WO2016064173A1 - 카르본산 변성 니트릴계 공중합체 라텍스를 포함하는 딥 성형용 라텍스 조성물 및 이로부터 제조된 딥 성형품 - Google Patents
카르본산 변성 니트릴계 공중합체 라텍스를 포함하는 딥 성형용 라텍스 조성물 및 이로부터 제조된 딥 성형품 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/04—Macromolecular materials
- A61L29/041—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
- A61L29/042—Rubbers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/048—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
- A61L31/049—Rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/42—Nitriles
- C08F220/44—Acrylonitrile
- C08F220/46—Acrylonitrile with carboxylic acids, sulfonic acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L13/00—Compositions of rubbers containing carboxyl groups
- C08L13/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
- C08L15/005—Hydrogenated nitrile rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
- C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
- C08L71/12—Polyphenylene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
- C08L9/04—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/12—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with nitriles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2313/00—Characterised by the use of rubbers containing carboxyl groups
- C08J2313/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2413/00—Characterised by the use of rubbers containing carboxyl groups
- C08J2413/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Definitions
- the present invention relates to a latex composition for dip molding comprising two different carboxylic acid-modified nitrile copolymer latexes, and to a dip molded article having excellent durability against sweat and high tensile strength and elongation rate.
- Rubber gloves used in various fields such as household, food, electronics, and medical fields have usually been made by molding natural rubber.
- Synthetic rubber latex that does not cause allergic reactions such as rubber gloves made by dip molding latex compositions containing sulfur and vulcanization accelerators to carboxylic acid-modified nitrile copolymer latexes such as acrylic acid-acrylonitrile-butadiene copolymer latex are widely used. It is used.
- Rubber gloves made by combining sulfur and a vulcanization accelerator have good durability such that sulfur forms crosslinks between polymer chains so that the rubber gloves are not easily broken even if the rubber gloves are used for a long time, and the strength of the rubber gloves can be improved.
- rubber gloves when rubber gloves are manufactured using sulfur and vulcanization accelerators, they have to undergo a long stirring aging process of 24 hours or more, and thus there is a problem in that productivity is lowered.
- rubber gloves containing sulfur and vulcanization accelerators as essential ingredients may cause unpleasant odors or discoloration of rubber gloves when worn over a long period of time, resulting in a decrease in product value, causing allergic reactions to some users.
- skin abnormalities such as tingling.
- the inventors of the present invention have been studying dip molded articles (eg, rubber gloves) having excellent durability without using a sulfur and vulcanization accelerator and requiring a long stirring aging process.
- the present invention has been made by confirming that a dip molded product (eg, rubber gloves) is produced from a latex composition for dip molding including a carboxylic acid-modified nitrile copolymer latex having a particle diameter (for example, latex B), and exhibiting excellent tensile strength, elongation and durability. Was completed.
- Patent Document 1 KR2014-0053859 A
- Another object of the present invention is to provide a dip molded article having excellent durability against sweat and high tensile strength and elongation rate, prepared from the latex composition for dip molding.
- the present invention has a) a carboxylic acid-modified nitrile copolymer latex having a glass transition temperature of -30 to -5 and an average particle diameter of 100 nm to 200 nm, comprising a reactive compound; And b) a carboxylic acid-modified nitrile copolymer latex having a glass transition temperature of -30 to -15 and an average particle diameter of 100 nm to 200 nm.
- the present invention also provides a dip molded article prepared from the latex composition for dip molding.
- the latex composition for dip molding according to the present invention may include both two different carboxylic acid-modified nitrile copolymer latexes in a weight ratio of 3: 7 to 8: 2, thereby providing excellent tensile strength, elongation, stress, and durability. .
- the tensile strength, elongation rate, stress and durability of the dip molded article manufactured from the latex composition for dip molding may be excellent. Accordingly, the carboxylic acid-modified nitrile copolymer latex and dip molded articles using the same may be used in industries that require the same. For example, it can be easily applied to the rubber gloves industry.
- the present invention does not include sulfur and vulcanization accelerators, and does not require a long stirring aging process without causing an allergic reaction, and has excellent tensile strength, elongation rate, stress (stress at 300% elongation and 500%) and durability. It provides a latex composition for dip molding comprising different carboxylic acid-modified nitrile copolymer latex.
- the latex composition for dip molding according to an embodiment of the present invention has a) a glass transition temperature of -30 to -5 and an average particle diameter of 100 nm to 200 nm, and a carboxylic acid-modified nitrile copolymer including a reactive compound.
- Latex (hereinafter referred to as latex A); And b) a carboxylic acid-modified nitrile copolymer latex having a glass transition temperature of -30 to -15 and an average particle diameter of 100 nm to 200 nm (hereinafter, latex B).
- glass transition temperature (Tg) used in the present invention refers to a point in time at which molecules in the latex become active and move due to temperature, that is, a point in time when the latex is changed to an elastic state before it changes from a solid phase to a liquid phase. do.
- the latex A may have a glass transition temperature of ⁇ 30 to ⁇ 5 ° C. and an average particle diameter of 100 nm to 200 nm.
- the latex A has a glass transition temperature of ⁇ 30 to ⁇ 10 ° C. Can be represented. If the glass transition temperature is lower than ⁇ 30 ° C., the tensile strength of the dip molded product manufactured from the dip molding latex composition including the same may decrease significantly due to stickiness or stickiness, and the glass transition temperature may be-. When the temperature is higher than 5 ° C., a problem may occur in a dip molded product manufactured from a latex composition for dip molding including the same.
- a process time may be increased when manufacturing a dip molded product from a latex composition for deep molding including the same, thereby decreasing productivity and decreasing tensile strength of the manufactured dip molded product. Can be.
- the latex B may have a glass transition temperature of ⁇ 30 to ⁇ 15 ° C. and an average particle diameter of 100 nm to 200 nm.
- the latex B has a glass transition temperature of ⁇ 25 to ⁇ 20 ° C. Can be represented. If the glass transition temperature is lower than ⁇ 30 ° C., the tensile strength of the dip molded product prepared from the dip molding latex composition including the same may be significantly reduced or sticky, resulting in lower fit. In this case, the elongation rate of the dip molded article manufactured from the latex composition for dip molding including the same may be lowered, thereby reducing the wearing comfort.
- the average particle diameter of the latex B is greater than 200 nm, it may be difficult to achieve uniform mixing with the latex A, so that the tensile strength of the dip molded product manufactured from the latex composition for dip molding including the same may be reduced.
- dip molding latex composition is characterized in that it comprises the latex A and latex B in a weight ratio of 3: 7 to 8: 2.
- the weight ratio of the latex A is greater than 8 and the weight ratio of the latex B is less than 2, the effect of improving the tensile strength of the dip molded article manufactured from the latex composition for dip molding including the same may be insignificant.
- the weight ratio is less than 3 and the weight ratio of the latex B is greater than 7, elongation and durability of the dip molded article prepared from the latex composition for dip molding including the same may be drastically lowered.
- the carboxylic acid-modified nitrile copolymer latex according to an embodiment of the present invention includes 0.1 parts by weight to 5 parts by weight of a reactive compound based on 100 parts by weight of the monomer mixture, and the monomer mixture is conjugated diene. 40% to 89% by weight of the monomer; 10 wt% to 50 wt% of an ethylenically unsaturated nitrile monomer; And 0.1 wt% to 10 wt% of an ethylenically unsaturated acid monomer.
- the conjugated diene monomer may be included in an amount of 40 wt% to 89 wt%, preferably 45 wt% to 80 wt%, and more preferably 50 wt% to 78 wt%. If the conjugated diene-based monomer is included in less than 40% by weight, the dip molded product prepared from the latex composition for dip molding comprising the same may be hard and the wearing comfort may be lowered, and if included in excess of 89% by weight The oil resistance of the dip molded article manufactured from the latex composition for dip molding may be worsened and the tensile strength may be lowered.
- the conjugated diene monomer is not particularly limited, but for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 1,3-pentadiene and isoprene It may be one or more selected from the group consisting of.
- the conjugated diene monomer may be 1,3-butadiene, isoprene or a combination thereof, and more preferably 1,3-butadiene.
- the ethylenically unsaturated nitrile monomer may be included in an amount of 10 wt% to 50 wt%, preferably 15 wt% to 45 wt%, and more preferably 20 wt% to 40 wt%. . If the ethylenically unsaturated nitrile monomer is included in less than 10% by weight, the oil resistance of the dip molded product prepared from the latex composition for dip molding including the same may be worsened and the tensile strength may be lowered, exceeding 50% by weight. When included, the dip molded article manufactured from the latex composition for dip molding including the same may be hard and the wearing comfort may be reduced.
- the ethylenically unsaturated nitrile monomer is not particularly limited, but may be at least one selected from the group consisting of acrylonitrile, methacrylonitrile, fumaronitrile, ⁇ -chloronitrile and ⁇ -cyano ethyl acrylonitrile, for example. have.
- acrylonitrile, methacrylonitrile or combinations thereof more preferably acrylonitrile.
- the ethylenically unsaturated acid monomer may be included in an amount of 0.1 wt% to 10 wt%, preferably 0.5 wt% to 9 wt%, and more preferably 1 wt% to 8 wt%. If the ethylenically unsaturated acid monomer is included in less than 0.1% by weight, the tensile strength of the dip molded product prepared from the latex composition for dip molding including the same may be lowered. The dip molded article manufactured from the latex composition for dip molding may be hardened and the fit may be reduced.
- the ethylenically unsaturated acid monomer may be an ethylenically unsaturated monomer having a carboxyl group, a sulfonic acid group or an acid anhydride group.
- the ethylenically unsaturated acid monomers are ethylenically unsaturated carboxylic acid monomers such as acrylic acid, methacrylic acid, itaconic acid, maleic acid and fumaric acid; Polycarboxylic acid anhydrides such as maleic anhydride and citraconic anhydride; Ethylenically unsaturated sulfonic acid monomers such as styrene sulfonic acid; It may be one or more selected from the group consisting of ethylenically unsaturated polycarboxylic acid partial ester monomers such as monobutyl fumarate, monobutyl maleate, mono-2-hydroxy propyl maleate and the like. Preferably methacrylic acid.
- the reactive compound may be included as one component of the latex A to improve the tensile strength and durability of the dip molded product prepared from the latex composition for dip molding including the latex A without addition of sulfur and a vulcanization accelerator. As described above, it may be included in an amount of 0.1 parts by weight to 5 parts by weight, and preferably 0.5 parts by weight to 3 parts by weight, based on 100 parts by weight of the monomer mixture. If the reactive compound is included in less than 0.1 part by weight, the tensile strength of the finally manufactured dip molded product may be lowered. If it is included in an amount of more than 5 parts by weight, the touch and fit of the finally manufactured dip molded product may be reduced. Can be.
- the reactive compound may be a compound having at least one reactive group selected from the group consisting of a vinyl group, an epoxy group and a glycidyl group.
- the reactive compound may be a poly (tetramethylene ether) glycol diglycidyl ether compound, a 3-alkoxy-2-hydroxypropyl acrylate compound having 12 to 13 carbon atoms, and a propylene glycol polybutylene glycol monoacrylate compound. It may be at least one selected from the group consisting of.
- the reactive compound may have a weight average molecular weight of 250 or more, preferably 250 to 1000. If the weight average molecular weight of the reactive compound is less than 250, the touch, fit and tensile strength of the finally manufactured dip molded product may be lowered.
- the latex A according to the present invention may further include 20% by weight or less of ethylenically unsaturated monomer, preferably 0.1% to 20% by weight of ethylenically unsaturated monomer may be further included.
- the ethylenically unsaturated monomer is a monomer copolymerizable with the ethylenically unsaturated nitrile monomer and the ethylenically unsaturated acid monomer included in the latex A, but is not particularly limited, such as styrene, alkyl styrene, vinyl naphthalene and fluoroethyl vinyl ether. Fluoroalkylvinyl ethers; (Meth) acrylamide, N-methylol (meth) acrylamide, N, N-dimethylol (meth) acrylamide, N-methoxy methyl (meth) acrylamide, N-propoxy methyl (meth) acrylamide, etc.
- Ethylenically unsaturated amide monomers such as vinyl pyridine, vinyl norbornene, dicyclo pentadiene and 1,4-hexadiene; Methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, trifluoroethyl (meth) acrylate, tetrafluoropropyl (meth) acrylate, dibutyl maleate, difumaric acid Butyl, diethyl maleate, methoxy methyl (meth) acrylate, ethoxy ethyl (meth) acrylate, methoxy ethoxy ethyl (meth) acrylate, cyano methyl (meth) acrylate, 2-cyano ethyl (meth) acrylate, (Meth) acrylic acid 1-cyan
- the latex A is an additive such as a molecular weight regulator, an emulsifier, a polymerization initiator, an activator, and the like in a reactant including a monomer mixture including a conjugated diene monomer, an ethylenically unsaturated nitrile monomer, and an ethylenically unsaturated acid monomer and a reactive compound. It may be prepared by the emulsion polymerization by further comprising.
- the emulsion polymerization is not particularly limited and may be carried out by a method commonly known in the art, and a monomer mixture comprising a conjugated diene monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer included in the latex A.
- Reactants and additives containing a and a reactive compound in a batch at a time, a method of continuously adding the reactant, or a portion of the reactant may be added in a batch and the remaining reactants may be continuously added. .
- the polymerization temperature is not particularly limited, but may be in a temperature range of 10 to 90 ° C, and preferably 25 to 75 ° C.
- the polymerization stop time may be a time when the polymerization conversion is 90% or more, preferably 93% or more.
- the emulsion polymerization may remove the unreacted material after the polymerization stop, and adjust the solid content concentration and pH to obtain a latex A.
- the emulsifier used in the emulsion polymerization is not particularly limited and may be those commonly known in the art, but for example, anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, and the like may be used. Specifically, at least one anionic surfactant selected from the group consisting of alkylbenzene sulfonates, aliphatic sulfonates, sulfuric ester salts of higher alcohols, ⁇ -olefin sulfonates and alkyl ether sulfate ester salts may be preferred.
- the amount of the emulsifier is not particularly limited and may be appropriately adjusted by those skilled in the art.
- the emulsifier may be used in an amount of 0.3 parts by weight to 10 parts by weight based on 100 parts by weight of the total monomer mixture. Preferably 0.8 to 9 parts by weight, more preferably 1.5 to 6 parts by weight can be used.
- the amount of the emulsifier is less than 0.3 parts by weight, the stability may be lowered during emulsion polymerization, and when used in excess of 10 parts by weight, foaming increases during emulsion polymerization, so that latex compositions for dip molding including latex A including the same It may not be easy when manufacturing a dip molded article from the.
- the polymerization initiator is not particularly limited and may be conventionally known in the art, for example, a radical initiator may be used.
- the radical initiator include inorganic peroxides such as sodium persulfate, potassium persulfate, ammonium persulfate, potassium perphosphate and hydrogen peroxide; t-butyl peroxide, cumene hydroperoxide, p-mentanehydro peroxide, di-t-butyl peroxide, t-butylcumyl peroxide, acetyl peroxide, isobutyl peroxide, octanoyl peroxide, dibenzoyl peroxide Organic peroxides such as oxides, 3,5,5-trimethylhexanol peroxide and t-butyl peroxy isobutylate; It may be at least one selected from the group consisting of azobis isobutyronitrile, azobis-2,4-dimethylbareronitrile, azobis
- the amount of the polymerization initiator is not particularly limited and may be appropriately adjusted by those skilled in the art.
- the polymerization initiator may be used in an amount of 0.01 to 2 parts by weight, preferably 0.02 to 1.5 parts by weight, based on 100 parts by weight of the monomer mixture. .
- the polymerization initiator may be used in less than 0.01 parts by weight, it may be difficult to manufacture the latex A by lowering the polymerization rate, and when used in excess of 2 parts by weight, the polymerization rate may be too fast to control the degree of polymerization.
- the activator is not particularly limited and may be one commonly known in the art, but for example, sodium formaldehyde sulfoxylate, sodium ethylenediamine tetraacetate, ferrous sulfate, dextrose, sodium pyrrolate and sodium sulfite One or more selected from the group can be used.
- the molecular weight modifier is not particularly limited and may be one commonly known in the art, for example, mercaptans such as ⁇ -methylstyrene dimer, t-dodecyl mercaptan, n-dodecyl mercaptan, octyl mercaptan; Halogenated hydrocarbons such as carbon tetrachloride, methylene chloride and methylene bromide; Sulfur-containing compounds, such as tetraethyl thiuram disulfide, dipentamethylene thiuram disulfide, and diisopropyl chianthogen disulfide, etc. are mentioned.
- mercaptans such as ⁇ -methylstyrene dimer, t-dodecyl mercaptan, n-dodecyl mercaptan, octyl mercaptan
- Halogenated hydrocarbons such as carbon tetrachlor
- the said molecular weight modifier can be used individually by 1 type or in combination of 2 or more types. It may preferably be mercaptans, in particular t-dodecyl mercaptan.
- the amount of the molecular weight modifier is not particularly limited and may be appropriately adjusted by those skilled in the art, but for example, 0.1 part by weight to 2 parts by weight, preferably 0.2 part by weight to 1.5 parts by weight, based on 100 parts by weight of the monomer mixture. More preferably, it may be 0.3 part by weight to 1 part by weight.
- the physical properties of the latex A may be lowered as a result of lowering the properties of the latex A, and when used in excess of 2 parts by weight, the polymerization stability may be lowered. .
- additives such as chelating agents, dispersing agents, pH adjusting agents, deoxygenating agents, particle size adjusting agents, antioxidants, and oxygen trapping agents may be further included as necessary.
- Carbonic acid-modified nitrile copolymer latex (latex B) is 40% to 89% by weight of the conjugated diene monomer; 10 wt% to 50 wt% of an ethylenically unsaturated nitrile monomer; And 0.1 wt% to 10 wt% of an ethylenically unsaturated acid monomer.
- the conjugated diene monomer may be included in an amount of 40 wt% to 89 wt%, preferably 45 wt% to 80 wt%, and more preferably 50 wt% to 78 wt%. If the conjugated diene-based monomer is included in less than 40% by weight, the dip molded product prepared from the latex composition for dip molding comprising the same may be hard and the wearing comfort may be lowered, and if included in excess of 89% by weight The oil resistance of the dip molded article manufactured from the latex composition for dip molding may be worsened and the tensile strength may be lowered.
- the conjugated diene-based monomer may be the same as or included in the conjugated diene-based monomer described above in the latex A.
- the ethylenically unsaturated nitrile monomer may be included in an amount of 10 wt% to 50 wt%, preferably 15 wt% to 45 wt%, and more preferably 20 wt% to 40 wt%. . If the ethylenically unsaturated nitrile monomer is included in less than 10% by weight, the oil resistance of the dip molded product prepared from the latex composition for dip molding including the same may be worsened and the tensile strength may be lowered, exceeding 50% by weight. When included, the dip molded article manufactured from the latex composition for dip molding including the same may be hard and the wearing comfort may be reduced.
- the ethylenically unsaturated nitrile monomer may be the same as or included in the ethylenically unsaturated nitrile monomer described above in Latex A.
- the ethylenically unsaturated acid monomer may be included in an amount of 0.1 wt% to 10 wt%, preferably 0.5 wt% to 9 wt%, and more preferably 1 wt% to 8 wt%. If the ethylenically unsaturated acid monomer is included in less than 0.1% by weight, the tensile strength of the dip molded product prepared from the latex composition for dip molding including the same may be lowered. The dip molded article manufactured from the latex composition for dip molding may be hardened and the fit may be reduced.
- the ethylenic unsaturated acid monomer may be the same as or described above in the latex A.
- the latex B may further include 20% by weight or less of ethylenically unsaturated monomer, like the latex A, and preferably may further include 0.1% to 20% by weight of ethylenically unsaturated monomer.
- the ethylenically unsaturated monomer may be the same as or included in the ethylenically unsaturated monomer described above in Latex A.
- the latex B can be prepared by emulsion polymerization as in the latex A, wherein the conjugated diene monomer, ethylenically unsaturated nitrile monomer and ethylenically unsaturated acid monomer contained in the latex B, molecular weight regulator, emulsifier, polymerization initiator It may be prepared by emulsion polymerization by further including an additive such as an activator.
- the emulsion polymerization is not particularly limited and can be carried out by a method commonly known in the art, and a monomer mixture comprising a conjugated diene monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer included in the latex B. And a method in which additives are collectively added to the polymerization reactor at once, a method of continuously adding the monomer mixture, or a portion of the monomer mixture may be added in a batch and the remaining monomer mixture may be continuously added.
- the polymerization temperature is not particularly limited, but may be in a temperature range of 10 to 90 ° C, and preferably 25 to 75 ° C.
- the polymerization stop time may be a time when the polymerization conversion is 90% or more, preferably 93% or more.
- the emulsion polymerization may remove the unreacted material after the polymerization is stopped and adjust the solid content concentration and pH to obtain latex B.
- the amount of the emulsifier is not particularly limited and may be appropriately adjusted by those skilled in the art.
- the emulsifier may be used in an amount of 0.3 parts by weight to 10 parts by weight based on 100 parts by weight of the monomer mixture. Preferably 0.8 to 9 parts by weight, more preferably 1.5 to 6 parts by weight can be used.
- the amount of the emulsifier is less than 0.3 parts by weight, the stability may be lowered during emulsion polymerization, and when used in excess of 10 parts by weight, foaming increases during emulsion polymerization, so that latex composition for dip molding including latex B including the same It may not be easy when manufacturing a dip molded article from the.
- the emulsifier may be the same as or included in the emulsifier described above in Latex A.
- the amount of the polymerization initiator is not particularly limited and may be appropriately adjusted by those skilled in the art.
- the polymerization initiator may be used in an amount of 0.01 to 2 parts by weight, preferably 0.02 to 1.5 parts by weight, based on 100 parts by weight of the monomer mixture. .
- the polymerization initiator may be used in less than 0.01 parts by weight, it may be difficult to manufacture the latex B by lowering the polymerization rate, and when used in excess of 2 parts by weight, the polymerization rate may be too fast to control the degree of polymerization.
- the polymerization initiator may be the same as or included in the polymerization initiator described above in latex A.
- the amount of the molecular weight modifier is not particularly limited and may be appropriately adjusted by those skilled in the art, but for example, 0.1 part by weight to 2 parts by weight, preferably 0.2 part by weight to 1.5 parts by weight, based on 100 parts by weight of the monomer mixture. More preferably, it may be 0.3 part by weight to 1 part by weight.
- the molecular weight modifier is used in less than 0.1 parts by weight, the physical properties of the latex B may be lowered as a result of the physical properties of the latex B, as a result, the polymerization stability may be lowered when used in excess of 2 parts by weight .
- the molecular weight regulator may be the same as or included in the above-described molecular weight regulator in the latex A.
- the activator may be the same as or included in the activator described above in the latex A.
- additives such as chelating agents, dispersing agents, pH adjusting agents, deoxygenating agents, particle size adjusting agents, anti-aging agents and oxygen trapping agents may be further included.
- the latex composition for dip molding comprising a carboxylic acid-modified nitrile copolymer latex (latex A) comprising the reactive compound and a carboxylic acid-modified nitrile copolymer latex (latex B) not containing the reactive compound according to the present invention It may be desirable to include the latex A and latex B in an amount of 80 wt% to 99 wt% based on the total weight of the composition. That is, the latex composition for dip molding includes the latex A and latex B, and the total content of latex A and latex B included in the dip molding latex composition is 80% by weight relative to the total weight of the latex composition for dip molding To 99% by weight. Preferably from 85% to 98% by weight, more preferably from 88% to 97% by weight.
- the latex composition for dip molding may further include at least one additive selected from the group consisting of an ionic crosslinking agent, a pigment, a thickener and a pH adjusting agent in addition to the latex A and the latex B described above.
- the solid concentration of the latex composition for dip molding may be 10% to 40% by weight, preferably 15% to 35% by weight, more preferably 15% to 30% by weight.
- the pH of the latex composition for dip molding may be 8 to 12, preferably 9 to 11, more preferably 9.3 to 10.5.
- the present invention provides a dip molded article prepared from the latex composition for dip molding.
- the dip molded article according to an embodiment of the present invention has a nitrogen content of 6.69 wt% to 8.94 wt% based on the total weight of the dip molded article.
- the dip molded article according to an embodiment of the present invention is not particularly limited and may be manufactured by a method commonly known in the art, such as a direct dipping method, an anode adhesion dipping method, and a Teague adhesion dipping method. It can manufacture using a method such as a paper method.
- the positive electrode adhesion dipping method may be used, and when the dip molded product is manufactured using the positive electrode adhesion dipping method, there is an advantage in that a dip molded product having a uniform thickness may be manufactured.
- the dip molded article is a step of dipping a hand-shaped dip molding die in a coagulant solution to attach a coagulant to the surface of the dip molding die (step a); Forming a dip molding layer by dipping the dip molding mold having the coagulant adhered to the surface in the latex composition for dip molding; And it may be prepared through the step of cross-linking the latex resin by heating the dip molding layer.
- the step a is a step for attaching the coagulant to the hand-shaped dip molding surface, but is not particularly limited, soaking the dip molding mold in the coagulant solution for more than 1 minute, can be carried out by drying at 70 to 150 °C have.
- the coagulant solution is a solution in which a coagulant is dissolved in water, alcohol or a mixture thereof.
- the coagulant solution may generally include 5 wt% to 50 wt% coagulant, and may preferably include 10 wt% to 40 wt% coagulant. have.
- the coagulant is not particularly limited but includes, for example, metal halides such as barium chloride, calcium chloride, magnesium chloride, zinc chloride and aluminum chloride; Nitrates such as barium nitrate, calcium nitrate and zinc nitrate; Acetates such as barium acetate, calcium acetate and zinc acetate; Sulfates such as calcium sulfate, magnesium sulfate and aluminum sulfate, and the like.
- metal halides such as barium chloride, calcium chloride, magnesium chloride, zinc chloride and aluminum chloride
- Nitrates such as barium nitrate, calcium nitrate and zinc nitrate
- Acetates such as barium acetate, calcium acetate and zinc acetate
- Sulfates such as calcium sulfate, magnesium sulfate and aluminum sulfate, and the like.
- calcium chloride, calcium nitrate or a combination thereof Preferably calcium chloride, calcium nit
- the step b is a step for forming a dip molding layer from the latex composition for a dip molding according to the present invention in the dip molding mold to which the coagulant is attached, the dip molding mold to which the flocculant is attached, the latex composition for dip molding
- the dip molding layer can be formed by immersing in a 1 minute or more and then taken out.
- Step c is a step for obtaining a dip molded product by crosslinking a latex resin to the dip molded layer, and may be performed by heating the dip molded layer.
- the heat treatment is not particularly limited, but may be performed by, for example, primary heat treatment at 70 to 150 ° C. for 1 minute to 10 minutes, and then secondary heat treatment at 100 to 180 ° C. for 5 minutes to 30 minutes.
- the water component is first evaporated in the dip molding layer, and the dip molding may be obtained by curing of the latex resin of the dip molding layer through crosslinking.
- the dip molded article is not particularly limited and may be applied to various latex industries, but for example, the dip molded article may be applied to at least one molded article selected from the group consisting of inspection gloves, condoms, catheters, industrial gloves, household gloves, and health care products. .
- a carboxylic acid-modified nitrile copolymer latex was prepared in the same manner as in Preparation Example 1 except that 31.5% by weight of acrylonitrile, 62.5% by weight of 1,3-butadiene and 6% by weight of methacrylic acid were used. Latex A-2) was prepared.
- a carboxylic acid-modified nitrile copolymer latex (latex A-3) was prepared in the same manner as in Preparation Example 1.
- a carboxylic acid-modified nitrile copolymer latex (latex A-4) was prepared in the same manner as in Preparation Example 1.
- a carboxylic acid-modified nitrile copolymer latex (latex A-5) was prepared in the same manner as in Preparation Example 1.
- a carboxylic acid-modified nitrile copolymer latex (latex A-6) was prepared in the same manner as in Preparation Example 1.
- the glass transition temperature was measured according to a conventional method using a differential scanning calorimetry (Differential Scanning Calotimetry), the average particle diameter was measured according to a conventional method using a laser scattering analyzer (Nicomp).
- the gel content of each latex was dried for at least 48 hours at 25 °C, 60% humidity conditions to prepare a polymer film and finely cut the weight (W 0 ) and then put into a # 200 mesh barrel, 200 ml of Submerged in methyl ethyl kecon (MEK) solution for 48 hours, taken out and dried in an oven of 130 to measure the weight (W 1 ).
- the ratio of the weight of the polymer film (W 0 ) and the weight of the polymer film (W 1 ) after drying in the oven was obtained as a percentage.
- the surface tension was obtained by measuring the force required to detach the platinum summon from the sample liquid when the platinum summon was hung horizontally using a surface tension meter to contact each sample liquid (latex) and pulled. ),
- Each polymer film obtained by drying each latex at 130 ° C. was chopped and immersed in a tetrahydrofuran (THF) solution to filter out the dissolved liquid, and compared with a standard sample using GPC (gel permeation chromatography), relative molecular weight. was obtained by measuring.
- THF tetrahydrofuran
- Carbonic acid modified nitrile copolymer latex containing the reactive compound prepared in Preparation Example 1 (latex A-1) and carboxylic acid modified nitrile copolymer latex containing no reactive compound prepared in Preparation Example 7 Latex B) was prepared by mixing at a weight ratio of 5: 5, and 2.0 parts by weight of 1.25% potassium hydroxide solution, an appropriate amount of distilled water, 1 part by weight of titanium oxide and 1.5 parts by weight of zinc oxide were added and mixed to obtain a solid content of 15% and pH 9.8
- a latex composition for dip molding was prepared. In this case, the parts by weight are shown based on 100 parts by weight of the latex composition for dip molding.
- a coagulant solution was prepared by mixing 12 parts by weight of calcium nitrate, 87.9 parts by weight of midstream and 0.1 part by weight of humectant (Teric 320, Huntsman Corporation, Australia). At this time, parts by weight are based on 100 parts by weight of the coagulant solution.
- the hand-shaped ceramic mold was immersed in the coagulant solution for 10 seconds, taken out, and dried at 80 ° C. for 4 minutes to apply a coagulant to the hand-shaped ceramic mold.
- the mold to which the coagulant was applied was immersed in the latex composition for dip molding for 10 seconds, taken out, dried at 80 ° C. for 2 minutes, and then soaked in water for 1 minute.
- the mold was dried at 80 ° C. for 3 minutes and crosslinked at 120 ° C. for 20 minutes.
- the crosslinked dip molding layer was peeled off from the hand-shaped mold to obtain a dip molded article in the form of a glove.
- the carboxylic acid-modified nitrile copolymer latex (latex A-2) prepared in Preparation Example 2 was used instead of the carboxylic acid-modified nitrile copolymer latex prepared in Preparation Example 1 (latex A-2).
- a latex composition for dip molding and a dip molded article were manufactured in the same manner as in Example 1.
- a carboxylic acid-modified nitrile-based copolymer latex (latex A-1) prepared in Preparation Example 1 and a carboxylic acid-modified nitrile-based copolymer latex (latex A-3) prepared in Preparation Example 3 and Example A latex composition for dip molding and a dip molded product were prepared in the same manner as in Example 1, except that the carboxylic acid-modified nitrile copolymer latex prepared in 7 was mixed in a weight ratio of 6: 4. .
- a carboxylic acid-modified nitrile-based copolymer latex prepared in Preparation Example 1 (latex A-1) without using the carboxylic acid-modified nitrile-based copolymer latex prepared in Preparation Example 4 (latex A-4) and Preparation Example A latex composition for dip molding and a dip molded product were prepared in the same manner as in Example 1, except that the carboxylic acid-modified nitrile copolymer latex prepared in 7 (latex B) was mixed in a weight ratio of 6: 4. .
- a carboxylic acid-modified nitrile-based copolymer latex (latex A-1) prepared in Preparation Example 1 and a carboxylic acid-modified nitrile-based copolymer latex (latex A-5) prepared in Preparation Example 5, and Preparation Example A latex composition for dip molding and a dip molded product were prepared in the same manner as in Example 1, except that the carboxylic acid-modified nitrile copolymer latex prepared in 7 (latex B) was mixed in a weight ratio of 6: 4. .
- a carboxylic acid-modified nitrile-based copolymer latex (latex A-1) prepared in Preparation Example 1 and a carboxylic acid-modified nitrile-based copolymer latex (latex A-5) prepared in Preparation Example 5, and Preparation Example A latex composition for dip molding and a dip molded product were prepared in the same manner as in Example 1, except that the carboxylic acid-modified nitrile copolymer latex prepared in 7 was mixed in a weight ratio of 4: 6. .
- a carboxylic acid-modified nitrile-based copolymer latex (latex A-1) prepared in Preparation Example 1 and a carboxylic acid-modified nitrile-based copolymer latex (latex A-5) prepared in Preparation Example 5, and Preparation Example A latex composition for dip molding and a dip molded product were manufactured in the same manner as in Example 1, except that the carboxylic acid-modified nitrile copolymer latex prepared in 7 (latex B) was mixed at a weight ratio of 3: 7.
- a carboxylic acid-modified nitrile-based copolymer latex (latex A-1) prepared in Preparation Example 1 and a carboxylic acid-modified nitrile-based copolymer latex (latex A-6) prepared in Preparation Example 6 and Preparation Example A latex composition for dip molding and a dip molded product were prepared in the same manner as in Example 1, except that the carboxylic acid-modified nitrile copolymer latex prepared in 7 (latex B) was mixed at a weight ratio of 8: 2.
- the carboxylic acid-modified nitrile copolymer latex prepared in Preparation Example 5 (latex A-5) and the carboxylic acid-modified nitrile copolymer latex prepared in Preparation Example 7 (latex B) were mixed at a weight ratio of 2: 8.
- a latex composition for dip molding and a dip molded article were manufactured in the same manner as in Example 8 except for the use.
- the carboxylic acid-modified nitrile copolymer latex prepared in Preparation Example 6 (latex A-6) and the carboxylic acid-modified nitrile copolymer latex prepared in Preparation Example 7 (latex B) were mixed at a weight ratio of 9: 1.
- a latex composition for dip molding and a dip molded article were manufactured in the same manner as in Example 9 except for using the same.
- Each dip molded product is manufactured in a dumbbell-shaped specimen according to ASTM D-412, and the cross head speed is 500 using a UTM (Universal Testing Machine) device (Model: 4466, Instron) according to ASTM D638. After pulling at mm / min, the points at which each specimen was cut were measured.
- Max load (N) represents the external force applied to the specimen at the time when the specimen is cut, tensile strength was calculated by the following equation (1).
- the elongation (%) was calculated by the following equation (2), the stress at 300% (MPa) is the tensile strength when the specimen is stretched three times the initial length, the stress (MPa) at 500% is Tensile strength at the time of elongation 5 times the initial length was measured.
- the specimens After cutting each dip molded product into S-shaped specimens, the specimens are immersed in an artificially created sweat solution, and the specimens are cut by repeating the reduction and increasing the ratio to 200% of the initial length at a rate of once every 2 seconds. The number of times up to the time point was measured.
- Example 1 14.1 30.0 516.4 6.6 26.03 325
- Example 2 13.2 28.4 498.5 6.8 28.21 447
- Example 3 13.1 30.8 465.9 7.2 - 520
- Example 4 6.9 15.5 539.0 4.5 11.37 894
- Example 5 7.2 16.1 533.9 4.8 12.90 916
- Example 6 8.9 19.1 522.6 5.6 16.52 277
- Example 7 9.1 20.5 527.0 7.0 23.87 208
- Example 8 12.6 28.7 524.9 6.9 27.1 214
- Example 9 10.9 24.4 409.9 9.8 - 1444
- Comparative Example 2 9.2 20.9 405.5 9.3 - 171
- Comparative Example 3 9.7 22.3 404.0 9.5 - 111
- Comparative Example 4 8.2 17.1 548.4 4.8 12.19 199
- the dip molded articles of Examples 1 to 9 prepared from the latex composition for dip molding comprising two different carboxylic acid-modified nitrile copolymer latex according to the present invention is Comparative Examples 1 to Compared to the dip molded product of Comparative Example 4, it was excellent in Max load, tensile strength, elongation rate, stress (at 300% and 500%) and durability.
- the dip molded articles of Examples 1 to 9 prepared from a latex composition for dip molding comprising two different carboxylic acid modified nitrile copolymer latexes according to the present invention are a kind of carboxylic acid modified nitrile copolymer latex.
- Example 8 and Example 9 showed all excellent properties in the Max load, tensile strength, elongation rate, stress and durability, Comparative Examples 3 and 4 did not balance the characteristics.
- the latex composition for dip molding according to the present invention can form a dip molded article having properties excellent in both tensile strength, elongation, stress and durability by including two different carboxylic acid-modified nitrile copolymer latexes.
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Abstract
Description
구분 | 평균입경(nm) | 겔 함량(% at 130) | 유리전이온도(Tg, ℃) | 표면장력(mN/m) | 분자량(kDa) |
제조 실시예 1 | 117.4 | 68.7 | -16.4 | 41.55 | 9.0 |
제조 실시예 2 | 106.6 | 72.06 | -17.31 | 40.09 | 7.3 |
제조 실시예 3 | 128.5 | 66.15 | -18.29 | 40.78 | 6.5 |
제조 실시예 4 | 121.3 | 58.63 | -25.45 | 39.65 | 9.7 |
제조 실시예 5 | 118.2 | 66.89 | -19.1 | 41.82 | 8.3 |
제조 실시예 6 | 122.0 | 87.18 | -9.5 | 37.12 | 6.0 |
제조 실시예 7 | 123.8 | 40.1 | -25.8 | 33.1 | 19.8 |
구분 | Mas load(N) | 인장강도(MPa) | 신장율(%) | 응력(MPa, at 300%) | 응력(MPa, at 500%) | 내구성(회) |
실시예 1 | 14.1 | 30.0 | 516.4 | 6.6 | 26.03 | 325 |
실시예 2 | 13.2 | 28.4 | 498.5 | 6.8 | 28.21 | 447 |
실시예 3 | 13.1 | 30.8 | 465.9 | 7.2 | - | 520 |
실시예 4 | 6.9 | 15.5 | 539.0 | 4.5 | 11.37 | 894 |
실시예 5 | 7.2 | 16.1 | 533.9 | 4.8 | 12.90 | 916 |
실시예 6 | 8.9 | 19.1 | 522.6 | 5.6 | 16.52 | 277 |
실시예 7 | 9.1 | 20.5 | 527.0 | 7.0 | 23.87 | 208 |
실시예 8 | 12.6 | 28.7 | 524.9 | 6.9 | 27.1 | 214 |
실시예 9 | 10.9 | 24.4 | 409.9 | 9.8 | - | 1444 |
비교예 1 | 4.3 | 102 | 424.9 | 5.2 | - | 143 |
비교예 2 | 9.2 | 20.9 | 405.5 | 9.3 | - | 171 |
비교예 3 | 9.7 | 22.3 | 404.0 | 9.5 | - | 111 |
비교예 4 | 8.2 | 17.1 | 548.4 | 4.8 | 12.19 | 199 |
Claims (18)
- a) -30 내지 -5℃의 유리전이온도 및 100 nm 내지 200 nm의 평균입경을 갖으며, 반응성 화합물을 포함하는 카르본산 변성 니트릴계 공중합체 라텍스; 및b) -30 내지 -15℃의 유리전이온도 및 100 nm 내지 200 nm의 평균입경을 갖는 카르본산 변성 니트릴계 공중합체 라텍스를 포함하는 딥 성형용 라텍스 조성물.
- 청구항 1에 있어서,상기 조성물은 a) 카르본산 변성 니트릴계 공중합체 라텍스와 b) 카르본산 변성 니트릴계 공중합체 라텍스를 3:7 내지 8:2의 중량비로 포함하는 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 1에 있어서,상기 a) 카르본산 변성 니트릴계 공중합체 라텍스는 단량체 혼합물 100 중량부에 대하여 0.1 중량부 내지 5 중량부의 반응성 화합물을 포함하고,상기 단량체 혼합물은공액디엔계 단량체 40 중량% 내지 89 중량%;에틸렌성 불포화 니트릴계 단량체 10 중량% 내지 50 중량%; 및에틸렌성 불포화산 단량체 0.1 중량% 내지 10 중량%를 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3에 있어서,상기 반응성 화합물은 비닐기, 에폭시기 및 글리시딜기로 이루어진 군으로부터 선택된 1종 이상의 반응성기를 갖는 화합물인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3에 있어서,상기 반응성 화합물은 폴리(테트라메틸렌에테르) 글리콜 디글리시딜 에테르 화합물, 12개의 탄소원자 및 13개의 탄소원자로 구성된 알콕시기를 가지는 3-알콕시-2-하이드록시프로필 아크릴레이트 화합물 및 프로필렌 글리콜 폴리부티렌 글리콜 모노아크릴레이트 화합물로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3에 있어서,상기 반응성 화합물은 중량평균분자량이 250 내지 1000인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 1에 있어서,상기 b) 카르본산 변성 니트릴계 공중합체 라텍스는,공액디엔계 단량체 40 중량% 내지 89 중량%;에틸렌성 불포화 니트릴계 단량체 10 중량% 내지 50 중량%; 및에틸렌성 불포화산 단량체 0.1 중량% 내지 10 중량%를 포함하는 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3 또는 청구항 7에 있어서,상기 공액디엔계 단량체는 1,3-부타디엔, 2,3-디메틸-1,3-부타디엔, 2-에틸-1,3-부타디엔, 1,3-펜타디엔 및 이소프렌으로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3 또는 청구항 7에 있어서,상기 에틸렌성 불포화 니트릴계 단량체는 아크릴로니트릴, 메타크릴로니트릴, 후마로니트릴, α-클로로니트릴 및 α-시아노 에틸 아크릴로니트릴로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3 또는 청구항 7에 있어서,상기 에틸렌성 불포화산 단량체는 카르복실기, 술폰산기 또는 산무수물기를 갖는 에틸렌성 불포화 단량체인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3 또는 청구항 7에 있어서,상기 에틸렌성 불포화산 단량체는 아크릴산, 메타크릴산, 이타콘산, 말레인산, 푸마르산, 무수말레산, 무수시트라콘산, 스티렌 술폰산, 푸마르산 모노부틸, 말레인산 모노부틸 및 말레인산 모노-2-히드록시 프로필로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 3 또는 청구항 7에 있어서,상기 a) 카르본산 변성 니트릴계 공중합체 라텍스 및 b) 카르본산 변성 니트릴계 공중합체 라텍스는 각각 0.1 중량% 내지 20 중량%의 에틸렌성 불포화 단량체를 더 포함하는 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 12에 있어서,상기 에틸렌성 불포화 단량체는 스티렌, 알킬 스티렌, 비닐 나프탈렌, 플로로 에틸 비닐 에테르, (메타)아크릴아미드, N-메틸올(메타)아크릴아미드, N,N-디메틸올(메타)아크릴아미드, N-메톡시 메틸(메타)아크릴아미드, N-프로폭시 메틸(메타)아크릴아미드, 비닐 피리딘, 비닐 노보넨, 디시클로 펜타디엔, 1,4-헥사디엔, (메타)아크릴산 메틸, (메타)아크릴산 에틸, (메타)아크릴산 부틸, (메타)아크릴산-2-에틸 헥실, (메타)아크릴산 트리 플루오르 에틸, (메타)아크릴산 테트라 플루오르 프로필, 말레인산 디부틸, 푸마르산 디부틸, 말레인산 디에틸, (메타)아크릴산 메톡시 메틸, (메타)아크릴산 에톡시 에틸, (메타)아크릴산 메톡시 에톡시 에틸, (메타)아크릴산 시아노 메틸, (메타)아크릴산 2-시아노 에틸, (메타)아크릴산 1-시아노 프로필, (메타)아크릴산 2-에틸-6-시아노 헥실, (메타)아크릴산 3-시아노 프로필, (메타)아크릴산 히드록시 에틸, (메타)아크릴산 히드록시 에틸, (메타)아크릴산 히드록시 프로필, 글리시딜 (메타)아크릴레이트 및 다이메틸아미노 에틸 (메타)아크릴레이트로 이루어진 군으로부터 선택된 1종 이상인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 1에 있어서,상기 딥 성형용 라텍스 조성물은 상기 조성물 전체 중량에 대하여 a) 카르본산 변성 니트릴계 공중합체 라텍스 및 b) 카르본산 변성 니트릴계 공중합체 라텍스를 80 중량% 내지 99 중량%로 포함하는 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 1에 있어서,상기 딥 성형용 라텍스 조성물의 고형분 농도가 10 중량% 내지 40 중량%이고, pH는 8 내지 12인 것을 특징으로 하는 딥 성형용 라텍스 조성물.
- 청구항 1에 기재된 딥 성형용 라텍스 조성물로부터 제조된 딥 성형품.
- 청구항 16에 있어서,상기 딥 성형품은 딥 성형품 전체 중량을 기준으로 질소 함유량이 6.69 중량% 내지 8.94 중량%인 것을 특징으로 하는 딥 성형품.
- 청구항 16에 있어서,상기 딥 성형품은 검사장갑, 콘돔, 카테터, 산업용 장갑, 가정용 장갑 및 건강 관리용품으로 이루어진 군으로부터 선택된 1종 이상의 성형품인 것을 특징으로 하는 딥 성형품.
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US15/507,940 US10023728B2 (en) | 2014-10-20 | 2015-10-20 | Latex composition for dip-forming including carboxylic acid modified-nitrile based copolymer latex and dip-formed article prepared therefrom |
JP2017513188A JP6360970B2 (ja) | 2014-10-20 | 2015-10-20 | カルボン酸変性ニトリル系共重合体ラテックスを含むディップ成形用ラテックス組成物及びこれから製造されたディップ成形品 |
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US20170283599A1 (en) | 2017-10-05 |
CN106661307A (zh) | 2017-05-10 |
KR20160046166A (ko) | 2016-04-28 |
US10023728B2 (en) | 2018-07-17 |
CN106661307B (zh) | 2019-03-12 |
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