KR20140120987A - Method for preparing compositions for dip-forming, dip-forming product and mehtod for preparing thereof - Google Patents

Abstract

The present invention relates to a method for preparing a composition for dip molding, a dip-molded product, and a method for manufacturing the dip-molded product. The present invention can provide a composition for allowing the manufacture of a dip-molded product without using sulfur and a vulcanization accelerator; can raise productivity by skipping long periods of stirring and aging processes during the manufacturing of the dip-molded product; and can solve the problems due to side effects caused by the existing sulfur and vulcanization accelerator.

Description

TECHNICAL FIELD The present invention relates to a dip-formed article, a dip-formed article, and a dip-

More particularly, the present invention relates to a composition capable of producing a dip-molded article while the sulfur and the vulcanization accelerator are not used, and to provide a method for producing a dip- To a method of manufacturing a dip molding composition, a dip molded article and a method of manufacturing the same, which can solve the problems caused by side effects caused by conventional sulfur and vulcanization accelerators.

Rubber gloves are used in a wide range of fields such as housework, food industry, electronics industry, and medical field. Although rubber gloves made by dip molding of natural rubber latex have been widely used, the proteins contained in natural rubber have been problematic because they caused allergic reactions such as pain and rash to some users. A synthetic rubber latex which does not cause an allergic reaction, for example, a latex composition comprising a carboxylic acid-modified nitrile-based copolymer latex such as an acrylic acid-acrylonitrile-butadiene copolymer latex and sulfur and a vulcanization accelerator Many gloves were used.

However, in the process of producing such gloves, there is a problem that the productivity is lowered because the sulfur and the vulcanization accelerator are mixed in the latex and then subjected to a long stirring aging process for 24 hours or more. In addition, rubber gloves containing sulfur and a vulcanization accelerator as essential components can produce a substance that causes an unpleasant odor by the chemical reaction between the sulfur and the vulcanization accelerator and the functional groups in the carboxylic acid modified nitrile-based copolymer latex, and the glove color There is a problem that the product value is lowered due to discoloration, and allergic reactions are caused to some users to cause stinging.

As a related prior art, Japanese Patent Application Laid-Open No. 2006-321955 discloses a method of obtaining a deep-molded product without using sulfur and a vulcanization accelerator by using a latex composition for dip molding comprising a conjugated diene rubber latex and an organic peroxide, However, the organic peroxide solution is very harmful to the human body, and it is not safe because of the risk of fire and explosion when heat or shock is applied to the glove.

In addition, U.S. Patent No. 7,345,111 discloses a glove which does not cause a long stirring aging process and does not cause an allergic reaction caused by sulfur and a vulcanization accelerator by using a crosslinkable monomer in the acrylic emulsion latex. However, the acrylic glove is too sensitive to temperature have.

Thus, it is possible to prevent unpleasant odor from being generated by the sulfur and vulcanization accelerator in the carboxylic acid modified nitrile-based copolymer latex polymerization process, to provide a molded article having high oil resistance and mechanical strength and soft touch without causing any allergic reaction such as discoloration or tingling There is a need for a method for producing a composition for deep-molding which can exclude a long-time agitation / aging step that can lower the productivity and further deteriorate the productivity.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to prevent generation of an unpleasant smell caused by sulfur and a vulcanization accelerator during the polymerization process of the carboxylic acid modified nitrile- And a method for manufacturing a composition for deep molding that does not cause an allergic reaction and can provide a molded article having a high oil resistance and mechanical strength and a soft touch, and can also exclude a long stirring / aging process that lowers productivity.

Another object of the present invention is to provide a dip molded article and a method for producing the same, from the composition for dip molding obtained from the above method.

In order to achieve the above object,

(A) a step of emulsion-polymerizing a monomer mixture of a conjugated diene monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer to obtain a carboxylic acid-modified nitrile-based copolymer latex; And (b) preparing a composition for deep molding comprising the latex; Respectively,

The aziridine compound may be added either before the polymerization of the monomer mixture of step (a) (B) is added to the monomer mixture, or (c) is added to the dip molding composition of (b).

According to the present invention, there is also provided a dip-formed article produced by dip-molding a composition for dip molding produced by the above-described method.

Further,

a) applying a coagulant solution to the mold and drying; b) applying a dip molding composition prepared by the above method as a composition for dip molding to a mold to which a coagulant is applied to form a dip molding layer; c) crosslinking said dip molding layer; And d) peeling the cross-linked dip-formed layer from the mold to obtain a dip-molded article.

Hereinafter, the present invention will be described in detail.

Specifically, the method for producing a dip molding composition according to the present invention is a method for producing a dip-molding composition by emulsion-polymerizing a monomer mixture of a conjugated diene monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer to obtain a carboxylic acid-modified nitrile- (A); And (b) preparing a composition for deep molding comprising the latex; , Wherein the aziridine compound is added to the monomer mixture of step (a) before or during the polymerization of the monomer mixture (C) adding to the monomer mixture or adding it to the dip molding composition of (b).

The aziridine compound replaces sulfur and a vulcanization accelerator, and can perform a role of omitting a stirring / aging step, which is usually required for a long time in the step (a).

For example, the reactive compound or derivative thereof having one, two, or three or more aziridine groups may be used, and specific examples thereof include reactive compounds having one to three aziridine groups or derivatives thereof.

In another example, a 2-methylaziridine, N-tosylaziridine, phenyl aziridine, diphenyl aziridine, 3-isobutyl aziridine- May be at least one selected from 3-isobutyl aziridine-2-carboxaldehyde dimer, DSM (trade name) Neocryl X-100, polyaziridine LLC (trade name) PZ-28 and PZ-33.

The aziridine compound may be added in an amount of 0.1 to 5 parts by weight, 0.1 to 3 parts by weight, or 0.5 to 3 parts by weight based on 100 parts by weight of the monomer mixture in the step (a). When the amount is less than the above range, the tensile strength of the dip-molded article may be lowered, and when the range is exceeded, the feel and feel of wearing may become poor.

Wherein the monomer mixture of step (a) comprises 40 to 90% by weight of a conjugated diene monomer; 9 to 50% by weight of an ethylenically unsaturated nitrile-based monomer; And 0.1 to 10% by weight of an ethylenic unsaturated acid monomer.

The amount of the conjugated diene monomer may be 40 to 90% by weight, 40 to 80% by weight or 45 to 80% by weight in the monomer mixture. If the content is too small, the latex resin molded article may become hard and worn, , The oil resistance of the latex resin molded article may deteriorate and the tensile strength may be lowered.

Examples of the conjugated diene-based monomer include one or more kinds selected from the group consisting of 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3- Or more.

The content of the ethylenically unsaturated nitrile monomer may be 9 to 50% by weight, 9 to 45% by weight or 15 to 45% by weight in the monomer mixture. If the content is too small, the oil resistance of the latex resin molded article may deteriorate, May be lowered, and if it is excessive, the molded article may become hard and the wearing feeling may be poor.

The ethylenically unsaturated nitrile-based monomer may be at least one selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile,? -Chloronitrile and? -Cyanoethyl acrylonitrile.

The content of the ethylenically unsaturated acid monomer may be 0.1 to 10% by weight, 0.5 to 9% by weight, or 1 to 8% by weight in the monomer mixture. If the content is too small, the tensile strength of the latex resin molded article may be lowered , The latex resin molded article may become hard and the wearing feeling may be poor.

The ethylenic unsaturated acid monomer may be an ethylenic unsaturated monomer containing an acidic group such as a carboxyl group, a sulfonic acid group, or an acid anhydride group, and specific examples thereof include ethylene, propylene, butylene, and the like, such as acrylic acid, methacrylic acid, itaconic acid, Unsaturated carboxylic acid monomers; Polycarboxylic anhydrides such as maleic anhydride and citraconic anhydride; Ethylenically unsaturated sulfonic acid monomers such as styrenesulfonic acid; Ethylenically unsaturated polycarboxylic acid partial ester monomers such as monobutyl fumarate, monobutyl maleate, mono-2-hydroxypropyl maleate, and the like. Another example is a copolymer of 1, 2, 3, 4, 5, 6, 7, or 10 members from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleic anhydride, citraconic anhydride, styrenesulfonic acid, monobutyl fumarate, monobutyl maleate and mono-2- More than species can be selected.

In addition, the monomer mixture of step (a) may include an ethylenically unsaturated monomer as the monomer copolymerizable with the ethylenically unsaturated nitrile monomer and the ethylenic unsaturated acid monomer.

Examples of the ethylenic unsaturated monomer include vinyl aromatic monomers such as styrene, alkyl styrene, and vinyl naphthalene; Fluoroalkyl vinyl ethers such as fluoro ethyl vinyl ether; (Meth) acrylamide, N, N-dimethylol (meth) acrylamide, N-methoxymethyl (meth) acrylamide, N-propoxymethyl Ethylenically unsaturated amide monomers; Vinyl pyridine; Vinylnorbornene; Nonconjugated diene-based monomers such as dicyclopentadiene and 1,4-hexadiene; (Meth) acrylic acid esters such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, trifluoroethyl Butyl methacrylate, diethyl maleate, methoxymethyl (meth) acrylate, ethoxyethyl (meth) acrylate, methoxyethoxyethyl (meth) acrylate, cyanomethyl (meth) acrylate, 2-cyanoethyl (Meth) acrylate, 1-cyanopropyl (meth) acrylate, 2-ethyl-6-cyanoohexyl (meth) acrylate, 3-cyanopropyl (meth) acrylate, hydroxyethyl (meth) acrylate, Ethylenically unsaturated carboxylic acid ester monomers such as glycidyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, and the like.

The content of the ethylenically unsaturated monomer may be 0.1 to 20 parts by weight, 0.1 to 18 parts by weight, or 0.5 to 18 parts by weight based on 100 parts by weight of the total amount of the monomer mixture, and the balance between the soft feeling and the tensile strength .

In the polymerization of the monomer mixture in the step (a), an emulsifier, a polymerization initiator, a molecular weight regulator or a mixture thereof may be further emulsion-polymerized. The emulsion polymerization may be carried out by conventional emulsion polymerization.

The method of adding the monomer mixture is not particularly limited, and a method of charging the monomer mixture into the polymerization reactor at one time, a method of continuously introducing the monomer mixture into the polymerization reactor, a method of charging a part of the monomer mixture into the polymerization reactor, Or a method of continuously supplying the solution to the solution.

The polymerization temperature is not particularly limited, but may be, for example, 10 to 90 ° C, 15 to 80 ° C, or 25 to 75 ° C.

The emulsion polymerization may include commonly used materials such as emulsifiers, polymerization initiators, and molecular weight regulators.

The emulsifier is not particularly limited, and for example, an anionic surfactant, a nonionic surfactant, a cationic surfactant, a positive surfactant and the like can be used. Of these, anionic surfactants such as alkylbenzenesulfonic acid salts, aliphatic sulfonic acid salts, sulfuric acid ester salts of higher alcohols,? -Olefin sulfonic acid salts and alkyl ether sulfuric acid ester salts can be preferably used. The amount of the emulsifier to be used is, for example, 0.3 to 10 parts by weight, 0.3 to 8 parts by weight or 0.8 to 8 parts by weight based on 100 parts by weight of the total monomer.

The polymerization initiator is not particularly limited, but a radical initiator can be preferably used. Examples of the radical initiator include inorganic peroxides such as sodium persulfate, potassium persulfate, ammonium persulfate, potassium persulfate, and hydrogen peroxide; t-butyl peroxide, cumene hydroperoxide, p-menthol hydroperoxide, di-t-butyl peroxide, t-butyl cumyl peroxide, acetyl peroxide, isobutyl peroxide, octanoyl peroxide, dibenzoyl peroxide Organic peroxides such as oxides, 3,5,5-trimethylhexanol peroxide, t-butyl peroxyisobutyrate; Nitrogen compounds such as azobisisobutyronitrile, azobis-2,4-dimethylvaleronitrile, azobiscyclohexanecarbonitrile, and azobisisobutyric acid (butyl acid) methyl. These polymerization initiators may be used alone or in combination of two or more.

Among these radical initiators, inorganic or organic peroxides are preferably used, inorganic peroxides are more preferable, and persulfates are particularly preferably used.

The amount of the polymerization initiator to be used is, for example, 0.01 to 2 parts by weight, 0.01 to 1.5 parts by weight, or 0.02 to 1.5 parts by weight based on 100 parts by weight of the total monomer.

Examples of the molecular weight regulator include, but are not limited to, mercaptans such as? -Methylstyrene dimer, t-dodecyl mercaptan, n-dodecyl mercaptan, and octyl mercaptan; Halogenated hydrocarbons such as carbon tetrachloride, methylene chloride, and methylene bromide; Sulfur-containing compounds such as tetraethylthiuram disulfide, dipentamethylenediamine disulfide, and diisopropylkisantigen disulfide.

These molecular weight modifiers can be used alone or in combination of two or more. Of these, mercaptans are preferable, and t-dodecyl mercaptan can be more preferably used.

The amount of the molecular weight modifier to be used varies depending on the kind thereof, but may be 0.1 to 0.9 parts by weight, 0.1 to 0.7 parts by weight, or 0.2 to 0.7 parts by weight based on 100 parts by weight of the total monomer.

In polymerization of the latex resin of the present invention, auxiliary materials such as a chelating agent, a dispersant, a pH adjuster, an oxygen scavenger, a particle size regulator, an anti-aging agent, and an oxygen scavenger may be used as needed.

If necessary, the polymerization reaction may be terminated, the unreacted monomer may be removed, and the concentration of the solid component or pH may be adjusted to obtain the latex resin of the present invention.

The step (b) may be carried out by adding to the latex 80 to 99% by weight at least one kind selected from the group consisting of a vulcanizing agent, an ionic crosslinking agent such as zinc oxide, a pigment such as titanium oxide, a filler such as silica, 20 to 1% by weight of the composition. Further, the method may further comprise adjusting the composition obtained in the step (b) to a pH of 8 to 12, or a pH of 9 to 11.

In the present invention, it is possible to provide a dip molded article produced by dip-molding the composition for dip molding produced by the above method. The dip-molded article may be, for example, a surgical glove, a test glove, a condom, a catheter, an industrial glove, a household glove, or a health care product.

(A) immersing a hand shaped dip forming mold in a coagulant solution to attach a coagulant to the surface of the dip forming mold; (b) immersing the deep molding die with the coagulant attached thereto in the deep molding composition to form a dip molding layer; And (c) crosslinking the latex resin by heat-treating the dip molding layer formed in the dip molding die.

As a method of producing a dip molded article using the latex resin composition of the present invention, a usual method can be used. For example, a direct dipping method, an anode adhesion dipping method, a Teague adhesion dipping method, . Of these, the positive electrode deposition dipping method is preferable because of the advantage of easily obtaining a dip-shaped article having a uniform thickness.

The coagulant may be selected from the group consisting of barium chloride, calcium chloride, magnesium chloride, zinc chloride, aluminum chloride, barium nitrate, calcium nitrate, zinc nitrate, barium acetate, calcium acetate, zinc acetate, calcium sulfate, magnesium sulfate, It may be at least one selected. The coagulant may be dissolved in water, alcohol or a mixture thereof.

According to the present invention, it is possible to provide a latex resin composition capable of producing rubber gloves without adding sulfur and a vulcanization accelerator. By using the latex resin composition, it is possible to reduce adverse effects caused by conventional sulfur and vulcanization accelerators It is possible to provide rubber gloves of excellent physical properties.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Changes and modifications may fall within the scope of the appended claims.

[Example]

Example  One

Carboxylic acid-modified nitrile-based copolymer latex Preparation step (a)

21 parts by weight of acrylonitrile, 1 part by weight of 1,3-butadiene 74 parts by weight of methacrylic acid, 5 parts by weight of methacrylic acid, 0.5 parts by weight of tert-dodecylmercaptan, 2.3 parts by weight of sodium dodecylbenzenesulfonate, 140 parts by weight of water and 1 part by weight of Neocryl X-100 (DSM) The temperature was raised to 40 ° C to initiate polymerization.

When the conversion reached 65%, the temperature was elevated to 70 ° C to proceed the polymerization. When the conversion reached 94%, 0.2 part by weight of sodium dimethyldithiocarbamate was added to terminate the polymerization.

Unreacted monomers were removed through a deodorization process, and ammonia water, an antioxidant, a defoaming agent and the like were added to obtain a carboxylic acid modified nitrile copolymer latex resin having a solid concentration of 44.5% and a pH of 8.0.

Step (b) of preparing the composition for deep-

Zinc oxide, titanium oxide, a 5% potassium hydroxide solution and an appropriate amount of secondary distilled water were added to the latex resin obtained in the step (a) to obtain a composition for dip molding with a solid concentration of 30% and a pH of 9.5.

Dip molded article manufacturing step

22 parts by weight of calcium nitrate, 69.5 parts by weight of methanol, 8 parts by weight of calcium carbonate and 0.5 part by weight of wetting agent (Teric 320, Huntsman Corporation, Australia) were mixed to prepare a coagulant solution.

A hand-shaped ceramic mold was immersed in the solution for 1 minute, pulled out, and dried at 70 ° C. for 3 minutes to coat the coagulant onto the hand mold.

Next, the mold to which the coagulant was applied was immersed in the above-described composition for deep molding for 1 minute, pulled up, dried at 70 ° C for 1 minute, and then immersed in water or hot water for 3 minutes to leach. The mold was again dried at 70 DEG C for 3 minutes and then crosslinked at 125 DEG C for 20 minutes. The crosslinked dip molding layer was peeled off from the hand mold to obtain a glove-shaped dip molded article. The physical properties of the dip-molded product are shown in Table 1 below.

Example  2

Except that 1 part by weight of Neocryl X-100 ( manufactured by DSM) was not used in the step (a) of preparing the carboxylic acid-modified nitrile-based copolymer latex in Example 1, and that the mixture was added in the step (b) In the same manner as in Example 1, a glove-shaped dip-molded article was produced. The physical properties of the dip-molded article are shown in Table 1 below.

Example  3

A glove-shaped dip product was prepared in the same manner as in Example 2, except that 1 part by weight of Neocryl X-100 (DSM) was replaced with 2.2 parts by weight of diphenylaziridine in Example 2, The physical properties of the molded article are shown in Table 1 below.

Example  4

In the same manner as in Example 1 except that 1 part by weight of Neocryl X-100 (manufactured by DSM) was replaced with 1.5 parts by weight of 2-methylaziridine in Example 1, a glove-shaped deep- , And the physical properties of the dip-molded product are shown in Table 1 below.

Comparative Example  One

In the same manner as in Example 1, except that 1 part by weight of Neocryl X-100 ( manufactured by DSM) was not used in the step (a) of preparing a carboxylic acid-modified nitrile-based copolymer latex in Example 1, a glove- The physical properties of the dip-molded product are shown in Table 1 below.

Comparative Example  2

A glove-shaped dip molded article was prepared in the same manner as in Example 2, except that 1 part by weight of Neocryl X-100 ( manufactured by DSM Corp.) was not used in the step (b) for preparing a dip molding composition in Example 2, The physical properties of the dip-molded article are shown in Table 1 below.

 [Test method]

The physical properties of the obtained dip-molded article were evaluated by the following method.

One. Elongation rate  Stress at 300% ( Modulus at  300%), The tensile strength ( Tensile strength ), Elongation ( Elongation  How to measure

A dumbbell-shaped test piece was produced from the dip-molded product in accordance with ASTM D-412. Subsequently, the test piece was pulled at a stretching speed of 500 mm / min, and the stress at the elongation percentage of 300%, the tensile strength at the elongation, and the elongation at breakage were measured.

2. Stress retention ratio ( Tensile strength retention ) How to measure

Stretching was stopped at both ends of the dumbbell-shaped specimen at a speed of 500 mm / minute and the standard section of the specimen was stretched to 40 mm. The stress M100 (0) was measured at this point and the stress Measure M100 (6).

The value of M100 (6) for M100 (0) is calculated as a percentage, and this value is defined as the stress retention rate. If the stress retention rate is 50% or more, the fit property is excellent.

3. Glove condition

The glove condition was relatively evaluated considering the basic physical properties of the gloves, pinhole generation, and stickiness.

Tensile Strength (MPa) Elongation (%) Modulus at 300% (MPa) Glove condition Example 1 25 652 3.3 Good Example 2 27 633 4.1 Good Example 3 24 646 3.5 Good Example 4 25 626 4.3 Good Comparative Example 1 9.3 714 2.5 Poor Comparative Example 2 10.5 686 2.8 usually

As shown in Table 1, according to Examples 1 to 4 of the present invention, it was possible to produce gloves of excellent physical properties without sulfur and vulcanization accelerator, and there was not much difference in physical properties compared to the control group in which a long stirring aging process was performed during the glove manufacturing process It is possible to provide an advantage that the productivity is improved since the stirring and aging step is not required.

On the other hand, in the case of Comparative Examples 1 and 2 in which no aziridine compound was used, it was impossible to produce a glove in a good state without sulfur and a vulcanization accelerator. This is also attributed to the lack of reactive aziridine compounds or sulfur and vulcanization accelerators, which do not have sufficient strength for use because no cross-linking of the gloves occurs, or a long aging and aging process has not been carried out.

Claims (15)

(A) a step of emulsion-polymerizing a monomer mixture of a conjugated diene monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer to obtain a carboxylic acid-modified nitrile-based copolymer latex; And (b) preparing a composition for deep molding comprising the latex; Respectively,
The aziridine compound may be added either before the polymerization of the monomer mixture of step (a) (B) is added to the monomer mixture, or (c) is added to the dip molding composition of (b).
The method according to claim 1,
Wherein the aziridine compound is 0.1 to 5 parts by weight based on 100 parts by weight of the monomer mixture.
The method according to claim 1,
Wherein the aziridine compound is a compound having 1 to 3 aziridine groups or a derivative thereof.
The method according to claim 1,
The aziridine compound may be selected from the group consisting of 2-methylaziridine, N-tosylaziridine, phenyl aziridine, diphenyl aziridine, 3-isobutyl aziridine 2-carboxaldehyde dimer, DSM (trade name) Neocryl X-100, polyaziridine LLC (trade name) PZ-28 and PZ-33. A method for producing a composition for dip molding.
The method according to claim 1,
Wherein the monomer mixture of step (a) comprises 40 to 90% by weight of a conjugated diene monomer; 9 to 50% by weight of an ethylenically unsaturated nitrile-based monomer; And 0.1 to 10% by weight of an ethylenic unsaturated acid monomer.
The method according to claim 1,
The monomer mixture of step (a) comprises 0.1 to 20 parts by weight of an ethylenically unsaturated monomer as a monomer copolymerizable with the ethylenically unsaturated nitrile monomer and the ethylenically unsaturated acid monomer, based on 100 parts by weight of the monomer mixture By weight based on the total weight of the composition.
The method according to claim 1,
The conjugated diene monomer may be at least one selected from the group consisting of 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene and isoprene By weight based on the total weight of the composition.
The method according to claim 1,
Wherein the ethylenically unsaturated nitrile monomer is at least one selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile,? -Chloronitrile and? -Cyanoethyl acrylonitrile. ≪ / RTI >
The method according to claim 1,
Wherein said ethylenically unsaturated acid monomer is selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, maleic anhydride, citraconic anhydride, styrenesulfonic acid, monobutyl fumarate, monobutyl maleate and mono-2-hydroxypropyl maleate Lt; RTI ID = 0.0 > 1, < / RTI >
The method according to claim 1,
(B) comprises the step of containing 20 to 1% by weight of at least one selected from the group consisting of a vulcanizing agent, an ionic crosslinking agent, a pigment, a filler, a thickener and a dispersing agent in an amount of 80 to 99% by weight of the latex By weight based on the total weight of the composition.
The method according to claim 1,
And adjusting the composition obtained in the step (b) to a pH of 8 to 12.
A dip-formed article produced by dip-molding a composition for dip molding produced by the method of any one of claims 1 to 11.
13. The method of claim 12,
Wherein the dip-molded article is a surgical glove, a test glove, a condom, a catheter, an industrial glove, a household glove or a health care product.
a) applying a coagulant solution to the mold and drying;
b) applying a deep-molding composition prepared by the method of any one of claims 1 to 12 as a dip molding composition to a mold to which a coagulant is applied to form a dip molding layer;
c) crosslinking said dip molding layer; And
d) stripping the cross-linked dip-formed layer from the mold to obtain a dip-formed article.
15. The method of claim 14,
Wherein the coagulant solution is a solution in which the coagulant is dissolved in water, an alcohol or a mixture thereof.