JPH0268363A - Nylon 66 yarn - Google Patents

Abstract

PURPOSE:To obtain the subject yarn generating slight white powder in warping or knitting even after aging of long period of time by adding oil containing within specific amount of ethylene oxide addition product to specific nylon 66 multifilament. CONSTITUTION:0.3-1.5wt.% oil comprising (A) 25-60wt.% emulsifier composed of 2-6 species of ethylene oxide addition product (<=3wt.%), alkenyl succinic acid, alkylimidazoline amphoteric compound, alkylalkylate sulfonic acid Na-salt or K-salt, alkyldiethanolamide and alkylphosphate Na-salt or K-salt, and antistatic agent and (B) 75-40wt.% lubricant agent composed of mineral oil and/or alkylalkylate (alkyl is 4-20C) is added to nylon 66 multifilament having 0.035-0.045 birefringence and 50-100% breaking elongation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to nylon 66 yarn. For more details, see 3.
Regarding nylon 66 multifilament obtained by spinning at a high speed of 000 to 6000 m/min, the process performance of post-processing (user) is not deteriorated even after the multifilament is stored for a long period of time. That is, it relates to a nylon 66 multifilament that does not generate white powder during warping, knitting, etc. even after a long period of time.

[Prior Art] In recent years, high-speed spinning has been used to reduce costs in the production of nylon fibers.

High-speed spinning of nylon is generally 3000 to 6000 m/m.
It is common that the speed is preferably 4000 to 6000 m/min. The nylon fiber spun in this way is characterized by a birefringence Δn of 0.035 to 0.045, a breaking elongation of 50 to 100%, preferably 50 to 80%, and is flexible. Because it has a soft texture and uniform dyeability, it is used not only in the false twisting field, but also in a wide range of applications such as textiles and fabrics. However, when the nylon 66 multifilament is coated with a conventional emulsion-based oil agent during the high-speed spinning process, the nylon 66 multifilament runs while coming into contact with guides and reeds when warping is carried out as warp threads of textiles. At that time, some of the white powder adhering to the surface of the single yarn falls off and adheres to the guide and reed, and as the warper ages, the amount of adhesion increases and the tension increases abnormally, causing yarn breakage, causing problems. It becomes.

On the other hand, in high-speed spinning of polyamide filaments,
The oil agent provided is proposed in Japanese Patent Publication No. 31931/1983 for the purpose of improving textile defects (warp stripes) caused by an oil agent containing oleyl oleate as a main component. In addition, it was proposed in JP-A-60215872 as an oil composition for nylon 6 POY (mainly composed of a copolymer of ethylene oxide and propylene oxide) that has good processing operability and yields high-quality processed yarn (with little fuzz). There is. However, these oil compositions are processed into nylon 66 in a high-speed spinning process.
When applying it to multifilament, after long-term storage (
For example, if it is used for 10 months), there will be a problem that white powder will increase during the washing and knitting processes. In addition to the above, regarding the oil agent for high-speed spinning nylon 6romultifilamen I,
There is no suggestion to be made, and if a normal oil agent is used as it is for high-speed spinning by sliding it, there is a problem that white powder will be generated if the nylon 66 multifilament is used after a long period of storage.

In the field of high-speed spinning clothing, spinning process oil agents (
There is a known technique (Japanese Patent Publication No. 60-37222) in which a non-water-containing oil agent is added to the yarn (Japanese Patent Publication No. 60-37222), but in this case, it is possible to prevent the generation of white powder, but the spinning stage is filled with oil smoke due to the oil agent scattering. In order to remove this, a large-scale recovery device is required, which raises the problem of increased costs. Furthermore, there is also the problem that the cost of the oil agent increases significantly.

[Inventive power <84 Problems to be resolved] The present inventors have conducted extensive studies on the generation of white powder in Section 1, and found that the degree of precipitation of white powder from nylon 66 multifilament produced by high-speed spinning is due to emulsifier ethylene oxide (hereinafter referred to as 14EO)
We discovered a surprising fact that there is a close relationship with the content of adducts.

The inventors of the present invention have conducted extensive research on oil formulations that provide a stable emulsion, are inexpensive, meet post-processing performance, and reduce the amount of EO adducts in the emulsifier as much as possible. They also discovered a method for making emulsions stable and completed the present invention. An object of the present invention is to provide a nylon 66 yarn that does not produce white powder as described above.

[Failure to solve the problem]

The present invention has a birefringence Δn of 0.035 to 0.045,
It is made of nylon 66 multifilament with a cutting elongation of 50 to 100%, and the following oil is applied to the filament at 0%.
．． Nylon 66 characterized by having 3-1.54%
Yarn (a) 2 to 6 types of ethylene oxide adduct (3 wt% or less), alkenyl succinic acid, alkylimidazoline amphoteric compound, alkyl algylate sulfonic acid Na or salt, alkyl jetanolamide, alkyl phosphate Na or salt Emulsifier and antistatic agent composed of seeds (25-60 匈L%) (b) Smoothing agent of mineral oil and/or alkyl alkylate (75-404%) However, the number of carbon atoms in the alkyl group is 4-20 EO Adducts are EO adducts of higher alcohols and EO/
PO adducts, PEG esters, castor oil EO adducts and EO/PO adducts, nonylphenol EO adducts, polyethylene glycols, polyoxyalkylamines,)
Examples include IJ methylolpropane EO additives.

The number of moles of EO may be 1 to 60.

For brands spun at high speed using ordinary nylon 66 chips, the amount of EO adducts in the oil agent is 3 to 18 wt%, preferably 3 to 10 wt%, which is enough to prevent white powder, but if an antistatic agent of EO adducts is mixed in. Special brands spun at high speed using nylon 66 chips contain a lot of white powder and EO in the oil.
The adduct has a small amount of white powder in the range of 0 to 3 wt% (more preferably 0 wt%. In other words, EO is added to all the convexities of the smoothing agent, emulsifier, and antistatic agent (= J is not added). That is to say.

The oil components include alkenyl succinic acid, oleyl oleate sulfonic acid Na salt, oleyl jetanol amide 1-, lauryl imidacillin amphoteric compound, oleyl alcohol phosphate 1-Na salt, etc. In addition, higher fatty acids and You can also use salt for the Na. It is difficult to distinguish between emulsifiers and antistatic agents because some emulsifiers have an antistatic effect, and others act as emulsifiers even though they are antistatic agents, so emulsifiers and antistatic agents are referred to as emulsifiers and antistatic agents. The emulsifier and antistatic agent are 25 to 6 to ensure the emulsion stability of the emulsion.
If it is less than 25wt%, the emulsification will be poor, and if it is more than 60wt%, the leveling agent will decrease, resulting in nylon 66.
This is not preferable because the smoothness of the yarn deteriorates.

The smoothing agent is mineral oil or fatty acid ester, and each may be used alone or in combination.

If the content of the smoothing agent is less than 40%, the smoothness of the nylon 66 yarn will deteriorate and yarn breakage will increase during the spinning process and post-processing, which is not preferable. On the other hand, if it exceeds 75 iyt%, the amount of emulsifier decreases and the emulsion stability of the emulsion deteriorates, which is not preferable. Therefore, in order to maintain the stability of the emulsion and to prevent thread breakage during spinning and post-processing, 75 to 40%
The region of is preferred.

If the amount of oil applied during spinning is less than 0.3 wt%, smoothness and cohesiveness cannot be maintained, so thread breakage is likely to occur during the spinning process.
If it exceeds 1.5 wt%, white powder will increase, which is not preferable. Therefore, the amount of oil adhered to the nylon 66 multifilament is preferably 0.3 to 1.5 wt%, more preferably 0.5 to 1.0 wt%.

The oil agent composition for nylon 6.6 yarn produced by high-speed spinning of the present invention has a white powder reducing effect on filaments having a breaking elongation of 50 to 100%, and has a white powder reduction effect on ordinary (conventional type) nylon 6, nylon 66 Fillanone 1~ does not produce white powder (conventional EO (oil) containing 20 to 40 wt% of additives may be used).

White powder is an oligomer of nylon 66, and because the orientation of the amorphous part of the multifilament spun at high speed is loose, EO adducts in the oil agent easily enter the inside of the single filament along with water from the surface of the single filament, causing changes over time. It is thought that oligomers are precipitated in this process.

The amount of oil attached is nylon 6romultifilamen 1-2.
06 g was added 4 times with 3 cc of dichloromethane using a quick residual fat extraction device manufactured by Tokai Keiki Co., Ltd. (heating section 110°C).
) is the value extracted and calculated using the following formula.

(Residual fat amount g/2g)X100 [%] 〔Example〕 Next, the present invention will be specifically explained with reference to Examples.

Example 1 Using a spinneret with 13 spinning holes, ordinary nylon 66 polymer was melted and discharged, cooled with cold air in a chamber under the spinneret, and the following water emulsion-based oil agent (10 tons) was applied during the spinning process. %) was added to the yarn and wound into a cheese shape in a winder at 4000 m/min without drawing to make a 40 d/13 f nylon 66 multifilament, and the generation of white powder was investigated.

The compounded oil used in the present invention and the conventional compounded oil are shown below. The content of EO adducts is shown in the column to the right of the oil color, and the EO adducts are marked with * in the left column.

Compounded oil No, I EO adduct 0 t%2 Ethylhexyl palmitate Alkenyl succinic acid lauryl imidacillin Amphoteride Oleyl oleate Sulfonic acid Na salt Oleic acid jetanolamide Oleyl alcohol bosphate Na salt 6.5wt%5
5wt% 6.5wt% 3.9-t% 7,^1% 10.3 All t% Compounded oil No. 2 EO adduct 0wt%2 Ethylhexyl palmitate 40wt% Mineral oil Lendwood viscosity 60 seconds 30% alkenyl succinic acid
5.5 LIlt% lauryl imidazurin amphoteric compound 3.9 wt% oleic acid jetanolamide
5.0wt% oleyl alcohol phosphate Na salt 6.5wt% oleyl oleate sulfonic acid Na salt 8. byt% compounded oil No. 3 EO adduct 04% mineral oil Redwood viscosity 60 seconds 45-t% alkenyl succinic acid
6.5wt% lauryl imidacillin amphoteric compound 5.0wt% oleic acid jetanolamide
], 9.5iyt% oleyl alcohol phosphate N, salt 4.0wt% oleyl oleate sulfonic acid Na salt 20tst% blended oil agent No. 4 EO adduct 3wt% 2ethylhexylbalmite-1- *POE (25) Castor oil ether Alkenylsuccinic acid oleyl oleate Sulfonic acid Na salt Urylimidacillin Amphoteride Oleic acid jetanolamide Oleyl alcohol phosphate-1.Na salt 62wt% 3wt% 6.5% 7.8wt% 3.94% 10.3wt % 6.5 t% Compounded oil No. 5 EO adduct 6.5 t% 2 ethylhexyl palmite-I, alkenyl succinic acid lauryl imidacillin amphoteric oleyl oleate I, sulfonic acid tra salt* Stearyl alcohol (EO) 5 Phosphe-I salt oleic acid jetanolamide 55 wt% 6.5 wt% 3.9 wt% 7.8 wt% 6.5 wt% 10.3 tvt% Compounded oil agent No. 6 EO I' addition 15 wt% oleyl oleate 63%* POE
(25) Castor oil ether 10% alkenylsuccinic acid 5wt% lauryl imidapurine amphoteric compound 3wt% oleyl oleate Tosulfonic acid Na salt 6wt%* Stearyl alcohol (EO)
,.

Bosphate with salt 54% oleic acid jetanolamide 8wt% oil agent No. 7
EO adduct 25. ht%2ethylhexylpalmite) 56.9wt%*POE (5) Oleyl ether 25.6i% alkenyl succinic acid
3.7w1% lauryl imidapurine amphoteric compound
4.6wt% oleyl oleate sulfonic acid Na salt 4
．． 6wt% oleic acid jetanolamide 4.6w
t% (white powder test) Cheese of 40d/13f is placed in a drum (metal container 200 ff1) shown in FIG. 1 together with water 31, and the drum is completely sealed with a lid equipped with a com seal. This drum can be heated to 50°C.
After leaving the drum in a controlled room for one week, the drum was removed, the lid was opened, and the nylon 66 multifilament cheese was taken out. This nylon 66 multifilament is passed through a guide 7.8 and then through a reed 9 using the apparatus shown in Fig. 2 at a speed of 600 m/min for a certain period of time (
Collect (collect) the white powder that fell off after running (for 10 minutes) and the white powder that adhered to the reed, measure the amount of white powder and the amount of running yarn using a Mettler balance, and calculate the amount of white powder (mg) per 1 kg of nylon 66 multifilament. The results are shown in Table 1 and Figure 3.

As is clear from Table 1 and Figure 3, the amount of white powder produced has a strong correlation with the content of EO adducts in the emulsifier, and the more EO adducts are present in the blended oil, the more white powder there is.

Therefore, it can be concluded that the main cause of white powder precipitation is EO adducts.

Nos. 6 and 7 have a fatal disadvantage of having a large amount of EO adducts and, accordingly, a large amount of white powder.

On the other hand, Nos. 1 to 4 of the present invention have a small amount of EO adducts, so the white flour is about 1/10 of No. 7, which is an amazing effect.

Example 2 ■ Using a spinneret with 10 spinning holes, nylon 66 chimp kneaded with EO (-J additive antistatic agent, Owt%) was melted and discharged, and cooled with cold air in a chamber under the spinneret. In the spinning process, 0.7 wt% of each of the oil agents No. 1 to 7 described above was applied to the yarn without drawing.
A nylon 66 multifilament of 3 (M/10 f) was made by winding it into a chizular shape with a winder at a speed of 500 m/min, and the generation of white powder was investigated using the white powder test method described above. The results are shown in Table 2 and Table 2. Shown in Figure 3.

In the white powder results of 40d/13f shown in Table 2, EO adducts are O~
Although it is extremely low up to 6.5%, white powder is obtained for a special brand of 30d/10f obtained by high-speed spinning using nylon 66 chips kneaded with 1.0% of EO-loaded antistatic agent. It was found that 6.5 wt% of the EO adduct in No. 5 was insufficient, and the amount of white powder in No. 1 to 4 was small, indicating that the white powder generation was acceptable. Furthermore, No. 1 to 7
The 104% emulsion has good emulsion stability and causes no operational problems (in the spinning process).

〔Effect of the invention〕

According to the present invention, the nylon 66 yarn produced by high-speed spinning is inexpensive, and a water emulsion oil with good emulsifying property is applied to the yarn by a gear pump system or an oiling roll system in the spinning process so that the amount of the oil applied to the yarn is 0.3 to 1. If 5 wt%, more preferably 0.5 to 1.0 wt% is added, ordinary nylon 6
Regarding 40d/13f spun at high speed using 6 chips, white powder generation which was conventionally 38 to 150 cm/kg can be suppressed to 10 to 18 mg/kg.

Also, EO adduct antistatic agent 1. Owt% kneaded nylon 66
Regarding 30d/10f spun at high speed using a chip, the white powder generated from 120 to 360 mg/kg in the past can be suppressed to 45 to 70 mg/kg.

Therefore, the high-speed spun nylon 66 yarns coated with oil agents No. 1 to 4 are different from ordinary nylon 66 chips and E
Both brands that are spun using a lip containing an O-adduct antistatic agent have a white powder prevention effect, and when warpered and knitted for textile warp or tricot, there is less white powder and stable performance is achieved. can get.

[Brief explanation of the drawing]

FIG. 1 shows a schematic diagram of a humidity control device using nylon 66 yarn. FIG. 2 shows a schematic diagram of the white powder testing apparatus. FIG. 3 shows a graph of the relationship between the EO adduct content and the amount of white powder generated. 1- Drum lid, 2- Drum 2001,
3- Water 3ρ, 4- Nylon 66 thread, 5- Gold
Net, 6-nylon 66 thread, 7.8-guide,
9- Reed 22G, 10 winder (600m/
min )

Claims (1)

[Claims] Birefringence △n is 0.035 to 0.045, and cutting elongation is 5.
It is made of nylon 66 multifilament that is 0 to 100%, and the following oil agent is applied to the filament at a rate of 0.3 to 1.
．． Nylon 66 yarn characterized by having 5 wt% (a) Ethylene oxide adduct (3 wt% or less), alkenyl succinic acid, alkylimidazoline ampholyte, alkyl alkylate sulfonic acid Na or K salt, alkyl diethanolamide, alkyl phosphate Na or K
Emulsifiers and antistatic agents composed of 2 to 6 types of salts (25 to 6 types)
60wt%) (b) Mineral oil and/or alkyl alkylate smoothing agent (75-40wt%) However, the number of carbon atoms in the alkyl group is 4-20