JPH0770934A - Fiber paste composition - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a fiber paste composition which is excellent in the effect of preventing the adhesion of fibers to each other, and is also excellent in the adhesiveness to fibers, the binding force, the prevention of fluff and yarn breakage, and the weaving property. thing. [Structure] Saponification degree of 40 mol% or more, average degree of polymerization of 300
~ 2000 polyvinyl alcohol resin and 6 carbon atoms
The hydroxy fatty acid or the derivative thereof is contained, and the hydroxy fatty acid having 6 or more carbon atoms or the derivative thereof is 0.1 to 100 parts by weight of the polyvinyl alcohol resin.
1 to 20 parts by weight is blended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber sizing agent composition using polyvinyl alcohol (hereinafter abbreviated as PVA), and more specifically, a P paste having improved adhesiveness between fibers.
It relates to a VA-based fiber paste composition.

[0002]

2. Description of the Related Art Conventionally, as a warp sizing agent used in the production of long-fiber woven fabrics, polyvinyl alcohol or modified polyvinyl alcohol has been mainly used, and an oil agent or an auxiliary agent is appropriately added thereto or an acrylic copolymer. Aqueous solutions containing starch and starch are widely used in practice. However, such conventional fiber sizing agents often have insufficient adhesiveness, cannot completely prevent falling glue and fluffing, have low binding force, and have poor weavability. It was In order to solve such a drawback, the present applicant has a method of blending PVA with a saccharide (JP-A-52-81191) and a method of blending a low-saponifiable PVA with an anionic surfactant (JP-A-53-86890). Japanese Unexamined Patent Application Publication No. 54-16088), a method in which PVA that does not develop a cloud point is used in combination (JP-A-54-16088
No. 2) and a method using sulfonic acid-modified PVA and an organic acid alkali metal salt (Japanese Patent Application Laid-Open No. 54-160883).

[0003]

However, with the recent improvement in the performance of the loom, the demands in the market have become more severe, and further improvement in adhesiveness and stickiness has been especially desired.

[0004]

The inventors of the present invention have conducted extensive studies to solve such problems, and as a result, have found that PVA having a saponification degree of 40 mol% or more and an average polymerization degree of 300 to 2000.
A resin containing a hydroxy fatty acid having 6 or more carbon atoms or a derivative thereof, and 0.1 to 20 parts by weight of the hydroxy fatty acid having 6 or more carbon atoms or a derivative thereof is mixed with 100 parts by weight of the PVA resin. The fiber paste composition
The present invention has been completed by finding that it is excellent in the effect of preventing the fibers from sticking to each other and sufficiently satisfies the performance required for the fiber sizing agent, such as the adhesiveness to the fibers, the binding force, the prevention of fluff and yarn breakage, and the weaving property. Came to do. Hereinafter, the present invention will be described in detail.

The PVA resin of the present invention is usually produced by a known method. Such PVA-based resin means not only a saponified product of polyvinyl acetate but also a monomer copolymerizable with a vinyl ester, for example, olefins such as ethylene, prepylene, isobutylene, α-octene, α-dodecene, α-octadecene. Unsaturated acids such as acrylic acid, methacrylic acid, crotonic acid, maleic acid, maleic anhydride, itaconic acid or salts thereof or mono- or dialkyl esters, acrylonitrile, nitriles such as methacrylonitrile, acrylamide, methacrylamide, etc. Amides, olefin sulfonic acids such as ethylene sulfonic acid, allyl sulfonic acid and methallyl sulfonic acid or salts thereof, alkyl vinyl ethers, N-acrylamidomethyltrimethylammonium chloride, allyltrimethylammonium chloride, dimethyi Diallyl vinyl ketone, N-vinyl pyrrolidone, vinyl chloride, vinylidene chloride, polyoxyethylene (meth) allyl ether,
Polyoxyalkylene (meth) allyl ether such as polyoxypropylene (meth) allyl ether, polyoxyethylene (meth) acrylate, polyoxyalkylene (meth) acrylate such as polyoxypropylene (meth) acrylate, polyoxyethylene (meth) Polyoxyalkylene (meth) acrylamides such as acrylamide, polyoxypropylene (meth) acrylamide,
Polyoxyethylene (1- (meth) acrylamide-
1,1-dimethylpropyl) ester, polyoxyethylene vinyl ether, polyoxypropylene vinyl ether, polyoxyethylene allylamine, polyoxypropylene allylamine, polyoxyethylene vinylamine, polyoxypropylene vinylamine, etc. However, the present invention is not limited to this. The PVA-based resin may be used alone or in combination of two or more.

However, in the present invention, it is essential that the PVA has a saponification degree of 40 mol% and an average degree of polymerization of 300 to 2000, and if the saponification degree is less than 40 mol%, the tackiness of the sizing yarn becomes large. If the average degree of polymerization is less than 300, the strength of the sizing agent forming film will be weak,
If the amount of sizing agent exceeds 2,000, the viscosity of the sizing agent will increase and sizing cannot be performed. The average degree of polymerization is a value calculated from the intrinsic viscosity of an aqueous solution after completely saponifying the remaining acetic acid groups.

The hydroxy fatty acid having 6 or more carbon atoms in the present invention means 2-oxy-2-methylpentanoic acid, 2-oxy-5-methylhexanoic acid, 3-oxy-
2-methylpentanoic acid, 11-oxytetradecanoic acid,
11-oxyhexadecanoic acid, 14-oxyhexadecanoic acid, 12-oxidedecanoic acid, 16-oxyhexadecanoic acid, 12-oxyoctadecanoic acid, 9-oxyoctadecanoic acid, 22-oxidecosanoic acid and their alkali salts, esterified products, etc. And particularly 12-oxyoctadecanoic acid is practical. The hydroxy fatty acid having 5 or less carbon atoms cannot exert the effect of the present invention.
The hydroxy fatty acid is mixed in an amount of 0.1 to 20 parts by weight, preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the PVA resin. If the mixing amount is less than 0.1 part by weight, the effect of the present invention cannot be exhibited, and if the mixing amount exceeds 20 parts by weight, the binding force is reduced and the weaving efficiency is poor.

As a method for blending the PVA-based resin and the hydroxy fatty acid having 6 or more carbon atoms to obtain the resin composition of the present invention, a well-known method is generally used, that is, a melting can with an agitator, an extruder, a roll. It is melted and mixed by a kneader or the like. The order of blending is not particularly limited, and two kinds of resins may be blended at the same time, or one resin may be blended with the other resin. The melt mixing temperature is preferably about 120 to 180 ° C. In preparation of the paste solution, in addition to the above PVA and hydroxy fatty acids, other paste agents such as acrylic paste agent, starch,
Even if a polymer such as modified starch and carboxymethyl cellulose and various oil agents are used in combination, the above effect is not changed, and the effect may be further increased depending on the case.

Especially, it is important to use it together with an acrylic sizing agent, and by using this together, an extremely excellent fiber sizing agent can be obtained.
Acrylic paste is an alkaline substance that neutralizes copolymers of hydrophobic monomers mainly composed of acrylic acid esters and methacrylic acid esters with ethylenically unsaturated carboxylic acids such as acrylic acid and methacrylic acid and sulfonic acids. To be water-soluble or water-dispersible. When used in combination with an acrylic sizing agent, it is most appropriate to select the compounding ratio so that the weight ratio of the PVA and the acrylic sizing agent is within the range of 95: 5 to 60:40. When the ratio of the above is too small, it is difficult to expect a synergistic effect due to the combined use.On the other hand, when the ratio of the acrylic sizing agent is too large, the adhesiveness of the sizing yarn becomes high, and the fallen glue gums up on the loom.
Further, warp threads are stuck by the warp beam, the open state is deteriorated, and the cost is disadvantageous.

Further, known agents such as smoothing agents for warp sizing, softening agents, penetrating agents, antistatic agents, antifoaming agents, and other oil agents and auxiliary agents may be used in appropriate amounts together. The resin content concentration in the paste solution is usually controlled to 2 to 13% by weight. The sizing liquid thus prepared is used for sizing filament yarns, woolly processed yarns, spun yarns, etc., but it can be used not only as a warp sizing agent but also as a finishing agent for fiber products.

[0011]

[Working] The fiber sizing agent composition of the present invention contains a specific hydroxy fatty acid in a PVA-based resin, so that the fiber has adhesiveness, tying power, prevention of fluff and yarn breakage, and weaving properties. It has the general performance of a sizing agent and is excellent in the effect of preventing the adhesion of fibers to each other, which is very useful.

[0012]

EXAMPLES The present invention will be specifically described below with reference to Examples.
In the examples, “part” and “%” are based on weight unless otherwise specified. Example 1 (Composition of paste solution) 100 parts of PVA having a saponification degree of 75 mol% and an average degree of polymerization of 500 100 parts of 12-oxyoctadecanoic acid 2 parts of an acrylic paste agent 500 parts (plus size 780, manufactured by Kyouka Chemical Industry Co., Ltd., Acrylic ester copolymer sodium salt, 30% solution) -Oil agent 20 parts (Citex T-190, manufactured by Kyowa Chemical Industry Co., Ltd., containing wax and nonionic activator, 30% solution) -Water 2000 parts

(Adhesion conditions) Target yarn Polyester filament yarn (75 denier / 36 filaments, untwisted) Adhesive machine Tsuda Koma Co., Ltd. KS-J type warping slasher Adhesive conditions Squeezing load 180-260 kg Paste liquid temperature 50 ° C Drying temperature Chamber 120 ° C × 2 Cylinder 100 ° C × 2 Winding speed 95m / min Adhesion amount 12.1%

(Weaving conditions) The woven fabric is taffeta, the total number of warp threads is 4,600, the weaving width is 38 inches, the warp density is 118 threads / inch, the weft density is 90 threads / inch, and the loom is an automatic loom 160.
With rpm, glue 50m to 1 to 40 threads,
Woven The adhesiveness, stickiness, smoothness, clinging power, occurrence of fluff and yarn breakage, and weaving efficiency were investigated. The evaluation results are shown in Table 3. The evaluation method is as follows.

Adhesiveness Separately, a sizing agent having a thickness of 10 μm is formed on a Tetoron film, and 2
After standing at 5 ° C. and 75% RH for 1 week, the peel strength between the glue film / Tetron film layer was measured. Tensile speed is 40mm
/ Min ・ Stickiness Only one sizing thread after sizing is wound on a bobbin, 25 ℃, 8
After leaving at 5% RH for 1 week, the glued yarn is released from the bobbin under the conditions of 20 ° C and 65% RH (speed 10m / min).
The resistance (g) at that time was measured.・ Cohesion force When the sizing thread after sizing is rubbed at a load of 100 g / 10 with an angle of 145 ° using a TM-type sizing degree tester (made by Matsui Seiki), the average number of times of rubbing until the filament loses its focusing is determined. It was measured. Occurrence of fluff and yarn breakage The fluff during weaving (single yarn breakage) and the number of times the loom was stopped due to yarn breakage (turns / brakes) were measured. -Weaving efficiency The ratio of the target weaving time based on the number of revolutions of the loom and the weft driving density during weaving and the actual weaving time was expressed in%.

Examples 2 to 5 and Comparative Examples 1 to 6 Using the sizing liquids shown in Tables 1 and 2 in the same manner as in Example 1
Weaving was performed and the same evaluation was performed. The evaluation results are shown in Table 3.

TABLE 1 P V A hydroxy fatty acids SV (mol%) P amount (parts) Compound name Amount (parts) Example 1 75 500 100 12 Okishiokutate Bu cans acid 2 〃 2 78 undefined undefined undefined 0.5 〃 3 70 〃 〃 〃 3 〃 4 82 〃 〃 〃 2 〃 5 75 75 1500 〃 〃 2 Comparative Example 175 500 100-100 〃 2 〃 2 75 〃 〃 12-Oxy octadecanoic acid 75 100 〃 12-oxyoctadecanoic acid 2 〃 5 75 3,000 〃 〃 2 〃 6 30 500 〃 〃 2 Note) SV: saponification degree, P: average degree of polymerization

[0017]

[Table 2] Acrylic paste * Oil * Water compounding amount (part) compounding amount (part) compounding amount (part) Example 1 100 10 2000 〃 2 〃 〃 〃 〃 3 〃 〃 〃 〃 〃 〃 〃 5 undefined undefined undefined Comparative example 1 500 20 2000 〃 2 undefined undefined undefined undefined 3 undefined undefined undefined undefined 4 undefined undefined undefined undefined 5 undefined undefined undefined undefined 6 undefined undefined undefined * acrylic sizing agent and oil has active ingredients, respectively 20% and Contains 30%

[0018]

[Table 3] Adhesion Adhesion amount Tackiness Cohesion force Occurrence of fluff and yarn breakage Weaving efficiency (g / cm) (%) (g) (times) (times / groove) (%) Example 1 150 12.10.1 8 30 0.1 93 〃 2 130 12.3 1.0 30 30 0.8 88 〃 3 140 11.9 0.7 35 35 0.1 92 〃 4 100 11.8 0.6 30 30 0.9 85 〃 5 160 13.6 1.0 35 0.1 0.1 90 Comparative Example 1 160 12.2 2.0 30 1.3 80 〃 2 50 11.2 0.3 15 15 0.7 78 78 〃 3 150 12.4 2.5 30 1.4 80 〃 4 100 10.8 1.8 10 10 1.7 80 〃 5 150 High viscosity and cannot be glued --- 6 6 190 13.1 2.5 35 35

[0019]

EFFECTS OF THE INVENTION The fiber sizing agent composition of the present invention, which contains a specific hydroxy fatty acid in a PVA-based resin, has the following properties: adhesion to fibers, tie strength, prevention of fluff and yarn breakage, and weaving properties. It has the general performance of a fiber sizing agent and is excellent in the effect of preventing the adhesion of fibers to each other, which is very useful.

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

[Procedure amendment]

[Submission date] November 11, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

(Weaving conditions) The woven fabric is taffeta, the total number of warp threads is 4,600, the weaving width is 38 inches, the warp density is 118 threads / inch, the weft density is 90 threads / inch, and the loom is an automatic loom 160.
With rpm, glue 50m to 1 to 40 threads,
Woven The adhesiveness, stickiness, tying force, occurrence of fluff and yarn breakage, and weaving efficiency were investigated. The evaluation results are shown in Table 3.
The evaluation method is as follows.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

Adhesiveness Separately, a sizing agent having a thickness of 10 μm is formed on a Tetoron film, and 2
After standing at 5 ° C. and 75% RH for 1 week, the peel strength between the glue film / Tetron film layer was measured. Tensile speed is 40mm
/ Min ・ Stickiness Only one sizing thread after sizing is wound on a bobbin, 25 ℃, 8
After leaving at 5% RH for 1 week, the glued yarn is released from the bobbin under the conditions of 20 ° C and 65% RH (speed 10m / min).
The resistance (g) at that time was measured.・ Cohesion strength The average number of times of rubbing of the sizing yarn after sizing after the sizing is rubbed at a load of 100g / 10 and an angle of 145 ° using a TM-type sizing degree tester (Matsui Seiki) It was measured. Occurrence of fluff and yarn breakage The fluff during weaving (single yarn breakage) and the number of times the loom was stopped due to yarn breakage (turns / brakes) were measured. -Weaving efficiency The ratio of the target weaving time based on the number of revolutions of the loom and the weft driving density during weaving and the actual weaving time was expressed in%.

Claims (1)

[Claims] 1. A saponification degree of 40 mol% or more and an average degree of polymerization of 3
A polyvinyl alcohol-based resin having a carbon number of 0 to 2000 and a hydroxy fatty acid having 6 or more carbon atoms or a derivative thereof are contained, and a hydroxy fatty acid having a carbon number of 6 or more or a derivative thereof is 0.1 to 100 parts by weight of the polyvinyl alcohol resin. 20 parts by weight of a fiber sizing agent composition.