CS217400B1 - Method of antistatic treatment of textile materials in organic solvents - Google Patents

Description

The invention solves the elimination of the formation and accumulation of electrostatic charge on textile materials and their production by increasing the surface conductivity of the fibers.

Previously known antielectrostatic chemistry compositions are applied to textile materials mainly from their Debo dispersion in water. In the organic solvents tetrachlorethylene, trifluorotriohloroethane, triohormonofluoromethane and gasoline used in the chemical cleaning of textiles, these substances are difficult to dissolve or adversely affect the cleaning process itself, so that they are of limited use and the results obtained are not satisfactory.

The aforementioned drawbacks are overcome by the process according to the invention, which is based on the use of a mixture of liquid polyethylene glycol esters of fatty acids which are readily soluble in the organo-organic solvents used in the fire-cleaning. Said substances are added directly to the organo-organic solvents during the chemical cleaning of textile articles or sprayed onto the textile in the form of a mist. A conductive coating forms on the fiber.

The mixture of polyethylene glycol esters of higher fatty acids, liquid at 20 ° C and soluble in the organic organic solvent, contains polyethylene glycol esters of higher fatty acids, characterized by the formula

Ry. CO0. . / CH ₂ . CH ₂ . 0 / _{χ Η} (I)

R _y . C00 · · CH ₂ . CH ₂ .0 / _x 0C, Ry (II)

_CH3 / CH _2/7 CH-CH / CH _2/7 C00 / CH ₂ CH ₂ 0 / _x H (III) wherein XO) to 10

R = CH, (CH3) 6-16

Jf> Λ at what? the proportion of polyethylene glycol ester oleic acid of the formula III in the mixture is at least 10% by volume

These mixed polyethylene glycol esters of fatty acids are produced by esterifying a mixture of higher fatty acids with polyethylene glycols or oxethylalkyl. They have so far been used primarily as industrial emulsifiers and in detergent compositions.

By using the mixed polyethylene glycol esters of the fatty acids of the present invention dissolved in organo-organic solvents at 20 DEG C., the textile materials, particularly synthetics, obtain a reduced resistivity up to a maximum of 10 ohms, thereby preventing formation and accumulation of electrostatic charges on the fabrics during and usage. The presence of these compositions in the organo-organic solvents during the chemical cleaning also favorably affects the effectiveness of the compositions and also binds any water present in the form of an emulsion in the organic solvent, thereby avoiding precipitation and deformation of the fabrics during the cleaning.

The following examples illustrate the process of antielectrostatic treatment of textiles from organo-organic solvents during the chemical cleaning process:

Example 1

When cleaning garments with perohlorethylene, triohortrifluoroethane, triohormonofluoromethane, or gasoline, a mixture of hexaethylene glycol esters of higher fatty acids, prepared by the oxalolae of thealoxal elain, or fatty acids from coconut or palm kernel oil, is added to the solvent in an amount of 5g / l. The fabrics thus treated exhibit

Q 'maximum surface resistivity of 2.10 ohms, its surface does not accumulate an electrostatic charge, whereas in conventional cleaned, especially synthetic fabrics, the surface resistivity exceeds 2.10 ohms and high electrolyte charges accumulate. At the same time, improved appearance, feel and dirtyness are achieved, since treated fabrics do not attract sills and other fine dirt during use.

Example 2

The same effect is obtained when, instead of adding a mixture of hexaethylene glycol esters of higher fatty acids to the cleaning solvent, this mixture, in an amount of 0.2% by weight of the cleaned fabrics, is sprayed through a spray nozzle onto the cleaned fabrics before drying.

The process according to the invention can be used in the chemical cleaning of garments and other articles made of textile materials and in the textile industry for the refinement of textile materials in an organic solvent environment.

Claims (2)

A process for the antielectrostatic treatment of textile materials in organo-organic solvents selected from the group consisting of carbon tetrachloride, triohortrifluoroethane, tri-chlorofluoroethane methane or gasoline, characterized in that 2 to 20 g per liter of mixture at 20 ° C liquid polyethylene glycol ester is added to said organic solvent acids, characterized by the following formula Ry. coo./ch ₂ CH ₂ .o / _x H (I) R _y . C00./CH ₂ .CH ₂ .0 / _x 0C.Ry (If) CH ₃ / CH _2/7 CH = CH / CH _2/7 COO / CH ₂ CH ₂ O / H _x. (III) wherein x = 3 to 10 Ry = CH ₃ / CH _2/8 to 16, wherein the proportion of polyethylene glycol oleic acid of pattern III in the mixture is at least 10% objemovýoh. 2. A process according to claim 1, characterized in that a mixture of polyethylene glycol esters of higher fatty acids, dissolved in the above-mentioned organic solvent, in an amount of 0.1 to 0.5 by weight, is sprayed onto the fabric by means of a mist.