CS246442B1 - Lubricating and / or lubricating textile fabric for sewing threads - Google Patents

Abstract

The subject of the solution relates to a lubricating and/or greasing agent for sewing threads consisting of 10 to 40 parts by weight of polydimethylsiloxane with a viscosity of 3.5.10"4 to 1.10~4 . s-1, 2 to 7 parts by weight of polyethoxamer with 5 to 25 moles of ethylene oxide of a higher fatty acid, or its triglyceride, 5 to 20 parts by weight of monoethanolammonium salt of a mixture of mono- and diester of phosphoric acid octaethoxamer of a mixture of higher fatty alcohols with chain lengths of C10 to C11 and 40 to 60 parts by weight of water.

Description

The invention relates to a lubricating and / or lubricating textile composition for sewing threads. To ensure good sewing ability when sewing on high-performance sewing machines, the yarn needs to be treated with a preparation that reduces surface friction at high shear rates and suppresses melting and abrasion of the surface fibers.

When sewing at high speeds, or when sewing thick materials with some special treatments, the needle heats up very quickly to a temperature higher than the melting point of the polyester fiber (220 to 260 ° Cj), thereby melting the thread, resulting in breakage. made of polyester will not do without a special finish.

The problem of increasing the resistance to tribothermic damage for conventional types of yarns based on chemical fibers is principally solved in two ways, namely by means of preparations based on organic substances which are characterized by endothermic change or sublime in the melting temperature of the polymer. 3,048,650).

The second method consists in applying a deposit of a thermostable oil, preferably a dialkyl, diaryl, or alkylarylsilicone oil in the form of an emulsion formed by the action of suitable emulsifiers. Such a type of silicone emulsion utilizes e.g. MS. AO č. 189 817, wherein alkyl polyglycol ethers having from 12 to 22 carbon atoms in the hydrophobic chain and from 3 to 20 moles of ethylene oxide per molecule are used as emulsifiers. Similar is according to MS. AO č. 185 368.

In another Authentication Certificate (No. AO No. 208 610), phosphoric acid derivatives are recommended as heat-resistant products with other emulsifiers of the oxyethylated fatty alcohol type.

For finishing sewing threads were also designed milkroemulsion systems in MS. AO number 234 819.

Depending on the manner of deposition of the remedial agent (bath coating, application rollers, wick coating), it is necessary to comply with the additional requirements for the applied product, whilst the health and environmental criteria are largely applied. only one surfactant is used, so that suitable emulsification of the oil present cannot be achieved.

Due to the high temperature of the needle using high-performance sewing techniques, the compositions used so far do not provide sufficient protection against local thermal damage to the synthetic fibers, especially polyester and polyamide, resulting in frequent breakage of the sewing thread.

Due to the use of emulsions prepared solely on the basis of nonionic emulsifiers, owing to the low viscosity of the emulsions, the lubricant is often run off and the amount applied does not provide the desired effect, since part of the preparation flows from the treated material.

Said drawbacks are solved by a lubricating and / or greasing textile composition for sewing threads characterized in that it consists of 10 to 40 parts by weight of polydimethylsiloxane with a viscosity of 3.5.10 ~ ⁴ to 1.10 ~ ⁴ m ² s ^-1 and 2 to 7 parts by weight of polyetoxamer with 5 to 25 moles of higher fatty acid ethylene oxide, respectively. its triglyceride, 5 to 20 parts by weight of the monoethanolammonium salt of the mixture of mono and diester of the phosphoric acid octaethoxamer of the mixture of higher fatty alcohols having a chain length of C 10 to Cle and 40 to 60 parts by weight of water.

Further, the sewing thread lubricating and / or lubricating textile composition is illustrated in the exemplary embodiments without being exclusively limited thereto.

Example 1

In 35 parts by weight of polydimethylsiloxane having a viscosity of 3,5.10 ~ ⁴ n R ^'1 are dissolved 2.7 parts by weight of a mixture eikozaetoxaméru mixture of castor oil and ricinoleic acid was added 12.8 parts by weight of the monoethanolammonium salt of a mixture of mono- and diester of phosphoric acid, a mixture of higher oktaetoxaméru of fatty alcohols with an average refazea length of C13. The concentrate thus obtained is poured into 49.5 parts by weight of water with vigorous stirring in a mixer. Sewing test results are shown in the box.

Example 2

Dissolve 5.1 parts by weight of oleic acid hexaethoxamer in 35 parts by weight of polydimethylsiloxane with a viscosity of 2.10 ^-4 m ² s ^{4 4} and add 11.2 parts by weight of monoethanolammonium salt of the phosphoric acid octaetoxamer mixture of higher fatty alcohols of average length of the Ci3 chain. The concentrate thus obtained is poured into 48.7 parts by weight of water with vigorous stirring in a mixer.

Sewing test results are shown in the table.

4 6 ί 4 2

Thread sample 5 6 softness (Tex) table Color doupravil coefficient friction (center, hour) Sewing test Tebex 12 X 2 Hiel without modification 0,226 3 Tebex 12 X 2 White according to Example 1 0,143 1 Tebex 12 X 2 Hiel according to example 2 0,151 1

Sewing ability rating:

- Outstanding - Good - Compliant - Inappropriate.

Claims (1)

2 4 6 í 4 2 Thread Sample 5 6 Fineness (tex) Table Color Finish Friction Coefficient (Center, Hour) Tebex Sewing Tests 12 X 2 White Finish 0.2.26 3 Tebex 12 X 2 White Example 1 0.143 1 Tebex 12 X 2 white according to example 2 0.151 1 Sewing rating: 1 - defining 2 - good 3 - compliant 4 - inappropriate. OBJECTS OF THE INVENTION A lubricating and / or lubricating textile yarn textile fabric characterized in that it comprises 10 to 40 parts by weight of polydimethylsiloxane having a viscosity of 3.5 to 10 to 4 to 10-4 m2 / s and from 2 to 7 weight percent. hunting polyethoxamer with 5 to 25 moles of higher fatty acid ethylene oxide, respectively. its tri-glyceride, 5 to 20 parts by weight of the monoethanolammonium salt of a mixture of phosphoric acid mono- and di-esters of octaethoxy amine, a mixture of higher fatty alcohols having a C 10 to C 28 fatty alcohol and 40 to 60 parts by weight of water.