JPS60181368A - Spinning oil agent for false twisting processing - 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 relates to a spinning oil for false twisting, and more specifically, it has good stability during storage and use, does not stain heater plates etc. due to taring, and The present invention relates to a spinning oil for false twisting that can reduce the fuzz of twisted yarn and increase the operating rate of a loom, and particularly to a spinning oil for simultaneous false twisting of undrawn yarn or highly oriented undrawn yarn.

The spinning oils that have been widely used for false twisting processing are: ■Polyether, high-grade resin acid ester, mineral oil, etc., used as a base oil or a mixture of two or more, and ■
Anions such as alkyl phosphates and sulfonate metal salts, or cations and nonions are added as antistatic agents, and (2) ethylene oxide adducts of higher fatty acids are added as emulsifiers.

However, among conventional spinning oils that use esters or mineral oil as a base oil, the oil that falls onto the false-twisting heater deteriorates when heated and tends to change into a tar-like state, resulting in increased fuzz in processed yarn and crimped beds. There was a problem in that this resulted in the occurrence of thread breakage, etc., and as a result, thread breakage occurred frequently. On the other hand, polyether type base oils self-volatilize and are less likely to turn into tar, which makes them less likely to cause the problems described above, so the proportion of polyether type base oils used has recently been increasing. However, the rate of false twisting has recently become extremely high, which requires processing at high temperatures. The amount of tar generated from the electric agent is significant, and heater contamination due to "yarn scraping" caused by scaled inorganic substances is significant, and the cleaning cycle of the heater is extremely short. In addition, in the above-mentioned spinning oil, the emulsifier component added to improve dispersion stability tends to turn into tar, which is a major factor that necessitates shortening the cleaning cycle. Therefore, in order to cope with the increase in the speed of false twisting, it is necessary to establish a technology that can solve the problem of turning spinning oil into tar. Furthermore, as the speed of false twisting increases, the frictional resistance experienced by the yarn increases and the amount of fuzz generation naturally increases, so it is necessary to further improve the feeding performance of the spinning oil.

Under these circumstances, the present inventors have developed a method for high-speed false twisting processing.
We are conducting various research with the aim of developing a spinning oil for false twisting that has excellent stability that can be applied to high temperatures, has good dispersion stability and thermal stability, and is difficult to tar), and has excellent lubrication performance. It's here. The present invention was completed as a result of such research, and its composition is as follows: (1) A random or block copolymer made by adding propylene oxide and ethylene oxide to an alcohol having at least one hydroxy group in the molecule. A type of polyether which is a polymer and has a molar ratio of propylene oxide of 40 to less than 100, and the sum of the molecular weights of propylene oxide and ethylene oxide to be added is 1000 to 500. Or two or more types, the total weight of which is 90 or more, ■ Antistatic agent consisting of a dialkali metal salt of a higher dibasic acid: 5
A polyether-modified silicone in which propylene oxide and ethylene oxide are added to a polymer of O-dimethylsiloxane with a weight φ or less, the molecular weight is 5000 to 20000, and the addition ratio of the added propylene oxide and ethylene oxide is molar. An antifouling agent consisting of a modified silicone having a ratio of propylene oxide of 30 to 100 q6, and a ratio of added ethylene oxide and propylene oxide to the modified silicone of 50 to 90, containing a weight ratio of 5 or less, The main feature is that it does not substantially contain emulsifiers. 1) The base oil used in the present invention is polyether alone, alcohol with propylene oxide and ethylene oxide added randomly or in blocks; The alcohol mentioned here can be arbitrarily selected as long as it has at least one hydroxy group, but typical examples include butanol, propylene glycol, trimethylolpropane, sorbitol, and the like. The types of these alcohols are appropriately selected depending on the number of moles of propylene oxide and ethylene oxide added, that is, the target molecular weight.In particular, when it is desired to increase the molecular weight, it is better to select an alcohol with a large number of human gastric xyl groups. The addition ratio of oxide and ethylene oxide must be 40 molti or more for the propylene oxide portion, i.e., the oxy-1,2-propylene portion, and less than 60 molti for the ethylene oxide portion, i.e., the oxyethylene portion; If the ratio is less than 40 molt, the electrostatic properties of the oil will be insufficient, and static electricity will be generated significantly due to friction between the thread and the system.However, if the addition ratio of propylene oxide is 100 molt.
% ruti (ie, the addition ratio of ethylene oxide is 0 mol), the self-emulsifying effect of the polyether disappears, and the addition of an emulsifier becomes necessary. In addition, in the case of 100% PO, the volatility of the polyether itself decreases and it becomes more likely to turn into tar, so in order to avoid these drawbacks, it is necessary to use ethylene oxide even if it is a small amount, preferably 10 mol ethylene oxide. It is better to use the above ethylene oxides together. In this sense, the preferable addition ratio of propylene oxide and ethylene oxide is 50150~
80/20 (mol%), preferably 5 o/s o
-90/10 (Morti), and by setting such an addition ratio, a high level of antistatic property can be ensured. Furthermore, in order to achieve the object of the present invention, the total molecular weight of the added oxy-1,2-propylene moiety and oxyethylene moiety should be in the range of 1000 to 5000, preferably in the range of 1500 to 6000). If the total molecular weight is less than 100, the oil film strength will be poor when used as a spinning oil, and the fluffing suppressing effect will not be sufficiently exhibited. However, if the total molecular weight exceeds 8,000, the running frictional resistance will be extremely high, and therefore, the yarn will be seriously damaged by the thread welding parts such as guides during high-speed false twisting, which is not preferable.

Next, as an antistatic agent, a dialkali metal salt of a higher dibasic acid is used, and this is a component that plays a particularly important role in the composition of the spinning oil component of the present invention, and there have been no examples of this being used in the past. It can be said that

A specific example of the higher dibasic acid mentioned here is alkyl (C
nHzn, +1" but 10≦n≦20) succinic acid, glutaric acid, adipic acid, alkenyl (CnH2H□: however, 10≦n≦20) succinic acid, glutaric acid, adipic acid,
Na and K are representative examples of the alkali metals. However, anions such as dialkyl phosphates and gold salts of sulfonates have been commonly used as antistatic agents for spinning oils, but these tend to deteriorate when heated on a false-twisting heater and turn into a tar-like substance. As deterioration progresses, it tends to become mineralized and turn into keratinized metal salts. These inorganic substances accumulate on the heater and turn into keratinized scale, and the polymer is scraped off from the threads running on top of it, causing the problem that this "shavings" promotes staining of the heater. However, these problems become more noticeable as the speed of false twisting increases. However, the dialkali metal salts of the higher dibasic acids mentioned above have a metal ion bonded to a carboxyl group, so they are difficult to form inorganic salts such as phosphates and sulfates.
Since it is difficult to scale, contamination of the heater is significantly suppressed.

Next, the modified silicone used as an antifouling agent is a polyether-modified silicone in which propylene oxide and ethylene oxide are randomly or randomly added to a dimethylsiloxane polymer, and the molecular weight is 500.
It must be between 0 and 20,000 qb, and between 1 and 90 qb of the added pyrene oxide and ethylene.

However, if the molecular weight of the modified silicone is less than 5,000, the strength of the film on the false-twisting heater will be low and the effect of preventing scale accumulation will be reduced. On the other hand, if the molecular weight exceeds 20,000, the running friction resistance on the heater and guides due to the silicone that falls off increases, which is undesirable. Also, the addition ratio of propylene oxide and ethylene oxide is
If the amount of propylene oxide is less than 30 moles, the heat resistance of the modified silicone itself will be poor, and the compatibility with the base oil will be poor, resulting in insufficient stability and heat resistance of the oil, and tar formation may be inhibited. It disappears. However, when propylene oxide is added alone, water solubility is lost, and the oil component is less likely to come off during scouring, which is a subsequent process, and this causes dyeing spots. The preferred addition ratio of propylene oxide and ethylene oxide is 30 for the former.
~90 (molti): the latter 70~1o (Cnyl 俤), preferably the former 40~70 (molti): the latter 60~30 (
molti) range.

Added propylene oxide and ethylene oxide%: Modified alcohol is in the range of 50% to 90%, preferably 60% to 80%; if this modification rate is less than 50%, compatibility with other oil components may occur. If the solubility is poor, the stability of the stock solution will be poor. On the other hand, if it exceeds 90, the characteristics of silicone,
That is, the interfacial tension decreases, and the effect of preventing scale accumulation on the heater is lost. The above-mentioned polyether-modified silicone forms a slippery pleural film on the base oil etc. that has fallen onto the heater, preventing the base oil etc. from being heated and oxidized, as well as preventing the accumulation of inorganic substances and preventing fuzzing. do. It has been pointed out that conventionally known silicone-based antifouling agents generally have poor scouring properties and are prone to stain staining, but the polyether-modified silicone mentioned above has water solubility through the addition of ethylene oxide. It exhibits excellent scouring properties and is extremely unlikely to cause staining spots.

The proportion of each of the above components in the spinning oil according to the present invention is:
90% by weight or more of polyether, preferably 92% by weight
-98% by weight, the antistatic agent (1) is 5% by weight or less, more preferably 4-1% by weight, and the antifouling agent O is 5% by weight or less, more preferably 4-1% by weight. However, if the polyether has a weight of less than 90 times firf, the lubricating effect of the yarn is insufficient and the occurrence of wrinkles, fuzz, yarn breakage, etc. increases. Furthermore, the antistatic agent and antifouling agent should be kept to the minimum level that can fulfill their functions, and the blending ratio of the antistatic agent and antifouling agent in the present invention was determined experimentally from this point of view. It is characterized by a much smaller blending ratio of antistatic agents and antifouling agents than conventionally known spinning oils for false twisting.

The polyether used in the present invention is self-soluble and has extremely good compatibility with the antistatic agent (2) and the antifouling agent (O), so it has traditionally been essential for this type of oil agent. The emulsifier used in the present invention can be positively omitted, which is a significant feature of the present invention. That is, as mentioned above, the emulsifier is a component that easily turns into tar, and even if it were possible to prevent the tar formation caused by the base oil, there is a risk that the problem of tar formation would occur due to the emulsifier itself. Since the emulsifier can be omitted, the problem of tarring can be more reliably prevented.

In actual use, the spinning oil of the present invention is preferably used as a water-based oil by dissolving or dispersing it in water to an appropriate concentration according to a conventional method, but it is also possible to use it as a straight oil. .

The present invention is configured as described above, but the key point is to use a specific polyether as the base oil, specify the type of electrophoretic agent and antifouling agent to be used together, and actively eliminate the use of emulsifiers. It has good stability, oil stability and heat resistance, does not easily turn into tar, and can drastically reduce contamination of the heater.
The lubricity is also extremely good, with little fluffing of the processed yarn, which improves the quality of the false twisted processed yarn and significantly improves the operating rate of the loom.

Next, an experimental example will be shown. In the following, PO means tetrapyrene oxide, and EO means ethylene oxide.

Experimental example The cleaning cycle of the false-twisting heater, the fluffing of processed yarn, and the WJL (water jet loom) operating rate when the spinning machine and false-twisting conditions were set as shown below, and the type of spinning oil was varied. compared.

The results are summarized in Part 2.

[Spinning conditions]

Yarn raw resin: polyethylene tele 7 tallate semidal,
Intrinsic viscosity 0.635 Spinning speed: 3440 m/gin Yarn formation: 115 denier/36 filament Spinning oil coating amount: 0.37% (% by weight of filament) [Stretching and simultaneous false twisting conditions] False twisting machine: 5DS -8 (manufactured by Teijin Seiki) False twisting yarn speed: 5
66m/m Heater temperature = 205℃ [Spinning oil ■] ・ Polyether ■ Antistatic agent ■ [Dodesuccinic acid di-salt] 2 [Antifouling agent 0]
[Modified silicone (*4)] 1 #Ethylene glycol 2I Osaka'J = 70/30 (mol%), total molecule kr of added propylene oxide and ethylene oxide = 50
00, *2: C4He01:(CsImu0)p(C
, II, 0) IriH, p/l=50150 (mol q6
), total molecular weight of added propylene oxide and ethylene oxide = 2300 *3: C14111H2n
-)10((CsHeO)p(CJIaOM)H.

D/l = 60/40, total molecular weight of added propylene oxide to ethylene oxide = 1500X =
20, y=20, n/in=50150 (Soluchi)
, total molecular weight of added propylene oxide and ethylene oxide = 7500 Viscosity (at 30°C) 1450 cps [Spinning oil ■] Fatty acid ester of polyether (*5) 301 Antistatic agent ■ Ethylene glycol 2% by weight *1. *2. *3: Same as before *5: Nuri # (EO) 4 deca/x ): QtH2
s(CxHio)*0COCs+Ht.

*6: Lauryl (EO) 2 (PO) (l phosphate I (*7: Na cetyl sulfonate [Spinning oil agent 111] Polyether electrolytic agent ■ Emulsifier *, r: p7i was replaced with 75/25 Others are above *1
．． Same as *2゛: Same as above *2 except that the total molecular weight of added propylene oxide and ethylene oxide is 1700 [Spinning oil ■] Polyether 5200-B-87/13 (*3') 36 Weight 23
00-R-50150 (!8!2) 63 #Antistatic agent ■ *3': Same as above *3 except that the total molecular weight of propylene oxide and ethylene oxide added with p/l of 87/1 is 5200. [Spinning oil agent V] Antifouling agent shown in the spinning oil stamp
A spinning oil having the same composition as spinning oil (1), except that 1% by weight of EO-modified dimethylpolysiloxane (total molecular weight 6000) modified with only EO was used instead of [xane].

[Spinning oil ■]

Instead of the antistatic agent ■ [dodecenyl succinic acid di-salt] shown in spinning oil CI), lauryl (warp.

A spinning oil having the same composition as the spinning oil [l] except that (PO)6 phosphate was used twice.

Claims (1)

[Scope of Claims] ■ A random or random copolymer obtained by adding propylene oxide and ethylene oxide to a sulfur alcohol having at least one human tetraxyl group in the molecule, the addition of both 1 ffl of a polyether in which the molar ratio of propylene oxide is 40% or more and less than 100%, and the sum of the molecular weights of propylene oxide and ethylene oxide to be added is 1000 to 8000.
or 2 or more types: 90% by weight or more, ■ Antistatic agent consisting of dialkali metal salt of higher dibasic acid: 5
weight - below, and (1) a polyether-modified silicone in which propylene oxide and ethylene oxide are added in a random or block form to a polymer of dimethylsiloxane, the molecular weight of which is 5,000 to 20,000 and the propylene oxide added thereto. and the addition ratio of ethylene oxide is 40% or more of propylene oxide in molar ratio and less than 100%, and the ratio of the added propylene oxide and ethylene oxide to the modified silicone is 50%.
A spinning oil for false twisting, characterized in that it contains an antifouling agent of modified silicone weighing 90% by weight or less, and is substantially free of emulsifiers.