JP2001089976A - Finishing agent and method for finishing polyolefin-based fiber for producing nonwoven fabric by dry process - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject finishing agent capable of imparting the subject polyolefin-based fibers with excellent card passability while suppressing the generation of scum or fry during the web production process and also imparting the resultant card web with excellent formation uniformity, water permeability, sustained hydrophilicity and wetback-proofness, and to provide a method for finishing the above fibers with the finishing agent. SOLUTION: This finishing agent comprises a combination of a specific polyether compound with one end thereof blocked with a 28-60C alkyl or alkanoyl group with a specific polyglycerol fatty acid ester formed by esterification of the corresponding polyglycerol 2-14 in degree of condensation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agent and a method for treating polyolefin fibers for producing nonwoven fabric by a dry method. Nonwoven fabrics are produced from polyolefin fibers by a wet method or a dry method. The present invention particularly relates to an improvement in a treating agent and a treating method for a polyolefin fiber for producing a nonwoven fabric by a dry method.

[0002]

2. Description of the Related Art Conventionally, 1) polyoxyalkylene-modified organosiloxane (Japanese Patent Laid-Open Publication No. Hei 1-1) has been used as a treating agent for polyolefin fibers for producing nonwoven fabrics by a wet method or a dry method.
48879), 2) a blend of an alkylolamide type compound and a polyoxyalkylene-modified organosiloxane (Japanese Patent Laid-Open No. 1-148880), 3) a blend of polyglycerin fatty acid ester or a polyoxyalkylene-modified organosiloxane ( JP-A-2-216265),
4) A polyether polyester block copolymer or a blend thereof with a polyoxyalkylene-modified organosiloxane (JP-A-8-226082). 5) Hydrophobicity of the polyoxyalkylene-modified organosiloxane and a hydrocarbon group having 28 or more carbon atoms. A blend with a surfactant as a base (Japanese Patent Publication No. 4-18068) has been proposed.

[0003] However, some of the conventional treating agents as described above are appropriately effective when they are used as a treating agent for polyolefin fibers for nonwoven fabric production by a wet method. When used as a processing agent for polyolefin fibers for nonwoven fabric production, in order to ensure good operability by suppressing the occurrence of scum and fry in the dry nonwoven fabric production process, especially in the web production process,
In addition, good uniformity of the formation of the obtained card web,
There is a problem that the manifestation of the effect is insufficient in imparting water permeability, durable hydrophilicity, and wet back prevention.

[0004]

The problem to be solved by the present invention is that, when the conventional treating agents are used as a treating agent for a polyolefin-based fiber for producing a nonwoven fabric by a dry process, a process for producing a dry nonwoven fabric involves However, in order to suppress the occurrence of scum and fry in the web production process and secure good operability, and to impart good uniformity of formation, water permeability, durable hydrophilicity and wet back prevention to the obtained card web. Above, the effect is insufficiently expressed.

[0005]

Means for Solving the Problems Thus, the present inventors have
As a result of research to solve the above problems, it has been found that a treating agent containing a specific polyether compound and a specific polyglycerin fatty acid ester is properly suitable as a treating agent for polyolefin fibers for nonwoven fabric production by a dry method. Was.

That is, the present invention provides a treating agent for a polyolefin-based fiber for producing a nonwoven fabric by a dry method, comprising a polyether compound represented by the following formula 1 and a polyglycerin fatty acid ester described below (hereinafter referred to as a treating agent). (Hereinafter simply referred to as a treating agent) and a method for treating a polyolefin-based fiber for producing a nonwoven fabric by a dry method, which comprises attaching a predetermined amount of the treating agent to the polyolefin-based fiber for producing a nonwoven fabric by a dry method (hereinafter, simply referred to as a treating method). According to.

[0007]

[Formula 1] R ¹ -A ¹ -OR ²

In the formula 1, R ^{1 is} an alkyl group having 28 to 60 carbon atoms or 28 to 60 carbon atoms.
60 alkanoyl groups R ² : hydrogen, alkyl group having 1 to 4 carbon atoms or 1 to 2 carbon atoms
4 alkanoyl group A ¹ : a polyoxyalkylene group composed of repeating oxyalkylene units having 2 or 3 carbon atoms, wherein the number of repeating oxyalkylene units is from 5 to 100, and Polyoxyalkylene group having at least 50 mol% of ethylene units

Polyglycerin fatty acid ester: a polyglycerin fatty acid ester obtained by subjecting polyglycerin and a fatty acid and / or an ester-forming compound of a fatty acid to an esterification reaction, wherein the degree of condensation of the polyglycerin is 2 to 14.
Wherein the fatty acid is an aliphatic monocarboxylic acid having 6 to 24 carbon atoms, and the ester-forming compound of the fatty acid is an ester-forming compound of an aliphatic monocarboxylic acid having 6 to 24 carbon atoms. ester

Further, the present invention provides a treating agent comprising the following polyether polyester block copolymer in addition to the above polyether compound and polyglycerin fatty acid ester, and a polyolefin for producing a nonwoven fabric by a dry method using the treating agent. The present invention relates to a treatment method for attaching a predetermined amount to a system fiber.

Polyether polyester block copolymer: C1-C4 aliphatic hydroxy compound with C2-C4
Polyether obtained by ring-opening polymerization of the alkylene oxide and ε-caprolactone, respectively, to form a polyoxyalkylene group composed of repeating oxyalkylene units and a polyester group composed of repeating oxycaproyl units in the molecule. A polyester block copolymer, wherein the polyoxyalkylene group has from 5 to 200 mol of oxyalkylene units per hydroxyl group of the aliphatic hydroxy compound and at least 40 mol% of oxyethylene units as oxyalkylene units. And the total number of repetitions of the oxycaproyl unit / the total number of repetitions of the oxyalkylene unit = 1/1 to 1/10
(Molar ratio) polyether polyester block copolymer

Further, the present invention relates to a polyether compound and a polyglycerin fatty acid ester, or in addition to these and the polyether polyester block copolymer, and further comprises a polyoxyalkylene group in the molecule.
The present invention relates to a treating agent comprising a polyoxyalkylene-modified polyorganosiloxane having a proportion of about 38% by weight and a treating method for adhering a prescribed amount of the treating agent to polyolefin fibers for nonwoven fabric production by a dry method.

The polyether compound represented by the formula 1 includes:
1) One end of the polyoxyalkylene group has 28 to 60 carbon atoms.
2) a polyether compound having one end of a polyoxyalkylene group blocked with an alkanoyl group having 28 to 60 carbon atoms and the other end of which is a hydroxyl group, 3) A polyoxyalkylene group in which one end of the polyoxyalkylene group is blocked with an alkyl group having 28 to 60 carbon atoms and the other end is blocked with an alkyl group having 1 to 4 carbon atoms; 4) one end of the polyoxyalkylene group has 28 carbon atoms; A polyether compound which is blocked with an alkanoyl group of from 60 to 60 and the other end of which is blocked with an alkyl group of from 1 to 4 carbon atoms; 5) one end of a polyoxyalkylene group is blocked with an alkyl group of from 28 to 60 carbon atoms; A polyether compound having one end capped with an alkanoyl group having 1 to 4 carbon atoms; 6) one end of a polyoxyalkylene group having 28 to 28 carbon atoms;
60 is blocked by an alkanoyl group and the other end has 1 to 1 carbon atoms.
And polyether compounds blocked with an alkanoyl group of 4.

In the polyether compound represented by the formula 1, R ¹ which blocks one end of the polyoxyalkylene group is as follows: 1) octakosyl group, triacontyl group, dotriacontyl group, tetratriacontyl group, tetracontyl group, dotetracontyl group, Hexatetracontyl group,
A pentacontyl group, a hexacontyl group, etc.
Alkyl group of 60, 2) octacosanoyl group, triacontanoyl group, dotriacontanoyl group, tetratriacontanoyl group, tetracontanoyl group, dotetracontanoyl group, hexatetracontanoyl group, pentacontanoyl group, hexa 28 to 6 carbon atoms such as contanoyl group
Examples thereof include an alkanoyl group of 0, among which an alkyl group having 30 to 40 carbon atoms is preferable.

In the polyether compound represented by the formula 1, R ² constituting the other end of the polyoxyalkylene group includes 1) hydrogen, 2) methyl, ethyl, propyl, isopropyl, butyl and the like. An alkyl group having 1 to 4 carbon atoms, 3) an alkanoyl group having 1 to 4 carbon atoms such as a formyl group, an acetyl group, a propionyl group, a butyryl group, and an isobutyryl group, among which hydrogen is preferable.

In the polyether compound represented by the formula 1, the oxyalkylene unit constituting the polyoxyalkylene group is an oxyethylene unit or an oxyethylene unit and an oxypropylene unit. Is 50 mol% or more, preferably 70 mol% or more. Such polyoxyalkylene groups include 1) those composed solely of oxyethylene units, and 2) those in which 50 mol% or more of oxyethylene units and 50 mol% or less of oxypropylene units are combined in a block and / or random manner. And those consisting of The number of repeating oxyalkylene units constituting such a polyoxyalkylene group is 5 to 100, preferably 10 to 50.

The above-described polyether compound represented by the formula 1 can be synthesized by a known synthesis method, for example, Japanese Patent Publication No. 49-148.
It can be synthesized by a synthesis method as described in JP-A-41.

The polyglycerin fatty acid ester used together with the polyether compound represented by the formula 1 is a polyglycerin fatty acid ester obtained by subjecting polyglycerin and a fatty acid and / or an ester-forming compound of a fatty acid to an esterification reaction. Such polyglycerin fatty acid esters include:
1) Complete ester in which all the hydroxyl groups in polyglycerin are completely esterified; 2) Partial ester in which part of all the hydroxyl groups in polyglycerin is esterified; Preferred is a partial ester in which about 85 mol% is esterified,
Partial esters in which mol% is esterified are more preferred.

In the polyglycerin fatty acid ester,
The raw material polyglycerin can be obtained by a dehydration condensation reaction of glycerin or a ring-opening addition reaction of glycerin and glycidol in the presence of a catalyst. When glycerin is dehydrated and condensed in the presence of a catalyst, the resulting polyglycerin contains a part of a cyclic polyglycerin as a by-product. Can be used as In the present invention, as the above polyglycerin, those having a condensation degree of 2 to 14 are used, and those having a condensation degree of 3 to 12 are preferably used.

In the polyglycerin fatty acid ester,
As the raw material fatty acids, 1) caproic acid, caprylic acid,
C6-24 saturated aliphatic monocarboxylic acids such as capric acid, lauric acid, palmitic acid, stearic acid, arachinic acid, behenic acid and lignoceric acid; 2) caproleic acid, myristoleic acid, palmitoleic acid, 9-icosene 6 to 6 carbon atoms such as acid, 11-docosenoic acid and erucic acid
24 unsaturated aliphatic monocarboxylic acids and the like,
Among them, saturated aliphatic monocarboxylic acids having 12 to 22 carbon atoms such as lauric acid, palmitic acid, stearic acid, arachinic acid, and behenic acid are preferred.

In the polyglycerin fatty acid ester,
Examples of the ester-forming compound of a fatty acid as a raw material include: 1) methyl caproate, methyl caprylate, methyl caprate, methyl laurate, ethyl laurate, methyl palmitate, methyl stearate, ethyl stearate;
Lower alkyl esters of saturated aliphatic monocarboxylic acids having 6 to 24 carbon atoms, such as methyl arachiate, methyl behenate, methyl lignoserate, 2) methyl caproleate, methyl myristoleate, methyl palmitoleate, 9-
Lower alkyl esters of unsaturated aliphatic monocarboxylic acids having 6 to 24 carbon atoms such as methyl icosenoate, methyl 11-docosenoate and ethyl erucate, etc., among which methyl laurate, ethyl laurate, methyl palmitate And lower alkyl esters of saturated aliphatic monocarboxylic acids having 12 to 22 carbon atoms, such as methyl stearate, ethyl stearate, methyl arachiate and methyl behenate.

The polyglycerin fatty acid ester described above can be synthesized by a known synthesis method, for example, as described in JP-A-5-140037.
Can be synthesized by the synthesizing method described in Japanese Patent Application Laid-Open No. Hei. Specific examples of such polyglycerin fatty acid esters include diglycerin monolaurate, diglycerin monooleate,
Tetraglycerin monolaurate, tetraglycerin monostearate, tetraglycerin distearate, hexaglycerin monolaurate, hexaglycerin monomyristate, hexaglycerin monostearate, hexaglycerin distearate, hexaglycerol dioleate Esters, decaglycerin tristearate and the like.

The treating agent of the present invention contains the polyether compound represented by the formula 1 and the polyglycerin fatty acid ester as described above. The total content of the polyether compound and the polyglycerin fatty acid ester in the treating agent is usually 30% by weight or more.
It is preferably at least 0% by weight, more preferably at least 50% by weight. In the present invention, the content ratio of the polyether compound and the polyglycerin fatty acid ester is not particularly limited, but the polyether compound / the polyglycerin fatty acid ester = 20/80 to 90/10
(Weight ratio), preferably 40/60.
More preferably, the content ratio is set to 80 to 20 (weight ratio).

For the purpose of further improving the effects of the present invention, it is preferable to use a specific polyether polyester block copolymer in combination with the treating agent of the present invention. Such polyether polyester block copolymers include 1) 1
Polyether polyester formed by ring-opening polymerization of an alkylene oxide to a hexavalent aliphatic hydroxy compound to form a polyether block, and then ring-opening polymerization of ε-caprolactone to a terminal hydroxyl group of the polyether block to form a polyester block. Block copolymer, 2) 1
Polyether polyester formed by ring-opening polymerization of ε-caprolactone to a hexavalent aliphatic hydroxy compound to form a polyester block, and then ring-opening polymerization of an alkylene oxide to a terminal hydroxyl group of the polyester block to form a polyether block. Block copolymer, 3)
A polyether polyester block copolymer formed by alternately connecting a polyether block formed by ring-opening polymerization of alkylene oxide and a polyester block formed by ring-opening polymerization of ε-caprolactone to a monovalent to hexavalent aliphatic hydroxy compound is included. Is done.

The above-mentioned mono- to hexa-valent aliphatic hydroxy compounds include: a) a mono- to hexa-valent aliphatic alcohol;
Polyhydric alcohol partial ester of a hexavalent aliphatic alcohol and an aliphatic monocarboxylic acid having 6 to 18 carbon atoms; c) a hydroxycarboxylic acid having 1 to 5 hydroxyl groups in a molecule;
d) an alkanolamine having 1 to 3 hydroxyl groups in the molecule, e) an alkyl dialkanolamine or dialkyl lucanolamine having 1 to 18 carbon atoms in the alkyl group,
f) Alkoxylated polyamines having 1 to 5 hydroxyl groups in the molecule and the like;
Preferred are the aliphatic alcohols and the polyhydric alcohol partial esters of b).

The monohydric to hexavalent aliphatic alcohols of the above a) include: 1) methanol, ethanol, butanol,
Monohydric aliphatic alcohols such as ethylhexanol, lauryl alcohol, stearyl alcohol and benzyl alcohol; 2) 2 to 6 such as ethylene glycol, propylene glycol, butanediol, hexanediol, glycerin, trimethylolpropane, sorbitol and pentaerythritol Examples thereof include a divalent aliphatic alcohol, and among them, a divalent to tetravalent aliphatic alcohol such as ethylene glycol, glycerin, and pentaerythritol is preferable.

Examples of the polyhydric alcohol partial ester of b) include: 1) fatty acid monoesters of dihydric aliphatic alcohols obtained from, for example, 1 mol of ethylene glycol or butanediol and 1 mol of an aliphatic monocarboxylic acid.
2) For example, obtained from 1 mol of glycerin or trimethylolpropane and 1 to 2 mol of an aliphatic monocarboxylic acid,
Fatty acid mono- or diesters of trihydric aliphatic alcohols or mixed esters thereof; 3) fatty acid mono-to-trihydric aliphatic alcohols obtained, for example, from 1 mol of pentaerythritol and 1 to 3 mol of aliphatic monocarboxylic acid Esters or mixed esters thereof, 4) fatty acid mono-pentaesters of hexavalent aliphatic alcohols obtained from, for example, 1 mol of sorbitol and 1 to 5 mol of aliphatic monocarboxylic acid or mixed esters thereof, 5) Examples include aliphatic monocarboxylic acid partial esters of sorbitan and sorbite.

The aliphatic monocarboxylic acids used for obtaining the polyhydric alcohol partial ester of the above b) include: 1) saturated aliphatic monocarboxylic acids such as hexanoic acid, octanoic acid, lauric acid and stearic acid; Toleic acid,
Examples thereof include those having 6 to 18 carbon atoms such as unsaturated aliphatic monocarboxylic acids such as oleic acid.

Examples of the hydroxycarboxylic acid having 1 to 5 hydroxyl groups in the molecule of the above c) include 1) glycolic acid,
Monohydroxycarboxylic acids such as lactic acid, malic acid, hydroxybutyric acid and hydroxystearic acid; 2) di-pentahydroxycarboxylic acids such as tartaric acid, tetrahydroxysuccinic acid and gluconic acid;

Examples of the alkanolamine having 1 to 3 hydroxyl groups in the molecule of d) include 1) monoalkanolamine such as monoethanolamine and monoisopropanolamine, 2) dialkanolamine such as diethanolamine and dipropanolamine, 3) Trialkanolamines such as triethanolamine and triisopropanolamine.

In the above e), the alkyl group has 1 to 18 carbon atoms.
Examples of the alkyldialkanolamine or dialkylalkanolamine include 1) dialkylalkanolamines such as diethylethanolamine and dibutylethanolamine, and 2) alkyldialkanolamines such as ethyldiethanolamine, butyldiethanolamine and stearyldiisopropanolamine. .

The alkoxylated polyamine having 1 to 5 hydroxyl groups in the molecule of the above f) includes N-2-hydroxyethylaminoethylamine, N, N-di (2-hydroxyethyl) aminopropylamine, N, N , N ',
N'-tetra (2-hydroxypropyl) -ethylenediamine, N, N-di (2-hydroxypropyl) -N '
-2-hydroxypropyl-N ″, N ″ -di (2-
(Hydroxypropyl) -diethylenetriamine and the like.

In the present invention, the oxyalkylene units forming the polyether block in the polyether polyester block copolymer are oxyalkylene units having 2 to 4 carbon atoms such as oxyethylene group, oxypropylene group and oxybutylene group. Has an oxyethylene unit of at least 40 mol%, preferably at least 50 mol%, as the oxyalkylene unit. Such polyether blocks are: 1) those composed of only oxyethylene units, 2) 40 mol% or more of oxyethylene units and 60 mol% or less of other oxyalkylene units bonded in block and / or random form. Included are those consisting of

In the polyether polyester block copolymer, the number of repeating oxyalkylene units forming the polyether block is 5 to 200 per hydroxyl group contained in the above-mentioned monovalent to hexavalent aliphatic hydroxy compound.
However, it is preferably set to 50 to 120. This is because the polyolefin-based fiber for producing a nonwoven fabric by a dry method has excellent durability and hydrophilicity.

In the present invention, the number of repetitions of the oxycaproyl units forming the polyester block in the polyether polyester block copolymer is calculated as follows: the total number of repetitions of the oxycaproyl units / the total number of repetitions of the oxyalkylene units = 1/1 to 1 / 10 (molar ratio), preferably 1 / 1.5 to 1/4 (molar ratio). This is because the polyolefin-based fiber for producing a nonwoven fabric by a dry method has excellent durability and hydrophilicity.

The polyether polyester block copolymer described above can be synthesized by a known synthesis method. Examples of the method for forming the polyether block in the polyether polyester block copolymer include, for example, a hydroxy compound, ethylene oxide, propylene oxide, butylene oxide in the presence of a basic catalyst such as sodium hydroxide or potassium hydroxide as a catalyst. And the like, a method of successively performing ring-opening polymerization of an alkylene oxide having 2 to 4 carbon atoms. As a method for forming a polyester block in the polyether polyester block copolymer, for example, in the presence of an anionic polymerization catalyst, a coordinating anion polymerization catalyst, a cationic polymerization catalyst, etc.
-A method of sequentially carrying out ring-opening polymerization of caprolactone.

The polyether polyester block copolymer used in the present invention is obtained by starting from an aliphatic hydroxy compound having 1 to 6 valences and linking the polyether block and the polyester block via the hydroxyl group. However, according to the present invention, as a bonding form between a polyether block and a polyester block, a polyether block is bonded to a hydroxyl group of a monovalent to hexavalent aliphatic hydroxy compound, and then to a terminal hydroxyl group of the polyether block. Those in which polyester blocks are bonded are preferred. In this case, the monovalent to hexavalent aliphatic hydroxy compound used as a starting material includes a monovalent to hexavalent aliphatic alcohol, or a divalent to hexavalent aliphatic alcohol and a carbon number of 6-1.
The polyhydric alcohol partial ester with an aliphatic monocarboxylic acid of No. 8 is preferred, and among those described above, those having a divalent to tetravalent number are more preferred.

In the above case, the polyether polyester block copolymer has a hydroxyl group based on a polyoxycaproyl group constituting the polyester block as a terminal group. In the present invention, an acylated polyether polyester block copolymer obtained by reacting an acylating agent with a terminal hydroxyl group of such a polyether polyester block copolymer together with or instead of the polyether polyester block copolymer may be used. it can.

The acylated polyether polyester block copolymer includes 1) a completely acylated product obtained by acylating all terminal hydroxyl groups of the polyether polyester block copolymer with an acylating agent, and 2) a polyether polyester block copolymer. A partially acylated product obtained by acylating a part of the terminal hydroxyl group of the union with an acylating agent is included.
Examples of the acyl group formed by the acylation include: 1) the number of carbon atoms such as an acetyl group, a propanoyl group, a butanoyl group, a hexanoyl group, a heptanoyl group, an octanoyl group, a nonanoyl group, a decanoyl group, a hexadecanoyl group, and an octadecanoyl group; 2 to 18 alkanoyl groups; 2) C16 to C22 alkenoyl groups such as hexadecenoyl group, eicosenoyl group and octadecenoyl group.

When the above-described polyether polyester block copolymer is used in combination, the treating agent of the present invention is used in combination with the total amount of the polyether compound represented by the above formula 1 and the polyglycerin fatty acid ester. Total amount of the polyether compound and the polyglycerin fatty acid ester / the polyether polyester block copolymer =
Those containing at a ratio of 40/60 to 90/10 (weight ratio) are preferable, and those containing at a ratio of 50/50 to 80/20 (weight ratio) are more preferable.

For the purpose of further improving the effect of the present invention, a polyoxyalkylene-modified polyorganosiloxane having a polyoxyalkylene group in a proportion of 5 to 38% by weight in the molecule is used in combination with the treating agent of the present invention. Is preferred.
Among them, it is more preferable to use a polyoxyalkylene-modified polyorganosiloxane represented by the following formula 2 in combination.

[0042]

(Equation 2)

In the formula 2, Y ¹ , Y ² , Y ³ : a methyl group or a polyoxyalkylene-modified group represented by R ⁴ —A ² —O—R ⁵ , at least one of which is a polyoxyalkylene A modifying group (R ⁴ : an alkylene group having 2 to 5 carbon atoms, R ⁵ : hydrogen or an alkyl group having 1 to 12 carbon atoms,
A ² : a polyoxyalkylene group composed of repeating oxyalkylene units having 2 or 3 carbon atoms, wherein the number of repeating oxyalkylene units is 10 to 100, and 50 oxyethylene units are used as the oxyalkylene units. R ³ : alkyl group having 2 to 5 carbon atoms or phenyl group p, q: p is 7 to 150, q is an integer of 0 to 20, and 7 ≦ p + q ≦ 150 R: an integer from 0 to 10

The polyoxyalkylene-modified polyorganosiloxane represented by the formula 2 is a linear polyorganosiloxane containing, as essential constituent units, a dimethylsiloxane unit and a siloxane unit having a polyoxyalkylene-modified group. Examples of the siloxane unit having a polyoxyalkylene-modified group include a divalent methyl / polyoxyalkylene-modified siloxane unit enclosed by r in the polyorganosiloxane chain in Formula 2, and a monovalent dimethyl / polysiloxane as a terminal group. Examples of the oxyalkylene-modified siloxane unit include those having a divalent methyl / polyoxyalkylene-modified siloxane unit enclosed by r as such a polyoxyalkylene-modified siloxane unit. In the case where the polyoxyalkylene-modified group is contained not in the terminal but in the polyorganosiloxane chain, the siloxane unit containing the modified group is one or two to ten repeating units. In this case, as the terminal group, even if Y ¹ and Y ^{2 in} Formula 2 are trimethylsiloxane units corresponding to a methyl group, or dimethyl / polyoxyalkylene-modified siloxane where Y ¹ and Y ² are polyoxyalkylene-modified groups Although there is no problem with a unit, a trimethylsiloxane unit is preferred.

In the polyoxyalkylene-modified polyorganosiloxane represented by the formula (2), the siloxane unit having no polyoxyalkylene-modified group which forms the polyorganosiloxane main chain is, in addition to the dimethylsiloxane unit enclosed by p, And a divalent organosiloxane unit enclosed by q. Examples of the divalent organosiloxane unit enclosed by q include a methylethylsiloxane unit, a methylpropylsiloxane unit, a methylhexylsiloxane unit, and a methylphenylsiloxane unit. The repeating number of the siloxane unit having no polyoxyalkylene modifying group is such that p is 7 to 15.
0 and q are 0 to 20, and the sum of p and q is 7 to
150, but only composed of dimethylsiloxane units (when q in formula 2 is 0), and the number of repetitions is 10
-70 are preferred.

In the polyoxyalkylene-modified group represented by R ⁴ —A ² —O—R ⁵ in the formula 2, R ⁴ is an alkylene group connecting the silicon atom of the siloxane unit to the polyoxyalkylene group. Group, a propylene group, a trimethylene group, a tetramethylene group, a pentamethylene group or the like, an alkylene group having 2 to 5 carbon atoms, such as an ethylene group,
Trimethylene groups are preferred. R ⁵ is a terminal group of a polyoxyalkylene group, which is hydrogen, methyl, ethyl, propyl, butyl, pentyl, hexyl,
Examples thereof include an octyl group, a decyl group and a dodecyl group, and a hydrogen or methyl group is preferable. Further, the oxyalkylene unit constituting A ² is an oxyethylene unit or an oxyethylene unit and an oxypropylene unit, and those having 50 mol% or more, preferably 70 mol% or more of oxyethylene units as the oxyalkylene unit. It is. Such polyoxyalkylene groups include 1) those composed solely of oxyethylene units, and 2) those in which 50 mol% or more of oxyethylene units and 50 mol% or less of oxypropylene units are combined in a block and / or random manner. And those consisting of The number of repeating oxyalkylene units constituting such a polyoxyalkylene group is 10 to 1
00, but preferably 20 to 70.

The polyoxyalkylene-modified polyorganosiloxane described above can be synthesized by a known synthesis method, for example, the synthesis method described in US Pat. No. Re. When such a polyoxyalkylene-modified polyorganosiloxane is used in combination, the treating agent of the present invention is used with respect to the total amount of the polyether compound represented by the above formula 1, the polyglycerin fatty acid ester, and the polyether polyester block copolymer. The total amount of the polyether compound, the polyglycerin fatty acid ester, and the polyether polyester block copolymer / the polyoxyalkylene-modified polyorganosiloxane = 40 /
Those containing at a ratio of 60 to 95/5 (weight ratio) are preferable, and those containing at a ratio of 60/40 to 90/10 (weight ratio) are more preferable.

In addition to the polyether compound represented by the above-mentioned formula 1, polyglycerin fatty acid ester, polyetherester block copolymer and polyoxyalkylene-modified polyorganosiloxane, the treating agent of the present invention may be Other surfactants can be used in combination. Known surfactants can be used as such surfactants. For example, 1) a polyoxyalkylene alkyl ether, a polyoxyalkylene alkyl phenyl ether, a polyoxyalkylene alkyl ester, a polyoxyalkylene castor oil, wherein each of the oxyalkylene groups comprises an oxyethylene group and / or an oxypropylene group, Non-ionic surfactants having a polyoxyalkylene group, such as polyoxyalkylene hydrogenated castor oil,
2) Nonionic surfactants of polyhydric alcohol partial ester type, such as sorbitan monolaurate, sorbitan triolate, glycerin monolaurate, diglycerin dilaurate, and 3) oxyalkylene group is oxyethylene group and / or Polyoxyalkylenes such as long-chain alkyl group-containing polyoxyalkylene alkylamino ethers composed of oxypropylene groups, polyether polyamines having 2 to 4 polyoxyalkylene amino ether sites, and fatty acid amide compounds having polyoxyalkylene groups A nitrogen-containing nonionic surfactant having a group, 4) an aliphatic sulfate salt, an aliphatic sulfonate salt, an aliphatic phosphate salt, an aliphatic carboxylate, an aliphatic sulfate salt having a polyoxyalkylene group,
Anionic surfactants such as an aliphatic sulfonate salt having a polyoxyalkylene group, an aliphatic phosphate salt having a polyoxyalkylene group, 5) an acid-neutralized product of a long-chain alkylamine, and an acid of a polyoxyalkylenealkylaminoether Cationic surfactants having an amine salt site, such as neutralized products, acid neutralized products of fatty acid amide compounds having a polyoxyalkylene group, and acid neutralized products of crosslinked polyoxyalkylene polyamine polyamides; 6) polyoxyalkylene groups Cationic surfactants having a quaternizing moiety such as quaternized fatty acid amide compounds having a quaternary compound, tetraalkylammonium salts, alkylimidazolinium salts, and tetraalkylphosphonium salts; 7) long-chain alkyldimethylbetaines and alkylimidazolines; Betaine compounds, long-chain alkylamino Amphoteric surfactants such as are exemplified.

When the treating agent of the present invention is adhered to the polyolefin-based fiber for producing a nonwoven fabric by a dry method, the treating agent is applied to the polyolefin-based fiber in the spinning step, the drawing step, and the respective steps after the drawing by the dipping method. It can be attached by a lubrication method such as a spraying method, a roller lubrication method, or a guide lubrication method using a metering pump, but it is preferable to adhere by an immersion method. The amount of the treatment agent is 0.05 to 5% by weight based on the weight of the polyolefin fiber.
Preferably it is 2.5% by weight. This is for imparting the desired excellent card-permeability to the polyolefin-based fiber, and for imparting excellent uniformity of formation, water permeability, durable hydrophilicity and wet-back prevention to the obtained card web.

It is preferable that the treating agent of the present invention is attached to the polyolefin fiber as an aqueous liquid. To prepare such an aqueous liquid, a known mechanical emulsification method using a homomixer, a homogenizer, or the like can be applied. The treating agent concentration of the prepared aqueous liquid is usually 1 to 30% by weight,
Advantageously, it is in% by weight.

Examples of the polyolefin fibers to which the treating agent of the present invention is applied include polyethylene fibers, polypropylene fibers, polybutene fibers, and composite fibers having a core-sheath structure in which the sheath is a polyolefin fiber. Examples thereof include polyethylene / polypropylene composite fibers and polyethylene / polyester composite fibers that are polyethylene fibers.

[0052]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the processing agent according to the present invention include the following 1) to 22). 1) 50% by weight of the following polyether compound (H-1),
And the following polyglycerin fatty acid ester (J-1) 5
A treating agent containing 0% by weight. Polyether compound ^(H-1): R 1 triacontyl group in Formula 1, R ² is hydrogen, a polyether compound when A ¹ is a polyoxyethylene group consisting of repetition of 10 moles of oxyethylene units polyglycerin Fatty acid ester (J-1): Condensation degree is 4
Polyglycerol fatty acid ester obtained by esterifying 16.7 mol% of the hydroxyl groups of tetraglycerin with stearic acid by esterification reaction

2) The following polyether compound (H-2)
A treating agent comprising 70% by weight and 30% by weight of the following polyglycerin fatty acid ester (J-2). Polyether compound (H-2): R ¹ is tetracontyl group in Formula 1, R ² is hydrogen, a polyether compound when A ¹ is a polyoxyethylene group consisting of repetition of 30 moles of oxyethylene units polyglycerin Fatty acid ester (J-2): Condensation degree is 6
Polyglycerol fatty acid ester obtained by esterifying 12.5 mol% of the hydroxyl groups of hexaglycerin with esterification reaction of hexaglycerin and myristic acid

3) The following polyether compound (H-3)
A treating agent comprising 80% by weight and 20% by weight of the following polyglycerin fatty acid ester (J-3). Polyether compound (H-3): repeat polyoxyethylene consisting of R ¹ in formula 1 is triacontanyl alkanoyl group, R ² is hydrogen, A ¹ is a 24 mol of oxyethylene units and 16 moles of oxypropylene units Polyether compound in the case of polyoxypropylene group Polyglycerin fatty acid ester (J-3): Condensation degree is 4
Polyglycerol fatty acid ester obtained by esterifying 33.3 mol% of the hydroxyl groups of the tetraglycerin with stearic acid by esterification reaction

4) The following polyether compound (H-4)
A treating agent comprising 30% by weight and 70% by weight of the following polyglycerin fatty acid ester (J-4). Polyether compound (H-4): a polyether compound in which R ^{1 in} Formula 1 is a tetracontanoyl group, R ² is hydrogen, and A ¹ is a polyoxyethylene group composed of repeating 25 mol of oxyethylene units. Polyglycerin fatty acid ester (J-4): Condensation degree is 1
Polyglycerol fatty acid ester obtained by subjecting decaglycerin of 0 to an esterification reaction with stearic acid to esterify 25.0 mol% of the hydroxyl groups of the decaglycerin

5) The following polyether compound (H-5)
A treating agent comprising 60% by weight and 40% by weight of the following polyglycerin fatty acid ester (J-5). Polyether compound (H-5): a polyether compound in which R ^{1 in} Formula 1 is a pentacontyl group, R ² is a methyl group, and A ¹ is a polyoxyethylene group composed of repeating 30 moles of oxyethylene units. Polyglycerin fatty acid ester (J-5): Condensation degree is 4
Polyglycerol fatty acid ester obtained by esterifying 16.7 mol% of the hydroxyl groups of tetraglycerin with myristic acid by esterification reaction

6) The following polyether compound (H-6)
A treating agent comprising 60% by weight and 40% by weight of the following polyglycerin fatty acid ester (J-6). Polyether compound (H-6): R ¹ triacontyl group in Formula 1, R ² is an acetyl group, a polyether compound when A ¹ is a polyoxyethylene group consisting of repetition of 20 moles of oxyethylene units poly Glycerin fatty acid ester (J-6): Condensation degree is 6
Polyglycerol fatty acid ester obtained by esterifying 50.0 mol% of the hydroxyl groups of hexaglycerin with an esterification reaction of hexaglycerin and oleic acid

7) The above polyether compound (H-1)
30% by weight of the polyglycerin fatty acid ester (J
-1) A treating agent comprising 30% by weight and 40% by weight of the following polyether polyester block copolymer (K-1). Polyether polyester block copolymer (K-
1): Ring-opening polymerization of a mixture of ethylene oxide and propylene oxide with ethylene glycol to form a polyether block, and then ring-opening polymerization of ε-caprolactone to form a polyester block. Has 75 moles of oxyalkylene units per 1 hydroxyl group, has 67 mole% of oxyethylene units as oxyalkylene units, and has the total number of oxycaproyl unit repeats / the total number of oxyalkylene unit repeats = 1/3 (molar ratio )
Polyether polyester block copolymer having a proportion of

8) The above polyether compound (H-1)
49% by weight of the polyglycerin fatty acid ester (J
-1) A treating agent containing 21% by weight and 30% by weight of the following polyether polyester block copolymer (K-2). Polyether polyester block copolymer (K-
2): Ring opening polymerization of ethylene oxide with ethylene glycol to form a polyether block, and then ε-
A polyester block formed by ring-opening polymerization of caprolactone, wherein the polyether block has 75 moles of oxyalkylene units per hydroxyl group of ethylene glycol, 100 mole% of oxyethylene units as oxyalkylene units, and oxycaproyl Polyether polyester block copolymer having a ratio of the total number of repeating units / the total number of repeating oxyalkylene units = 1/3 (molar ratio)

9) The above polyether compound (H-2)
35% by weight of the polyglycerin fatty acid ester (J
-2) A treating agent containing 35% by weight and 30% by weight of the following polyether polyester block copolymer (K-3). Polyether polyester block copolymer (K-
3): Ring-opening polymerization of propylene oxide on glycerin, ring-opening polymerization of ethylene oxide to form a polyether block, and then ring-opening polymerization of ε-caprolactone to form a polyester block. Glycerin has 75 moles of oxyalkylene units per hydroxyl group and has 80 mole% of oxyethylene units as oxyalkylene units;
And a polyether polyester block copolymer having a ratio of the total number of oxycaproyl units / the total number of oxyalkylene units = 1 / 2.5 (molar ratio).

10) The polyether compound (H-
2) A treating agent comprising 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-1), and 40% by weight of the following polyether polyester block copolymer (K-4). Polyether polyester block copolymer (K-
4): Ring-opening polymerization of ethylene oxide to glycerin to form a polyether block, followed by ring-opening polymerization of ε-caprolactone to form a polyester block, wherein the polyether block has a molar ratio of 75 mol per hydroxyl group of glycerin. It has oxyalkylene units and 100 oxyethylene units as oxyalkylene units.
%, And the total number of oxycaproyl units / the total number of oxyalkylene units = 1 / 2.5
(Molar ratio) polyether polyester block copolymer

11) The polyether compound (H-
2) A treating agent comprising 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-1), and 40% by weight of the following polyether polyester block copolymer (K-5). Polyether polyester block copolymer (K-
5): Ring-opening polymerization of a mixture of ethylene oxide and propylene oxide on pentaerythritol to form a polyether block, and then ring-opening polymerization of ε-caprolactone to form a polyester block. Each hydroxyl group has 60 moles of oxyalkylene units and 75 oxyethylene units as oxyalkylene units.
Mol%, and a ratio of the total number of oxycaproyl units / the total number of oxyalkylene units = 1/2 (molar ratio).

12) The polyether compound (H-
2) A treating agent containing 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-1), and 40% by weight of the following polyether polyester block copolymer (K-6). Polyether polyester block copolymer (K-
6): Ring-opening polymerization of ethylene oxide to sorbitan monostearate to form a polyether block, and then ring-opening polymerization of ε-caprolactone to form a polyester block, wherein the polyether block is a hydroxyl group of sorbitan monostearate. Each oxyalkylene unit has 60 moles of oxyalkylene units, 100 mole% of oxyethylene units as oxyalkylene units, and total number of oxycaproyl units / total number of oxyalkylene units = 1 / 1.5 (molar ratio) Polyether polyester block copolymer having a ratio of

13) The polyether compound (H-
1) A treating agent comprising 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-2), and 40% by weight of the following polyether polyester block copolymer (K-7). Polyether polyester block copolymer (K-
7): An acylated polyether polyester block copolymer obtained by acylating the polyether polyester block copolymer (K-3) with stearic acid.

14) The polyether compound (H-
2) A treating agent comprising 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-1), and 40% by weight of the following polyether polyester block copolymer (K-8). Polyether polyester block copolymer (K-
8): An acylated polyether polyester block copolymer obtained by acylating the polyether polyester block copolymer (K-5) with stearic acid

15) The polyether compound (H-
1) A treating agent comprising 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-2), and 40% by weight of the following polyether polyester block copolymer (K-9). Polyether polyester block copolymer (K-
9): Ring-opening polymerization of ε-caprolactone to glycerin to form a polyester block, and then ring-opening polymerization of ethylene oxide to form a polyether block. It has oxyalkylene units and 100 oxyethylene units as oxyalkylene units.
%, And the total number of oxycaproyl units / the total number of oxyalkylene units = 1 / 2.5
(Molar ratio) polyether polyester block copolymer

16) The polyether compound (H-
2) A treating agent containing 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-1), and 40% by weight of the following polyether polyester block copolymer (K-10). Polyether polyester block copolymer (K-1
0): Ring-opening polymerization of ethylene oxide with gluconic acid to form a polyether block, and then ring-opening polymerization of ε-caprolactone to form a polyester block. Moles of oxyalkylene units and 100
Mol%, and having a ratio of the total number of oxycaproyl units / the total number of oxyalkylene units = 1/1 (molar ratio).

17) The polyether compound (H-
1) A treating agent comprising 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-2), and 40% by weight of the following polyether polyester block copolymer (K-11). Polyether polyester block copolymer (K-1
1): Ring opening polymerization of ethylene oxide with triethanolamine to form a polyether block, and then ε
-Ring-opening polymerization of caprolactone to form a polyester block, wherein the polyether block has 40 moles of oxyalkylene units per hydroxyl group of triethanolamine and 100 mole% of oxyethylene units as oxyalkylene units; And a polyether polyester block copolymer having a ratio of total number of oxycaproyl units / total number of oxyalkylene units = 1/1 (molar ratio)

18) The polyether compound (H-
2) A treating agent containing 42% by weight, 18% by weight of the above-mentioned polyglycerin fatty acid ester (J-1), and 40% by weight of the following polyether polyester block copolymer (K-12). Polyether polyester block copolymer (K-1
2): Ring opening polymerization of ethylene oxide with N, N, N ', N'-tetra (2-hydroxypropyl) -ethylenediamine to form a polyether block, and then ε
A polyether block formed by ring-opening polymerization of caprolactone to form a polyester block, wherein N, N, N ′,
N'-tetra (2-hydroxypropyl) -ethylenediamine has 40 moles of oxyalkylene units per hydroxyl group, 100 mole% of oxyethylene units as oxyalkylene units, and total number of oxycaproyl units / oxyalkylene Polyether polyester block copolymer having a ratio of total repeating units = 1/1 (molar ratio)

19) The polyether compound (H-
1) 27% by weight, 27% by weight of the polyglycerin fatty acid ester (J-2), 23% by weight of the polyether polyester block copolymer (K-1), and the following polyoxyalkylene-modified polyorganosiloxane (L) −
1) 19% by weight and the following surfactant mixture (E-
1) A treating agent containing 4% by weight. Polyoxyalkylene-modified polyorganosiloxane (L
-1): Y ¹ and Y ^{2 in} Formula 2 are methyl groups, p is 120, q
Is 0, r is 2, and Y ³ is a polyoxyalkylene-modified group represented by R ⁴ —A ² —O—R ⁵ , wherein R ⁴ is a trimethylene group, R ⁵ is a methyl group, and A ² is 45 mol Polyoxyalkylene-modified polyorganosiloxane in the case of a polyoxyethylene group consisting of repeating oxyethylene units Surfactant mixture (E-1): glycerin monolaurate / polyoxyethylene (15 mol) sorbitan monostearate / Sodium lauryl sulfonate = 30/30/40 (weight ratio) mixture

20) The polyether compound (H-
2) 27% by weight, the above-mentioned polyglycerin fatty acid ester (J-1) 27% by weight, the above-mentioned polyether polyester block copolymer (K-3) 23% by weight, the following polyoxyalkylene-modified polyorganosiloxane (L) −
2) 19% by weight and the following surfactant mixture (E-
2) A treating agent containing 4% by weight. Polyoxyalkylene-modified polyorganosiloxane (L
-2): a polyoxyalkylene-modified group represented by formula 2, wherein Y ¹ and Y ² are methyl groups, p is 80, q is 0, r is 2, and Y ³ is R ⁴ —A ² —O—R ^5. Wherein R ⁴ is a trimethylene group, R ⁵ is hydrogen, and A ² is a polyoxyethylene group composed of repeating 25 moles of oxyethylene units, wherein the polyoxyalkylene-modified polyorganosiloxane surfactant mixture (E- 2): glycerin monolaurate / polyoxyethylene (15 mol) sorbitan monostearate / polyoxyethylene (5
Mol) sodium lauryl ether sulfate = 30
/ 30/40 (weight ratio) mixture

21) The polyether compound (H-
1) 38% by weight, 16% by weight of the polyglycerin fatty acid ester (J-2), 23% by weight of the polyether polyester block copolymer (K-5), and the following polyoxyalkylene-modified polyorganosiloxane (L) −
3) 19% by weight and the following surfactant mixture (E-
3) A treating agent containing 4% by weight. Polyoxyalkylene-modified polyorganosiloxane (L
-3): p in Formula 2 is 100, q is 10, r is 0, R ³
Is a phenyl group, Y ¹ and Y ² are polyoxyalkylene-modified groups represented by R ⁴ —A ² —O—R ⁵ , wherein R ⁴ is a trimethylene group, R ⁵ is hydrogen, and A ² is 30 mol of oxy. Polyoxyalkylene-modified polyorganosiloxane in the case of a polyoxyethylene group consisting of repeating ethylene units and 20 mol of oxypropylene units Surfactant mixture (E-3): glycerin monolaurate / polyoxyethylene (15 mol) Sorbitan monostearate / polyoxyethylene (8
Mol) potassium cetyl ether phosphate = 30 /
30/40 (weight ratio) mixture

22) The polyether compound (H-
2) 38% by weight, 16% by weight of the polyglycerin fatty acid ester (J-1), 23% by weight of the polyether polyester block copolymer (K-1), and the polyoxyalkylene-modified polyorganosiloxane (L) −
1) 19% by weight and the following surfactant mixture (E-
4) A treating agent containing 4% by weight. Surfactant mixture (E-4): a mixture having a ratio of glycerin monolaurate / stearic acid diethanolamide / behenate amidopropyldimethylethylammonium ethosulfate = 40/30/30 (weight ratio)

Embodiments of the processing method according to the present invention include the following 23). 23) The treatment agent 100 according to any one of the above 1) to 22).
g and 900 g of water are vigorously stirred to form a dispersion, and further emulsified by a homogenizer to obtain a 10% by weight aqueous solution of the treating agent. 2.0 denier for non-woven fabric production
A method in which a treatment agent is applied to a 51 mm cut polyethylene / polyester composite fiber cotton by a dipping method so as to be 0.35% by weight.

Hereinafter, examples and the like will be described in order to make the configuration and effect of the present invention more specific, but the present invention is not limited to these examples.

[0076]

EXAMPLES Test Category 1 (Synthesis of Polyether Compound) ・ Synthesis of Polyether Compound (H-1) 438 g (1 mol) of triacontyl alcohol and 2 g of potassium hydroxide were charged into an autoclave, and purged with nitrogen gas. Heated to 120 ° C, ethylene oxide 45
0 g (10.2 mol) was injected and reacted. After an aging reaction for one hour, the catalyst was removed by treatment with an adsorbent to obtain a reaction product. When the obtained reaction product was analyzed, it was found to be a polyether compound (H-1) having an oxyethylene unit repetition number of 10, a hydroxyl value of 63, and a number average molecular weight of 920 (GPC method, polystyrene conversion, the same applies hereinafter). Was.

The polyether compounds (H-2) to (H-
4) and Synthesis of (h-1) to (h-4) In the same manner as in the case of the polyether compound (H-1), the polyether compounds (H-2) to (H-4) and (h-
1) to (h-4) were synthesized.

Synthesis of polyether compound (H-5) 718 g (1 mol) of pentacontyl alcohol was charged into an autoclave, and 5 g of potassium hydroxide powder was used as a catalyst.
Was added, the inside of the autoclave was sufficiently replaced with nitrogen. While stirring, the reaction temperature was maintained at 110 ° C to 120 ° C, and 1,364 g (31 mol) of ethylene oxide was injected under pressure to carry out an addition polymerization reaction. Thereafter, the reaction was aged at the same temperature for 1 hour to complete the reaction. The reaction was transferred to a flask and the catalyst potassium hydroxide was neutralized with phosphoric acid. The phosphate was filtered off from the neutralized product to obtain 2080 g of polyoxyalkylene monopentacontyl ether. 2918 g of the polyoxyalkylene monopentacontyl ether obtained here
(1 mol) and 117 g of a 48% aqueous potassium hydroxide solution were charged into an autoclave, and dehydrated under reduced pressure at 70 to 100 ° C. while stirring. Thereafter, the reaction temperature is raised to 100 to 1
Maintaining at 20 ° C., 53 g (1.05 mol) of methyl chloride
Into the autoclave until the pressure in the autoclave was no longer reduced, and an etherification reaction was performed. The potassium chloride by-produced from the reaction product is filtered off, and the polyether compound (H
-5) was obtained. When this was analyzed, it was a polyoxyalkylene pentacontyl methyl ether in which the polyoxyalkylene group was composed of 30 repeating oxyethylene units.

Synthesis of Polyether Compound (h-5) A polyether compound (h-5) was synthesized in the same manner as in the case of the polyether compound (H-5).

Synthesis of polyether compound (H-6) 1318 g (1 mol) of polyoxyalkylene monotricontyl ether as an intermediate obtained in the same manner as in the synthesis of polyether compound (H-1), ice Acetic acid 72g
(1.2 mol) and 6 g of concentrated sulfuric acid as a catalyst were charged into a flask, the reaction temperature was adjusted to 100 to 110 ° C. with stirring, and dehydration was performed under reduced pressure to perform an esterification reaction. After the completion of the reaction, while cooling, concentrated sulfuric acid and unreacted acetic acid were neutralized with 35 g of 48% potassium hydroxide. Subsequently, the produced water was distilled off under reduced pressure. The by-product inorganic salt was separated by filtration to obtain a polyether compound (H-6). As a result of analysis, it was found that the number of repetitions of the polyoxyalkylene group was 2 in oxyethylene units.
0 was an acetic ester of polyoxyalkylene monotricontyl ether. Table 1 summarizes the contents of each polyether compound synthesized as described above.

[0081]

[Table 1]

In Table 1, EO: oxyethylene unit PO: oxypropylene unit

Test Category 2 (Synthesis of Polyether Polyester Block Copolymer, etc.) Polyether polyester block copolymer (K-
Synthesis of 1) 62 g (1 mol) of ethylene glycol and 20 g of potassium hydroxide were charged into an autoclave, purged with nitrogen gas, heated to 120 ° C., and 4532 g of ethylene oxide.
(103.0 mol) and propylene oxide 2992.
A mixture with 8 g (51.6 mol) was injected and reacted. After an aging reaction for one hour, the catalyst was removed by treatment with an adsorbent to obtain a reaction product. When the obtained reactant was analyzed,
Oxyethylene units / oxypropylene units = 50/2
5 (molar ratio, NMR analysis method, the same applies hereinafter), having a hydroxyl value of 15.2 and a number average molecular weight of 7,500 (GP
C method, polystyrene conversion, the same applies hereinafter). 750 g of the obtained polyether compound
(0.1 mol) and 2.5 g of tetrabutyl titanate were charged into a flask, and stirred under a nitrogen gas stream.
Warmed to 0 ° C. Keep the temperature at 140-150 ° C,
592.8 g (5.2 mol) of caprolactone was added dropwise over 20 minutes. After completion of the dropwise addition, the reaction was continued at 150 ° C. for 3 hours to complete the synthesis, and a reaction product was obtained. When the obtained reaction product was analyzed, the copolymerization ratio of oxyethylene units / oxypropylene units / oxycaproyl units = 50/25/25 (mol%), and a polyether polyester block copolymer having a number average molecular weight of 13200 ( K-1).

Synthesis of Polyether Polyester Block Copolymer (K-5) Polyether Polyester Block Copolymer (K-1)
In the same manner as in the above, a polyether polyester block copolymer (K-5) was obtained.

Synthesis of Polyether Polyester Block Copolymer (K-2) Ethylene glycol (62 g, 1 mol) and potassium hydroxide (17 g) were charged into an autoclave, purged with nitrogen gas, and heated to 120 ° C. to obtain ethylene oxide. 6798g
(154.5 mol) was injected and reacted. After an aging reaction for one hour, the catalyst was removed by treatment with an adsorbent to obtain a reaction product. When the obtained reaction product was analyzed, 150 mol of oxyethylene units were added to 1 mol of ethylene glycol, and the hydroxyl value was 16.8 and the number average molecular weight was 680.
0 was a polyether compound. 680 g (0.1 mol) of the obtained polyether compound and 4.2 g of tetrabutyl titanate were charged into a flask, and heated to 150 ° C. while stirring under a nitrogen gas stream. Maintaining the temperature at 140 to 150 ° C., 592.8 g of ε-caprolactone (5.2
Mol) was added dropwise over 40 minutes. After dropping, 150 ° C
The reaction was continued for 3 hours to complete the synthesis, and a reaction product was obtained. When the obtained reactant was analyzed, the number of oxyethylene units /
The oxycaproyl unit was a copolymerization ratio of 75/25 (mol%), and was a polyether polyester block copolymer (K-2) having a number average molecular weight of 12,500.

Synthesis of polyether polyester block copolymer (K-4) and (K-6) Polyether polyester block copolymer (K-2)
In the same manner as in the above case, polyether polyester block copolymers (K-4) and (K-6) were obtained.

Synthesis of polyether polyester block copolymer (K-3) 92 g (1 mol) of glycerin and 27 g of potassium hydroxide
Was charged into an autoclave and purged with nitrogen gas.
While maintaining the temperature at 0 to 140 ° C., 2691.2 g (46.4 mol) of propylene oxide was injected under pressure to cause a reaction. After an aging reaction at the same temperature for one hour, 8157.6 g (185.4 mol) of ethylene oxide was further injected and reacted. After an aging reaction at the same temperature for 1 hour, the catalyst was removed by an adsorbent treatment to obtain a reaction product. When the obtained reaction product was analyzed, it was a polyether compound having a copolymerization ratio of oxyethylene units / oxypropylene units = 60/15 (molar ratio), a hydroxyl value of 15.8, and a number average molecular weight of 10,800. Obtained polyether compound 1080
g (0.1 mol) and 3.8 g of tetrabutyl titanate
Into a flask, and stirring under a stream of nitrogen gas.
Warmed to 50 ° C. Keep the temperature at 140-150 ° C,
-1060.2 g (9.3 mol) of caprolactone in 40
Dropped over minutes. After completion of the dropwise addition, the reaction was continued at 150 ° C. for 3 hours to complete the synthesis, and a reaction product was obtained. When the obtained reaction product was analyzed, oxyethylene units / oxypropylene units / oxycaproyl units = 60/15/30
(Mol%) and a number average molecular weight of 2110
0 polyether polyester block copolymer (K-
3).

Synthesis of Polyether Polyester Block Copolymer (K-9) 92 g (1 mol) of glycerin and 7.6 g of tetrabutyl titanate were charged into a flask and heated to 150 ° C. while stirring under a stream of nitrogen gas. . The temperature was maintained at 140 to 150 ° C., and 10567.8 g of ε-caprolactone (92.
7 mol) was added dropwise over 40 minutes. After dropping, 150
The reaction was continued at a temperature of 3 ° C. for 3 hours to complete the synthesis, and the catalyst was removed by an adsorbent treatment to obtain a reaction product. When the obtained reaction product was analyzed, 90 mol of oxycaproyl units were added to 1 mol of glycerin, and it was a polyester polymer having a number average molecular weight of 10,300. 1030 g (0.1 mol) of the obtained polyester polymer and 8 g of potassium hydroxide
Was charged into an autoclave and purged with nitrogen gas.
The mixture was heated to 0 ° C., and 1020.8 g of ethylene oxide (2
3.2 mol) was injected and reacted. After an aging reaction for one hour, the catalyst was removed by treatment with an adsorbent to obtain a reaction product.
When the obtained reaction product was analyzed, the copolymerization ratio of oxyethylene units / oxycaproyl units = 75/30 (mol%) was found to be a polyether polyester block copolymer (K-9) having a number average molecular weight of 20,300. Was.

Synthesis of acylated polyether polyester block copolymer (K-7)
-3) 2110 g (0.1 mol), stearic acid
0 g (0.31 mol) and 8 g of paratoluenesulfonic acid monohydrate were charged into a flask, the temperature was adjusted to 120 to 130 ° C. under a nitrogen gas stream, and the mixture was reacted at the same temperature for 2 hours.
Water produced as a by-product at 120 ° C. under reduced pressure was removed to obtain a product. The obtained product was obtained by adding 3 stearoyl groups to one molecule of the polyether polyester block copolymer (K-3).
This was an introduced acylated polyether polyester block copolymer (K-7) having a number average molecular weight of 21,900.

Synthesis of acylated polyether polyester block copolymer (K-8) In the same manner as in the case of acylated polyether polyester block copolymer (K-7), acylated polyether polyester block copolymer (K-8) was obtained.

Synthesis of polyether polyester block copolymer (K-10) 490 g (1 mol) of a 40% by weight aqueous solution of gluconic acid and 28 g of potassium hydroxide were charged into an autoclave, purged with nitrogen gas, and heated to 85 ° C. And ethylene oxide 1
1000 g (250 mol) was injected under pressure to cause a reaction. 1
After an aging reaction for a long time, the catalyst was removed by an adsorbent treatment, and water was distilled off under reduced pressure to obtain a reaction product. When the obtained reaction product was analyzed, it was a polyether compound having a hydroxyl value of 31.9 and a number average molecular weight of 11,000, in which 240 mol of oxyethylene units were added to 1 mol of gluconic acid. 1100 g (0.1 mol) of the obtained polyether compound and 2.5 g of tetrabutyl titanate were charged into a flask,
The mixture was heated to 150 ° C. while stirring under a nitrogen gas stream. 1
Maintain the temperature at 40-150 ° C. and use ε-caprolactone 27
90 g (24.5 mol) were added dropwise over 20 minutes. After completion of the dropwise addition, the reaction was continued at 150 ° C. for 3 hours to complete the synthesis,
A reaction was obtained. When the obtained reaction product was analyzed, oxyethylene units / oxycaproyl units = 40/40.
(Mol%) and a number average molecular weight of 3830
0 polyether polyester block copolymer (K-
10).

Synthesis of Polyether Polyester Block Copolymer (K-11) Triethanolamine (149 g, 1 mol) and potassium hydroxide (13 g) were charged into an autoclave, purged with nitrogen gas, and heated to 120 ° C. Oxide 538
6 g (122.4 mol) were injected and reacted. After an aging reaction for one hour, the catalyst was removed by treatment with an adsorbent to obtain a reaction product. When the obtained reaction product was analyzed, 12 moles of oxyethylene units per 1 mole of triethanolamine were analyzed.
0 mol added, hydroxyl value 31.5, number average molecular weight 55
00 polyether compound. 550 g (0.1 mol) of the obtained polyether compound and 2.5 g of tetrabutyl titanate were charged into a flask, and heated to 150 ° C. while stirring under a nitrogen gas stream. 140-150 ° C
, And 1380 g of ε-caprolactone (12.
1 mol) was added dropwise over 20 minutes. After dropping, 150
The reaction was continued at a temperature of 3 ° C. for 3 hours to complete the synthesis, thereby obtaining a reaction product.
When the obtained reaction product was analyzed, it was found that the copolymerization ratio was oxyethylene unit / oxycaproyl unit = 40/40 (mol%), and it was a polyether polyester block copolymer (K-11) having a number average molecular weight of 19,200. Was.

Synthesis of polyether polyester block copolymer (K-12) 292 g (1 mol) of N, N, N ', N'-tetra (2-hydroxypropyl) -ethylenediamine and 13 g of potassium hydroxide were placed in an autoclave. After charging and purging with nitrogen gas, the mixture was heated to 120 ° C.
80 g (163.2 mol) were injected and reacted. 1
After an aging reaction for a long time, the catalyst was removed by an adsorbent treatment to obtain a reaction product. When the obtained reaction product was analyzed, N,
N, N ', N'-tetra (2-hydroxypropyl)-
It was a polyether compound having a hydroxyl value of 31.0 and a number average molecular weight of 7,500, in which 160 mol of oxyethylene units were added to 1 mol of ethylenediamine. 750 g (0.1 mol) of the obtained polyether compound and 5.2 g of tetrabutyl titanate were charged into a flask, and heated to 150 ° C. while stirring under a nitrogen gas stream. 140-15
While maintaining the temperature at 0 ° C., 1850 g of ε-caprolactone (1
6.2 mol) was added dropwise over 20 minutes. After dropping, 1
The reaction was continued at 50 ° C. for 3 hours to complete the synthesis, and a reaction product was obtained. When the obtained reaction product was analyzed, the copolymerization ratio of oxyethylene units / oxycaproyl units = 40/40 (mol%) was found to be a polyether polyester block copolymer (K-12) having a number average molecular weight of 26,100. Was. Table 2 summarizes the contents of each of the polyether polyester copolymers synthesized above.

[0094]

[Table 2]

In Table 2, the number of repetitions of the oxyalkylene unit constituting the polyether block: the number of repetitions per hydroxyl group of the aliphatic hydroxy compound EO: oxyethylene unit PO: oxypropylene unit * 1: N, N, N ', N'-tetra (2-hydroxypropyl) -ethylenediamine * 2: stearoyl group / H = 3/0 * 3: stearoyl group / H = 3/1

Test Category 3 (Preparation of aqueous solution of treating agent) Preparation of 10% by weight aqueous solution of treating agent (T-1) Polyether compound (H-1) 5 synthesized in Test Category 1
0 g and polyglycerin fatty acid ester (J-1) 50 g
Preparative mixing, after melting, to which the hot water 900g of 90 ° C. was added with vigorous stirring to a dispersion, and a homogenizer treated further at a pressure of 250 kg / cm ^2, 1 treatment agent (T-1)
A 0% by weight aqueous liquid was obtained.

Processing agents (T-2) to (T-6) and (R
Preparation of 10% by weight aqueous liquid of -1) to (R-13) Treatment agents (T-2) to (T-6) in the same manner as in the case of 10% by weight aqueous liquid of treatment agent (T-1) And (R-1) ~
A 10% by weight aqueous liquid of (R-13) was obtained.

Preparation of 10% by weight aqueous liquid of treating agent (T-7) Polyether compound (H-1) 3 synthesized in Test Category 1
0 g and polyglycerin fatty acid ester (J-1) 30 g
After mixing and melting 40 g of the polyether polyester block copolymer (K-1) synthesized in Test Category 2,
900 g of hot water at 90 ° C. was added thereto, and the mixture was vigorously stirred to form a dispersion, and further subjected to a homogenizer treatment at a pressure of 250 kg / cm ² to obtain a 10% by weight aqueous solution of the treating agent (T-7).

10 of the treating agents (T-8) to (T-18)
Preparation of aqueous solution of 10% by weight In the same manner as in the case of the aqueous solution of 10% by weight of the treating agent (T-7), aqueous solutions of 10% by weight of the treating agents (T-8) to (T-18) were obtained.

Preparation of 10% by weight aqueous liquid of treating agent (T-19) Polyether compound (H-1) 2 synthesized in Test Category 1
7 g and polyglycerin fatty acid ester (J-2) 27 g
Of polyether polyester block copolymer (K-1) synthesized in Test Category 2 and 19 g of polyoxyalkylene-modified polyorganosiloxane (L-1) and surfactant mixture (E-1) {glycerin monolaurate / Polyoxyethylene (the number of oxyethylene units is 20, n = 20) sorbitan monostearate / sodium lauryl sulfonate = 30/30 /
40 mixture is mixed} 4g (weight ratio), was melted, to which the hot water 945g of 90 ° C. was added with vigorous stirring to a dispersion, and a homogenizer treated further at a pressure of 250 kg / cm ^2, the treatment agent A 10% by weight aqueous liquid of (T-19) was obtained.

1 of the treating agents (T-20) to (T-22)
Preparation of 0 wt% aqueous liquid 10 wt% of treating agents (T-20) to (T-22) in the same manner as in the case of 10 wt% aqueous solution of treating agent (T-19)
An aqueous liquid was obtained.

Table 3 summarizes the contents of the polyglycerin fatty acid ester used for preparing the aqueous liquid of each treating agent, and Table 4 summarizes the contents of the polyoxyalkylene-modified polyorganosiloxane. In each of the prepared aqueous liquids, the contents of each treatment agent excluding water are shown in Tables 5 and 6.
Are shown together.

[0103]

[Table 3]

In Table 3, esterification ratio: ratio (mol%) of esterified hydroxyl group among all hydroxyl groups of polyglycerin

[0105]

[Table 4]

In Table 4, * 4: Content (% by weight) of polyoxyalkylene-modified group POA-1: In the polyoxyalkylene-modified group represented by R ⁴ -A ² -OR ⁵ , R ⁴ is trimethylene Group, R ⁵
But a methyl group, A ² is when the number of repetitions of the oxyethylene units is a polyoxyalkylene group of 45 polyoxyalkylene-modified group POA-2: polyoxyalkylene-modified represented by R ⁴ -A ² -O-R ⁵ R ⁴ is a trimethylene group, R ⁵
Is hydrogen, and A ² is an oxyethylene unit having a repetition number of 25
POA-3: a polyoxyalkylene group represented by R ⁴ —A ² —O—R ⁵ , wherein R ⁴ is a trimethylene group, R ⁵
Is hydrogen, and A ² is an oxyethylene unit having a repetition number of 30
And a polyoxyalkylene-modified group in which the number of repeating oxypropylene units is 20

[0107]

[Table 5]

[0108]

[Table 6]

In Tables 5 and 6, E-1: glycerin monolaurate / polyoxyethylene (15 mol) sorbitan monostearate / sodium lauryl sulfonate = 30/30 /
Surfactant mixture in a ratio of 40 (weight ratio) E-2: sodium glycerin monolaurate / polyoxyethylene (15 mol) sorbitan monostearate / polyoxyethylene (5 mol) lauryl ether sulfate sodium = 30/30 E-3: glycerin monolaurate / polyoxyethylene (15 mol) sorbitan monostearate / polyoxyethylene (8 mol) cetyl ether phosphate potassium = 30 (weight ratio) / 30 / 30/40 (weight ratio)
E-4: glycerin monolaurate / stearic acid diethanolamide / behenic acid amide propyldimethylethylammonium ethosulfate = 40/3
0/30 (weight ratio) surfactant mixture ratio: weight% ratio: weight ratio

Test Category 4 (Adhesion of processing agent to polyolefin fiber for nonwoven fabric production by dry method and evaluation thereof) Adhesion of treatment agent to polyolefin fiber for nonwoven fabric production by dry method Described in Table 5 or Table 6 A treatment bath (bath temperature 25 ° C., bath ratio 1:30) was prepared by diluting the aqueous liquid with water so that the bath concentration became the target adhesion amount. Polyolefin-based composite fiber cotton (2.0 denier × 51 mm cut length) of which part is polyester is immersed for 5 minutes, centrifugally dehydrated at a squeezing ratio of 50% by weight, and then dried.
The dried cotton was blown at 60 ° C. for 60 minutes to give the treated cotton for the following evaluation.
The amount of the treatment agent adhered to the treated cotton was measured by extracting the treated cotton with a methanol / benzene (50/50 volume ratio) mixed solvent using a Soxhlet extractor. The evaluation results and the measurement results are summarized in Tables 7 and 8.

Evaluation of scum and fry The treated cotton 2,000 g obtained above was humidified at a temperature and humidity of 25 ° C. × 60% RH for 24 hours. A card web was prepared through a single-mount type. The scum was evaluated for the fouling of Flycom according to the following evaluation criteria, and the fly was evaluated according to the following evaluation criteria by setting a black screen on the side of the small roller card. It should be noted that the smaller the scum and fly, the better the card passability and the better the operability.

Evaluation criteria for scum ◎: No scum was observed on the needle cloth ○: Scum was slightly observed on the needle cloth △: Some scum was observed on the needle cloth ×: Scum was observed on the needle cloth Deposits need to be cleaned

Evaluation criteria for fry A: No fry is recognized at all O: Fry is slightly recognized Δ: A little fry is recognized ×: A lot of fry is recognized, and cleaning is necessary

Evaluation of uniformity of formation of card web 24 g of basis weight under the same conditions as in the evaluation of scum and fly
/ M ² of card web was prepared. Using this, the uniformity of the formation of the card web was evaluated according to the following evaluation criteria. ··· Evaluation criteria for uniformity of formation of card web: No unevenness and uniformity ○: Slight unevenness observed, but no problem △: Slightly confirmed unevenness, slightly problematic ×: Wide range Spots can be clearly seen in the product, it does not become a product

Evaluation of Water Permeability A small piece of 10 cm × 10 cm was cut from the card web obtained above and heat-treated with a heater plate at 130 ° C. for 30 seconds to obtain a sample for water permeability evaluation. This sample is 20 ° C x
After humidifying for 24 hours in a constant temperature room of 60% RH, place it on a horizontal plate and use a burette to reduce the height from 10 mm to 0.4 mm.
ml of water droplet was dropped, and the time required until the water droplet was completely absorbed was measured and evaluated according to the following evaluation criteria. ··· Evaluation criteria for water permeability ：: Time required for water permeability is less than 0.5 seconds ○: Time required for water permeability is 0.5 seconds or more to less than 1 second △: Time required for water permeability is 1 second or more to 2 times Less than seconds ×: Time required for water permeation is 2 seconds or more

Evaluation of Durability / Hydrophilicity 80 ml of ion-exchanged water was sprinkled over the above-mentioned water-permeability evaluation sample and sucked and passed. The operation of performing the evaluation was repeated, and the number of repetitions until the evaluation of the water permeability became △ was obtained, and evaluated according to the following evaluation criteria. ··· Evaluation criteria for durability and hydrophilicity ◎: Number of repetitions is 15 or more ○: Number of repetitions is 10 to 14 △: Number of repetitions is 5 to 9 ×: Number of repetitions is 4 or less

Evaluation of anti-wetback property 10 cm × 10 cm from the outermost nonwoven fabric material of a commercial paper diaper
The nonwoven fabric piece was cut off, and a small piece of 10 cm × 10 cm produced in the same manner as the water permeability evaluation sample was attached to the cut portion to obtain a wet back prevention evaluation sample. The sample for evaluating wet-back prevention was placed horizontally so that the attached small piece was directed upward, and a cylinder having an inner diameter of 6 cm with both ends opened was set upright at the center of the small piece. After standing still, water was absorbed inside the disposable diaper.
Next, a stack of fifteen 10 cm × 10 cm filter papers was placed on the attached small piece, and further placed on top of it at 10 cm × 10 cm.
After placing an 8 kg weight plate and loading for 2 minutes, the total weight of the fifteen stacked filter papers was measured, and the increase rate of the weight was calculated.
Evaluation was made according to the following evaluation criteria. ··· Evaluation criteria for wet back prevention ◎: Weight increase rate is less than 1% ○: Weight increase rate is 1% or more and less than 1.3% △: Weight increase rate is 1.3% or more and less than 2% ×: Weight increase The rate is 2% or more

[0118]

[Table 7]

[0119]

[Table 8]

In Tables 7 and 8, the attached amount: the attached amount of the treating agent to the polyolefin-based conjugate fiber (% by weight)

[0121]

As is apparent from the above description, the present invention described above provides polyolefin fibers for nonwoven fabric production by a dry process with excellent card passing properties by suppressing the occurrence of scum and fly in the web production process. In addition, there is an effect that excellent uniformity of formation, water permeability, durable hydrophilicity and wet back prevention can be imparted to the card web obtained at the same time.

Continued on the front page F term (reference) 4L033 AA05 AB01 AB07 AC07 AC15 BA12 BA21 CA48 4L047 AA14 AA21 AA27 AB02 BA09 BB09 CB07 CB10 CC04

Claims (14)

[Claims] An agent for treating a polyolefin-based fiber for producing a nonwoven fabric by a dry method, comprising a polyether compound represented by the following formula 1 and a polyglycerin fatty acid ester described below. [Formula 1] R ¹ -A ¹ -O-R ² (In the formula 1, R ^{1 is} an alkyl group having 28 to 60 carbon atoms or 28 to 60 carbon atoms.
60 alkanoyl groups R ² : hydrogen, alkyl group having 1 to 4 carbon atoms or 1 to 2 carbon atoms
4 alkanoyl group A ¹ : a polyoxyalkylene group composed of repeating oxyalkylene units having 2 or 3 carbon atoms, wherein the number of repeating oxyalkylene units is 5 to 100 and A polyoxyalkylene group having an ethylene unit of 50 mol% or more) polyglycerin fatty acid ester: a polyglycerin fatty acid ester obtained by subjecting polyglycerin to an esterification reaction with a fatty acid and / or an ester-forming compound of a fatty acid, Wherein the fatty acid is an aliphatic monocarboxylic acid having 6 to 24 carbon atoms, and the ester-forming compound of the fatty acid has 6 to 24 carbon atoms.
Polyglycerol fatty acid esters which are ester-forming compounds of aliphatic monocarboxylic acids Wherein the polyether compound is an alkyl group of R ¹ is 30 to 40 carbon atoms in the formula 1, for nonwoven production by a dry method in which claim 1 wherein one of R ² is hydrogen A treatment agent for polyolefin fibers. 3. A polyglycerol fatty acid ester comprising a polyglycerol having a condensation degree of 3 to 12 and a saturated aliphatic monocarboxylic acid having 12 to 22 carbon atoms and / or a lower alkyl saturated aliphatic monocarboxylic acid having 12 to 22 carbon atoms. The ester is reacted with an ester to form a hydroxyl group of the polyglycerin of 10 to 10.
3. The composition according to claim 1, wherein 85 mol% is esterified.
A treating agent for a polyolefin fiber for producing a nonwoven fabric according to the dry method described above. 4. The polyolefin-based fiber treating agent for nonwoven fabric production according to claim 1, further comprising the following polyether polyester block copolymer. Polyether polyester block copolymer: 1
A ring-opening polymerization of an alkylene oxide having 2 to 4 carbon atoms and ε-caprolactone to a hexavalent aliphatic hydroxy compound, respectively, to form a polyoxyalkylene group and an oxycaproyl unit composed of repeating oxyalkylene units in the molecule. A polyether polyester block copolymer formed with a polyester group composed of repeating units, wherein the polyoxyalkylene group has 5 to 200 mol of oxyalkylene units per hydroxyl group of the aliphatic hydroxy compound. It has at least 40 mol% of oxyethylene units as the oxyalkylene units, and has a ratio of the total number of repeating oxycaproyl units / the total number of repeating oxyalkylene units = 1/1 to 1/10 (molar ratio). Polyether polyester block copolymer having 5. A polyether polyester block copolymer as a monovalent to hexavalent aliphatic hydroxy compound,
An aliphatic alcohol of from 6 to 6 or a polyhydric alcohol partial ester of an aliphatic alcohol of from 2 to 6 with an aliphatic monocarboxylic acid having from 6 to 18 carbon atoms.
A treating agent for a polyolefin fiber for producing a nonwoven fabric according to the dry method described above. 6. A polyether polyester block copolymer, in which a polyether block is formed by ring-opening polymerization of an alkylene oxide to a monovalent to hexavalent aliphatic hydroxy compound, and ε-terminal is added to a terminal hydroxyl group of the polyether block. The agent for treating a polyolefin-based fiber for producing a nonwoven fabric according to claim 4 or 5, wherein the polyester block is formed by ring-opening polymerization of caprolactone. 7. An acylated polyether obtained by reacting an acylating agent having 2 to 22 carbon atoms with a terminal hydroxyl group of a polyester block of the polyether polyester block copolymer together with or instead of the polyether polyester block copolymer. The agent for treating a polyolefin-based fiber for producing a nonwoven fabric by the dry method according to claim 6, wherein an ether polyester block copolymer is used. 8. A polyoxyalkylene group having from 5 to 38.
4. The composition according to claim 1, which comprises a polyoxyalkylene-modified polyorganosiloxane having a percentage by weight.
A treating agent for polyolefin fibers for producing nonwoven fabric by the dry method according to 4, 5, 6, or 7. 9. The polyoxyalkylene-modified polyorganosiloxane is represented by the following formula (2).
A treating agent for a polyolefin fiber for producing a nonwoven fabric according to the dry method described above. (Equation 2) に お い て In the formula 2, Y ¹ , Y ² , Y ³ : a methyl group or a polyoxyalkylene-modified group represented by R ⁴ —A ² —O—R ⁵ , at least one of which is the polyoxyalkylene-modified group (R ⁴ :
An alkylene group having 2 to 5 carbon atoms, R ⁵ : hydrogen or carbon 1
12 alkyl group, A ^2: a polyoxyalkylene group composed of repeating oxyalkylene units having 2 or 3 carbon atoms, the number of repetitions of the oxyalkylene units is 10 to 100 and the oxyalkylene units polyoxyalkylene group) R ³ having oxyethylene units at least 50 mol%: alkyl group or a phenyl group p of 2 to 5 carbon atoms, q: p is 7-150, an integer of q is 0 to 20, And an integer satisfying 7 ≦ p + q ≦ 150 r: an integer of 0 to 10｝ 10. A polyoxyalkylene-modified polyorganosiloxane, wherein Y ¹ and Y ^{2 in} Formula ² are methyl groups,
Y ³ is a polyoxyalkylene-modified group, and R ⁴ in the polyoxyalkylene-modified group is a trimethylene group,
Treatment agent of the polyolefin fibers for nonwoven production by a dry method in which claim 9, wherein for the case wherein R ⁵ is hydrogen or methyl. 11. The method according to claim 1, wherein the polyether compound / polyglycerin fatty acid ester is contained in a ratio of 20/80 to 90/10 (weight ratio).
The agent for treating a polyolefin fiber for producing a nonwoven fabric by the dry method according to 8, 9, or 10. 12. Total amount of polyether compound and polyglycerin fatty acid ester / polyether polyester block copolymer = 40/60 to 90/10 (weight ratio)
Claims 4, 5, 6, 7, 8, 9, 10
Or an agent for treating a polyolefin fiber for producing a nonwoven fabric by the dry method according to item 11. 13. A composition containing the polyether compound, the polyglycerol fatty acid ester and the polyether polyester block copolymer in a ratio of (total amount of polyoxyalkylene-modified polyorganosiloxane) / 40/60 to 95/5 (weight ratio). Claim 8, 9, 10, 11, 12 or 13
A treating agent for a polyolefin fiber for producing a nonwoven fabric according to the dry method described above. 14. The method of claim 1, 2, 3, 4, 5, 6, 7,
The treating agent described in 8, 9, 10, 11, 12 or 13 is added to the polyolefin-based fiber for nonwoven fabric production by a dry method in an amount of 0.
A method for treating a polyolefin-based fiber for producing a nonwoven fabric by a dry method, wherein the fiber is attached in an amount of from 0.5 to 5% by weight.