JPH1018177A - Highly concentrated scouring agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition with a low viscosity even in case of being formulated with the active ingredient in high concentrations, excellent in scouring performance under highly alkaline conditions, and useful for unscoured gray fabrics comprising cotton and/or synthetic fibers, comprising an alkyl ether phosphoric ester-based surfactant, a nonionic surfactant and water. SOLUTION: This scouring agent composition comprises (A) an alkyl ether phosphoric ester-based surfactant, (B) a nonionic surfactant, and (C) 5-20wt.% of water, having a viscosity of about 50-150cP at normal temperatures and viscosity at 30 deg.C of pref. <=400cP. This composition is applied at 0.01-1wt.% in the active ingredient concentration according to the stain level of cloth(s) in such processes as desizing, scouring, bleaching and mercerization.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scouring agent composition for fibers, and more particularly to a method for desizing, scouring, bleaching or mercerizing unscrutinized greige machines such as cotton and synthetic fibers and their mixed fiber products. The present invention relates to a scouring agent composition containing a high concentration of an active ingredient and having a low viscosity.

[0002]

2. Description of the Related Art Weaving and knitting greige are desizing,
The scouring, bleaching or mercerizing process is a very important process in the fiber dyeing process to avoid physical damage such as unevenness of dyeing, abrasion and abrasion in the subsequent dyeing, finishing and sewing processes. is there.

[0003] desizing cotton, scouring, bleaching, in mercerized step, first desizing some cases carried out using a-amylase and nonionic surfactant However, persulfate [Na ₂ S
₂ O ₈ , (NH ₄ ) ₂ S ₂ O ₈ ], bromate (Na ₂ BrO ₂ ), hydrogen peroxide
(H ₂ O ₂ ) or the like is often used under alkaline conditions.

[0004] In addition, in the case of a new polyester synthetic fiber fabric, a large amount of paraffin wax, acrylic acid ester type, polyvinyl alcohol type, etc. sygins agent is used in the spinning step in order to protect the yarn from becoming thinner and finer. However, if they are not completely removed in the scouring process, it leads to smoke and uneven dyeing in the drying process. For this reason, the scouring process is very important.

In the case of a woven fabric, a machine used for desizing, scouring, bleaching, and mercerizing is almost continuously used as a mechanical device used to smoothly carry out this important scouring process.
J-Box type, L-Box type, Purple range type or Venteller type desizing, scouring and bleaching equipment are used, and clip mercerizing machine and chainless mercerizing machine are also widely used for mercerization. .

[0006] In the scouring step, a scouring agent for removing dirt from a woven or knitted fabric is usually used. Conventionally, such a scouring agent is mainly composed of a nonionic surfactant and an anionic surfactant. Agents and mixtures thereof. For example, nonionic surfactant-based scouring agents include nonylphenol, octylphenol, synthetic primary alcohols [Dovanol (manufactured by Mitsui Petrochemicals), neodol (manufactured by Shell)] and secondary alcohols [sophthalanol (manufactured by Nippon Shokubai Co., Ltd.) ), Tertitol (manufactured by Union Carbide) or natural higher alcohols (calcol (manufactured by Kao Corporation)), or propylene oxide or ethylene oxide adducts, or styrene oxide or benzylated phenol propylene oxide or ethylene oxide adducts Propylene oxide and ethylene oxide adducts of branched alcohols such as 2-ethylhexanol and isotridecyl alcohol have been proposed. Also, various compounds have been proposed as scouring agents based on anionic surfactants. Recent examples include U.S. Pat. No. 4,889,945 and U.S. Pat.
ndoz) alkyl or alkenyl polyether phosphate salts described in the specification. Furthermore,
Examples of anionic surfactant scouring agents include linear alkylbenzene sulfonates (LAS), alkyl sulfates, alkyl ether sulfates, alkyl naphthalene sulfonates, secondary alkane sulfonates, and carboxymethyl adducts of branched alcohol alkylene oxides. Compound salts and the like are also known. Above all, secondary alkane sulfonates and salts of carboxymethylated products of branched alcohol alkylene oxide adducts are excellent and have been preferably used as those having penetrating power and detergency under alkali. Further, JP-A-8-60532 discloses a scouring agent composition using a specific polyoxyalkylene type nonionic surfactant and an anionic surfactant in a specific ratio.

[0007]

Generally, the scouring agent is made into an aqueous solution containing the above-mentioned surfactant and optional components such as a preservative and an antifoaming agent.
(% By weight or less). However, in a normal product form, the active ingredient concentration (concentration of components other than water) is about 15 to 65% by weight, as seen in, for example, JP-A-6-34055 and JP-A-8-60532. From the viewpoint of distribution costs and the like, a form containing the active ingredient as high as possible is desirable.

On the other hand, today, the speed of the scouring process has been accelerated, and the alkalinity in the scouring process has also tended to increase, and it is required that the scouring effect under a high alkali is sufficient.

[0009] Of the conventional surfactants, it is extremely difficult to increase the concentration of anionic surfactants. In addition, since the nonionic surfactant is usually in a liquid form (solvent system), it is possible to increase the concentration to some extent. However, nonionic surfactants have poor compatibility with high alkalis, and the scouring effect under high alkalis performed today is not sufficient. That is, a scouring agent composition having a high concentration and exhibiting a sufficient scouring effect even under highly alkaline conditions has not been found yet.

[0010]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result of studying various surfactants, have found that alkyl ether phosphate ester surfactants and nonionic surfactants The use of an activator in combination has led to the finding that the liquidity has a low viscosity even when the active ingredient is mixed at a high concentration, and that the scouring performance under a high alkali is excellent, and the present invention has been completed.

That is, the present invention provides a high-concentration scouring agent composition containing 5 to 20% by weight of water, an alkyl ether phosphate ester-based surfactant, and a nonionic surfactant.

The present inventors have found that, among the surfactants, in particular, by using an alkyl ether phosphate ester-based surfactant and a nonionic surfactant in combination, it is possible to reduce the viscosity of a high-concentration system and improve the scouring performance. I found that both were satisfactory,
The present invention has been made.

The alkyl ether phosphate ester surfactant used in the present invention is obtained by phosphorylating the terminal of a polyoxyalkylene derivative such as a higher alcohol or an alkyl phenol. The surfactant activity can be changed by selecting the number of moles to be added. By blending this alkyl ether phosphate ester surfactant, the compatibility of the nonionic surfactant with alkali can be improved, and sufficient scouring performance can be exhibited. In the present invention, the “alkyl” of the “alkyl ether phosphate ester surfactant” includes not only an alkyl group but also an alkenyl group, an alkylaryl group, and an aralkyl group.

The most preferred alkyl ether phosphate ester surfactant in the present invention is a polyoxyalkylene alkyl ether phosphate represented by the following formula (I) and / or a salt thereof. R ₁ O (AO) _m H (I) (wherein, R ₁ is an alkyl group having 7 to 24 carbon atoms,
An alkenyl group of from 24 to 24, an alkylaryl group of from 7 to 19 carbon atoms or an aralkyl group of from 6 to 28 carbon atoms,
Is an oxyalkylene group having 2 to 3 carbon atoms, m is an average number of added moles of the oxyalkylene group, and represents a number of 2 to 5. This compound has an average addition mole number m in the general formula (I) of 2 to 5, and in the average addition mole number in this range, it is possible to achieve a low viscosity and to obtain the most in the scouring step under a high alkali. The effect is higher.

As the alkyl ether phosphate ester surfactant represented by the general formula (I), a salt type surfactant can be suitably used, and a salt partially or completely neutralized with a nitrogen-containing alkali is particularly preferable. . Here, the term "nitrogen-containing alkali" refers to an organic or inorganic compound containing a nitrogen atom in the molecule and showing alkalinity, for example, ethanolamine, a linear or cyclic alkylamine such as cyclohexylamine, morpholine, Examples include cyclic amines such as pyrrolidine, piperidine and pyridine, and aromatic amines such as aniline. More preferred nitrogen-containing amines include amines represented by the following general formula (III) and amines represented by the following general formula (IV).

[0016]

Embedded image

[Wherein R ₃ , R ₄ and R ₅ may be the same or different and each represents H, an alkyl group having 1 to 8 carbon atoms, a 3-ethoxypropyl group, a methoxypropyl group,
It represents a 2-hydroxyethyl group, a hydroxypropyl group or a cyclohexyl group. ]

[0018]

Embedded image

Wherein R ₆ represents an alkyl group having 1 to ₆ carbon atoms. In the present invention, the alkyl ether phosphate ester surfactant is blended in an amount of 2 to 40% by weight, preferably 4 to 30% by weight. If an alkyl ether phosphate ester-based surfactant is not added, the scouring performance of the nonionic surfactant under high alkali conditions cannot be sufficiently exhibited, and the scouring effect is significantly reduced.

Further, the scouring agent composition contains a nonionic surfactant. Conventionally, nonionic surfactants have been considered to be bases having relatively excellent scouring performance, and surfactants suitable for compounding at a high concentration from reaction methods and the like. Due to the poor compatibility with the above, sufficient effects could not be exerted in the scouring step under highly alkaline conditions, and even if the concentration was increased, the practicality was low. In the present invention, by using the above alkyl ether phosphate ester-based surfactant in combination, the compatibility of the nonionic surfactant with respect to alkali is improved, and even in the scouring treatment under high alkali, the original scouring performance can be sufficiently improved. Can demonstrate.

As the nonionic surfactant used in the present invention, polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, polyoxyalkylene distyrenated phenyl ether and the like are preferable. Particularly, a nonionic surfactant represented by the following general formula (II) is preferable as a nonionic surfactant to be blended in the scouring agent composition of the present invention because of its excellent scouring performance. R ₂ O (AO) _n H (II) wherein R ₂ is an alkyl group having 7 to 18 carbon atoms,
An alkenyl group having from 18 to 18 or an alkylaryl group having from 8 to 22 carbon atoms, AO is an oxyalkylene group having from 2 to 3 carbon atoms,
n is the average number of added moles of the oxyalkylene group,
The number 20 is shown. Examples of the nonionic surfactant represented by the general formula (II) include nonyl phenol, octyl phenol, synthetic primary alcohol [Dovanol (manufactured by Mitsui Petrochemical Co., Ltd.),
Addition of propylene oxide or ethylene oxide such as neodol (manufactured by Shell Co.)) or secondary alcohol (sophthanol (manufactured by Nippon Shokubai Co., Ltd.), talitol (manufactured by Union Carbide)) or natural higher alcohol (calcol (manufactured by Kao Corporation)) Propylene oxide and ethylene oxide adducts of styrenated phenol and benzylated phenol, and propylene oxide and ethylene oxide adducts of branched alcohols such as 2-ethylhexanol and isotridecyl alcohol. Other ester-based nonionic surfactants and the like can also be used.

In the present invention, the nonionic surfactant is
It is preferable to mix 50 to 90% by weight in the composition.

The scouring agent composition of the present invention contains water in an amount of 5 to 20% by weight, preferably 7 to 20% by weight, in order to mix the active ingredient at a high concentration and to ensure safety and achieve low viscosity. 1
Contains 5% by weight. When the water content is less than 5% by weight, the composition of the present invention becomes a flammable substance, is classified as a dangerous substance according to the Fire Service Law, and is subject to regulation. On the other hand, if the content of water exceeds 20% by weight, the viscosity of the composition increases, and the handling of the product in winter, in particular, becomes a problem.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION The scouring agent composition of the present invention comprises
It contains 20% by weight, an alkyl ether phosphate ester surfactant, and a nonionic surfactant as essential components. However, as long as the scouring effect under high alkalinity and the reduction in viscosity are not impaired, other components are also used. Surfactants, such as anionic surfactants, may be included. Examples of the anionic surfactant include an alkyl or alkenyl polyether phosphate salt and a linear alkyl benzene sulfonate (LA).
S), an alkyl sulfate, an alkyl ether sulfate salt, an alkyl naphthalene sulfonate, a secondary alkane sulfonate, and a salt of a carboxymethylated product of a branched alcohol alkylene oxide adduct.

The scouring agent composition of the present invention may further contain a glycol in an amount of 1 to 20% by weight, preferably 3 to 20% by weight, for further lowering the viscosity. Examples of glycols that can be used in the present invention include ethylene glycol monomethyl ether, diethylene glycol monoethyl ether, dipropylene glycol monomethyl ether, propylene glycol monopropyl ether, dipropylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, and diethylene glycol monoisopropyl. Ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, propylene glycol monobutyl ether, dipropylene glycol monoisobutyl ether, dipropylene glycol dimethyl ether, dipropylene glycol hexylene glycol, ethylene glycol monohexyl glycol ether, ethylene glycol Roh phenyl ether.

The scouring agent composition of the present invention has a
It shows a viscosity of about 50 cP (centipoise). Also, 3
It is preferable that the viscosity at 400C be 400 cP or less.

The scouring agent composition of the present invention can be used in the steps of desizing, scouring, bleaching, mercerizing and the like in an effective concentration of 0.01 to 1
It is used in accordance with the soil contained in the cloth so that the weight% is obtained.

Although the conventional scouring agent is distributed as an aqueous solution having a concentration of the active ingredient other than water of about 15 to 65% by weight, the present invention has a low viscosity even when the concentration of the active ingredient is further increased. , Can be made compact without impairing operability. In addition, the scouring agent composition of the present invention shows a sufficient scouring effect even under a high alkali.

[0029]

EXAMPLES Next, the present invention will be described in more detail by way of examples of the present invention, but the present invention is not limited to these examples.

Examples 1 to 5 and Comparative Examples 1 to 4 From the mixtures shown in Table 1, various scouring agent compositions (effective concentration 8
5 wt% aqueous solution), and the above-mentioned scouring agent composition is added to several concentrations of NaOH aqueous solution prepared in 1% increments so that each of the components has an effective content of 0.1 wt%.
After uniform mixing, the mixture was heated to 80 ° C. to determine the presence or absence of floc formation. The "floc-forming NaOH concentration" in Table 1 means that the scouring agent composition starts to form flocs.
H concentration. At a concentration lower than the floc formation concentration, no floc is formed, and practically no trouble occurs due to poor dissolution of the scouring agent composition. The evaluation of the refining property was performed as follows.

[Evaluation of refining ability] Cotton plain weaving machine (broad No. 40 single yarn, warp 120 yarns / inch, weft 60 yarns / inch)
Was subjected to desizing and scouring under the following conditions. <Conditions> Oxidizing desizing agent Na ₂ S ₂ O ₈ powder 5 g / l Caustic soda 48 ° Be 50 g / l Refining agent composition Effective amount 1 g / l 12 g of cloth is made into a hollow cylindrical shape, and a carpet machine 12 type (Nissen ( At a bath ratio of 1:20 and at 100 ° C.
Desizing was performed for 30 minutes, scouring was performed, and bubbling of the scouring residue and rewetting property of the scoured cloth were evaluated by the following methods. <Bubbling> Perform degreasing, scouring, washing, etc. at 95 to 100 ° C. Bubble the liquid surface around 80 ° C after washing and rinse at 60 ° C.
Was determined while stirring. H: Foaming on the entire liquid surface M: Foaming on half of the liquid surface L: Slight foaming on the liquid surface NF: No foaming 3cc dripping, the size of the spread is sufficiently large,
The evaluation was made based on a criterion that a material having no unevenness in the process was good. In Table 1, POE is polyoxyethylene, POP is polyoxypropylene, the attached number means the average number of moles added, () means block addition, and [] means random addition (see the following examples). The same applies to the examples and comparative examples).

[0032]

[Table 1]

Examples 6 to 10 and Comparative Examples 5 to 7 Various scouring agent compositions having the compositions shown in Table 2 were prepared, and the flash point was measured as a measure of the viscosity and flammability. The viscosity was measured at 3 ° C. using a B-type viscometer. The flash point was measured by the COC (Cleveland Open Cup) method. Table 2 shows the results. In Table 2, EO is ethylene oxide, PO is propylene oxide, and the attached numbers mean the average number of moles added.
Means block addition, and [] means random addition (the same applies to the following Examples and Comparative Examples). Further, the scourability was evaluated by the following method. Table 2 shows the results. [Evaluation of scouring property] <Residual rate> Non-sizing oil-fiber-attached polyester greige (different shrinkage mixed fiber) (residual rate of greige 2.34%) was scoured under the following conditions, and subjected to Soxhlet extraction using diethyl ether. The residual fat ratio of the greige machine after the scouring treatment was measured by the apparatus. <Conditions> Caustic soda 1.0 g / liter Refining agent composition Effective component 0.3 g / liter Refining time 20 minutes Refining temperature 110 ° C Bath ratio 1:15 <Foamability> Foamability was evaluated by the following method. . In a 1-liter graduated cylinder, add the test solution (0.3
g / l, caustic soda 1 g / l), 200 ml, and air was blown from the bottom of the graduated cylinder at 1.5 l / min by an air pump equipped with a ball filter. The height of foaming after 30 seconds and 2 minutes (Mm) was measured.

[0034]

[Table 2]

Examples 11 to 13 and Comparative Examples 8 to 10 Various scouring agent compositions having the compositions shown in Table 3 were prepared, and the floc formation concentration, foaming and rewetability of each of the compositions were determined in Examples 1 to 13.
Evaluation was made in the same manner as in Example 5. Table 3 shows the results.

[0036]

[Table 3]

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 8, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009] Of the conventional surfactants, it is extremely difficult to increase the concentration of anionic surfactants. In addition, since the nonionic surfactant is usually in a liquid form (solvent system) containing 100% of the active ingredient, it is possible to increase the concentration. However, nonionic surfactants have poor compatibility with high alkalis, and the scouring effect under high alkalis performed today is not sufficient. That is, a scouring agent composition having a high concentration and exhibiting a sufficient scouring effect even under highly alkaline conditions has not been found yet.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

[0034]

[Table 2]

Claims (9)

[Claims] 1. A high-concentration scouring agent composition comprising 5 to 20% by weight of water, an alkyl ether phosphate ester surfactant and a nonionic surfactant. 2. The high-concentration scouring according to claim 1, wherein the alkyl ether phosphate ester surfactant is a polyoxyalkylene alkyl ether phosphate represented by the following general formula (I) and / or a salt thereof. Composition. R ₁ O (AO) _m H (I) (wherein, R ₁ is an alkyl group having 7 to 24 carbon atoms,
An alkenyl group of from 24 to 24, an alkylaryl group of from 7 to 19 carbon atoms or an aralkyl group of from 6 to 28 carbon atoms,
Is an oxyalkylene group having 2 to 3 carbon atoms, m is an average number of added moles of the oxyalkylene group, and represents a number of 2 to 5. ) 3. The high-concentration scouring agent according to claim 1, wherein the alkyl ether phosphate ester-based surfactant represented by the general formula (I) is a salt partially or completely neutralized with a nitrogen-containing alkali. Composition. 4. The high-concentration scouring agent composition according to claim 1, further comprising 2 to 40% by weight of an alkyl ether phosphate ester surfactant. 5. The nonionic surfactant according to the following general formula (II)
The high-concentration scouring agent composition according to any one of claims 1 to 4, which is a nonionic surfactant represented by the following formula: R ₂ O (AO) _n H (II) wherein R ₂ is an alkyl group having 7 to 18 carbon atoms,
An alkenyl group having from 18 to 18 or an alkylaryl group having from 8 to 22 carbon atoms, AO is an oxyalkylene group having from 2 to 3 carbon atoms,
n is the average number of added moles of the oxyalkylene group,
The number 20 is shown. ) 6. A nonionic surfactant comprising 50 to 90% by weight.
The high-concentration scouring agent composition according to claim 1, further comprising: 7. The high-concentration scouring agent composition according to claim 1, further comprising 1 to 30% by weight of a glycol. 8. The high-concentration scouring agent composition according to claim 1, which has a viscosity at 3 ° C. of 400 cP (centipoise) or less. 9. The method according to claim 1, which comprises 7 to 15% by weight of water.
9. The high-concentration scouring agent composition according to any one of 8.