JPH0114349B2 - - Google Patents

Description

[Detailed description of the invention]

<Industrial Application Field> The present invention relates to a spinning oil composition for polyamide fibers, particularly for water jet loom (WJL).
The present invention relates to a spinning oil composition for obtaining polyamide fibers suitable for glue-free weaving. <Prior art> Generally, when producing synthetic fiber yarns such as polyamide and polyester, smoothing agents such as mineral oil and esters are used to impart smoothness, cohesiveness, and antistatic properties to the yarns. Oils containing various surfactants are applied, but WJL's oils for glue-free woven yarns, which use a large amount of water, are particularly suitable for smoothness, cohesiveness, etc., as well as the effect of water on the threads. need to be considered. For this reason, traditionally, WJL
As a lubricant for glueless woven yarn, an lubricant containing wax to impart water resistance has been proposed (for example, Japanese Patent Publication No. 101/1983). However, if an oil containing a large amount of wax is applied to the yarn, the wax will adhere to the drawing rollers in the yarn manufacturing process and to the heddles and reeds in the weaving process, which will not only reduce the operating rate but also cause the scouring process. This has the disadvantage that the wax cannot be removed sufficiently, resulting in a decrease in the dyeability of the fabric. In addition, WJL has recently developed a synthetic fiber multifilament spinning oil for glueless weaving with a molecular weight of 1000 to 1000, which has polyether bond chains to which propylene oxide and ethylene oxide are randomly added.
10-50% by weight of 15000 compounds, wax and/or
Alternatively, an aqueous spinning oil containing 5 to 35% by weight of silicone oil has been proposed (Japanese Patent Publication No. 17308/1983). However, when the content of a compound such as this spinning oil in which propylene oxide and ethylene oxide are randomly added is 10% by weight or more, water resistance, cohesiveness, and smoothness deteriorate. If the molecular weight exceeds 10,000, scum will adhere to the heddles and reeds during the weaving process, reducing the operating rate during weaving and reducing the dyeability of the resulting fabric. Furthermore, with ordinary waxes such as paraffin wax and polyethylene wax used together with the random addition compound of propylene oxide and ethylene oxide, the wax adheres to the heddles and reeds during the weaving process, significantly reducing weaving efficiency and improving the quality of the fabric. Decreases stainability. <Problems to be Solved by the Invention> The present invention prevents the generation of deposits in glueless weaving of polyamide fibers using WJL, improves weaving efficiency, and makes it possible to obtain high-quality products with excellent dyeability. An object of the present invention is to provide a spinning oil composition for polyamide fibers. <Means for Solving the Problems> The present invention achieves the above object, and its gist is to provide oxidized polyethylene waxes 3 to 3 in which polyethylene oxide having an acid value of 10 or more and a molecular weight of 2000 or more is made into an alkali metal salt. 30% by weight and molecular weight 1000-10000
A spinning oil composition for polyamide fibers, characterized in that it contains 2 to 10% by weight of a random addition compound of propylene oxide and ethylene oxide. The present invention will be explained in detail below. First, the oxidized polyethylene wax in the present invention is a polyethylene oxide having an acid value of 10 or more and a molecular weight of 2000 or more, in which part or all of the terminal or side chain carboxyl groups are substituted with an alkali metal such as sodium or potassium. . The oxidized polyethylene used in this oxidized polyethylene wax has an acid value of 10 or more and a molecular weight of 2,000 or more, and preferably has an acid value of 15 to 25 and a molecular weight of 3,000 to 5,000. In this case, if the acid value of the oxidized polyethylene is less than 10, the dyeability will decrease, and if the molecular weight is less than 2,000, the water resistance will decrease, which is not preferable. The amount of this oxidized polyethylene wax needs to be 3 to 30% by weight based on the active ingredients of the oil agent. If the amount of oxidized polyethylene wax is less than 3% by weight, the water resistance will be poor and the product quality will be poor.
If it exceeds 30% by weight, the friction between fibers becomes too low,
It is unsuitable because it causes crumbling of bread, cheese, etc., as well as a large amount of adhesion, which reduces dyeability. Next, random addition compounds of propylene oxide and ethylene oxide are adducts in which a mixture of propylene oxide and ethylene oxide is randomly added to compounds such as fatty acids, aliphatic alcohols, and fatty acid esters of polyhydric alcohols, and propylene oxide and ethylene oxide. It is a compound having a polyether bond such as a random copolymer with an oxide. The molecular weight of this random addition compound of propylene oxide and ethylene oxide is 1,000 to 10,000, particularly preferably 3,000 to 7,000. If the molecular weight is less than 1,000, the abrasion resistance will be poor, and if it exceeds 10,000, deposits will increase during the weaving process, resulting in a decrease in weaving efficiency and the dyeability of the resulting fabric. The amount of this random addition compound of propylene oxide and ethylene oxide is 2 to 10% by weight based on the active ingredients of the oil agent, and if the amount is less than 2% by weight, the effect of improving dyeability will not be sufficient;
If it exceeds 10% by weight, water resistance and cohesiveness will decrease as described above, and deposits will increase during the weaving process, which is not preferable. The spinning oil composition of the present invention contains a smoothing agent, an emulsifier, an antistatic agent, etc. in addition to the above two components. As the smoothing agent, mineral oil, fatty acid ester, etc., which are used in ordinary spinning oils, are used. Also,
As the emulsifier, various nonionic activators can be used, and acids, alcohols, or those obtained by adding ethylene oxide to animal or vegetable oils are suitable. Further, as the antistatic agent, anionic activators, cationic activators, and amphoteric activators are used. Furthermore, when metal wear resistance is required, necessary components such as fatty acids and amino acids can be blended as appropriate. Examples of polyamide fibers to which the present invention is applied include fibers obtained from homopolymers such as nylon 6, nylon 66, and nylon 610, as well as copolymers and blend polymers thereof. The spinning oil composition of the present invention is applied to melt-spun undrawn polyamide yarn by a roller method, a spray method, or the like. In this case, it is appropriate that the amount of oil applied is 0.3 to 0.8% by weight based on the undrawn yarn; if the amount is too large, wax will adhere to the guides and rollers during the drawing process, causing fuzz. If the amount of adhesion is too small, the cohesiveness will be poor, single filament cracking will occur, yarn breakage and fuzz will occur, the water resistance will be poor, and the quality of the fabric will be degraded. The undrawn yarn to which the oil composition of the present invention has been applied can be drawn without any problem according to the conventional method, can be subjected to weaving by WJL without going through the sizing process, has less deposits during weaving, and is dyed. A high-quality product with excellent properties can be obtained. In addition, it is also possible to set the spinning speed to a high speed of over 4000 m/min and use it for weaving without stretching. <Examples> The present invention will be specifically described below based on Examples. Example 1 Nylon 6 chips were melt-spun, and the cooled undrawn yarn was mixed with an oiling roller to form an aqueous emulsion spinning oil with an emulsion concentration of 10% by weight, containing the ingredients shown in Table 1 in the amounts shown in the same table. Apply so that the amount of active ingredient attached is 0.5% by weight,
It was rolled up at a speed of 1200m/min. These undrawn yarns were drawn 3.0 times in accordance with a conventional method, and subjected to an intertwining treatment with a CF value of 50 to obtain drawn yarns of 70d/12f. Using WJL (ZW200 manufactured by Tsudakoma Co., Ltd.), these drawn yarns were beamed with a direct warper, and the total number of warps was 5200, the woven warp density was 110 yarns/2.54cm,
It was woven into flat-woven taffeta at a weft density of 80 threads/2.54 cm and a loom rotation speed of 600 rpm. Table 1 shows the results of evaluating the performance, weavability, and dyeability of the fabric of the yarn. The evaluation was conducted using the following items (methods). (A) Bundleability Take a drawn yarn with a length of 50cm, fix one end of it, apply a load of 35g to the other end, and cut with scissors 10cm above the load.The length of the separated part (cm ). (B) Water resistance (water absorption rate) The drawn yarn was conditioned for 24 hours in a room at 20℃ and 65% RH, then run while immersed in a water bath with a length of 10cm at a temperature of 20℃, and wound at a speed of 10m/min. The drawn yarn was dried in an oven at 105℃ for 2 hours, and after cooling, the weight (Wf) of the drawn yarn was measured.
The water absorption (H) of the drawn yarn after this water bath treatment was measured and calculated using the following formula. Water resistance = H/Wf x 100 (%) (C) Amount of deposits on the heddles and reeds The amount of deposits on the heddles and reeds when weaving 30 weaves (continuous weaving for 7 days) was measured with the naked eye, A (slight) Judgment was made on a four-level scale from ~D (poor). (D) Weaving efficiency It is shown as the actual efficiency when 30 hiki is woven. (E) Dyeability After scouring the gray fabric using 0.1% by weight of Actinol R-100 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) at 60°C for 10 minutes, dyeing was performed using the following dyeing recipe in the same bath, and the dyeing grade was changed to wax. Table 1 not blended
Using No. 15 scouring cloth as standard, color difference (grades 1 to 5) of gray scale for discoloration and fading (JIL-L-804)
It was subdivided into grades 1 to 10, and was evaluated up to grade 0.5. Dyeing recipe Telon Fast Navy Blue R (acid dye manufactured by Bayer) 0.5% owf Sandozol KB (leveling dye manufactured by Sandoz)
1.0% owf acetic acid 0.2ml/l Heat up to 100℃ for 45 minutes, boil for 60 minutes, dye,
Dry at 105°C for 30 minutes.

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【table】

[Table] As is clear from Table 1, the cohesiveness and water resistance of yarns coated with the oil composition of the present invention are compared with yarns coated with conventional oil compositions containing polyethylene wax or paraffin wax. It was comparable and in good condition. Furthermore, the yarn to which the oil composition of the present invention has been applied has less deposits on heddles and reeds during weaving, and
The weaving efficiency was also excellent compared to the comparative oil agent and the conventional oil-applied yarn, and the quality of the fabric was also of high quality with few defects. Furthermore, yarns and fabrics coated with conventional oils containing polyethylene wax or paraffin wax have poor dyeability, whereas yarns and fabrics coated with the oil composition of the present invention have good dyeability. And it was spotless. <Effects of the Invention> As described above, the oil composition of the present invention is formed by blending polyethylene oxide wax and a specific component of a random addition compound of propylene oxide and ethylene oxide in a specific ratio. Compared to conventional oils that form a strong film with resin, wax, etc. to provide binding properties and provide impact resistance and water resistance during weaving, it does not create a strong film on the yarn and provides impact resistance during weaving. In addition to providing sufficient properties, by imparting these properties, the amount of deposits on the heddles and reeds during weaving can be greatly reduced, and the quality of the fabric can be extremely high. Moreover, because the oil composition of the present invention uses polyethylene oxide wax and a random addition compound of propylene oxide and ethylene oxide, the resulting gray material has poor scouring properties, unlike conventional oil compositions containing a large amount of wax. There is no decrease in dyeability, and the obtained gray fabric has good scouring properties and provides a fabric with excellent dyeability.

Claims (1)

[Claims] 1 3 to 30% by weight of polyethylene oxide wax made from an alkali metal salt of polyethylene oxide with an acid value of 10 or more and a molecular weight of 2000 or more, and a polyethylene oxide wax with a molecular weight of 1000 or more
1. A spinning oil composition for polyamide fibers, comprising 2 to 10% by weight of a random addition compound of propylene oxide and ethylene oxide.