JPS6247990B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a compounded composition that is excellent in preventing wear of metals in wet conditions. This invention relates to a fiber spinning oil. Conventionally, when producing synthetic fiber yarn, it is important to improve the metal abrasion resistance in wet conditions and prevent damage to the yarn as much as possible. Based on this idea, monobasic acid esters, waxes, and silicones with relatively low molecular weights are being considered. Examples of these include, for example,
101694 and Japanese Patent Application Laid-Open No. 53-45498, compositions containing a large amount of relatively low molecular weight esters to reduce dynamic friction between the thread and the metal, when wet, The effect of preventing single filament breakage between metals has been observed, and water-insoluble waxes and silicones have also been observed to have a similar effect. However, in actual use, if a large amount of wax is used, not only will scum build up on the drawing rollers or guides, contaminating the yarn guide very much, but also cause water leakage on top of it. Even during weaving using ets, scum often adheres to the reeds, heddles, etc., greatly reducing the weaving operating rate. Furthermore, if a large amount of water-insoluble silicone is added, the dyeability of the resulting yarn will be severely inhibited, or the silicone will re-adhere to the cloth during the dyeing process, which often causes practical problems. Furthermore, when the ester of monohydrochloric acid is mainly composed of one with a relatively low molecular weight, it reduces the friction between the fiber and the metal and improves fuzz and tangles caused by single filament breakage when wet. Although this is a preferable direction from a perspective, there are limits to its preventive effect. In other words, in general, compounds with low molecular weights have poor heat resistance and are difficult to use these days.On the other hand, in order to improve heat resistance and reduce friction between fibers and metals, the molecular weight of ester compounds is increased. With this method, it is difficult to reduce the friction between the fibers and the metal as much as expected, and what's more, the wear resistance of the metal in wet conditions is actually becoming worse. Recently, in fiber manufacturing, higher speed and higher temperature spinning conditions have been adopted in order to improve production efficiency, while synthetic fiber threads have been water jetted without glue in order to streamline the weaving process. Weaving is carried out using a loom, but in this case, the generation of scum during the spinning process is extremely small, and in addition, it reduces the abrasion between the thread and metal in wet conditions and prevents single thread fuzz. For this reason, it is desirable to have a yarn that also has the function of actively resisting metal abrasion in wet conditions (preventing reed abrasion).
A spinning oil suitable for this purpose is strongly desired. In view of the current situation, the inventors of the present invention have made extensive studies in order to obtain a synthetic fiber yarn that causes fewer troubles during the spinning and drawing processes and has excellent metal abrasion resistance even during weaving using a water jet loom. The present invention has been achieved in which the desired objective is achieved by employing a special spinning oil formulation in the spinning process. That is, the present invention is completely different from the conventional method of using a limited amount of water-insoluble smoothing agents, waxes, and silicones in contrast to the conventional spinning oil consisting of known smoothing agents, emulsifiers, sizing agents, etc. In particular, in oils containing a smoothing agent and/or a polyalkylene glycol copolymer, an alkali metal salt of an alkyl phosphate having 12 to 18 carbon atoms (component A), an alkali metal salt of an N-acyl derivative of an amino acid (component B), Modified silicones (component C) and waxes (component D) are blended as essential ingredients, and A+B+C+D always accounts for 4% to 10% of the total active ingredients.
% (weight) and in weight % A+B>C+
In D, C+D is an oil agent with improved metal wear resistance in wet conditions, which is composed of a composition containing 4% (by weight) or less of all active ingredients. The purpose of the present invention can only be achieved when the four components A, B, C, and D coexist, and even if any of the former four components is missing, the desired effect cannot be obtained. An amazing synergistic effect is exhibited. This fact has not been known at all, and on the other hand, it has a completely different mechanism from the previously known ester-based smoothing agents, water-insoluble waxes, and silicones that improve metal wear resistance in wet conditions. This method actively forms an oil film on the wet metal surface to form a protective film on the metal surface. Another important point is that in the present invention, the metal abrasion resistance in wet conditions is greatly improved while keeping the blending ratio of each component within the minimum range due to the synergy effect. However, in the weaving process, not to mention the yarn spinning process, even if waterjet is used without glue, scum adhesion is extremely reduced. Another major feature is that it can be applied to commonly known spinning oils made of smoothing agents, emulsifiers, polyalkylene glycol copolymers, etc., and the effects of the present invention can be greatly expressed by blending the four components of the present invention. It is. To explain each component in the present invention in more detail, component A includes an alkali metal salt of a commonly known alkyl phosphate having a linear or side chain saturated or unsaturated alkyl group having 12 to 18 carbon atoms, such as sodium; Consists of potassium and lithium. Here, polyoxyethylene-modified alkyl phosphates, which are commonly used as antistatic agents, have low metal wear resistance and are completely excluded from the present invention. For example, even POE(1) lauryl phosphate to which 1 mole of ethylene oxide has been added is subject to severe restrictions, such as those containing 50% or more of the phosphate are excluded from the present invention. Among the metal salts of alkyl phosphates of the present invention, those having an unbranched straight chain alkyl group are preferred, and lauryl, cetyl, palmitylstearyl and the like are preferred. On the other hand, component B used in combination with component A consists of an alkali metal salt of an N-acyl derivative of an amino acid, and has the general formula (1) and the general formula
Consists of the compound shown in (2). [However, R represents an alkyl group, alkenyl group, or fluoroalkyl group having 8 to 22 carbon atoms, n is a positive integer of 1 or 2, Z represents -CO-, -CO ₂ -, M
represents potassium, sodium, and lithium;
R' represents a hydrogen atom or a methyl group. ] Specifically, N-lauroylsarcosine sodium, N-lauroylsarcosine potassium salt, N-oleoylsarcosine sodium salt, N-lauroylsarcosine sodium salt,
- Otarium salt of stearoylsarcosine, N-
Disodium salt or dipotassium salt of lauroylglutamic acid, sodium salt or potassium salt of N-octanoyl aspartic acid or N-perfluorooctanesulfonylglutamic acid,
Sodium salts or potassium salts of N-lauroylglycine, N-lauroylmethionine, N-lauroylthreonine, etc. are preferably used. Furthermore, modified silicones are used as component C, which is used in combination with component A and component B. Examples include phenyl-modified silicone, epoxy-modified silicone, polyoxyalkylene-modified silicone, fatty acid-modified silicone, etc. These modified silicones are usually commercially available emulsified with nonionic activators. . Furthermore, A component, B component, C
Various known water-insoluble waxes can be used as component D to be used in combination. Examples of this include natural and synthetic waxes such as paraffin wax, oxidized microcrystalline wax, carnauba wax, beeswax, and oxidized polyethylene wax, among which paraffin waxes with a melting point of 30°C or higher and 140°C or lower are included. preferable. These waxes are usually available as dispersed in water using a nonionic emulsifier and are therefore applied as an aqueous emulsion. In order to obtain the desired effect of the present invention by combining the above four components, each component A, B, C, and D is always essential, and even if one of them is missing, The effect cannot be sufficiently expressed, and even if the ratio of each component is unbalanced, the metal wear resistance effect in wet conditions cannot be significantly improved even with the minimum amount added. Of course, beyond the scope of the present invention, troubles such as scum adhesion to rolls, guides, reeds and heddles will increase in yarn spinning processes where the sum of A+B+C+D exceeds 10%, and in weaving processes using water jets. Undesirable. More importantly, phosphates and alkali metal salts of N-acyl compounds of amino acids generally have ion-exchange properties, and especially when weaving with a water jet, the hardening of the water increases the amount of ion exchange that can be obtained. It is also said that the water-insoluble scum deposited on the reeds and healds is a direct cause of reduced operating efficiency. Therefore, even if the blended composition used in the present invention has the effect of preventing wear of reeds, healds, etc. in wet conditions, it is natural to avoid blending more than the necessary amount, and it is preferable to keep the amount to a minimum. Not even. Therefore, in the present invention, usually A+B+C
The sum of +D is kept within 4% or more and 10% (weight) or less. Moreover, A+B>C+D, that is, the anion component is always greater than the sum of waxes and silicones.
Moreover, C+D is used at 4% or less. This C or D component is usually a water-insoluble component, but it can be mixed in a commonly known spinning oil at a concentration of 4.0% or more by dispersing it with an appropriate emulsifier, but it is difficult to prevent scum from forming during the spinning process or weaving process. From the viewpoint of deposition, it is preferable to use 3.0% or less. In this way, it is possible to exhibit excellent metal abrasion prevention effects in wet conditions without causing scum trouble in the spinning and weaving processes. The composition for preventing metal abrasion in wet conditions of the present invention is usually used by being mixed with a known spinning oil, and the known spinning oil is not limited in any way. For example, known spinning oils such as smoothing agents and/or polyalkylene glycol copolymers commonly known as spinning oils, and more specifically mineral oils, octyl palmitate, isotridecyl laurate, oleyl oleate, and Spinning oils and/or emulsions containing ester compounds of monobasic acids such as tridecyl palmitate and isotridecyl stearate with commonly known emulsifiers and/or Japanese Patent Publication No. 13564/1989 and British patents.
833450 or U.S. Pat. No. 3,338,830, water-insoluble or water-soluble random or Even a known spinning oil mainly composed of Brodzko's polyethers can exhibit excellent metal abrasion resistance in wet conditions by incorporating the composition of the present invention. The synthetic fibers to which the present invention is applied are made of thermoplastic synthetic fibers such as polyester and polyamide, and are made of synthetic fiber multifilaments obtained by melt-spinning by conventional methods, and are particularly applicable to polyethylene terephthalate-based polyester fibers. It shows very good effects. The oil composition obtained as described above is applied to synthetic fibers, but the method for applying the spinning oil of the present invention to such synthetic fiber multifilament is usually applied to melt-spun undrawn yarn. It can be applied by known roller oiling, spray oiling, etc. As described above, according to the present invention, the spinning and drawing properties are not hindered in any way during the manufacturing process of synthetic fiber multifilament, and furthermore, particularly excellent weaving properties are provided even in weaving using glue-free waterjet. , stable metal abrasion prevention effect in wet conditions can be obtained. Examples are shown next, but the invention is not limited thereto, and "parts" in the examples indicate weight %.
In addition, regarding the metal wear resistance in wet conditions in the examples,
Measurement and evaluation were performed using the methods shown below. []Measurement and evaluation method of metal abrasion resistance when wet The abrasion resistance between the thread and metal when wet was evaluated using the following method. The initial tension applied to the yarn is 10g (standard), and the strength under the measurement conditions is 20g and 30g, respectively.
While running at a yarn speed of 10 m/min, the running yarn was immersed in water for 0.6 seconds before it came into contact with the friction body than the metal, and then was brought into contact with the friction body. We also investigated various materials for the metal friction body. Friction body (1) 5cm diameter chrome-plated satin pin, roughness 11S Friction body (2) Stainless steel rod The metal friction body should be placed at the front and back in the thread running direction.
The thread was allowed to slide at speeds of 50 to 300 times per minute, and the yarn was allowed to run for 30 minutes to several hours, and then the wear marks on the metal surface were graded and evaluated. Grade 5 (good) →
Ranked as grade 1 (poor). Examples 1 to 3, Comparative Examples 1 to 6 Each oil agent having the composition shown in Table 1 was heated uniformly to 40 to 50°C, and poured into warm water at 40 to 50°C with stirring, and the concentration was 10%. Create an emulsion of each of
An undrawn polyethylene terephthalate yarn (149 denier/24 filaments) that was being wound at a speed of 1000 m/min by a roller oiling method was coated with an active ingredient as an oil agent at a deposition rate of 1.0%. . The undrawn yarn was stretched 3.1 times using a draw twister at a preheating pin temperature of 90°C and a heat setting of 180°C.
A drawn yarn of 50 denier was obtained. The metal abrasion resistance in wet conditions was measured for each drawn yarn according to the evaluation method.

【table】

[Table] As can be seen from Table 1, the composition of the present invention has excellent metal abrasion resistance in wet conditions. However, although Comparative Example 7 has good metal abrasion resistance in wet conditions, roller scum increases during spinning and operability is poor, and furthermore, the reeds and heddles deteriorate during glueless weaving using a water jet loom. Scum accumulation significantly lowers the operating rate and scum adheres to the fabric, impairing the quality of the fabric, and is therefore excluded from the scope of the present invention. Examples 5 to 10, Comparative Examples 8 to 10 Polyethylene terephthalate was spun in the same manner as in Example 1, and each oil agent having the composition shown in Table 2 was added to 1.0%
%, and metal wear resistance in wet conditions was measured in a similar manner.

【table】

[Table] As can be seen from the results in Table 2, the presence of the four components of the present invention showed very excellent wet metal wear resistance.

Claims (1)

[Claims] 1. In a spinning oil containing a smoothing agent and/or a polyalkylene glycol copolymer, an alkali metal salt of an alkyl phosphate having 12 to 18 carbon atoms (component A) and an alkali metal of an N-acyl derivative of an amino acid are added to the active ingredients. It is formulated with four essential components: salt (component B), modified silimanes (component C), and waxes (component D), in which case A+B+C+D
is always between 4.0% and 10% (by weight) of the active ingredients.
A composition with improved metal wear resistance in wet conditions, comprising a composition in which A+B>C+D, and C+D is contained in a proportion of 4% (weight) or less of all active ingredients.