleaning composition of the present invention contains the side chain-containing low-molecular-weight polyolefin and dry soap in a specific ratio as described above, and therefore has an excellent cleaning effect. Is less likely to be reversely contaminated, and has an excellent cleaning effect such as a soft finish of the object to be cleaned after cleaning. Moreover, since the side chain-containing low-molecular-weight polyolefin is used, it is possible to improve the safety for the human body and at the same time improve the working environment. Furthermore, in a dry cleaning composition containing a side chain-containing low molecular weight polyolefin, dry soap and at least one selected from the group consisting of petroleum-based solvents, chlorine-based solvents, and fluorine-based solvents, In addition to the above effect, there is an effect that the drying speed is high and the cleaning and drying process can be shortened, and the cleaning can be speeded up.

Claims (2)

[Claims] 1. A low molecular weight polyolefin 9 having a side chain.
A dry cleaning composition comprising 7 to 99.5% by weight and dry soap (3 to 0.5% by weight). 2. The dry cleaning composition according to claim 1, wherein the low molecular weight polyolefin having a side chain is low molecular weight polybutene and / or low molecular weight polypropylene.