JPS61160403A - Moisture permeable oil resistant working glove - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to work gloves that are flexible, have excellent workability, and have excellent moisture permeability and oil resistance.

(Prior art) Conventionally, work gloves have been made of plastic films such as polyethylene, polypropylene, vinyl chloride resin, etc.
Various types of work gloves are used, which are made by laminating two sheets together.

(Problems to be Solved by the Invention) The above-mentioned conventional work gloves made of plastic film lack oil resistance, flexibility, and comfort, and the texture is poor especially when used in cold regions. It becomes extremely hard, its flexibility decreases, and its strength is inferior to 1.

In order to solve the above-mentioned drawbacks, work gloves made of polyurethane resin film have been proposed, but like the above-mentioned work gloves made of plastic film, work gloves made of polyurethane resin film lack moisture permeability. Immediately after wearing the gloves, a feeling of stuffiness due to sweating occurs, which makes them very uncomfortable to wear, and in some cases, the gloves slip during work due to sweat, which also poses a safety problem.

In addition, in recent years, the fields in which work gloves are used are expanding more and more, such as work gloves for IC manufacturing and medical work gloves. There is a strong demand for the development of work gloves having excellent moisture permeability and oil resistance that do not cause the various problems described above.

As a result of intensive research in order to solve the above-mentioned drawbacks of the prior art, the inventor of the present invention has found that in selecting a film made of a specific material to form work gloves, the above-mentioned drawbacks of the prior art have been solved. The present invention was completed based on the knowledge that the problem can be solved.

(Means for Solving the Problems) That is, the present invention consists of stacking two water-insoluble and hydrophilic polyurethane resin films having hydrophilic groups and/or woodophilic segments in the main chain and/or in the side chains. , a moisture-permeable and oil-resistant work glove that is pasted onto a handprint.

Next, to explain the present invention in more detail, the polyurethane resin film used in the present invention and which mainly characterizes the present invention has hydrophilic groups and/or hydrophilic groups in its main chain and/or side chain. It is molded by a known method from a water-insoluble and hydrophilic polyurethane resin having segments, and by using such a specific polyurethane resin film in the production of work gloves, the present inventors are able to replace the prior art plastics. Disadvantages of film gloves: oil resistance, flexibility, comfort, flexibility,
It was discovered that problems such as strength could be solved, and at the same time, the moisture permeability, which was a drawback of conventional work gloves made of polyurethane resin film, could be solved, and work gloves with excellent moisture permeability and oil resistance could be obtained. This is what I did.

The above-mentioned specific polyurethane resin is produced by introducing hydrophilic groups such as hydroxyl groups, carboxyl groups, sulfonic acid groups, amide groups, or their bases into the side chains of the resulting polyurethane resin in the production of conventionally known polyurethane resins. Alternatively, it can be obtained by introducing a hydrophilic segment such as a polyoxyethylene chain into the main chain.

According to detailed research by the present inventors, the polyurethane resin obtained by introducing the above-mentioned wood-philic groups and/or wood-philic segments into the polyurethane resin,
Depending on the amount introduced, the polyurethane resin becomes hydrophilic and eventually becomes water-soluble. However, the polyurethane resin useful in the present invention is produced by limiting the amount of wood-loving groups and/or segments introduced. It needs to be hydrophilic to the extent that it has sufficient water resistance, that is, it needs to be water-insoluble and hydrophilic. In the present invention, it has been discovered that such a water-insoluble and hydrophilic polyurethane resin has sufficient oil resistance when formed into a film, and also has unexpectedly excellent moisture permeability. It is something. The water-insoluble and hydrophilic properties of such polyurethane resins vary significantly depending on the type of woodphilic groups and/or hydrophilic segments introduced, so the amount of these hydrophilic groups and/or hydrophilic segments introduced depends on the amount of hydrophilic groups and/or hydrophilic segments introduced. Although it cannot be absolutely defined, the introduction of hydrophilic groups and/or woodphilic segments can be easily carried out using conventionally known techniques, and the amount of introduction can be very easily adjusted. A person skilled in the art can easily determine the preferable amount of the wood-loving segment introduced experimentally.

and can be determined.

The method for introducing the hydrophilic group and/or hydrophilic segment can be carried out according to any known method.
For example, a preferred method for introducing a hydrophilic group into a side chain is to add various hydrophilic group-containing monomers to a hydrophobic polyurethane resin, such as (meth)acrylic acid, (meth)
Polyol mono(meth)acrylate consisting of acrylic acid and polyol, (meth)acrylate having 7 amino groups (for example, N-mono or dialkyl ethyl (meth)
acrylate), polyethylene glycol (meth)acrylate, (meth)acrylic acid amide, their methylol derivatives, aminostyrene, sulfonated styrene, vinylsulfonic acid, vinylpyridine, vinylquinoline, and various other hydrophilic group-containing vinyl monomers. There is a method of graft polymerization, and a preferred method for introducing a hydrophilic group segment into the main chain is to use polyethylene glycol as all or a part of the polyol that is the raw material for polyurethane resin, or to use polyethylene glycol as a raw material for polyurethane resin. A method using a polyester polyol made of a polyhydric carboxylic acid can be mentioned.

The above examples are preferred examples in the present invention, and other known hydrophilic modification methods can be similarly utilized.

The method of forming the polyurethane resin film used in the present invention from the water-insoluble and hydrophilic polyurethane resin described above may be a conventionally known method, such as an extrusion inflation method, a calendar method, a method of coating on a female pattern paper and peeling it off, etc. can be used.

If the film made of such a polyurethane resin is too thick, the moisture permeability, which is the main objective of the present invention, will decrease, and if it is too thin, problems with other properties such as strength will occur, so the preferred thickness is , about 0. OLII
A range of 1 m to 1 cm is suitable, and by setting this thickness, a desirable moisture permeability, for example, about 2.000 to 1 cm, can be achieved.
5,000 (g/rn' according to JISZ-0208B
/24 hrs) and other excellent oil resistance and other performances.

Further, in the present invention, it is a matter of course that the polyurethane resin film used can contain colorants, antioxidants, plasticizers, anti-aging agents and other various conventionally known additives.

The method for forming the work gloves of the present invention from the specific polyurethane resin film as described above can be carried out using the conventional method for manufacturing work gloves made of plastic film.
For example, by stacking two polyurethane resin films as described above and pressing them with a heat sealer having a heating end corresponding to the outer periphery of the glove, the two films are heat-sealed into a glove shape, that is, thermally fused. The most preferable method is to cut it into a glove shape at the same time. Of course, in such heat sealing, various conventionally known adhesives may be used in combination. Another method is to overlap two pieces of polyurethane resin film cut into a hand shape,
Any method such as bonding with an adhesive or heat sealing can be used.

(Function/Effect) According to the present invention as described above, the oil resistance, flexibility, wearing comfort, and especially strength in cold regions, which have been disadvantages of conventionally known plastic films or polyurethane resin film work gloves, can be improved. To provide work gloves with excellent moisture permeability and oil resistance that solve problems such as moisture permeability, etc., at low cost.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 Polytetramethylene glycol (PTG) molecular weight 2.0
130 parts of 00, polyethylene glycol (PEG
) 20 parts of molecular weight 2.000, 10 parts of 1,4 butanediol (1,4BD) and 50 parts of water-added MDI,
The reaction was carried out at 100°C for 10 hours, and the product was diluted to 25% with a mixed solvent of dimethylformamide/toluene = 70/30. This solution is applied onto release paper to a dry thickness of about 0.1 m+a, dried to form a polyurethane resin film, and two sheets of this film are stacked to form the heated end of the handprint. 200 with heat sealer
The gloves were heat-sealed at 0.degree. C. and simultaneously fused to obtain moisture-permeable and oil-resistant work gloves of the present invention.

Example 2 1.4 butane ethylene adipate (1,4BD/EG
= 50150 molar ratio) 100 with molecular weight 2,000
parts, PTG (molecular weight 2,000) 30 parts, PEG (molecular weight 2,000) 20 parts, 1°4B010 parts and MD
A polyurethane resin was synthesized by reacting 50 parts of I at 70° C. for 7 hours.

This polyurethane resin was formed into a film having a thickness of 0.05 IIm by an extrusion inflation method, and using this film, a moisture permeable and oil resistant work glove of the present invention was obtained in the same manner as in Example 1.

Comparative Example 1 1.4 Butane Fist Ethylene Adipate (1,4BD/EG
= 50150 molar ratio) 150 with a molecular weight of 2,000
Part, EGlS part and 50 parts of MD I were reacted at 70°C for 5 hours, then at 90°C for 2 hours, and diluted to 30% with a mixed solvent of dimethylformamide/methyl ethyl ketone = 60/40. Comparative work gloves were obtained in the same manner as in Example 1 using this solution.

The moisture permeability and wearing comfort of the work gloves of the above Examples and Comparative Examples were as shown in the table below.

Toru-Ichi no Toku π ('B4ν") Wearing feeling example 1 2,000-2,500
@Example 2 3,000-3,500
0 Comparative example 300-500
Good condition of Å or more is marked as ■, good condition of 5 Å or more is marked as Δ, good case of 013 angstrom or more is marked as Δ, and case of 0 persons is marked as ×.

Claims (1)

[Claims] (1) Moisture-permeable and oil-resistant work in which two water-insoluble and hydrophilic polyurethane resin films having hydrophilic groups and/or hydrophilic segments in the main chain and/or side chains are laminated and bonded to a handprint. gloves.