JPS5933709B2 - Textile glue composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber sizing composition having excellent sizing properties.

Conventional warp sizing agents include starch, polyvinyl alcohol, acrylic polymers, vinyl acetate-maleic anhydride copolymers, styrene-mannic anhydride copolymers, etc., but polyester, nylon, polypropylene, polyacrylonitrile, etc. However, compositions with improved adhesion properties have disadvantages in that they lack adhesion to hydrophobic synthetic fibers, resulting in insufficient binding power, and compositions with improved adhesion properties have poor opening properties during weaving.

However, through many years of research, the present applicant has found that
A partially saponified maleic acid monoalkyl ester-vinyl acetate copolymer with a maleic acid monoalkyl ester content of 01 to 10 moles and a saponified vinyl acetate unit of 60 to 80 moles is also suitable for hydrophobic synthetic fibers. It has good adhesive strength and does not increase hygroscopicity or stickiness, so it has excellent binding strength, and is also extremely excellent in terms of openness during weaving, reduced thread breakage, and complete desizing. However, as a result of a long series of on-site tests, we found that although in most cases the problems we encountered did not occur, there were occasional cases in which the amount of size removed could not be ignored, especially with processed polyester yarns.

Dropping seems to occur due to a special combination of various conditions such as the polyester processed yarn (J) processing conditions, the type and amount of yarn oil attached, but in any case, no matter what history of warp yarn is used, the problem will not occur. It goes without saying that it is desirable to develop a fiber sizing agent that does not cause this phenomenon.

However, as a result of intensive research by the present inventors to solve this problem, we found that when blending two types of partially saponified maleic acid monoalkyl ester-vinyl acetate copolymer with different viscosities, The present invention was completed based on the discovery that it is possible to effectively prevent warp yarns from falling regardless of their warp type and history, and to obtain excellent results in terms of adhesion, binding force, and weavability.

That is, the fiber glue composition of the present invention has resin a and resin co-containing maleic acid monoalkyl ester content of 0.1 to 10 mol and 60 to 80 mol of vinyl acetate units saponified. A saponified acid monoalkyl ester-vinyl acetate copolymer, 8 at a temperature of 50°C of resin a and resin
% aqueous solution viscosity (cps) ηa, ηb and their ratio ηa/
Resin a and resin so that ηb satisfies the relationship ηa≧45 ηb≦30 ηa/ηb215-20 are 10 to 10% by weight
They are contained in a ratio of 90:90 to 10.

By using such a mixture of resin a and resin sinter, a much better anti-slip property can be achieved than when using resin a alone or resin sinter alone.

Examples of the monoalkyl maleate component of the partially saponified monoalkyl maleate-vinyl acetate copolymer in the present invention include monomethyl maleate, monoethyl maleate, monopropyl maleate, and monobutyl maleate.

The content of maleic acid monoalkyl ester in the polymer needs to be in the range of 0.1 to 10 mol, and when the content is less than 0.1 mol, the adhesion to hydrophobic synthetic fibers The conjugation property is insufficient, while the content is 1.
When the molar ratio exceeds 0, hygroscopicity and stickiness increase, and conjugation property decreases.

Other non-B' monoalkyl carboxylic acids other than maleic acid monoalkyl esters, such as acrylic acid, methacrylic acid, crotonic acid, etc., or partially saponified products of copolymers of these alkyl esters and vinyl acetate have properties as adhesives. is far below that obtained when maleic acid monoalkyl ester is used as a copolymerization component.

Of course, when maleic acid dialkyl ester, maleic anhydride, or free malefinic acid is used as a copolymerization monomer, it is finally converted into a monoalkyl ester form by copolymerization with vinyl acetate or saponification in alcohol. If so, it is within the scope of the present invention.

The degree of T-tonation of vinyl acetate units in the polymer should be adjusted to a range of 60 to 80 moles; if the degree of saponification is smaller than this range, desizing properties will be poor; if it is thicker than this range, Poor adhesion to fibers.

Since saponification is usually carried out using an alkali catalyst, the maleic acid monoalkyl ester unit in the polymer has the following formula (where R is an alkyl group and M is an alkali metal such as sodium or potassium or NH4) < (1) such (2 ), but in the present invention, either embodiment (1) or (2) may be used.

Even if a partially saponified maleic acid monoalkyl ester-vinyl acetate copolymer having the above-mentioned composition can be obtained, the aqueous solution viscosity will differ depending on the degree of polymerization and degree of branching.

In the present invention, a resin a selected from resins having the above composition is used.
and resin, such that the viscosity (cps) ηa, ηb and the ratio ηa/ηb of an 8% aqueous solution at a temperature of 50°C satisfy the following relationships: ηa≧45 ηb≦30 ηa/ηb=1°5-20 resin is used.

Resin a has a high viscosity, and the viscosity ηa of its 8% aqueous solution at a temperature of 50°C must be 45 cps or more, and if it is ungrooved at 45 cps, it will not synergize even when mixed with a lower viscosity resin. The effect cannot be expected.

Note that a particularly preferable range is 50 to 300 cps,
If the viscosity is too high, there will be restrictions on the smoothness of gluing.

On the other hand, the resin has a low viscosity, and the viscosity ηb of an 8% aqueous solution at a temperature of 50°C must be 30 cps or less, and if it exceeds 30 cps, it can be mixed with the higher viscosity resin Synergistic effects cannot be expected.

Note that a particularly preferable range is 5 to 25 cps, and if the viscosity is too low, there will be restrictions in terms of conjugation ability and amount of falling motion.

In addition, the viscosity ηa of resin a and the viscosity ηb of resin a are not only within the above range, but also have a ratio ηa/ηb of 1.5 to 20.
is required to be within the range of

When ηa/ηb is less than 15, that is, when ηa and ηb are too close to each other, the same effect as when using resin a alone or resin s alone can be obtained; on the other hand, when ηa
When /ηb exceeds 20, that is, when there is an extreme difference in viscosity O, the smoothness of gluing tends to be impaired.

Next, resin a and resin soot are 10 to 90:90 to 10 by weight.
When the ratio is outside this range, the performance of the glue is not much different from that when each is used alone.

A paste solution is prepared by dissolving the resin a and the resin solution described above in water.

The resin content concentration in the size liquid is usually set in a range of about 3.5 to 11 parts by weight.

Note that known additives such as antifoaming agents and various oils may be added to the size liquid as necessary.

The sizing composition of the present invention is used for sizing the warp yarns of filament yarn, woolly processed yarn, spun yarn, etc., but it effectively prevents falling, regardless of the type of warp yarn or the adhesion status of raw yarn oil. This will greatly contribute to the industry.

Next, the composition of the present invention will be further explained by giving examples.

1% or less" indicates the weight ratio unless otherwise specified.

Example 1 Sizing, weaving, and desizing of eight types of polyester processed yarns from various companies were carried out using a sizing composition having the following composition.

The results are shown in Table 1.

Resin a Partially saponified monomethyl maleate-vinyl acetate copolymer with a monomethyl maleate content of 0.7 mol and vinyl acetate units of 70.3 mol. Viscosity of an 8% aqueous solution at 50°C () 3o .

Partially saponified monomethyl maleate-vinyl acetate copolymer with a monomethyl maleate content of 0.4 mol and a vinyl acetate unit of 69.5 mol. 8% at 0°C Viscosity of aqueous solution ('') 5.5% Degree ηb = 9.8 cps Oil agent 0.3% Smoothing agent 0.2 Water retention
The remainder (ηa/ηb=6.1).

) Yarn subject to sizing conditions Polyester woolly processed yarn (75 denier/36 flyment, non-twisted) Sizing machine Tsudakoma KS-J type warping slatsher Sizing conditions Number of frames 1050 drawings Full load 180-260 Sizing liquid temperature: 50℃ Drying temperature: Chamber: 120'C Book, Orijo Junior High School 37
5 inches, weft density 107 threads/inch.

The loom is an automatic loom i6orpm, with 50m as one thread.
Weaved 0 stitches.

Descaling conditions 2 Bath ratio 1/30 in a scouring solution containing g/l of soda carbonate and 2 g/l of detergent (Monogen, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.)
~1150℃, treated at a temperature of 90-95°C for 30-60 minutes, and then washed with water.

Comparative Example 1 A size solution was prepared in the same manner as in Example 1 except that 5.7% of resin a was used and the use of resin was omitted, and the following sizing and weaving were performed.

Comparative Example 2 A size solution was prepared in the same manner as in Example 1 except that 10.5% of resin A was used and resin a was omitted, and the following sizing and weaving were performed.

Comparative Example 3 Conventionally known sizing agent for Tetron (polymerization degree 500, saponification degree 8)
8 molar polyvinyl alcohol and ethyl acrylate
Methyl methacrylate-methacrylic acid (50:35:15
Example 1 except that the copolymer soda salt (weight ratio) was mixed at a ratio of 5:5 by weight, and a glue containing an oil agent was used.
When pasting and weaving are carried out in the same manner as above.

As is clear from Table 1, when the size composition of the present invention is used, extremely good results can be obtained regardless of the type of polyester processed yarn.

This means that there is no need to change the size liquid composition each time depending on the type of warp, and shows that it is extremely practical.

Example 2 Resin a is a partially saponified monomethyl maleate-vinyl acetate copolymer with a monomethyl maleate content of 0.5 mol and a vinyl acetate unit of 69.5 mol.
Viscosity of 8% aqueous solution at 0°C ηa Near 0 cps
Partially saponified product of monomethyl maleate-vinyl acetate copolymer in which 4.2% of monomethyl manate (based on resin) and 71.4 moles of vinyl units are saponified. A size solution was prepared in the same manner as in Example 1 except that 4.2% of 8% aqueous solution (viscosity ηb = 10.3 cps at 50° C.) was used, and then sizing and weaving were performed.

Note that ηa/ηb2 is 6.8.

Example 3 Partially saponified monoisobutyl maleate-vinyl acetate copolymer with a monoisobutyl maleate content of 0.7 mol and 72.0 mol of vinyl acetate units as resin a (8% at 50°C) Viscosity of aqueous solution ηa262
cps) is 4.2%, the monomethyl maleate content is 0.5 mol, and the vinyl acetate unit is 71.
Example 1 except that a partially saponified monomethyl maleate-vinyl acetate copolymer (viscosity of an 8% aqueous solution at 50°C, ηb = 10.3 cps) was used in Example 1. A size solution was prepared in the same manner as above, and the following steps were performed: pasting and weaving.

Note that ηa/ηb = 6.0. The results are shown in Table 2.

Claims (1)

[Scope of Claims] 1. Resin a and resin sugamo ζ Maleic acid monoalkyl ester having a content of 01 to 1.0 mol and in which 60 to 80 mol of vinyl acetate units have been saponified. - Partially saponified vinyl acetate copolymer, the temperature of resin a and resin 50
Resin a and resin so that the viscosity (eps) ηa, ηb and the ratio ηa/ηb of an aqueous solution at °C satisfy the following relationships: ηa≧45 ηb≦30 ηa/ηb=15-20 by weight 10~
A fiber glue composition containing the fiber paste composition in a ratio of 90:90:10. 2. The composition according to claim 1, wherein the maleic acid monoalkyl ester is monomethyl maleate.