JPH0359172A - Aqueous emulsion-type lubricant for spinning - Google Patents

Abstract

PURPOSE:To obtain the subject lubricant for synthetic fiber effective in suppressing the scattering of lubricant from fiber yarn traveling at a high speed and giving a smooth and effective working environment by adding a copolymer of acrylamide and a specific monomer. CONSTITUTION:The objective aqueous emulsion-type lubricant for spinning can be produced by adding (A) a copolymer having a molecular weight of 50,000-20,000,000 and composed of acrylamide and a monomer selected from a carboxyl-containing monomer such as monoethylenic unsaturated carboxylic acid [e.g. (meth)acrylic acid], a monomer having carboxylic acid alkyl ester group such as (meth)acrylic acid ester of a natural or synthetic alcohol and an aliphatic hydrocarbon monomer (e.g. butene or isobutylene) to (B) an aqueous emulsion of a base oil containing a smoothing component such as mineral oil. The scattering of the lubricant in high-speed production process can be suppressed and the deterioration of the working environment can be prevented by applying the present lubricant to a synthetic fiber.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aqueous emulsion type spinning oil. More specifically, in the spinning process of synthetic fibers, water-based emulsion type spinning is suitable for applying oil safely and efficiently in a good working environment with less scattering of oil when lubricating fibers running at high speed. Regarding oil agents.

[Prior Art] In recent years, yarn running speed has been significantly increased in textile manufacturing processes for the purpose of high productivity and rationalization. In particular, in the spinning process of synthetic fibers such as polyester and nylon, the conventional
The winding speed was 1,500 m/min, but the speed has been increased to 3,500 to 7,000 m/min, although there are differences in the process.

By the way, in order to run the spinning process smoothly and improve the quality of the yarn, the spinning oil is applied using the roller touch method,
Lubrication is performed using methods such as nozzle lubrication. This spinning oil agent imparts properties such as smoothness and antistatic properties to the fiber yarn, but as the spinning process becomes faster as mentioned above, oil scattering from oil supply rollers and nozzle guides immediately after spinning increases. , oil scattering that did not previously pose a problem, such as oil scattering on the interlacer that focuses the yarn and oil scattering on the traverse guide just before winding, has increased significantly, which not only worsens the working environment but also poses a threat to worker safety and safety. This has also become a big problem from an economic standpoint.

For this reason, each fiber manufacturer has been able to obtain the desired performance when lubricating fiber threads during high-speed running, and with less oil scattering.
There is a strong need for the development of oil agents with less oil loss.

Conventionally, in order to prevent oil scattering in spinning oils, attempts have been made to add silicone or fluorine-based activators to water-based emulsion-type spinning oils to lower the surface tension and improve affinity for fibers, thereby preventing oil scattering. There is.

[Problems to be Solved by the Invention] However, the above-mentioned oil agent is insufficient in preventing oil from scattering from the fiber threads under high speed running.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present inventors have conducted intensive studies to obtain a spinning oil agent that exhibits oil scattering properties against fiber yarns during high-speed running, and have developed the present invention. reached.

That is, the present invention provides an aqueous Emacashi Nisso-type spinning oil characterized by adding polyacrylamide (with a molecular weight of 50,000 to 20,000,000), and acrylamide, a carboxyl group-containing monomer, and a carboxylic acid alkyl ester group. An aqueous emulsion-type spinning oil characterized by adding a copolymer of a monomer selected from the group consisting of monomers and aliphatic hydrocarbon monomers (with a molecular weight of 50,000 to 20,000,000). , is.

Among the monomers forming the copolymer in the present invention, carboxyl group-containing monomers include monoethylenically unsaturated mono- or polycarboxylic acids and their anhydrides or salts, such as (meth)acrylic acid, crotonic acid, maleic acid, etc. Acids include itaconic acid, fumaric acid, maleic anhydride, and their salts (alkali metal salts, ammonium salts, etc.).

Examples of the carboxylic acid alkyl ester group-containing monomer include (meth)acrylates derived from linear or branched natural or synthetic alcohols having 1 to 2B carbon atoms, such as methyl (meth)acrylate, ethyl (meth)acrylate,
Octyl (meth)acrylate, 2-ethylhexyl (
Examples include meth)acrylate, decyl(meth)acrylate, lauryl(meth)acrylate, myristyl(meth)acrylate, stearyl(meth)acrylate, and mixtures of two or more thereof.

Examples of aliphatic hydrocarbon monomers include those having 2 to 20 carbon atoms, such as ethylene, propylene, butene, isobutylene, pentene, diisobutylene, and off.

Examples include thene, dodecene, octadecene, and isoprene. Preferred among these are butene and isobutylene.

In addition to the above monomers, other monomers such as hydroxyl group-containing monomers and sulfonic acid group-containing monomers can be used in combination, if necessary.

Hydroxyl group-containing monomers include monoethylenically unsaturated alcohols, such as aryl alcohols; ethers of monoethylenically unsaturated anobutyl alcohols and polyols, or polyol esters of monoethylenically unsaturated carboxylic acids, such as poly(oxyethylene, oxypropylene) glycol monoaryl ether and hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylate, triethylene glycol (meth)
Acrylates can be mentioned.

Sulfonic acid group-containing monomers include aliphatic or aromatic vinylsulfonic acids, such as vinylsulfonic acid and vinyltoluenesulfonic acid; (meth)acrylicsulfonic acids, such as sulfopropyl (meth)acrylate.

The combination of these monomers can be selected arbitrarily, but particularly preferred is acrylamide alone or a combination with a monoethylenically unsaturated carboxylic acid (salt).

In the (co)polymer (referring to polyacrylamide and/or the above-mentioned copolymer. The same description will be used hereinafter), the amount of each monomer is as follows based on the ffi amount of all monomers. .

The amount of acrylamide is usually 50-100%, preferably 70-100%.

The amount of the carboxyl group-containing monomer is usually 0N50%, preferably 0 to 30%.

The amount of the carboxylic acid alkyl ester group-containing monomer is usually θ to 30%, preferably 0 to 20%.

The amount of aliphatic hydrocarbon monomer is usually 0 to 30%, preferably 0#20%.

The amount of other monomers is usually 50% based on the weight of total monomers.
It is preferably 30% or less. If the weight of other monomers exceeds 50%, oil scattering prevention properties will deteriorate.

The molecular weight of the (co)polymer is 50,000 to 20 million, preferably 200,000 to 15 million. If the molecular weight is less than 50,000, the ability to prevent oil from scattering from the fiber yarn during high-speed running is insufficient, and if it exceeds 20,000,000, the emulsion viscosity increases, the uniform adhesion of the oil agent deteriorates, and fluff increases.

Specific examples of (co)polymers include polyacrylamide (
M W Goo million), polyacrylamide (MW200
10,000), Acrylamide (95) - Sodium acrylate (5)
Copolymer (MW 10 million), acrylamide (7
0)-Na(30) acrylate copolymer (M W 15
0,000,000). Here, the numbers in parentheses represent weight % based on the weight of all monomers. Same below.

The (co)polymer is usually water-soluble or water-emulsifiable.

Pertaining to the present invention! Coalescence contains mineral oil, natural oil, synthetic ester oil, etc. as a smoothing agent component, and further contains additives such as emulsifiers, various surfactants as antistatic agents, and antioxidants and rust preventives as necessary. It is added to an aqueous emulsion of base oil to be used as the oil agent of the present invention.

As a smoothing agent, mineral oil (refined spindle oil, liquid paraffin, etc.), natural oil (coconut oil, castor oil, etc.), or synthetic ester oil [isostearyl laurate, butyl stearate, 2-ethylhexyl palmitate, lauryl alcohol] Ethylene oxide (hereinafter, ethylene oxide is abbreviated as EO) 2-mole adduct laurate, bisphenol propylene oxide (hereinafter, propylene oxide is abbreviated as PO) 2-mole E02-mole adduct ester of saturated fatty acids such as dilaurate) and polyether c carbon EO1PO adducts of monohydric alcohols of number t-8; e.g. EO/PO random adducts of butanol (molecular ffi: 1400), EO and PO of polyhydric alcohols
Examples include a copolymer of (molecular ffi: 2000).

Components of emulsifiers and antistatic agents include nonionic surfactants (polyoxyalkylene alkyl ether, polyoxyalkylene alkyl allyl ether, anionic surfactants (alkyl sulfate, fatty acid soap, alkyl phosphate ester (salt)) , alkyl sulfonate (salt)
etc.) etc.

Furthermore, additives such as antioxidants, preservatives, metal N wear inhibitors, and silicone and fluorine-based activators to improve wetting properties are added as necessary.

There are no restrictions on the blending amount of each component as long as it does not impede the effects of the present invention, and it is arbitrary depending on the purpose of the oil agent.

The concentration (solid content) of the emulsion in the base oil is usually 5#25%. Emulsions are made by conventional methods.

In the aqueous emulsion type spinning oil of the present invention, (co-)
The amount of polymer added is usually 0 based on the weight of the base oil.
,01 to log, preferably 0.05 to 5%. If the amount of this (co)polymer added is less than 0.01%, the ability to prevent oil from scattering from the fiber threads during high-speed running will not be sufficient, and if it exceeds 10%, the emulsion viscosity will increase and the oil agent will be uniform. Adhesion becomes poor and fluff increases.

The spinning oil of the present invention can be applied to synthetic fibers such as polyamide fibers and polyester fibers. As for the fiber form, filament yarn is usually applied.

The amount of the spinning oil applied in the present invention varies depending on the type, shape, thickness, etc. of the fiber, but is usually 0.2 to 1.5% based on the weight of the fiber.
% (pure content), preferably 0.4 to 1%.

The spinning oil of the present invention can be used as a lubricant in the fiber manufacturing process.
Usually used in the spinning process. There is no particular limitation on the lubricating method, and any method such as a roller lubricating method, a nozzle lubricating method, a spray lubricating method, etc. may be used.

[Example] The present invention will be further explained with reference to Examples and Comparative Examples below.
The present invention is not limited to this. Details of the oil components used in Examples and Comparative Examples are as follows.

Polymer 1: Polyacrylamide (MW 4,000,000) Polymer 2: Polyacrylamide (MW 4,000,000) Polymer 3: Polyacrylamide (35) - Acrylic #Na
(5) (MW 1,000,000) Polymer 4: Polyacrylamide (70)-Na acrylate (30) (M
W15 million) Smoothing agent 1: Liquid paraffin (100 seconds)
Plain IF12: 2-ethylhexyl stearate Leveling agent 3: Bisphenol APO(2) EO(2) dilaurate (indicates dilauryl ester of bisphenol APO2 mol E02 mol adduct. The same description will be used hereinafter) Activator 1 Oleyl alcohol EO (3) adduct activator 2: Hydrogenated castor oil EO (20) adduct activator 3: Oleic acid jetanolamide activator 4: Alkyl sulfone) Na salt activator 5: Alkyl phosphate Na salt activator 6: Dioctylsulfosuccine) Na salt Additive 1: Polyether modified product of dimethylpolysiloxane [
:5H3771: )-Resilicone Co., Ltd. Examples 1 to 6 Comparative Examples 1 to 3 Table 1 shows the formulations (excluding water) of the oil of the present invention and comparative oil.

Table (continued) Water was added to the formulation in Table 1 to create a 10% aqueous emulsion. A d+ agent was obtained. The method for adding the polymer is to add 1 part of the polymer to an aqueous emulsion of base oil excluding the polymer.
% aqueous solution was added in a predetermined amount to obtain a 10% emulsion of each formulation to obtain an oil agent of the present invention. Using this oil agent and comparative ib agent, the undrawn polyethylene terephthalate yarn was oiled through a nozzle and spun at a take-up speed of 7000 m/+ain.
A filament of 5 de/36 f t + was obtained.

Oil adhesion ff1 (Vo) on the obtained filament
(Test 1), fiber-metal friction coefficient (Test 2), and fuzz (Test 3), as well as measuring the scattering of oil at a part of the interlacer and a traverse guide immediately after oiling (Test) 4) was visually observed. The results are shown in Table 2.

Table (continued) (1) Oil adhesion amount 00 (Test 1) Approximately 2 g of filament yarn after winding was sampled and ringed,
The adhering oil was extracted using a rapid residual fat extraction device manufactured by Tokai Keiki Co., Ltd. with ether 20×1.

(2) Fiber-metal friction coefficient (Test 2) Eiko measuring instrument (
KK)'! ! ! ! The filament yarn after winding was frictionally run on a metal pin (hard chrome matte finish) with a diameter of Somm at an initial tension (TI) of 20 g and a running speed of 300 m/ml using a running thread method friction testing device. The thread tension (T2) after rubbing was measured. The friction coefficient was calculated from the following formula.

Fiber-metal friction coefficient = [ln (Tl/T2)]
/θθ: Friction angle (3) Fuzz (Test 3) The presence or absence of fuzz on the end face of the cheese after winding was visually observed.

(4) Scattering state of oil (Test 4) When refueling, the scattering state of the oil was observed with the naked eye.

O: Hardly any oil scattering ×: Quite a lot of oil scattering From the results in Table 2, the oils of the present invention all have a small amount of oil scattering, and the fiber-to-metal friction coefficient is equivalent to that of the comparative oils. It can be seen that the performance is improved.

[Effects of the Invention] The spinning oil of the present invention suppresses scattering from the braided yarn especially during high-speed running, and does not cause problems such as loss of the oil or deterioration of the working environment.

Since it exhibits the above-mentioned effects, the oil agent of the present invention is particularly useful as an oil agent for high-speed spinning of synthetic fibers.

Claims (1)

[Claims] 1. Polyacrylamide (with a molecular weight of 50,000 to 2
An aqueous emulsion-type spinning oil agent characterized by adding 0,000,000 yen). 2. A copolymer of acrylamide and a monomer selected from the group consisting of a carboxyl group-containing monomer, a carboxylic acid alkyl ester group-containing monomer, and an aliphatic hydrocarbon monomer (with a molecular weight of 50,000 to 20 million ) is an aqueous emulsion type spinning oil agent. 3. The oil agent according to claim 2, wherein the carboxyl group-containing monomer is a monoethylenically unsaturated carboxylic acid. 4. The oil agent according to claim 2 or 3, wherein the carboxylic acid alkyl ester group-containing monomer is a (meth)acrylic ester or maleic ester of a linear or branched natural or synthetic alcohol.