JPH0479994A - Removal of blot and stain on cloth - Google Patents

Abstract

PURPOSE:To remove simply even ringlike blot formed by conventional processes as well as an oily stain attached to clothes without forming the ringlike blot by removing blots and stains on the clothes by the use of liquid composed of a mixture of specified organic solvent and polysiloxane. CONSTITUTION:A blot removing method which causes no ring-like blot is provided by adding one kind or at least two kinds of mixture of polysiloxane to one kind or at least two kinds of mixture of organic solvent. As the kinds of organic solvent are used petrolic organic solvent; mixture of paraffinic, naphthenic and aromatic material, mixture of paraffinic naphthenic, single paraffinic undecanenormal paraffin and dodecane normal paraffin, etc. 10-99vol.% of mixture of a single or at least two kinds of said solvent is used. Also, as polysiloxane is used 1-90vol.% of mixture of one kind or at least two kinds of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tetradecamethylcycloheptanesiloxane, dodecamethylcyclohexanesiloxane and hexanemethylcyclotrisiloxane.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for removing stains from clothing. More specifically, the present invention relates to a method for removing oil-based stains without producing ring stains, and a method for removing ring stains caused by conventional oil-based stain removal treatments.

[Conventional technology]

Stain removal refers to the use of special skills to remove localized dirt (hereinafter referred to as stains) that cannot be removed by normal cleaning processes.

This is done in the following cases:

■If the stain is partially attached and there is no need to wash the entire garment.

■If you cannot wash the entire clothing because fleas are partially attached.

■If the stain remains even after washing the entire clothing.

■Even before washing, there are stains that cannot be removed by washing alone.

The present invention relates to a method for removing stains in cases (1) and (2).

In general, stains on clothing can be divided into four types: oil-soluble stains, water-soluble stains, stains that require chemical means, and insoluble stains.

Oil-soluble stains are stains that dissolve in oil-soluble organic solvents such as machine oil, cooking oil, eye shadow, lipstick rings, and perchloroethylene, but do not dissolve in water.

Water-soluble stains are stains that dissolve in water but cannot be removed by organic solvents, and refer to stains that are more complex due to sweat, fruit, soy sauce, etc.

Stains that require chemical means are old chisels that have deteriorated due to iron rust and oxidation, and cannot be removed with water or organic solvents, but can be removed using chemical means such as oxidation and reduction reactions.

Insoluble stains include soot, ink, mud splatter, water, organic solvents,
It is a stain that does not dissolve in any plasticizing chemicals and does not come off even with bleaching.

Stains that adhere to the original fabric and sewing manufacturers are caused by dirt during transportation,
Sewing machine oil, chalk, colored pencils, etc.

These stains usually belong to oil-soluble stains.

Conventionally, it has been removed using an organic solvent. Examples of organic solvents include petroleum-based organic solvents, chlorinated organic solvents, and fluorine-based organic solvents. The petroleum solvent is a mixture of paraffinic, naphthenic, and aromatic solvents (for example, 60:25:
15) vol 1%, mixture of paraffinic and naphthenic (eg 50:50) vol.

There are also paraffin-based products. Chlorinated organic solvent nihaperchlorethylene (also known as tetrachlorethylene) and 1
・l・1゛trichloroethane, and fluorine-based organic solvents include F-113 (trichlorofluoroethane), which is used for cleaning.

Generally, in garment factories, ml is used as an oil-soluble stain remover.
・1-Trichloroethane is mainly used. Some companies use fluorinated solvent F-113,
It is thought that it will become unusable in the near future due to global environmental protection issues such as depletion of the ozone layer.

Petroleum-based solvents were flammable, and Berchlorethylene was rarely used alone due to toxicity.

Textile materials for clothing include natural fibers and synthetic fibers.

There are four main categories: semi-synthetic fibers and recycled fibers. Natural fibers include cotton, linen, silk, and wool.2Synthetic fibers include nylon, polyester, acrylic, and vinylon.Semi-synthetic fibers include acetate, triacetate, and Promix, and recycled fibers include rayon and cupro.

In recent years, polyester-based ultrafine fibers, called new synthetic fibers, have made significant inroads into the clothing field. It was developed with the aim of making synthetic fibers similar to natural fibers, especially silk. It not only imitates silk, but also enhances the individual characteristics of silk to the unique texture of synthetic fibers, creating a new silky feel, peach skin touch, and powder touch.

There is a product group called Dry Touch. Some people call it "Royal Sound" because it is a synthetic fiber that has the sound of silk.

Previously, silky synthetic fibers were mainly used for blouses.

So-called new synthetic fibers are increasingly being used as general-purpose materials for outerwear. However, this new material has many problems that traditional materials do not have. Heat shrinkage due to steam, heat shrinkage due to ironing, shine, and sewing 1
Bunkering that sometimes occurs, ring stains caused by stain removal, etc. In particular, ring stains caused by stain removal VC are a major problem.

To remove stains in garment factories and dry cleaning factories, the above-mentioned organic solvent is sprayed onto the stained areas using a military spray gun or compressed air. At that time, place the clothing on a vacuum stand.

The organic solvent may be sprayed or dropped from above while suctioning from below the stained area. If you don't have a vacuum stand, you may put a towel underneath and place the clothes on top to remove the stain.

After thoroughly spraying or dropping the organic solvent to remove the stain, evaporate the organic solvent by drying it naturally, by suctioning it with a vacuum stand, or by heating it with something like a hair dryer. Sometimes.

In particular, when removing oily stains from clothing made of ultrafine polyester fibers called new synthetic fibers using 1.1.1 trichloroethane, the stain itself is removed, but a ring-shaped stain remains around the stain. This ring-shaped stain is referred to as the ring stain, and is a major problem in removing stains from these new synthetic fibers. Even if Kl.1.1 trichloroethane is similarly applied to remove such stains, as is conventionally done, the stains will only spread further, and the situation will often worsen. Other organic solvents will spread the stain in the same way and only increase the problem, but will not solve the two problems.

[Means for solving problems]

The present invention has been arrived at as a result of painstaking research in view of the current problems as described above.

That is, the present invention aims to provide a stain removal method that does not produce ring stains by adding one or more mixtures of organic solvents and polysiloxanes.

The present invention further provides a method for erasing and removing ring stains formed by conventional stain removal methods using the above stain removal method. and.

The organic solvent and polysiloxane used above and their mixing ratio are as follows.

(1) Organic solvent Petroleum-based organic solvent; paraffin-based, naphthene-based.

Aromatic mixtures (e.g. 60:25:
15 vol 1%) t A mixture of paraffin and naphthenic (eg 50:50 vol 1%), a paraffin alone (undecane normal paraffin, dodecane normal paraffin, tridecane normal paraffin, tetradecane normal paraffin).

isoparaffinic), naphthenic chlorinated organic solvent; perchlorethylene (tetrachlorethylene), 1.1.l trichloroethane.

Trichlorethylene fluorine organic solvent: F-113 (trichlorotrifluoroethane) CCl2FCClF2 alternative CFCFC-225Ca CF3CF2CHCl2.

HCFC-225Cb CCl2F2CF2CHCIF
10-99v of the above solvents alone or in a mixture of two or more
o1% (2) Polysiloxane octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tetradecamethylcycloheptasiloxane, dodecamethylcyclohexasiloxane, hexamethylcyclotrisiloxane 1 to 9 of the above one or a mixture of two or more Ethylene glycol ethers can also be added to the compositions of the present invention. Ethylene glycol ethers penetrate dirt well and swell or emulsify it, making it easier to remove dirt. A preferred specific example thereof is ethylene glycol quinophthyl ether (butyl selonup).
There is. The appropriate amount is about 10vol% or less.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 15crnX 15= thin weave polyester processed yarn fabric (slant weave, Venetian 1st count 6oy, color beige)
0.11n of Nimisin oil! A cloth with an oil stain of 5 crn in diameter by dripping is used as a test cloth.

Place the test cloth on a vacuum table, and while applying suction from the bottom, spray approximately 10 rnl onto the oil stain area with an electric stain removal gun containing the following stain removal liquid, and let it air dry to remove ring stains. See if it exists.

Example 2 A 15 cm x 15 eM thin polyester processed yarn fabric (plain weave, flat crepe, count 80 two-color moss green) was tested on a fabric with an oil stain of diameter 53 by dropping 0.1 m of K sewing machine oil. Use cloth.

An aerosol filled with a mixed liquid consisting of 1.1.l trichloroethane and barchlorethylene in a volume ratio of 85:15 (liquid/gas ratio = 63/37. Gas F1□
) was sprayed onto the above test cloth, the stain was removed, but a ring stain remained.

182.3 g of the composition below was filled in an aerosol containing a propellant DME (dimethyl ether) 166.6.9, which was sprayed onto the ring stains that had occurred, which was then gently wiped off with tissue paper and air-dried.

The stain on the rear wheel disappeared after 5 minutes.

Normal paraffin undecane (N-11) 6
00cc trichlorotrifluoroethane (F-113)
400 Octamethyl cyclotetrasiloxane (SH344) 50 Ethylene glycol monobutyl ether 10 ■・l-1 Trichloroethane 100 total
In Example 1.2 of 1160 cc, no two-wheel stains were formed by the method of the present invention (this shows that the ring stains caused by the conventional treatment also disappeared).

〔Effect of the invention〕

As seen in Examples 1 and 2, by removing stains from clothing using the liquid composition of the organic solvent and polysiloxane mixture of the present invention, it is possible to remove oily stains on clothing as well as conventional oily stains. It does not generate ring stains, which were easy to generate and became a problem when treating stains, and it can easily remove ring stains that were generated by conventional treatments, and it can remove ring stains that were considered particularly difficult to remove. It is extremely effective in removing stains.

Claims (3)

[Claims] (1) 10 to 9 organic solvents or a mixture of two or more
Fill a stain removal spray gun or aerosol can with a composition liquid consisting of 9% by volume and 1 to 90% by volume of one or more polysiloxanes to remove ring stains from clothes with oil stains. How to remove oil stains without creating. (2) 10 to 9 organic solvents or a mixture of two or more
Oil-based stains can be removed using conventional organic solvents by spraying a stain removal spray gun or aerosol can filled with a composition solution consisting of 9% by volume and 1 to 90% by volume of one or more polysiloxanes. How to remove ring stains generated by extraction processing. (3) Organic solvents include chlorinated organic solvents, fluorinated organic solvents,
The composition according to claim 1 or 2, wherein the polysiloxane is a petroleum-based organic solvent, and the polysiloxane is octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tetradecamethylcycloheptasiloxane, dodecamethylcyclohexasiloxane, or hexamethylcyclotrisiloxane. A method of removing oil stains and ring stains from clothing using a liquid.