JPH11323381A - Detergent for dry cleaning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent which has excellent ability for solubilizing water and is capable of giving a homogeneous pre treatment agent from a petroleum-based solvent by formulating a sulfosuccinate salt, a phosphate ester, an alkanolamine, a sorbitan ester of a fatty acid and a petroleum-based solvent. SOLUTION: A sulfosuccinate salt of formula I (wherein R<1> and R<2> are each 6-18C alkyl or alkenyl; and X is an alkali metal or alkaline earth metal) and a phosphate ester of formula II (wherein R is 8-20C alkyl or alkenyl; R' is -OH or RO-(CH2 CH2 O)n -; and n is 1-6 on the average) are employed. Preferably are formulated 5-30 wt.% of the sulfosuccinate salt, 5-20 wt.% of the phosphate ester, 1-5 wt.% of an alkanolamine, 10-50 wt.% of a sorbitan ester of a fatty acid and 15-79 wt.% of a petroleum-based solvent. As the alkanolamine, triethanolamine is particularly preferable. Preferably, the sorbitan ester of a fatty acid is one having an HLB value of about 4-10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dry cleaning agent using a petroleum solvent as a cleaning medium.

[0002]

2. Description of the Related Art In dry cleaning using a petroleum-based solvent comprising a mixture of paraffinic, naphthenic, aromatic hydrocarbons, etc., removal of water-soluble dirt and solid dirt is required.
Various surfactants have been used to prevent re-contamination, prevent static charge, and impart flexibility. The cleaning agent for dry cleaning is a liquid cleaning agent which generally contains 5 to 80% by weight of a surfactant, a petroleum solvent, a viscosity reducing agent, a corrosion inhibitor, and the like. It is used at a ratio of 0.1 to 5% by volume based on the petroleum solvent.

However, in dry cleaning using a petroleum-based solvent, prior to cleaning in a dry machine,
In order to remove water-soluble stains and stains that are difficult to remove by washing, it is common to wash after spraying or brushing with a treatment liquid. The general formulation of this treatment liquid is petroleum solvent / dry cleaning detergent / water = 8/1/1
(Volume ratio), and this treatment liquid is usually called a sasara liquid.

[0004] When a uniform sasara solution cannot be prepared, the amount of water used is reduced, and the effect of removing water-soluble dirt is small. In order to prepare a uniform sasara solution, a dry cleaning detergent using a petroleum-based solvent is required to have high water solubilizing ability.

[0005]

Therefore, there is a need for a dry cleaning detergent which has excellent water solubilizing ability and can prepare a uniform sasara solution in petroleum solvents.

[0006]

DISCLOSURE OF THE INVENTION The present inventors have conducted intensive studies on a dry cleaning detergent capable of preparing a uniform sasara solution, and as a result, have found that certain anionic surfactants, alkanolamines and nonionic surfactants have been identified. It has been found that a composition containing is suitable for this purpose, and the present invention has been completed.

That is, the present invention provides: (A) a sulfosuccinate represented by the following general formula (1):

[0008]

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Wherein R ¹ and R ² represent an alkyl or alkenyl group having 6 to 18 carbon atoms, and X represents an alkali metal or an alkaline earth metal. (B) Phosphorus represented by the following general formula (2) Acid ester

[0010]

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Wherein R is an alkyl or alkenyl group having 8 to 20 carbon atoms, and R ′ is —OH or RO— (CH ₂ CH
₂ O) _n -, _n provides dry cleaning detergent containing average represents the number of 1 to 6 in) (C) an alkanolamine (D) sorbitan fatty acid ester and (E) petroleum solvent.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The component (A) of the present invention is a sulfosuccinate represented by the general formula (1), wherein R ¹ and R ²
Is preferably an alkyl group or an alkenyl group having 6 to 12 carbon atoms, and X is preferably sodium.
Preferred components (A) are dialkyl sulfosuccinates, specifically sodium dioctyl sulfosuccinate, di-2
-Sodium ethylhexylsulfosuccinate, sodium didecylsulfosuccinate, sodium didodecylsulfosuccinate and the like.

The component (B) of the present invention is a phosphate ester represented by the general formula (2), wherein R is preferably a linear or branched alkyl group having 10 to 16 carbon atoms, and n is an average. And a number of 2 to 4 is preferred. In addition, the mono- and di-phosphates are about 1/1 of the mono- and di-phosphates alone.
A particularly good synergistic effect of water solubilization is seen in the sesquiphosphate, which is a 1 molar mixture.

Preferred alkanolamines for the component (C) of the present invention include monoethanolamine, diethanolamine, triethanolamine and the like, with triethanolamine being particularly preferred.

The component (D) of the present invention is preferably HLB
It is a sorbitan fatty acid ester having a value of about 4 to 10, and sorbitan monolaurate (HLB = 8.6) is exemplified.

The petroleum solvent as the component (E) of the present invention is not particularly limited, and may be a paraffinic hydrocarbon (having a boiling point of 1).
20 to 220 ° C.), and those containing a naphthenic hydrocarbon or an aromatic hydrocarbon and usually used as a solvent for dry cleaning.

The composition of the present invention comprises the above (A), (B),
Components (C), (D) and (E) are 5 to 30% by weight, 5 to 20% by weight, 1 to 5% by weight, and 10 to 50% by weight, respectively.
And 15-79% by weight, especially 10-22% by weight, 8-1
It is preferable to contain 2% by weight, 2.4 to 3.6% by weight, 25 to 42% by weight and 20 to 55% by weight. Within this range, a composition that is stable, has excellent water-solubilizing ability, and can prepare a uniform sasara solution can be obtained.

[0018] In addition to these essential components, the dry cleaning detergent of the present invention further comprises a lower alcohol such as methanol, ethanol, isopropanol and butanol, and a lowering agent such as butyl cellosolve as a liquid stability improving and viscosity reducing agent during storage. Polyhydric alcohol ethers and the like can be blended. In addition, a metal corrosion inhibitor such as benzotriazole, an antibacterial agent, water and the like can be added.

[0019]

Examples Examples 1-4 and Comparative Examples 1-2 Dry cleaning detergents having the compositions shown in Table 1 were prepared and tested for water solubilizing ability. Table 1 shows the results.

<Water solubilizing ability test> (1) State at the time of mixing Petroleum solvent for dry cleaning (Exol D-4)
0, manufactured by Exxon Chemical Co., Ltd.) / Dry-cleaning detergent / ion-exchanged water = 8 ml / 1 ml / 1 ml was placed in a test tube, and the state when mixed well with shaking was visually observed. In the evaluation, it is a condition of easy preparation of the sasara liquid that it should be transparent even at the time of mixing. ：: Transparent at the time of mixing Δ: Translucent at the time of mixing ×: Opaque at the time of mixing (2) Solubilization amount of water 100 ml of Exol D-40 in a 200 ml emulsification test tube.
And 1 ml of a cleaning agent for dry cleaning, and the mixture was stirred. Then, ion-exchanged water was added little by little using a micro syringe, and the mixture was vigorously stirred each time. After stirring, the mixture was allowed to stand and visually observed, and the amount of ion-exchanged water until the solution became cloudy was defined as the maximum solubilized amount (ml).

[0021]

[Table 1]

[0022]

The cleaning agent for dry cleaning of the present invention is uniform and transparent, has excellent phase stability, and has excellent water solubilizing ability. Can be prepared.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 3/43 C11D 3/43 10/02 10/02

Claims (1)

[Claims] 1. A sulfosuccinate represented by the following general formula (1): ## STR1 ## (Wherein, R ¹ and R ² represent an alkyl group or alkenyl group having 6 to 18 carbon atoms, and X represents an alkali metal or an alkaline earth metal). (B) Phosphate represented by the following general formula (2) Formula 2 (Wherein, R is an alkyl group or alkenyl group having 8 to 20 carbon atoms, R ′ is —OH or RO— (CH ₂ CH ₂ O) _n —, n
(C represents an average of 1 to 6) (C) Alkanolamine (D) Sorbitan fatty acid ester and (E) a petroleum solvent.