JPH06256671A - Water-base dispersion of synthetic resin powder - Google Patents

Abstract

PURPOSE:To prevent the permeation of a resin into a padding and the clogging of a screen and improve the hand, dot shape, adhesion to a surface fabric, resistance to cleaning, etc., of the padding by compounding a water-sol. temp.- sensitive CONSTITUTION:A water-base dispersion of an adhesive for a bonded padding having a viscosity at 25 deg.C of 500-50,000cP is obtd. by compounding 15-50 pts.wt. at least one kind of thermally bondable synthetic resin powder selected from the group consisting of a polyamine, a polyester, polyethylene, and an ethylene- vinyl acetate copolymer, 0.5-10 pts.wt. tackifier, 1-30 pts.wt. emulsifying and dispersing agent, 0.0001-30 pts.wt. water-sol. temp. -sensitive gelling agent which is a vinylic copolymer contg., as structural units, 50wt.% or higher (meth)acrylic ester of a 1-20mol ethylene oxide and/or propylene oxide adduct to (a substd.) morpholine (i.e., a vinylic carboxylic ester of an alkylene oxide adduct to an active hydrogen compd. having a nitrogen-contg. ring). and 20-90 pts.wt. water.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an aqueous dispersion of synthetic resin. More specifically, it relates to a synthetic resin powder aqueous dispersion suitable as an adhesive for an adhesive interlining, which is applied to an interlining for clothes through a screen in a dot shape and heat-adhered.

[0002]

2. Description of the Related Art Conventionally, an aqueous dispersion of synthetic resin for adhesive interlining has been proposed which comprises a heat-adhesive synthetic resin powder, a viscosity-imparting agent, an emulsifying dispersant and polyethylene oxide (for example, JP-B-60-). 11985 publication).

[0003]

In recent years, in order to improve the texture of clothes, the interlining has also been required to have high flexibility. However, when the conventional synthetic resin aqueous dispersion is used as a thermal adhesive for interlining, it has a drawback that it penetrates into the fiber during coating and drying on the fiber, and thus the texture becomes coarse and hard. Further, if the viscosity is increased to such an extent that it does not penetrate into the fiber during drying, printability becomes poor and uniform coating cannot be performed.

[0004]

Means for Solving the Problems As a result of intensive investigations by the present inventors to solve these problems, the use of a water-soluble vinyl polymer as a temperature-sensitive gelling agent impairs printability. However, we found that the texture can be softened by suppressing the penetration into the fiber during drying.
The present invention has been reached.

That is, in the present invention, the heat-adhesive synthetic resin powder (A), the viscosity imparting agent (B), the emulsifying dispersant (C) and the water-soluble temperature-sensitive gelling agent (D) are dispersed in an aqueous dispersion. Which is an aqueous dispersion of synthetic resin powder.

In the present invention, the heat-adhesive synthetic resin powder (A) is not particularly limited as long as it is a powder of a thermoplastic resin which is water-insoluble and has a hot-melt adhesive property (hot melt, heat sealability). Even adhesive type
A permanent adhesive type may also be used. Specific examples of these include nylon 6, 66, 610, 612, 11, 12,
Copolymerized polyamide made by combining polyamide structural units such as 6I and 6T (nylon 6/66, 6/66/1
2, 6/12/610, 6 / 6T / 12, etc.), polyester (modified copolymerized polyethylene terephthalate, modified copolymerized polybutylene terephthalate, block copolyether ester containing polyether, etc.), ethylene-vinyl acetate copolymer or the like. Modified polyethylene (such as a complete or partial hydrolyzate) and polyethylene. Particularly preferred among these are copolyamides. The heat softening point of the (A) is usually 50 to 20.
The temperature is 0 ° C, preferably 70 to 160 ° C.

As the viscosity-imparting agent (B), known water-soluble or water-dispersible polymer substances can be used. Specific examples thereof include acrylic resins [polymers of (meth) acrylic acid or (meth) acrylic acid. With other monomers (acrylic acid ester, vinyl acetate, acrylamide, etc.) and their salts (sodium salt, potassium salt,
Ammonium salts, amine salts, etc.), dextrin, cellulose derivatives (carboxymethyl cellulose, hydroxyethyl cellulose, etc.), sodium alginate, polyvinyl alcohol, locust bean gum, polyethylene glycol, etc., and these can be used alone or in combination of two or more. To be done. Of these, preferred is acrylic acid resin.

As the emulsifying dispersant (C), those conventionally used can be used, and specific examples thereof include fatty acids and salts thereof (alkali salts such as sodium salts, ammonium salts, etc.), and alkalis of dialkylsulfosuccinate. Anionic surfactants such as metal salts and nonionic surfactants such as polyoxyethylene alkylphenyl ethers are mentioned.

The active hydrogen compound having a nitrogen-containing ring constituting the water-soluble temperature-sensitive gelling agent (D) is a compound having active hydrogen for addition of a nitrogen-containing ring and an alkylene oxide, and examples thereof include a nitrogen-containing oil. Cyclic compounds [those having an aziridine ring (aziridine, 2-methylaziridine, etc.), those having a pyrrolidine ring (pyrrolidine, 2
-Methylpyrrolidine, 2-pyrrolidone, succinimide, etc.), those having a piperidine ring (piperidine, 2-
Methylpiperidine, 3,5-dimethylpiperidine, 2-
Ethylpiperidine, 4-piperidinopiperidine, 4-pyrrolidinopiperidine, ethylpipecolate, etc.), those having a piperazine ring (1-methylpiperazine, 1-
Methyl-3-ethylpiperazine etc.), those having a morpholine ring (morpholine, 2-methylmorpholine, 3,
5-dimethylmorpholine, thiomorpholine, etc.), ε-
Caprolactam and the like] and a nitrogen-containing unsaturated cyclic compound (3-pyrroline, 2,5-dimethyl-3-pyrroline, 2
-Hydroxypyridine, 4-pyridylcarbinol, 2
-Hydroxypyrimidine).

Of these, preferred are nitrogen-containing alicyclic compounds, more preferred are those having a piperidine ring and those having a morpholine ring, and those having a morpholine ring are particularly preferred.

Examples of the alkylene oxide to be added to the active hydrogen compound include ethylene oxide, propylene oxide and butylene oxide. Of these, preferred is ethylene oxide and / or propylene oxide.

The number of moles of alkylene oxide added varies depending on the desired transition (gelling) temperature, the type of active hydrogen compound having a nitrogen-containing ring, the type of alkylene oxide, etc., but is usually 1 to 50 moles, preferably It is 1 to 5 mol. This number of added moles affects the transition temperature. When the alkylene oxide is ethylene oxide, the higher the number of added moles, the higher the transition temperature, and in the case of propylene oxide or butylene oxide, the higher the number of added moles, the lower the transition temperature. Become.

The monomeric vinyl carboxylic acid ester (a) constituting (D) is an ester of the alkylene oxide adduct exemplified above and a vinyl carboxylic acid. The vinyl carboxylic acid is not particularly limited as long as it is a compound which reacts with the alkylene oxide adduct to give a vinyl carboxylic acid ester, and vinyl carboxylic acid [(meth) acrylic acid, (iso) crotonic acid, maleic acid Acid, fumaric acid, itaconic acid, vinyl benzoic acid, 2-carboxy-4-isopropenyl-3-pyrrolidineacetic acid, etc.]; and ester-forming derivatives of these vinylic carboxylic acids (anhydrides, acid halides, methyl esters, etc.) ) Is mentioned.

Of these vinyl carboxylic acids, (meth) acrylic acid, maleic acid, vinyl benzoic acid and their ester-forming derivatives are preferable, and (meth) acrylic acid and the ester-forming derivative of (meth) acrylic acid are preferable. Particularly preferred.

(D) is a polymer having the ester (a) as all the constituent units, or a copolymer of the ester (a) and another vinyl monomer (b), which constitutes (a). It is preferable that the unit is usually 50% by weight or more, preferably 70% by weight or more. If the composition ratio of (a) is less than 50% by weight, a sharp temperature-sensitive gelation effect cannot be obtained.

Other vinyl-based monomers (b) include
There is no particular limitation as long as it is a vinyl monomer copolymerizable with (a), but for example, hydrophilic (b-1), ionic (b-2) and lipophilic (b-3) Etc. Examples of (b-1) include hydroxyethyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, (meth) acrylamide, and N.
-Methylol (meth) acrylamide, N-vinyl-2
-Pyrrolidone and the like. Examples of (b-2) include acids such as (meth) acrylic acid, (anhydrous) maleic acid, and styrenesulfonic acid, and salts thereof, N, N-dimethylaminoethyl (meth) acrylate, N, N-diethylamino. Examples include amines such as propyl (meth) acrylate and salts thereof. Examples of (b-3) include (meth) acrylate derivatives such as methyl (meth) acrylate, butyl (meth) acrylate, glycidyl (meth) acrylate, N-butyl (meth) acrylamide, N-cyclohexyl (meth) acrylamide. And N-alkyl (meth) acrylamide derivatives such as (meth) acrylonitrile, styrene, vinyl acetate, vinyl chloride butadiene, and isoprene.

Of these, preferred are the monomers exemplified as (b-1).

The weight average molecular weight of (D) is usually 1,000.
~ 5,000,000, preferably 10,000 ~
2,000,000, particularly preferably 100,000 to
It is 1,000,000.

(D) is obtained by radical polymerization using the monomer component (a) and, if necessary, (b). There is no particular limitation on the polymerization method, and ordinary methods (solution polymerization method, bulk polymerization method, emulsion polymerization method, suspension polymerization method, etc.) can be used.
Specific examples thereof include a method of heating a monomer component in the presence of a radical polymerization initiator, a method of irradiating with light in the presence of a photosensitizer, and a method of irradiating with radiation.

The reaction temperature for the polymerization in the presence of the radial polymerization initiator is usually 20 to 350 ° C., preferably 50 to 1
50 ° C, the reaction pressure is usually 0 to 20 atm, preferably 0 to
The reaction time at 10 atm is usually 1 to 600 minutes, preferably 5 to 240 minutes.

The radical polymerization initiator to be used is not particularly limited, and known azo initiators [azobis (dimethylvaleronitrile), azobis (isobutyronitrile), azobis (4-cyanopentanoic acid), azobis ( 2-amidinopropane), etc.], peroxide initiators (hydrogen peroxide, benzoyl peroxide, dicumyl peroxide,
Di-tert-butyl peroxide, cumene hydroperoxide, etc.) can be used.

If desired, a defoaming agent, a plasticizer, polyethylene oxide (viscosity characteristic improver), etc. may be added to the synthetic resin aqueous dispersion of the present invention.

As the defoaming agent, a non-silicon type defoaming agent, for example, a mineral oil type defoaming agent, an organic polar compound (polyoxypropylene polyglycol or its derivative, Pluronic, span or tween type nonionic surfactant, etc.) And silicone-based defoaming agents (such as silicone resin).

As the plasticizer, when the synthetic resin powder is a polyamide resin powder, an aromatic plasticizer having a sulfoamide group (such as benzene or toluenesulfonic acid amide) is used. When the synthetic resin powder is a polyester resin powder, an aromatic plasticizer is used. A plasticizer (such as naphthalene or α-methylnaphthalene) is used.

As the polyoxyethylene oxide, polyethylene oxide having an average molecular weight of 2,000,000 or more is used.

The blending amounts of the components (A) to (D) in 100 parts by weight of the aqueous resin powder dispersion of the present invention are as follows. The blending amount of the thermoplastic resin powder (A) is usually 15 to
50 parts, preferably 20-40 parts. (A) is 1
If the amount is less than 5 parts, the adhesive force of the obtained interlining material to the surface material will be insufficient, and if it exceeds 50 parts, the coatability will be poor or the texture of the interlining material will be rough.

The amount of the temperature-sensitive gelling agent (D) used varies depending on the type and viscosity of the aqueous dispersion, but is usually 0.000.
It is 1 to 30 parts by weight, preferably 0.001 to 20 parts by weight. If (D) is less than 0.0001 part, the effect as a temperature-sensitive gelling agent is not exhibited, and if it exceeds 20 parts by weight, the adhesiveness of (A) is hindered.

The compounding amount of the viscosity-imparting agent (B) is usually 0.5.
10 to 10 parts by weight, preferably 1 to 5 parts by weight. (B)
If less than 0.5 part by weight, an appropriate viscosity cannot be obtained and the coatability is poor, and if more than 10 parts by weight, the adhesiveness of (A) is hindered, or the viscosity is increased to hinder the coatability. .

The compounding amount of the emulsifying dispersant (C) is usually 1 to 3.
It is 0 part by weight, preferably 5 to 20 parts by weight. If the content of (C) is less than 1 part by weight, a stable aqueous dispersion cannot be obtained, resulting in poor coatability, and if it exceeds 30 parts by weight, the adhesiveness of (A) is impaired.

The amount of water required to form the aqueous dispersion of the present invention is usually 20 to 90 parts by weight, preferably 30 to 80 parts by weight, based on 100 parts by weight of the aqueous dispersion. If the amount of water is less than 20 parts by weight, the coatability will be poor, and if it exceeds 90 parts by weight, the adhesive force of the interlining material to the outer material will be reduced.

The method for producing the aqueous dispersion of the present invention is not particularly limited. For example, a viscosity imparting agent (B), an emulsifying dispersant (C), a temperature-sensitive gelling agent (D), water and, if necessary, a defoaming agent, A method may be mentioned in which a mixture prepared by mixing and dispersing each component made of a plasticizer is prepared in advance, and the thermoplastic resin powder (A) is gradually added therein to prepare an aqueous dispersion. A known mixer, for example, a homomixer, a universal mixer, a Satake type stirrer, or the like can be used for mixing and dispersing.

The viscosity of the thus obtained aqueous dispersion of the present invention is usually 5000 to 50000 CP at 25 ° C.
S, preferably 7000-35000 CPS. If the viscosity is less than 5000 CPS or more than 50,000 CPS, the coatability will be poor.

The aqueous dispersion of the present invention is useful as a hot melt adhesive, especially as an adhesive for adhesive interlining. The conventional method can be applied as it is. The aqueous dispersion of the present invention is applied to a base fabric and heat-treated to obtain an adhesive interlining.

As the base cloth, usual woven cloth, non-woven cloth and knitted cloth are used. The material is natural fiber (cotton, wool,
Hemp etc.), semi-synthetic fibers (rayon etc.), synthetic fibers (nylon, tetron, acrylic etc.) and blended products thereof. The application of the aqueous dispersion to the base fabric is performed by a usual wet coating method (rotary screen printing method). The coating amount of the aqueous dispersion is usually 10 to 80 g / m ² in terms of solid content, and is applied to the base fabric in a dot shape. The heat treatment is carried out in an ordinary heating furnace at 100 to 200 ° C., and after coating and heat treatment, the adhesive interlining is obtained by cooling. The adhesive interlining is bonded to the outer material and used for clothing or the like.

[0035]

EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited thereto. In the following, parts are parts by weight and% is% by weight.

Production Example 1 Production of Temperature-Sensitive Gelling Agent (1) 100 parts of 2-morpholinoethylmethacrylate (ester of morpholine ethylene oxide 1 mol adduct with methacrylic acid) and 0.1 part of azobis (dimethylvaleronitrile) were added. Charge the ampoule, freeze and degas, then seal.
Polymerization was carried out at 50 ° C. for 8 hours to obtain a temperature-sensitive gelling agent (1).

Preparation Example 2 Preparation of Temperature-Sensitive Gelling Agent (2) 100 parts of 2- (2-morpholinoethoxy) ethyl methacrylate (ester of morpholine ethylene oxide 2 mole adduct and methacrylic acid) and azobis (dimethylvaleronitrile) 0.1 part was placed in an ampoule, freeze-deaerated, sealed, and polymerized at 60 ° C. for 8 hours to obtain a temperature-sensitive gelling agent (2).

Production Example 3 Production of temperature-sensitive gelling agent (3) 80 parts of 2-morpholinoethylmethacrylate (ester of morpholine with ethylene oxide 1 mol and methacrylic acid), 20 parts of acrylic acid and azobis (dimethylvaleronitrile) 0.1 part was placed in an ampoule, freeze-deaerated, sealed, and polymerized at 50 ° C. for 8 hours to obtain a temperature-sensitive gelling agent (3).

Production Example 4 Production of temperature-sensitive gelling agent (4) 70 parts of 2- (2-morpholinoethoxy) ethyl methacrylate (ester of morpholine ethylene oxide 2 mole adduct and methacrylic acid), methyl methacrylate 2
An ampoule was charged with 0 part, 10 parts of acrylic acid and 0.1 part of azobis (dimethylvaleronitrile), freeze-deaerated, sealed, and polymerized at 60 ° C. for 8 hours to obtain a temperature-sensitive gelling agent (4). .

Example 1 2 parts of "Modicol VD" (15% aqueous solution of sodium polyacrylate: manufactured by San Nopco Ltd.) as a viscosity-imparting agent,
20 parts of ammonium stearate salt water emulsion (solid content 25%) as an emulsifying dispersant and 0.05 parts of the temperature-sensitive gelling agent (1) obtained in Production Example 1 were diluted with 50 parts of water, and heat-bonded therein. Amilan 832-P80 "as a synthetic resin powder
[Polyamide resin powder: manufactured by Toray Industries, Inc.] 28 parts was gradually added to the aqueous dispersion of the present invention in the form of a uniform white paste [1].
Got The viscosity was 23000 CPS (25 ° C).

Example 2 2 parts of "Modicol VD", 20 parts of ammonium stearate salt water emulsion (solid content 25%) and 0.05 parts of the temperature-sensitive gelling agent (2) obtained in Preparation Example 2 in 50 parts of water. Diluted with
28 parts of "Amilan 832-P80" was gradually added thereto to obtain a uniform white paste-like aqueous dispersion [2] of the present invention. The viscosity was 21000 CPS (25 ° C).

Example 3 2 parts of "Modicol VD", 20 parts of ammonium stearate salt water emulsion (solid content 25%) and 0.05 parts of the temperature-sensitive gelling agent (1) obtained in Preparation Example 1 in 50 parts of water. Diluted with
28 parts of "Vylon GM-900" [polyester resin powder: manufactured by Toyobo Co., Ltd.] was gradually added thereto, and the aqueous dispersion [3] of the present invention in a uniform white paste state had a viscosity of 2100.
It was 0 CPS (25 degreeC).

Example 4 The same procedure as in Example 1 was repeated except that the temperature-sensitive gelling agent (1) was replaced by the temperature-sensitive gelling agent (3) obtained in Production Example 3. An aqueous dispersion [4] of the invention was obtained. The viscosity was 22,500 CPS (25 ° C).

Example 5 The procedure of Example 3 was repeated, except that the temperature-sensitive gelling agent (1) was replaced by the temperature-sensitive gelling agent (4) obtained in Production Example 4. An aqueous dispersion [5] of the invention was obtained. The viscosity was 22000 CPS (25 ° C).

Comparative Example 1 A comparative aqueous dispersion [6] was obtained in the same manner as in Example 1 except that the temperature-sensitive gelling agent was not used. The viscosity was 22000 CPS (25 ° C).

Comparative Example 2 A comparative aqueous dispersion [7] was obtained in the same manner as in Example 3, except that the temperature-sensitive gelling agent was not used. The viscosity was 20000 CPS (25 ° C).

Performance Test Example 1 Table 1 shows the results of a performance test performed using the aqueous dispersions [1] to [6] obtained in Examples 1 to 4 and Comparative Examples 1 and 2.

[0048]

[Table 1]

Explanation of symbols: ○ Good △ Somewhat bad × Bad

(Test Method) Applicability to Base Fabric: Each aqueous dispersion was applied to a base fabric for interlining (cotton broad) using a wet coating processor (manufactured by Matsuo Seiki Co., Ltd.). The screen used was 17 points / inch, diameter 0.45 mm, thickness 0.3 mm. The coatability was evaluated by visually observing the shape and uniformity of dots on the base fabric. Texture of interlining: Drying after coating was performed in a circulating air passage having a length of 6 m at 135 to 140 ° C. and a speed of 12 m / min. The coating amount (solid content) after drying was 20 g / m ² . The texture of the interlining after drying was evaluated by touch. Adhesive strength of interlining: After leaving the obtained adhesive interlining at room temperature all day and night, using an adhesive interlining press machine (manufactured by Kobe Electric Co., Ltd.) on the outer material (cotton knit), 150 ° C × 0.25 kg / cm ² ×
It stuck together on the condition of 30 seconds. The adhesive strength (initial and after washing: JISL-1042-I method) of this product was measured by an Instron universal testing machine (manufactured by Shimadzu Corporation).

[0051]

When the synthetic resin powder aqueous dispersion of the present invention is used as an adhesive for interlining, penetration of the resin into the inside of the base fabric is suppressed and the texture of the interlining becomes very soft. In addition, the coating properties are excellent, the screen is not clogged, the dot shape is good, and the adhesive strength with the outer material and the washing resistance are also excellent.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location C08L 67/02 LPL 8933-4J 77/00 LQX 9286-4J C09J 167/02 JFS 8933-4J D03D 1 / 00 B 7199-3B (72) Inventor Tatsuya Osumi 1-11-11, Hitotsubashi Honmachi, Higashiyama-ku, Kyoto Sanyo Chemical Industry Co., Ltd.

Claims (6)

[Claims] 1. A heat-adhesive synthetic resin powder (A), a viscosity-imparting agent (B), an emulsifying dispersant (C) and a water-soluble temperature-sensitive gelling agent (D) dispersed in an aqueous dispersion. Characteristic synthetic resin powder aqueous dispersion. 2. The temperature-sensitive gelling agent (D) contains 50% by weight of vinyl carboxylic acid ester (a) of an alkylene oxide adduct of an active hydrogen compound having a nitrogen-containing ring in the constitutional unit.
The synthetic resin powder aqueous dispersion according to claim 1, which is a vinyl polymer containing the above. 3. The vinyl carboxylic acid ester (a) is
The synthetic resin powder aqueous dispersion according to claim 2, which is a (meth) acrylic acid ester of an ethylene oxide and / or propylene oxide 1 to 20 mol adduct of (substituted) morpholine. 4. The synthetic resin powder according to claim 1, wherein the heat-adhesive synthetic resin powder (A) is at least one selected from the group consisting of polyamide, polyester, polyethylene and ethylene-vinyl acetate copolymer. Aqueous dispersion. 5. The viscosity at 25 ° C. is 5000 to 50000.
The synthetic resin powder aqueous dispersion according to any one of claims 1 to 4, which is CPS. 6. The synthetic resin powder aqueous dispersion according to claim 1, which is used as an adhesive for an adhesive interlining.