JPS58104283A - Oil agent for polyurethane elastic fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention #i*9 is a lubricant for urethane elastic fibers. Irrespective of the running speed of KIRK, the %O with respect to O oil is added to obtain the polyurethane elasticity IIIi.

Polyurethane elasticity has a lower Young's modulus than other clothing fibers and is very easy to stretch, so it is difficult to warp and knit.
Frictional resistance with guides etc. in IHC especially 4
X″$<L. Also, since the stickiness between the wheels is large, unless an oil agent with anti-sticking properties is applied, the threads will stick to each other on the cheese and the unwinding performance will be poor. , has the disadvantage of frequent thread breakage in the post-processing process. Therefore,
Reduce yarn OII wire resistance (-improve so-called smoothness)
, it is important to further improve the unwinding property), and its friend & urethane elasticity - compared to other O synthetic materials.
k) Φ where O is the spirit that attaches a large amount of oil during the spinning process
Recently, the elasticity of the tongue in the middle of the 9th grade - 400 ~... Is it possible to use it at even higher speeds?B1 has a particularly low frictional resistance during high-speed running. It is requested. If the oil adhesion rate is high, the oil agent YASKAMU (extracted by the oil component) will be extracted by the oil component, OII body or high viscosity component in the oil agent will be a rigid body. Since a large amount of separated material O) adheres to the product, there is a drawback that it can become clogged due to adsorption of air lint while contaminating the product, and requires frequent cleaning.

It also has the disadvantage that oil seeps out from the beam in the cheese and contaminates equipment, machinery, etc.

Conventionally, in order to reduce the stickiness and frictional resistance of the thread, talc was used as a smoothing agent, mineral oil was used as the main ingredient, and in addition, A-O higher fatty acid ester, ethylene oxide adduct of higher alcohol, and higher fatty acid were added.

Attempts have been made to use Yuaisha oil agent by blending ethylene oxide adducts, metal soap, and modified silicone◆.

However, these methods do not provide sufficient anti-adhesive effects, the smoothing agents cause serious wear on spinning machines, warping machines, knitting machines, etc., and scum is generated during the redistricting and knitting processes. However, it has disadvantages such as thread breakage and deterioration of product quality.

In view of the current situation, the present inventors have conducted intensive research to develop a polyurethane elastic fiber oil that exhibits excellent effects with a small amount of oil coating, and have finally arrived at the present invention. That is, the present invention provides O diorganolisiloxane (4) having a viscosity of 100 centistokes or less at its °C.
and aooo ~ 1s000 centistotus O diorganoborisi ν xane (to)) as an essential component,
The weight ratio of both components is cA):(B) -85 to 9
5: A polyurethane elastic line miscellaneous oil agent characterized in that the ratio is 16 to 5, and the total blending amount of both components is 40% or more by weight based on the total oil component.

The O oil of the present invention will be explained in more detail below.The O oil of the present invention contains the following 8 types of O diorganogirishita kidneys as main active ingredients in a specific proportion.
hinchesseex below O diorganopolysiloxane fake) Viscosity (lazy ℃)! IooO ~ 1 unit ooo centistostus O diorganoboric acid xane diorganomeric group As the xane, dimethylboric acid is usually used, but methyl group 01 part other O alkyl group ÷ ~ ~ noalkyl group, vinyl group, It may also be substituted with a monovalent organic group such as a group containing a chemical compound. It is also possible to use a polyskiene having a hydroxyl group, a syl group in an alkoxy group, etc. at the end. Additionally, a small proportion of the methyl groups are replaced with hydrogen.

The blending ratio of diorganoboric acid xane (4) and φ) is (4:(n)-a a ~ e st : z
5-at.

Diorganoborisilicone (II) If the proportion exceeds the above range, the viscosity of the oil will increase and it will be difficult to apply it uniformly.If it is too low, the static friction coefficient will become very hot.
When the slimy feeling of the O fibers on the cheese surface disappears, the smoothness of the co-Km fibers decreases. Diorganoboric acid xane (A) and -) #1 molecular weight member in the present invention)
Their major feature is that they can be mixed in any proportion since they are similar in structure even though they are exactly the same. In other words, when diorganoborisiloxane (4) is used in combination with polyether-modified silicone, which is usually used for urethane fibers, the compatibility between the two is poor, and it is necessary to use an appropriate medium to form a uniform oil agent. t) Tsuna "requires oil. However,
Many of the binder oils are organic solvents that easily elute the eSmO oligomers, resulting in the disadvantage of causing scum generation or, in some cases, promoting the coloring of fibers by nitrogen oxides. In the present invention, it is not necessary to use a binder oil, and by changing the mixing ratio, the viscosity and smoothness of the oil can be freely changed, and the drawbacks caused by the use of a binder oil can be solved.

Next, the action of each active ingredient in the O oil agent of the present invention will be explained. Diorganogiri Silxane (4) is particularly effective for O smoothness at high speeds.
The smoothing action of O exhibits excellent smoothness (low frictional resistance) when the O high rate is increased to 1/min or more.
If it is less than 0 centistotus, it will not change depending on the viscosity. However, particularly preferred is centistokes.On the other hand, diorganoborisci centistokes have a large frictional resistance when the yarn runs at high speeds, but conversely, they are superior to low-speed milling yarns with low running speeds. It has a good effect.

These O-diorganopolysiloxanes are not compatible with the O-oligomers in the system regardless of their viscosity, and are also poorly compatible with various additives. In order to suppress the amount of scum produced in step IIc, the post-processing steps of polyurethane elastic fibers, such as -
The speed at which the yarn travels in processes such as warping, warping, and rewinding is extremely diverse, ranging from as low as 79 mm to as high as 64,001 I/+. However, the smoothness of the yarn is dependent on the running speed, and a yarn that has good smoothness at low speeds does not necessarily have good smoothness at high speeds. therefore,
As an oil agent to be attached to polyurethane elastic thread, any speed from low to high speed #! The diorganopolysiloxane (4) used in the present invention has the ability to improve smoothness at high speeds, while the diorganopolysiloxane (4) #i has the ability to improve smoothness at low speeds. Each has the ability to improve smoothness, and each component ratio,
By adjusting the content in the oil as appropriate, you can achieve a wider range of running speeds! This has succeeded in reducing the frictional resistance caused by friction.

Normally, the viscosity of the oil agent is a value that is convenient for oiling and can be uniformly applied.In order to keep the viscosity of the oil agent below aO centistokes, the viscosity and blending ratio of the ingredients are adjusted appropriately within the above range.◇Furthermore, adjust the viscosity and the amount of adhesion. Although it is possible to appropriately incorporate antistatic agents etc. into the Tomome O diluent, the total amount of diorganopolysiloxane (4) and (B) is usually 40% by weight or more based on the total oil agent, The weight is above 50 weight. Thinners that can be used include mineral oil (preferably redwood viscosity (6°C) go seconds or less), aliphatic alcohols with 1 or more carbon atoms, saturated fatty acids with 2 or more carbon atoms, and saturated fatty acids with 1 or more carbon atoms. C 12 or more O ester obtained from the above saturated aliphatic alcohol, carbon number m ~ IQ01
Examples include esters of -trivalent aromatic carboxylic acids and saturated aliphatic alcohols having 1 or more carbon atoms, ethers or polyethers having a carbon Wk of 18 or more (the number of ether/^ bonds is 6 or less). Further, it is also possible to use a fluoride compound in which the hydrogen atom of the aliphatic alcohol or fatty alkyl group O of the aliphatic alcohol group is replaced with a fluorine atom. It is also possible to incorporate polyether-modified silicones as part of the diorganopolymer or as part of additional ingredients.

The present invention will be explained below with reference to Examples. In the Examples, Os) and Os are based on weight unless otherwise specified. Moreover, the unwinding property in the examples is the minimum elongation rate required to stably wind up the threads in the innermost layer of cheese using a driving four-wheeler and a winding roller. Smoothness (4) was measured by the radar method. However, the friction body is made of metal with a matte chrome plating, and its O surface speed during rolling is 0.11 m7min. The load applied to the measurement sample was 0.19 per thread. Smoothness (II) is evaluated by the coefficient of friction of the yarn against the friction surface of the knitting needle.
The measurement is made by Keikiki Kogyo Co., Ltd. IF-M@t@r R-11511
! The measurement principle is as follows: 1. Thread the thread onto the knitting needle at a friction angle g.The thread is run in one direction, and the thread tension is measured before and after passing through the knitting needle. From this, calculate the friction coefficient using the following formula. In addition, the speed can be changed from 0 ■/min to 500 min. Friction angle In - natural vs. adversary - coefficient of friction is evaluated by the scum test method.

A razor blade was applied to the thread that was unwound at 10 m/7 min and wound up to 30 s/min, and the amount of white sticky substance adhering to the thread was visually determined.

Example L 10 parts of methylene bis(4-phenylisocyanate) and molecular weight 1g1oo O polytetramethylene glycol S
Prepoly! is reacted with O part at 80℃ for 60 minutes. - was obtained, and this was dissolved in 90 parts of dimethylformamide, and while keeping it at 0°C, dimethylformamide! IO part km solved 1
, B-propylene cyanide was reacted with 1.4 parts. The obtained viscous polymer solution (viscosity at go'cK lJ!00
The yarn was spun into an air stream heated to goo℃ through a spinneret with a hole diameter of 0.15 m and a number of holes of 800, and the shaped yarn was converged by mechanical false twisting when the solvent content reached 1 arc. After that, an oil agent was applied and the cheese was rolled up using an aomy5 to obtain a cheese weighing so much.

Table 1 shows the results of examining the quality of polyurethane elastic yarns obtained by changing the oil composition and their cheeses. As can be seen from the table, when the oil of the present invention is used, sufficient effects are achieved even with a low oil adhesion rate (excellent unwinding properties and smoothness).
However, none of the comparative examples using oils with similar compositions showed good results in all these respects.

Claims (1)

[Claims] The viscosity at gi'Bc is less than Zoo centistokes
Diorganoelectronics middle sun (4) and 5ooo~18
000 Centistortus O Diorganopolysiloxane (
1) as an essential component, and the blending ratio of both components is (4): (1) -・Black~-5szs~6), and the total amount of one and both ingredients is the total amount of oil. Polyurethane elasticity 11AIa characterized by having a weight resistance of 40% or more for the ingredients
M sauce.