JPH04500543A - Polyurethane-containing spin finish - 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] Polyurethane-containing spin finish The present invention provides a polyurethane-containing spinning finishing agent for improving yarn strength in melt spinning of synthetic fibers. Good method and use of polyurethane as yarn agglomeration promoter in spinning finishes. It is related to

In the melt spinning of synthetic fibers and the subsequent production of textile products or industrial yarns, The multifilament yarn is wound onto a bobbin without being heated. individual filaments The individual filaments are treated with a more or less enhanced adhesion effect of the spinning finish. Only in this way does it become an integrated parallel thread bundle. In addition, the yarn is processed in the subsequent take-up process. Protective heating is usually provided at several revolutions per meter. However, this protective heating , unsuitable for many subsequent processing steps. Therefore, in the case of multiple In this step, heat is applied to the filament. However, the process of applying this heating is This is a costly additional process. Therefore, to reduce heating costs, airflow Therefore, there is a method of mixing the yarn bundles and, if necessary, heating the yarn bundles. However, this The blending method is also not only expensive but also difficult to control. Furthermore, the thread The degree of mixing is reduced when guided under tension over the thread guide. the As a result, there is a problem in that knots occur and the appearance of the fabric is impaired (US Pat. No. 4,632). , No. 874).

Another solution to the cost problem is the use of yarn agglomeration promoters in the spin finish.

For example, German Patent Application No. 3402155 discloses that epoxy is used as a thread aggregation promoter. Sialkyl compounds are proposed. However, when such spinning finishing agents are used in yarn bundles, In this case, there is a problem in that heat treatment must be performed afterwards. Furthermore, epoxy Lukyl compounds promote permanent cohesion of yarns and affect the final textile product. but, Spin finishes often leave no residue on the fiber and are easily removed by washing. (Hemiefazern/Chixtail Indus) Tory (Chemiefasern/Textil-I industry) , 1977, p. 328).

U.S. Pat. No. 3,505,220 discloses that mineral oil, polyester having an average molecular weight of 150 to 750 Butene, alkyl groups having 13 to 19 carbon atoms or alkenyl groups or alkenylic acid phosphates, and oxidized vegetable oils. Suggests a top-up agent. However, due to the high viscosity of this finishing agent, practical application is difficult. The problem is that it is difficult.

The problem to be solved by the present invention is to provide very good adhesion between the groups constituting the yarn bundle. What's more, we have developed a spinning finishing agent that does not require mixing or heating the yarn. and provide it. Additionally, the spin finish requires no heat treatment and is easy to apply. Must be something Surprisingly, the above-mentioned severe challenges can be overcome with polyurethane-based spin finishes. It was found that the problem could be solved.

That is, the present invention provides smoothing agents, emulsifiers, wetting agents, yarn finishing agents and/or antistatic agents. 1 to 40% by weight based on total active materials. This invention relates to a spinning finishing agent characterized by containing urethane.

The present invention also provides that the yarn bundle after melt spinning has a weight of 0°3 to 2.0% based on the weight of the yarn bundle. Synthetic fibers characterized by the application of % polyurethane-containing spin finish active substances This invention relates to a method for improving yarn cohesion in melt spinning.

The invention further provides based on total active substances as agglomeration promoters in spin finishes. Regarding the use of 1 to 40% by weight of polyurethane.

The polyurethane used in the present invention can be prepared by conventional methods (e.g. Ullmann Industrial Co., Ltd.). Chemical Encyclopedia (Ullmanns Encyclopadie derteah) Nischen Chemie), vol. 19, p. 302 onwards, Verlag He. (see Verlag Chemie, 1980). Ru. For example, polyisocyanates can be prepared in the presence of a solvent (optionally in the presence of a catalyst). ) with a polyol and a hydroxycarboxylic acid at a temperature of 60°C to 120°C. React for 1 to 6 hours to form a prepolymer. Based on the polyol component, The OH:NCO equivalent ratio is in the range 4 to 131, preferably 0.5 to 0.7. blend Heat for 1 to 3 hours (with reflux if necessary), then cool to 18°C to 30°C. The mixture is then neutralized with a tertiary alkylamine dissolved in an organic solvent. Then, A mass of polyurethane is dispersed in water, and 0 to 0.7 equivalents of React with monoamine and/or diamine aqueous solution. By distilling off the solvent As a result, an anionic polyurethane dispersion having no free NGO functionality is obtained. Applicable The polyurethane content in the dispersion is 10-60% by weight, preferably 25-40% by weight. It is.

Suitable polyisocyanates include aliphatic or aromatic polyisocyanates known in the art of polyurethane chemistry. Aromatic, cyclic or acyclic polyisocyanates.

For example, 4°, 4”, 4”-triisocyanatotriphenylmethane, 2°4.4 '-) Prefecture isocyanatodiphenyl ether, tris-(4-isocyanatodiphenyl ether )-thiophosphneeto, toluene-2,4-diisocyanate and/or Toluene-2,6-diisocyanate, diphenylmethane diisocyanate, 1 ．． 5 = + capped non-diisocyanate, 1,4-phenylene diisocyanate, Dicyclohexylmethane-4,4'-diisocyanate, 1,6-hexanediyl isocyanate and/or 3-isocyanatomethyl-3,5,5-trimethyl Cyclohexyl isocyanate (isophorone diisocyanate). aliphatic Preferably, synchrohexylmethane-4,4 isocyanate is used. '-diisocyanate and/or isophorone diisocyanate are particularly preferred. stomach.

For example, glycerol, trimethylolpropane, polyether and polyester Terpolyol is a polyol component having at least two alcoholic hydroxyl groups. used in the preparation of the prepolymer. alkylene oxide, preferably ethylene oxide and/or propylene oxide as a polyfunctional starting molecule. The polyether polyol obtained by addition is important. used Examples of starting molecules include ethylene glycol, 1,2-propylene glyco trimethylolpropane, trimethylolethane, glycerol, penta There is erythritol, sorbitol, sugar or ethylenediamine. polyester polyol is a combination of di- or tri-functional polyol and dicarboxylic acid or its or by polycondensation with anhydride or caprolactone or pinocrolactone prepared by ring-opening polymerization in the presence of low molecular weight starting diols.

Suitable di- or tri-functional polyols include ethylene glycol, 1,2-propanol, pandiol, 1.4-buta〉diol, 1.6-hexanediol, neobe, Methyl glycol, diethylene glycol, glycerol, trimethylolpro bread and/or hexanetriol. A suitable dicarboxylic acid or its Examples of anhydrides are nicosuccinic acid, adivinic acid, phthalic anhydride, hexahydrophthalic anhydride. acid, maleic acid, or isophthalic acid. The polyol component is preferably Polyester polyol with an average molecular weight of 500 to 5000, more preferably an average molecular weight A polycaprolactone having a molecular weight of 500 to 3000, the polycaprolactone , e.g. low molecular weight such as ethylene glycol or 1,4-butanediol It is prepared by ring-opening polymerization of caprolactone in the presence of a diol starting molecule. Po Ricaprolactone is commercially available, for example from Interox Chemicals ( Product name: rcAPA from Iterox Chemicals Ltd. It is commercially available as J.

Suitable polyhydroxycarboxylic acids include, for example, dihydroxypropionic acid, dimethyl Tyrolpropionic acid, dihydroxyconohydric acid and/or dihydroquine It is zoic acid. 2,2-dimethylolpropionic acid is particularly preferred.

Suitable solvents are in particular methyl ethyl ketone, ethyl glycol acetate, N- Methylpyrrolidone, triacetin and/or diethylene glycol diacete It is the default.

The reaction of polyisocyanate with polyol and polyhydroxycarboxylic acid is For example, 1,4-diaza-(2,2,2)-bicyclooctane and/or It may also be carried out in the presence of a catalyst such as butyl dilauryl stanate. The catalyst is raw from 0.001 to 0.1% by weight, based on the total active substance content of the polyurethane used in

The prepolymer is neutralized with a tertiary alkylamine dissolved in the above solvent. No. Examples of tertiary alkylamines are triethylamine, dimethylethanolamine, and triethylamine. Reethanolamine, dimethylisopropanolamine, dimethylamino-3- Propaturamine, diethylethanolamine, triisopropaturamine and ,/or methyldiisopropanolamine, etc. Suitable chain extenders include di- Amines, especially diamines in aqueous form. The diamine is, for example, ethylene. diamine, hexamethylene diamine and/or piperazine. Also , preferred chain terminators are monoamines, especially monoamines in aqueous solution form. Applicable Monoamines include, for example, monoethanolamine and/or morpholine. Ru.

By mixing the polyurethane dispersion at a temperature of 18 to 25°C, a leveling agent, Emulsifiers, wetting agents, antistatic agents and/or other additives present as required The spin finish is dispersed in the aqueous emulsion containing the spin finish. The resulting polyurethane-containing spun finish The top emulsion contains 3-40% by weight of total active substance. The polyurethane content of the emulsion The amount is from 1 to 40% by weight, based on the total active substance content. Emulsion contains all active substances Based on the content, it contains the following ingredients: 35-95% by weight of leveling agent; 0-50% by weight emulsifiers, antistatic agents and/or wetting agents, 1-40% by weight polyurethane, 0-10% by weight of additives, e.g. pH regulators, disinfectants and/or corrosion inhibitors agent, Preferably, 35-95% by weight smoothing agent 0-50% by weight of emulsifiers, antistatic agents and/or wetting agents, 5-20% by weight of polyurethane, 0-10% by weight of additives.

Smoothing agents present in the spin finish emulsion of the present invention include, for example, mineral oil and fatty acid moieties. Fatty acids containing 8 to 22 carbon atoms and 1 to 22 carbon atoms in the alcohol moiety Esters, such as valmitic acid methyl ester, isobutyl stearate and and/or tallow fatty acid 2-ethylhexyl ester, dimethylpolysiloxane, etc. silicone and/or ethylene oxy with an average molecular weight of 600 to 6000 and polyalkylene glycols such as hydrogen/propylene oxide copolymers.

Suitable emulsifiers, wetting agents and/or antistatic agents include anionic, cationic and / or nonionic surfactants (e.g. hemyfazern/chixtail) Industry (Chemiefasern/Textil-1industri) e), 1977, p. 335), specifically monoglycerides and/or or diglycerides, such as glycerol monooleate and/or glycerol. Lormooleate, alkoxylated, preferably ethoxylated and/or Propoxylated fats, oils, C-4 fatty alcohols, and/or C11 -11 alkylphenols, such as hydrogen containing 25 moles of ethylene oxide Mustard oil and/or 8 moles propylene oxide + 6 moles ethylene oxide CIl! -18 fatty alcohols, optionally alkoxylated C m-24 fatty acid mono- and/or jetanolamines, e.g. oleic acid mono- and/or jetanolamide, tallow fatty acid mono- and/or gel Coconut fat containing tanolamide and/or 4 moles of ethylene oxide Fatty acid monoethanolamide, alkoxylated, preferably ethoxylated and/or or propoxylated and optionally terminated C-22 alkyl alkyl Alkali and/or ammonium salts of colesulfonates, e.g. alcohol, 20 moles of ethylene oxide butanol sodium sulfonate , Ca-22 alkyl alcohol which may be alkoxylated and phosphorus pentoxide or is the reaction product with phosphorus oxychloride, e.g. ethylhexanol, 2 moles of ethylene potassium oxide P2O5 ester, Ca-24 alkyl sulfosuccinate salts, alkali and/or ammonium salts, e.g. sodium dioctyl sulfosunnate, and/or amine oxides such as dimethyl dodecyl Ruamine oxide. The spin finish may optionally contain a pH adjuster, e.g. , C1-4 carboxylic acids such as acetic acid and/or glycolic acid and/or C8-, hydroxycarboxylic acids, alkali hydroxides such as potassium hydroxide, and and/or amines such as triethanolamine, fungicides and/or corrosion inhibitors. Contains an inhibitor.

The polyurethane-containing spinning finish emulsion is prepared by spinning filaments using a known method. It is applied after the lead is issued. Apply the finishing agent at a temperature of 18 to 30°C using an applicator. or by a metered-dose pump via a suitable applicator. Ru. The spin finish emulsion has an active substance content of 3 to 20% by weight, optionally with water. diluted to

The amount of active substance applied by the spin finish emulsion is approximately based on the weight of the yarn bundle. It is 0.3 to 2.0% by weight. After being treated with finishing agent, the yarn bundle is wound onto a bobbin. It will be done. Surprisingly, yarn bundles treated with the spin finish of the present invention have improved cohesion. This has the effect of reducing the coefficient of dynamic friction between the thread and the solid.

The yarn bundle may be made of polyamide, polyester, or polyolefin. 0.015 mol of CAPA210 (manufactured by Interox Chemicals, average content molecular weight 1,000, OH number 112) and 0.01 mol of dimethylolpropionic acid. was dissolved in 10.06 g of methyl ethyl ketone in a stirred reactor without stirring. The mixture was heated to 60°C. After homogeneity, 0.0321 mol of isophoronedi The socyanate was added and the mixture was heated to 85-90°C for 2 hours. NC0 value is one After reaching a constant temperature, the mixture was stirred for an additional 30 minutes. Cool the mixture to 25-30°C After that, 0.019 mol of trimethylamine was added to 6,567 g of methyl ethyl ketone. was added to neutralize the solution. After about 15 minutes, disperse polyurethane in 50g of water. Then, a solution of 0.07 mol of ethylenediamine dissolved in 8.3 g of water was added. I got it. Methyl ethyl ketone was distilled off under reduced pressure at 35-40°C, containing the active substance. An aqueous polyurethane dispersion having an amount of 30% by weight was obtained.

Application example A spin finish having the following composition was used.

Spinning finishing agent A Tallow fatty acid 2-ethylhexyl ester; 61% by weight rapeseed oil/trioleinth 6% by weight Sodium dioctylsulfosuccinate = 6% by weight alcohol, 20 moles of ethylene oxide butanol sodium sulfone g = 10% by weight Oleic acid jetanolamide: 4% by weight Oleic acid mono/diglyceride: 7 parts Amount% Olein: 5% by weight 45% by weight KOH: 1% by weight Spinning finishing agent B Tallow fatty acid 2-ethylhexyl ester: 70% by weight sodium dioctyl sulfate Phosuccinate: 3% by weight ethylhexanol, 2 moles of ethylene oxide Pt Os ester, potassium salt = 2% by weight Dimethyldodecylamine oxide: 18% CI @ -1m fatty alcohol x 8 moles of propylene oxide x 6 moles of ethylene oxide: 4% by weight Oshi 4212% by weight Triethanolamine: 1% by weight Spinning finishing agent C Mineral oil, viscosity (25°C) = 6 m2/s = 20% by weight poly α-olefin, viscosity ( 40°C) = 5.1 m”/sec: 30% by weight vol α-olefin, viscosity (40°C) ;16.9m! /sec: 20wt 1% sodium dioctyl sulfosuccinate: 3 wt% ethylhexanol, 2 moles of ethylene oxide PtOs ester, potassium Um salt; 2% by weight Dimethyldodecylamine oxide = 18 violet amount% C + S- + a fatty alcohol x 8 moles of propylene oxide x 6 moles of ethylene oxide = 4% by weight Oshi 4212% by weight Triethanolamine = 1% by weight Add 9 parts by weight (pbw) of spinning finishing agent A emulsified in water to polyurethane at 20°C. Dispersion ■ 3.3 parts by weight (finishing agent Al) or 6.6 parts by weight (finishing agent A2) Mixed. In addition, 89 parts by weight of the spinning finishing agent emulsified in water was added to the polyester at 20°C. 13.3 parts by weight of urethane dispersion (finishing agent B1) or 6.6 parts by weight (finishing agent B2) ) mixed with.

Ta. Furthermore, 09 parts by weight of a spinning finishing agent emulsified in water was added to a polyurethane resin at 20°C. (Finish CI).

The total amount of active material in the spin finish emulsion was 7.5% by weight.

A polyurethane-containing spin finish emulsion at 0°C was applied by a metered posi. (Oil application amount: 0.8% by weight, emulsion concentration near, 5% by weight active substance 7.5%).

In the evaluation of the spinning test, the following parameters were taken: at a speed of 300 m/min; Coefficient of friction against steel [Rothschild F-Mae] (atmosphere: 20°C 7/65% relative humidity)] Electrostatic charge on steel at a speed of 300 m/min [measured with a Rothschild F-meter (atmosphere air: 20°C/relative humidity 65%)], shore life [measured with a Rothschild electrostatic voltmeter (atmosphere: 20°C/relative humidity 65%)], Surrounding atmosphere: 20℃/relative humidity 65%) Thread cohesiveness [textil-un d Faserinstitut), Denkendorf (Denkendorf) ) Measured using the developed measuring device (atmosphere = 20℃/relative humidity 65%).

The test results are shown in Table 1.

Table 1 Finishing agent Yarn cohesiveness l) Friction coefficient Electric field strength Half-life (seconds) (V/m) Test direct After 3 weeks later A 14.3 0.58 -0.1/-0,1" 8 19Al 10.5 0 ．． 56 0/1 16 33A2 4.4 0.53 0/2.5 44 67 B X5.3 0.58 -6/-81119B1. i3.4 0゜55 - 6/-71924B2 6.3 0.52 12/15 39 42C16, 10,57-12/-131116CI 5.4 0.53 -20/-202 2821) Regarding yarn cohesiveness, the lower the value, the better.

2) Range of variation (from/to).

international search report international search report EP 8901014 SA　30792 international search report εP　8901014 SA　30792

Claims (1)

[Claims] 1. Contains leveling agents, emulsifiers, thread aggregation promoters, wetting agents and/or antistatic agents. A spin finish consisting of 1 to 40% by weight of polyurethane, based on total actives. A spinning finishing agent characterized by containing. 2. Characterized by containing 5-20% by weight of polyurethane based on total active substances A spinning finishing agent according to claim 1. 3. When polyurethane is used as polyisocyanate, aliphatic diisocyanate, preferably Preferably dicyclohexylmethane-4,4'-diisocyanate and/or Claims 1 and 2, characterized in that they contain isophorone diisocyanate. and one or both of paragraphs 2 and 3. 4. Polyurethane is a polyol component with an average molecular weight of 500 to 5000. Ester polyol, preferably polycaprolac with an average molecular weight of 500 to 3000 According to one or more of claims 1 to 3, characterized in that the Spin finish as described. 5. Spin finish active according to one or more of claims 1 to 4. The quality of the yarn bundle as filaments leaving the spinneret is from 0.3 to 0.3 based on the weight of the yarn bundle. of yarn in melt spinning of synthetic fibers characterized in that it is applied in an amount of 2.0% by weight. How to improve cohesion. 6. Yarn aggregation in a spin finish in an amount of 1 to 40% by weight based on total active substances Use of polyurethane as an accelerator.