TW201422166A - Polyurethane compositions for surface treatment of powder-free gloves - Google Patents

Abstract

The present invention provides polyurethane compositions for surface treatment of powder-free gloves, which comprise aqueous polyurethane, a core-shell polymer having an average particle size ranging from 70 to 250 <mu>m, a functional coagent, and a solvent, in which the core-shell polymer comprises a core-shell polyurethane-based compound. The polyurethane compositions of the present invention, after applied to inside surface of a glove, form a film layer on the inside surface of the glove. The film layer has a slippery property, allowing user feel comfortable in use. Further, the film layer comprises a projection structure in the form of densely distributed particles and providing fluffy perception so as to allow user to easily put on and take off. Further, the polyurethane composition maintains stable and causes no stratification after being diluted.

Description

Polyurethane composition for surface treatment of powder-free gloves

The present invention relates to a polyurethane composition for surface treatment of a powder-free glove, and more particularly to a polyurethane composition comprising an aqueous polyurethane and a core-shell polymer, wherein the core-shell polymer comprises a core-shell polyurethane compound.

At present, most of the commercially available plastic gloves are made of PVC, natural rubber, nitrile rubber (NBR), etc., but since the materials themselves are sticky and airtight, the gloves made of such materials are prone to sticking. For example, the inner surface of the glove is sticky to each other, and the inner surface of the glove is adhered to the hand. The adhesion of the inner surface of the glove may make it difficult for the user to put on the glove, and the inner surface of the glove is sticky with the hand, which may cause the user to wear it. During the glove, the hot air and sweat generated by the hand cannot be smoothly discharged, and the sultry and sticky feeling is generated, and the glove is not easily removed.

In order to improve the above disadvantages, Chinese Patent Publication No. CN101591501A discloses an aqueous coating agent for PVC powder-free gloves comprising 40 to 80 wt% of aqueous polyurethane, 10 to 40 wt% of polyacrylic acid emulsion, and 0.1 to 1.5 wt%. An antifoaming agent, 0.05 to 5 wt% of a wet leveling agent, 2 to 8 wt% of a anti-adhesive slip agent, and 0.1 to 2 wt% of a water retaining agent. Wherein, the aqueous polyurethane has a particle diameter of 0.05 to 0.15 μm and a molecular weight of 1 to 80,000, and the polyacrylic acid emulsion has a particle diameter of 0.2 to 2 μm and a molecular weight of 5 to 100,000. The process of forming a coating on the inner surface of the PVC glove by using the aqueous coating agent causes the polyacrylic acid emulsion to form most hard and fine particles, so that the inner surfaces of the gloves are not adhered to each other, thereby improving the user's difficulty. The disadvantage of wearing gloves made of PVC material.

However, since the particles formed by the polyacrylic acid emulsion after the application of the aqueous coating agent are too small, the problem that the inner surfaces of the gloves adhere to each other can be slightly improved, and the problem that the inner surface of the glove adheres to the hand cannot be improved, so that it is still impossible. Improve the comfort of the user during the wearing of the gloves, and the user can not easily remove the gloves.

Accordingly, it is an object of the present invention to provide a polyurethane composition for surface treatment of powder-free gloves suitable for surface treatment of plastic gloves. The polyurethane composition not only improves the adhesion of the inner surface of the glove, but also improves the adhesion of the inner surface of the glove to the hand, thereby improving the comfort of the user during wearing the glove, and also allowing the user to easily put on and off. In addition to gloves.

Thus, the polyurethane composition for surface treatment of the powder-free glove of the present invention comprises an aqueous polyurethane, a core-shell polymer having an average particle diameter ranging from 70 to 250 μm , a functional auxiliary, and a solvent, wherein the core The shell type polymer includes a core-shell type polyurethane compound.

The effect of the invention is that after the polyurethane composition is applied to the inner surface of the glove, a film layer can be formed on the inner surface of the glove. The film has a smoothness that allows the user to feel comfortable during glove wear. Moreover, the film layer has a convex structure with a dense granular shape and a fluffy feeling, which not only improves the adhesion of the inner surface of the glove, but also avoids the problem that the inner surface of the glove adheres to the hand, thereby making the user easy to wear and remove. At the same time, the core-shell polymer in the polyurethane composition has a good phase with aqueous polyurethane, functional additives and solvent. Capacitance, therefore, the polyurethane composition remains stable after dilution and does not cause delamination.

The polyurethane composition for surface treatment of the powder-free glove of the present invention comprises an aqueous polyurethane, a core-shell polymer having an average particle diameter ranging from 70 to 250 μm , a functional auxiliary, and a solvent, wherein the core-shell polymerization The material includes a core-shell type polyurethane compound.

The respective components of the polyurethane composition for surface treatment of the powder-free gloves of the present invention will be further described below:

[Aqueous polyurethane]

Preferably, the total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the aqueous polyurethane is used in an amount ranging from 40 to 76.5 wt%.

Preferably, the aqueous polyurethane is obtained by polymerization of a mixture, and the mixture includes a polymer polyol, a polyisocyanate, an environmentally friendly solvent, an ionizing agent, a neutralizing agent, a chain extender, and Ionic water. More preferably, the polymer polyol is used in an amount ranging from 15 to 25 wt% based on the total amount of the mixture, and the polyisocyanate is used in an amount ranging from 5 to 20 wt%, the environmentally friendly solvent. The amount of use is in the range of 3 to 15 wt%, the amount of the ionizing agent is in the range of 1 to 3 wt%, the amount of the chain extender used is in the range of 1.2 to 3 wt%, and the amount of the neutralizing agent used is 1 to 3 wt%, and the amount of deionized water used is in the range of 53 to 65 wt%. Still more preferably, the polymer polyol is used in an amount ranging from 15 to 25 wt% based on the total amount of the mixture of 100 wt%, and the polyisocyanate is used. The dosage range is 5 to 15 wt%, the environmentally friendly solvent is used in an amount ranging from 4 to 15 wt%, the ionizing agent is used in an amount ranging from 1 to 2 wt%, and the chain extender is used in an amount ranging from 1.2 to 2.5 wt%, the neutralizing agent is used in an amount ranging from 1 to 2.5 wt%, and the deionized water is used in an amount ranging from 53 to 60 wt%.

Preferably, the aqueous polyurethane has a weight average molecular weight ranging from 30,000 to 50,000.

In more detail, the polymer polyol is selected from the group consisting of polyester diols, polyether diols, or a combination thereof. The polyester diol may be used singly or in combination, and the polyester diol is, for example but not limited to, polyethylene adipate ethylene glycol diethylene glycol ester diol, polyadipate diethylene glycol diol diol , polybutylene adipate diol, polyhexane adipate diol diol, polyethylene adipate ethylene glycol butylene glycol diol, etc., the weight average molecular weight range of the above polyester diol is 500 to 2000. The polyether diol may be used singly or in combination, and the polyether diol is, for example but not limited to, polyoxypropylene diol, polyoxyethylene diol, etc., and the above polyether diol has a weight average molecular weight range of 500. To 2000.

The polyisocyanate is a diisocyanate, and more preferably, the diisocyanate is an aliphatic diisocyanate, the aliphatic diisocyanate may be used singly or in combination, and the aliphatic diisocyanate such as, but not limited to, hexamethylene diisocyanate, trimethyl Base-1,6-hexamethylene diisocyanate or the like.

The environmentally friendly solvent is selected from the group consisting of dimethyl acetone amine, diethylene glycol monomethyl ether, propylene glycol monomethyl ether, diethylene glycol monopropyl ether, or a combination thereof.

The ionizing agent is an anionic ionizing agent, and more preferably, the negative ion The ionic ionization reagent is 2,2-dihydroxymethyl propionic acid (DMPA).

The neutralizing agent is, for example but not limited to, potassium hydroxide or an organic amine or the like. The organic amines are selected from the group consisting of triethylamine, tetramethylethylenediamine, tetramethylpropanediamine, tetramethylhexamethylenediamine and the like.

The chain extender is an organic amine and is selected from the group consisting of triethanolamine, 3,5-diethyltoluenediamine, diethanolamine and the like.

[core-shell polymer]

The core-shell type polymer includes a core-shell type polyurethane-based compound. The core-shell polymer further includes a core-shell type polytetrafluoroethylene resin, a core-shell type polyacrylic resin, or a combination thereof.

The core-shell type polyurethane compound may be used singly or in combination, and the core-shell type polyurethane compound is, for example but not limited to, a core-shell type polyurethane homopolymer or a core-shell type polyurethane copolymer. The core-shell polyurethane copolymer is, for example but not limited to, a copolymer of a urethane-based compound and an acrylic acid or an acrylate. A copolymer of the urethane-based compound and acrylic acid or acrylate is commercially available from ALBERDINGK, Germany (commodity model: ALBERDINGK® UC 90 or ALBERDINGK® UC 80).

Preferably, the total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the core-shell polymer is used in an amount ranging from 0.5 to 5 wt%.

[Functional Aid]

The functional additive is used in an amount ranging from 13 to 49.5 wt%, based on 100 parts by weight of the total amount of the polyurethane composition for surface treatment of the powder-free glove. Among them, the functional auxiliary agent is, for example, but not limited to, an aqueous polyacrylic resin, a wetting agent, a slipping agent, a viscosity-increasing agent, or an antifoaming agent.

The humectant may be used singly or in combination, and is an organic hydrazine humectant such as, but not limited to, BYK-333, BYK-348, BYK-330 or BYK-310 of BYK Company of Germany. The slip agent may be used singly or in combination, and is an acrylate copolymer-based slip agent such as, but not limited to, BYK359, BYK357, BYK361N, etc. of BYK Company of Germany. The thickener may be used singly or in combination, such as, but not limited to, aqueous acrylates or aqueous polyurethanes (eg, TW-710 from Anfeng). The antifoaming agent may be used singly or in combination, and is an organic antifoaming agent such as, but not limited to, BYK019, BYK022, BYK025, etc. of BYK Company of Germany.

[solvent]

The total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the solvent is used in an amount ranging from 10 to 40% by weight. The solvent is not particularly limited as long as the aqueous polyurethane, the core-shell polymer, and the functional auxiliary agent can be uniformly mixed, and the solvent is, for example, but not limited to, deionized water or an environmentally friendly solvent. It is as described above, so it will not be described again.

The method for preparing the polyurethane composition for surface treatment of the powder-free glove of the present invention is not particularly limited, and for example, the aqueous polyurethane, the core-shell polymer, the functional auxiliary agent and the solvent may be stirred and uniformly mixed in a stirrer, or The filtration treatment can be further carried out after mixing.

The polyurethane composition for surface treatment of the powder-free glove of the present invention can be used as a surface treatment agent for surface treatment of general plastic gloves, and the material of the plastic glove is, for example, but not limited to, polyvinyl chloride (PVC), natural rubber or synthetic rubber.

When the polyurethane composition for surface treatment of the powder-free glove of the present invention is applied to the inner surface of the glove, the core-shell polymer has good compatibility with the aqueous polyurethane, the functional auxiliary and the solvent, and therefore, the polyurethane composition After dilution, the material remains stable and there is no delamination. And even if the core-shell type polymer used in the present invention has a particle diameter of 70 to 250 μm , the polyurethane composition of the present invention has good dispersibility and does not precipitate, resulting in delamination. Furthermore, the film layer formed by applying the polyurethane composition of the present invention on the inner surface of the glove has a smoothness, can make the user feel comfortable during wearing the glove, and the film layer also has a fluffy granular convex structure. It not only improves the adhesion of the inner surface of the glove, but also avoids the problem that the inner surface of the glove is sticky with the hand, so that the user can easily put on and remove it, and the moisture is easily formed during the wearing process. Discharge, and at the same time reduce the occurrence of sultry and sticky feeling.

In addition to the above advantages, the preparation of the powder-free glove for the surface treatment of the powder-free glove of the present invention is generally carried out at a high temperature, and the powder-free glove surface treatment agent needs to be cooled by the glove before further contact with the glove. Avoid film formation at high temperatures and avoid foaming of the formed film layer, and the polyurethane composition of the present invention does not need to wait for the glove to cool, and directly operates at a high temperature without film formation, and the formed There is no problem of foaming on the film layer. In addition, after contact with the glove, it can be slowly matured with the residual temperature. And drying to form a film layer, therefore, the processing time of the glove surface treatment can be greatly shortened, and the production cost can be reduced.

The present invention will be further illustrated by the following examples, but it should be understood that this embodiment is intended to be illustrative only and not to be construed as limiting.

<Example> Preparation of aqueous polyurethane [Preparation Example 1]

Take 3 kg of diethylene glycol monomethyl ether (environmentally friendly solvent), 2 kg of polybutylene adipate diol (polyester diol, molecular weight 2000), 3 kg of polyoxyethylene diol ( The polyether diol, molecular weight 2000) was placed in a reaction vessel and stirred, and the reaction was carried out at a pot temperature of 35 to 40 °C. Next, 2 kg of hexamethylene diisocyanate and 0.3 kg of 2,2-dimethylolpropionic acid (DMPA, ionizing agent) were further added to the reaction vessel, stirred and heated to 70 to 80 ° C for reaction; 0.3 kg of triethanolamine (chain extender) was added to carry out the chain extension reaction. Finally, an aqueous polyurethane emulsion was obtained by adding 0.5 kg of triethylamine (neutralizer) and 13 kg of deionized water to the reaction vessel and stirring. The weight average molecular weight of the aqueous polyurethane in the aqueous polyurethane emulsion was 46,530.

[Preparation Example 2]

Take 2 kg of propylene glycol monomethyl ether (environmentally friendly solvent), 2 kg of polyhexamethylene adipate diol (polyester diol, molecular weight 1000), 2 kg of polyoxypropylene diol (polyether 2) The alcohol, molecular weight 2000) was put into a reaction vessel and stirred, and the reaction was carried out at a pot temperature of 35 to 40 °C. Then, add it to the reactor 3 kg of trimethyl-1,6-hexamethylene diisocyanate and 0.3 kg of 2,2-dimethylolpropionic acid, stirred and heated to 70 to 80 ° C for reaction, after which 0.5 kg of 3 was added. 5-Diethyltoluenediamine (chain extender) was subjected to chain extension reaction. Finally, 0.3 kg of tetramethylpropanediamine (neutralizer) and 13 kg of deionized water were added to the reaction vessel, and stirred to obtain an aqueous polyurethane emulsion. The weight average molecular weight of the aqueous polyurethane in the aqueous polyurethane emulsion was 41,365.

[Preparation Example 3]

Take 1 kg of diethylene glycol monopropyl ether (environmentally friendly solvent), 2 kg of polyethylene adipate ethylene glycol butylene glycol diol (polyester diol, molecular weight 1000), 2 kg of polyethylene oxide The diol (polyether diol, molecular weight 500) was put into the reaction vessel and stirred, and the reaction was carried out at a pot temperature of 35 to 40 ° C. Next, 3 kg of hexamethylene diisocyanate and 0.4 kg were further added to the reaction vessel. 2,2-Dimethylolpropionic acid was stirred and heated to 70 to 80 ° C for reaction, and then 0.3 kg of diethanolamine (chain extender) was added to carry out a chain extension reaction. Finally, an aqueous polyurethane emulsion was obtained by adding 0.5 kg of tetramethylethylenediamine (neutralizer) and 13 kg of deionized water to the reaction vessel and stirring. The weight average molecular weight of the aqueous polyurethane in the aqueous polyurethane emulsion was 35,240.

The amounts and content ratios of the components used in the above Preparation Examples 1 to 3 are shown in Table 1.

Preparation of polyurethane composition for surface treatment of powder-free gloves [Example 1]

6.5 kg of aqueous polyurethane of Preparation Example 1, 1.5 kg of aqueous polyacrylic acid resin, 0.2 kg of defoamer BYK019, 0.05 kg of humectant BYK-330, 0.10 kg of slip agent BYK359, and 1.0 kg of deionized water, in order Put into a 15 L stainless steel kettle, stir and disperse evenly, and then add 0.5 kg of a core-shell urethane-based compound copolymer with acrylic acid (manufacturer: ALBERDINGK, Germany, product model: ALBERDINGK® UC 90, grain Diameter: 100 to 250 μm ) and 0.15 kg polyacrylic acid thickener TT-935 (manufacturer: Rohm and Haas), after which it is stirred for 4 to 5 hours to a uniform state to obtain a polyurethane-free surface treatment polyurethane. Composition.

[Embodiment 2]

6 kg of the aqueous polyurethane of Preparation 2, 2.0 kg of aqueous polyacrylic acid resin, 0.3 kg of antifoaming agent BYK022, 0.05 kg of humectant BYK-348, 0.2 kg of slip agent BYK357 and 1.0 kg of deionized water were sequentially placed. In a 15 L stainless steel kettle, stir and disperse evenly, and then add 0.3 kg of a core-shell urethane-based compound to a copolymer of acrylic acid (manufacturer: ALBERDINGK, Germany, product model: ALBERDINGK ^® UC 80, particle size : 70 to 150 μm ) and 0.15 kg of polyurethane thickener TW-710 (manufacturer: Anfeng), after stirring for 4 to 5 hours to a uniform state, a polyurethane composition for surface treatment of powder-free gloves can be obtained.

[Example 3]

5.7 kg of aqueous polyurethane of Preparation 3, 2.5 kg of aqueous polyacrylic acid resin, 0.35 kg of defoamer BYK025, 0.05 kg of wetting agent BYK-348, 0.2 kg of slip agent BYK361N and 1.0 kg of deionized water, in order Put into a 15 L stainless steel kettle, then stir and disperse evenly, and then add 0.05 kg of a core-shell urethane-based compound copolymer with acrylic acid (manufacturer: ALBERDINGK, Germany, product model: ALBERDINGK ^® UC 80, grain Diameter: 70 to 150 μm ) and 0.15 kg of polyurethane thickener TW-710 (manufacturer: Anfeng), after stirring for 4 to 5 hours to a uniform state, a powder-free glove surface treatment with polyurethane can be obtained. Things.

[Comparative Example 1]

6 kg of the aqueous polyurethane of Preparation 2, 2.0 kg of aqueous polyacrylic acid resin, 0.3 kg of antifoaming agent BYK019, 0.05 kg of humectant BYK330, 0.2 kg of slip agent BYK357 and 1.0 kg of deionized water were sequentially put into 15 In the stainless steel kettle of L, it is stirred and dispersed uniformly, and then 0.3 kg of core-shell polyacrylic resin (manufacturer: ALBERDINGK, Germany, product type: AC2523, particle size: 100 to 150 μm ) and 0.15 kg of polyurethane are added. Thickener TW-710 (manufacturer: Anfeng Company), after stirring for 4 to 5 hours to a uniform state, a polyurethane composition for surface treatment of powder-free gloves can be obtained.

[Comparative Example 2]

6 kg of the aqueous polyurethane of Preparation 2, 2.0 kg of aqueous polyacrylic acid resin, 0.3 kg of antifoaming agent BYK019, 0.05 kg of humectant BYK330, 0.2 kg of slip agent BYK361N and 1.0 kg of deionized water were sequentially put into 15 In the stainless steel kettle of L, it is then stirred and dispersed uniformly, and then 0.3 kg of core-shell type polytetrafluoroethylene resin (manufacturer: DuPont, product model: Zonyl MP 1000, particle size: 1 to 50 μm ) and 0.15 kg are added. Polyurethane thickener TW-710 (manufacturer: Anfeng Company), after stirring for 4 to 5 hours to a uniform state, a polyurethane composition for surface treatment of powder-free gloves can be obtained.

The types and amounts of the components used in the above Examples 1 to 3 and Comparative Examples 1 to 2 are shown in Table 2.

[Property test 1]

Stability of the polyurethane composition after dilution: 1 kg of the polyurethane compositions of Examples 1 to 3 and Comparative Examples 1 to 2 were respectively added to 10 L of water Dilute and place for 1 week to see if delamination or precipitation occurred. "○": It means that the polyurethane composition is diluted to be a homogeneous phase, and no delamination or precipitation occurs, which means that the polyurethane composition has good stability after dilution, and can be used immediately without application when used on a production line. And it will not deteriorate after long-term storage; "X": It means that the polyurethane composition is stratified after dilution, and it can be used even if it is mixed evenly in the industrial application, and it is easy to deteriorate after long-term storage. The test results are shown in Table 3.

[Property test 2]

The polyurethane compositions of Examples 1 to 3 and Comparative Examples 1 to 2 were respectively applied to the inner surfaces of five PVC gloves to obtain five test gloves each designated as gloves 1 to 5. Test gloves 1 to 5 were subjected to high temperature non-stick test, dynamic friction coefficient test, odor test, and anti-allergy test according to the following test procedures. The test results of each property are shown in Table 3.

(1) High temperature non-stick test: Five 1 kg weights were pressed on test gloves 1 to 5, respectively, and placed in a 72 ° C oven for 72 hours and taken out. After the removed test gloves, if the inner surfaces of the gloves are not adhered to each other, it is judged that the gloves are qualified in the high temperature non-sticking test.

(2) Slip test: Using the friction coefficient meter and testing the dynamic friction coefficient of the test gloves according to the ISO 8295 test standard, the detailed process is as follows: the test gloves are cut out of two 8 cm x 20 cm sheet samples, among which The test surface of one piece of the specimen faces upward and is flattened on the leveling test bench along the length parallel to the test bench; the test surface of the other sample covers the slider downward and the sample is fixed with tape. (friction coefficient meter parameters: load range -0 to 6 N; measurement accuracy -1 level; stroke --70 mm; work table size - 200 mm × 470 mm; slider quality - 200 ± 2 g; slider movement speed - 100 ± 5 mm / min; slider size - 63 mm × 63 mm) . When the dynamic friction coefficient is μ≦0.3, it means that the smoothness is “excellent”; when the dynamic friction coefficient is 0.3<μ≦0.5, it means that the smoothness is “good”; when the dynamic friction coefficient is μ>0.5, it means smoothness. Sex is bad.

(3) Odor test: Let the same tester wear the test gloves after 8 hours and take off the sensory evaluation of the tester, which is divided into 1 to 3 levels (level 1 - skin has a big smell; level 2 - The skin has a slight odor; and level 3 - the skin is odorless).

(4) Anti-allergy test: 10 testers were selected to wear test gloves continuously for 8 hours, and the test gloves were removed to observe the presence of red spots and itching. All 10 testers were qualified asymptomatic.

It can be seen from the test results of Table 3 that the polyurethane compositions of Examples 1 to 3 have excellent stability after dilution, are useful for utilization on the production line, and are resistant to high temperature, non-stickiness, smoothness, and odor. And the performance of anti-allergy is also in line with the needs of the industry.

In the composition of Comparative Example 1, a core-shell type polyacrylic resin having a particle diameter of 100 to 150 μm was used, although the composition was diluted to have better stability, and was resistant to high temperature, non-stickiness, odor and The anti-allergic performance meets the requirements, but the slipperiness is not good. It can be seen that although the core-shell polyacrylic resin of Comparative Example 1 has a particle size ranging from 70 to 250 μm , a good convex structure can be formed on the inner surface of the glove. The film layer, but the film feels poor, and can not improve the user's comfort when wearing gloves.

Further, the core-shell type polytetrafluoroethylene resin used in Comparative Example 2 has a particle diameter of 1 to 50 μm , but the stability after dilution is not good, which is unfavorable for industrial application, and a small particle size core. Shell-type PTFE resin is expensive, and the cost of the polyurethane composition is greatly increased. Therefore, although Comparative Example 2 is excellent in smoothness, it is difficult to apply because it is disadvantageous for utilization on the production line and non-conforming cost. Production line. Therefore, it can be confirmed from the above that the polyurethane composition of the present invention has high stability not only after dilution, but also contributes to the utilization on the production line, and when applied to the inner surface of the glove, the formed film layer has smoothness and The fluffy granule-like convex structure enables the glove to have good high temperature resistance, non-stickiness and smoothness, and has no odor and is not allergic.

In summary, when the polyurethane composition for surface treatment of the powder-free glove of the present invention is applied to the inner surface of the glove, the core-shell polyurethane compound is compatible with the aqueous polyurethane, the functional auxiliary and the solvent. Therefore, the polyurethane composition remains stable after dilution and does not cause delamination. Further, even if the core-shell type polyurethane compound used in the present invention has a particle diameter of 70 to 250 μm , the polyurethane composition of the present invention has good dispersibility and does not precipitate, resulting in delamination. Furthermore, the film layer formed by applying the polyurethane composition of the present invention on the inner surface of the glove has a smoothness, can make the user feel comfortable during wearing the glove, and the film layer also has a fluffy granular convex structure. It not only improves the adhesion of the inner surface of the glove, but also avoids the problem that the inner surface of the glove is sticky with the hand, which makes it easy for the user to put on and remove the glove, and is easy to wet during the wearing process. The gas is discharged, and at the same time, the sultry and sticky feeling is reduced.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are Still It is within the scope of the patent of the present invention.

Claims (9)

A polyurethane composition for surface treatment of a powder-free glove comprising: an aqueous polyurethane; a core-shell polymer having an average particle diameter ranging from 70 to 250 μm ; a functional auxiliary; and a solvent, wherein the core-shell type The polymer includes a core-shell type polyurethane compound. The polyurethane composition for surface treatment of powder-free gloves according to claim 1, wherein the total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the amount of the core-shell polymer used is 0.5 to 5 wt%. The polyurethane composition for surface treatment of powder-free gloves according to claim 2, wherein the total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the aqueous polyurethane is used in an amount ranging from 40 to 76.5. Wt%. The polyurethane composition for surface treatment of powder-free gloves according to claim 3, wherein the total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the functional additive is used in an amount ranging from 13 to 49.5 wt%. The polyurethane composition for surface treatment of powder-free gloves according to claim 4, wherein the total amount of the polyurethane composition for surface treatment of the powder-free glove is 100 wt%, and the solvent is used in an amount ranging from 10 to 40 wt. %. The polyurethane composition for surface treatment of powder-free gloves according to claim 1, wherein the aqueous polyurethane has a weight average molecular weight ranging from 30,000 to 50,000. The polyurethane composition for surface treatment of powder-free gloves according to claim 1, wherein the aqueous polyurethane is obtained by polymerization of a mixture, and the mixture comprises a polymer polyol, a polyisocyanate, an environment-friendly solvent, and ionization. Reagents, neutralizers, chain extenders and deionized water. The polyurethane composition for surface treatment of powder-free gloves according to claim 7, wherein the environment-friendly solvent is selected from the group consisting of dimethylacetoneamine, diethylene glycol monomethyl ether, propylene glycol monomethyl ether, and diethylene glycol. Monopropyl ether, or a combination of these. The polyurethane composition for surface treatment of powder-free gloves according to claim 7, wherein the polymer polyol is used in an amount ranging from 15 to 25 wt%, based on the total amount of the mixture of 100 wt%, the polyisocyanate The use amount ranges from 5 to 20 wt%, the environmentally friendly solvent is used in an amount ranging from 3 to 15 wt%, the ionizing agent is used in an amount ranging from 1 to 3 wt%, and the range of the chain extender is 1.2 to 3 wt%, the neutralizing agent is used in an amount ranging from 1 to 3 wt%, and the deionized water is used in an amount ranging from 53 to 65 wt%.