RU2798599C1 - Lubricant for synthetic and natural threads - Google Patents

Abstract

FIELD: fibres.

SUBSTANCE: present invention relates to the technology of oiling fibres to improve their ability to textile processing. The lubricant for synthetic and natural threads comprises the following components in the ratio wt.%: polyethylene glycol 68-70, diethanolamine 2-4, caprolactam 24-26, acetic acid 2-4, the rest is water.

EFFECT: reduction of kinematic viscosity, density and wear under constant load, improved removal of the lubricant from the surface of the threads, as well as a neutral pH level.

1 cl, 1 tbl, 3 ex

Description

The invention relates to the chemical and light industries, namely the production of chemical and natural fibers, more precisely to the technology of oiling fibers to improve their ability to textile processing.

Known lubricant for synthetic, mainly polyacrylonitrile fibers, containing, in wt. %: mineral oil 6.64-9.83; ethoxylated stearic acid with an average degree of ethoxylation 6 0.1-0.2 (Stearox-6); a mixture of (alkyldioxyethylene) methylmethyldiethylammonium benzenesulfonates containing 16-18 C atoms in the alkyl radical (alkamon OS-2) 0.01-0.05; polyethylene glycol ethers of isononylphenol with an average degree of hydroxyethylation 12 (neonol AF 9-12) 0.01-0.03; dibutyl phthalate 0.01-0.03; ammonium ferrocyanide 0.04-0.05 and water the rest up to 100. [US Pat. 2093627 Russian Federation IPC D06M 13/02, D06M 11/67, D06M 13/17, D06M 13/224, D06M 13/463, D06M 101/28. Lubricant for synthetic, mainly polyacrylonitrile, fibers / Kartyshev N.M.; applicant and patent holder Ivanovo Research Institute of the Cotton Industry, Joint-Stock Company "Suvorovskaya Thread". - N 94018064/04, Appl. May 17, 1994; publ. 20.10.1997 - 7 p.].

Known lubricant for polyamide fibers and threads, containing, wt. %: mineral white oil 0.425-7.28; ethoxylated alkylphenol with an average degree of ethoxylation 10 (preparation OP-10) 0.1-2.10; ethoxylated stearic acid with an average degree of ethoxylation 6 (preparation Stearox-6) 0.22-3.92; oleic acid 0.035-0.56; oxyethylated caprolactam with an average degree of oxyethylation 15 (preparation KLOZ-15 / 0.008-0.14; potassium salts of butml phosphates (Butafos-K or BFK-1) 2.0-10.0. [Pat. 1838484 Russian Federation IPC D06M 13/02 Krutkova L.N., Kuzmina V.A., Maltabar A.I., Livshits E.N., Makhno S.F., Rebrova R.I., Starodubtsev E.G., applicant and patent holder Leased enterprise All-Union Scientific Research Institute of Synthetic Fibers and Experimental Plant - N 4805410, filed 01/12/1990; published 08/30/1993 - 9 p.].

The disadvantages of the lubricants described above are not sufficiently high antistatic and dispersion properties, foaming, delamination, high consumption of reagents, and also the fact that they dissolve only in hot water, which increases energy consumption in the processing of threads and yarn.

The closest in essence and technical result is a lubricant for synthetic fibers, containing, in wt %: vegetable oil - 39-40; oleic acid - 12-13; polyethylene glycol - 20-24; diethanolamine - 12-13; caprolactam - 12-14; water is the rest. [Pat. No. 2781637 RF, IPC D06M 13/02, 13/184, 13/325, 13/402. Lubricant for synthetic threads / Barannikov Mikhail Vladimirovich (RU), 2021 Polyakov Vyacheslav Sergeevich (RU), Polyakov Igor Vyacheslavovich (RU); applicant and patent holder Federal State Budgetary Educational Institution of Higher Education "Ivanovo State University of Chemical Technology" (RU). - No. 2021137076; dec. 15.12. 2021; publ. 10/17/2022, Bull. No. 29].

The disadvantage of this lubricant is that it has an overestimated viscosity, which makes it difficult to wash them off from the threads impregnated with it, as well as an increased pH, which reduces the range of threads for which it can be used.

The technical result of the invention is a decrease in the kinematic viscosity, which leads to an improvement in the washing of the lubricant from the surface of the threads, as well as a decrease in the pH value to expand the applicability.

This result is achieved by the fact that the lubricant for synthetic and natural threads, containing polyethylene glycol, diethanolamine, caprolactam and water, according to the invention, additionally contains acetic acid in the following ratio, wt.%:

polyethylene glycol - 68-70; caprolactam - 24-26; diethanolamine - 2-4; acetic acid - 2-4; water - the rest.

Substances used:

polyethylene glycol TU 2483-167-05757587-2000;

caprolactam GOST 7850-2013;

diethanolamine TU 2423-151-00203335-2003;

acetic acid GOST R 55982-2014;

water GOST 6709-72

Example 1

In a container with caprolactam dissolved in water in an amount of 26% wt. add a mixture of composition:

polyethylene glycol-70% wt.,

diethanolamine - 2% wt.,

acetic acid - 2% wt.

The composition is obtained within 2 hours at a temperature of 170°C with stirring. The resulting composition is ready for use for processing polyamide yarns.

Example 2

In a container with caprolactam dissolved in water in an amount of 25% wt. add a mixture of composition:

polyethylene glycol-69% wt.,

diethanolamine - 3% wt.,

acetic acid - 3% wt.

The composition is obtained within 2 hours at a temperature of 170°C with stirring. The resulting composition is ready for use for processing polyester threads.

Example 3

In a container with caprolactam dissolved in water in an amount of 24% wt. add a mixture of composition:

Polyethylene glycol - 68% wt.,

diethanolamine - 4% wt.,

acetic acid - 4% wt.

The composition is obtained within 2 hours at a temperature of 170°C with stirring. The resulting composition is ready for use for processing cotton threads.

The resulting compositions for processing synthetic and natural threads are stable for 180 days (do not change properties), the mass fraction of the main substance is at least 98.8-99%.

The compositions are examined according to the following characteristics: kinematic viscosity, wear index under constant load, density, pH.

The results of the conducted studies are shown in the table.

Table Kinematic viscosity at 40 ° C, mm ² / s Wear index at constant load 196 N, mm Density, g/cm ³ pH value (10%) Example 1 58.4 0.46 0.905 8.4 Example 2 55.4 0.47 0.910 8.3 Example 3 58.0 0.48 0.905 8.2 Prototype 68 0.54 0.92 10.8

The study was carried out using the resources of the Center for the Collective Use of Scientific Equipment of the ISUCT (with the support of the Ministry of Education and Science of Russia, agreement No. 075-15-2021-671 dated July 28, 2021).

Synthetic and natural threads at the stages of forming and drawing are treated with a lubricant using preparation washers on the forming and drawing units.

Conclusions: due to the proposed composition of water-soluble components, the lubricant has reduced kinematic viscosity, density and wear under constant load, as well as a neutral pH level, which allows expanding the range of its applicability while simplifying the washing of threads.

Claims (2)

A lubricant for synthetic and natural threads containing polyethylene glycol, diethanolamine, caprolactam and water, characterized in that it contains acetic acid in the following ratio, wt.%: polyethylene glycol 68-70 caprolactam 24-26 diethanolamine 2-4 acetic acid 2-4 water rest