CS242363B1 - Antistatic jig for antistatic wipers production - Google Patents

Abstract

In the reprographic industry and everywhere there, you need to remove static electric charge from product surface synthetic materials can be used an antistatic wipe made of fabric impregnated with a composition containing 10 to 10% by weight 50 parts by weight of anionic alkyl ester caprylic or oleic acids wherein alkyl is C12 to C18, further 10 to 50 parts of cationic quaternized a fatty amine polyglycol ether, wherein the alkyl is C12 to Ce and polymerization step 4 to 15.5 to 10 parts of polyethylene glycol by molecular weight weight 1,200 to 2,000; 5 wt. aluminum salt and to the remainder on 100 parts water.

Description

BACKGROUND OF THE INVENTION The present invention relates to an antistatic preparation for the production of antistatic wipes which serves to remove static electrical charge from the surface of non-conductive material products, such as record players, films and other photographic materials, slides, electrophonic musical instruments, CCTV screens and the like.

It is known that by contact and friction of textile, especially synthetic fibers, as well as synthetic synthetic materials used in the production of vinyl records, photographic films, slides, etc., a static electric charge is created which intensively attracts dust and other impurities. For example, the dust of a vinyl record becomes clogged, noise and distorted sound are created during playback, and the vinyl record quality deteriorates gradually as the grooves become damaged.

On photographic films and slides, dust reduces the image quality with slight scratches.

Eliminating these defects is quite difficult, often using the possibility of adding additives to the starting raw materials for plastics during the manufacturing process to prevent static electric charges. However, this process requires the use of specialty chemicals, is expensive and is not yet generally established. A more widespread and more widely used method is to remove a static electric charge from a plastic article by wiping the surface of the article with a cloth impregnated with an antistatic agent. The main requirements for such a fabric are both high antistatic efficiency and, second, the treatment of health and safety

- 2,242,363 chemicals · Fabric that is the carrier substrate of an antistatic agent requires a soft touch and a hair surface with sufficient hair attachment, which must not adhere to the wiped object when wiping · Means for mechanically cleaning the product surface, such as records in the form of brushes or cushions covered with a fine pile fabric, eg plush ·

According to U.S. Pat. No. 4,129,505, static electricity removes an antistatic spray comprising a volatile ethanol soluble carrier consisting of 2-10% by weight of water and 90-98% ethanol and a combination of two antistatic agents dissolved in the carrier. One of the reagents contains a quaternary ammonium preparation for softening the fabric in an amount of 0.9 to 2% by weight of the carrier, the second agent is ammonium acetate · The disadvantage of this process is that ee vaporizes a considerable amount of ethanol in use, the vapors of which are more flammable in concentration ·

According to FR Pat. No. 2 321 565 contains a preparation for softening and antistatic treatment of textile materials as the main component of ammonium alkylcarbamate, clay and an agent for keeping ammonium alkylcarbamate in an aqueous suspension.

Another FR Pat. 2,246,618 proposes as a textile softener having improved antistatic properties a quaternary ammonium or foefonium compound and an electrically conductive salt, in particular aluminum or lithium salt dispersed in a quaternary compound.

GB-A-1,370,111 protects a textile, antistatic softening and soiling reducing agent containing a quaternary benzimidazole derivative.

U.S. Pat. No. 4,265,772 describes an antistatic detergent additive softening fabric based on an anionic component, such as, for example, soaps and quaternary ammonium compounds.

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- 3 Other US Pat. No. 4,069,159 proposes, as an antistatic and softening agent for textiles, a product comprising a stearic acid condensate and diethanolamine quaternized with dimethyl sulfate in a mixture of lithium chloride in a weight ratio of 1.0 / 10 to 10 / 1.0.

According to GB Pat. No. 1,483,627, the antistatic and softening composition comprises an electrically conductive metal salt dispersed in a water-insoluble cationic ammonium or phosphorus compound and a smectite clay softener having the smallest particles with a diameter of 15-450 nm. Preferred metal salts are the chlorides or sulfates of aluminum, sodium, lithium, cesium, calcium, magnesium, zinc, potassium, indium and titanium.

The common drawback of the above processes with respect to the removal of static electrical charge from the surface of synthetic material products is, in particular, the fact that they do not contain a balanced mixture of anionic and cationic products that meet the desired purpose when dosed in the correct proportion. In addition to these possibilities, the patent literature discloses processes designed to be particularly suitable for the antistatic treatment of articles such as garments and other useful textiles of synthetic fibers.

It is also known MS. Description of the Invention to Authentic Certificate 195 617, which discloses an antistatic impregnation composition for the manufacture of antistatic wipes for the antistatic treatment of non-conductive materials that are contaminated by electrostatic charges. This mixture consists of an alkylpolyglycol ether sulfate, an alkylpolyglycol ether, a poly (ethylene oxide-polypropylene oxide) copolymer and a polyhydric alcohol glycerin.

The drawback of this cloth is the formation of an oily coating on the rubbed object, on which dust and drying up again

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- 4 some components of the coating mixture · The antistatic cloth must be permanently stored in polyethylene packaging so that it does not dry out, otherwise it will lose its effectiveness in a certain time ·

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problem of removing static electric charge from the surface of synthetic material products such as vinyl records, films and negatives by a simple and economical process by using a cloth wiped with chemicals to remove the already existing electric static charge. so that this treatment is effective and the wipe is absolutely simple to handle ·

Anti-static wiping is made by available products on common equipment · Handling of wipes made of antistatic fabric is simple, the wipes have a gentle touch that does not damage eg grooves of vinyl records and does not create scratches on photographic films and slides.

Vinyl records are treated by wiping either one-sided while rotating in the recorder or bilaterally by swirling before deployment, eliminating surface static charge · After several treatments the grammole becomes permanently antistatic · Static charge of CCTV screens, all types of photo lenses, films and slides · In reprography, all reprographic machines are treated in the same way as the backing glass, which is easily soiled when placing the originals. · The surface treatment of the dies is also carried out during technical reproduction and assembly work. This relieves the matrix of static static charge, thus preventing dust, dirt and attracting errors and defects from occurring in photomechanical copying.

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It is preferably used for the manufacture of cloths of textiles of native, cellulose or fine textile fibers, or mixtures thereof. They may, in particular, be in the form of a knitted fabric of a circular machine or a warp-knitted fabric or fabric, for example plain, combed or ground, optionally of a non-woven fabric, in particular interwoven, quilted, needled or bonded.

The substance of the invention is characterized in that the fabric, in particular the woven fabric used for the wipe, is treated with a mixture of 10 to 50 parts by weight of an anionic alkyl ester of caprylic or oleic acid, wherein the alkyl is C18 to C18. parts of a cationic quaternized polyglycol ether of a fatty amine, wherein the alkyl is C 1-8 to a polymerization step of 4 to 15, 5 to 10 wt. parts of polyethylene glycol having a molecular weight of 1 200 to 2 000 and 1 to 5 wt. parts of an aluminum salt such as aluminum sulfate or chloride. The mixture thus prepared is made up to 100 wt. parts.

The first component of the treatment composition is an alkyl caprylic or oleic acid ester wherein the alkyl is a C g g ažΟΟ,, i.e. dodecyl ester, tridecyl ester, tetradecyl ester, pentadecyl ester, hexadecyl ester, heptadecyl ester, and octadecyl ester of caprylic or oleic acid.

The treatment is carried out on a prewashed, usually dyed and dried fabric. The antistatic treatment composition can be applied in full width to the foulard, i.e., the device consisting of the impregnating trough and the squeezing rollers. This device is generally upstream of a drying frame or fusing machine. Likewise, the antistatic preparation can be applied in full sin by spraying. The treatment is also possible on a drum washing machine for washing garments with subsequent drying of the fabric in a hanger or on a tambler »Very soft goods can be achieved only in a tambler, where the antistatic preparation is sprayed on the fabric in the first phase and then the goods are dried.

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Example —2

Interlock hollow knitted fabric weighing 250 g / m, made on OFS Meto, dividing 24 from yarn 16,5 tex. containing 100% viscose staple is prewashed and dyed. This is followed by dye stabilization, dewatering and drying of the knitted fabric. The antistatic treatment is then carried out on a Foullard upstream frame dryer. The impregnation bath consists of:

% by weight of tetradecyl ester of caprylic acid, wt. parts of a cationic quaternized polyglycol ether of a fatty amine, wherein the alkyl is C 1 to C 4 and the polymerization step is 4 to 15 wt. parts by weight of polyethylene glycol

200 to 2000 wt. % of aluminum chloride, wt. parts of water _c

Said substances are homogenized by stirring at normal temperature, the fabric is impregnated in full width, squeezed to 100% increment and dried at 120-140 ° C.

The same results as in the above example are obtained when dodecyl ester, tridecyl ester, pentadecyl ester, hexadecyl ester, heptadecyl ester and octadecyl ester are used instead of tetradecyl ester dodecyl ester, tridecyl ester. Dodecyl ester, tridecyl ester, tetradecyl ester, pentadecyl ester, hexadecyl ester, heptadecyl ester and octadecyl oleic acid ester may also be used.

Claims (1)

SUBJECT OF THE INVENTION Antistatic preparation for the production of antistatic wipes, which is used for antistatic treatment of non-conductive materials, which are contaminated by the formation of electrostatic charge, characterized in that it contains by weight 10 to 50 parts of an anionic alkyl ester of caprylic acid or oleic acid, wherein the alkyl is C 6 to C 6, 50 to 10 parts of a cationic quaternized polyglycol ether of a fatty amine, wherein the alkyl is θχθ and the polymerization degree is 4 to 15, 5 to 10 parts of polyethylene glycol having a molecular weight of 1 200 to 2 000, 1 to 5 parts of aluminum salt up to 100 parts of water