CN116444724A - Production process of special latex for carboxylated butyronitrile foaming leather glove - Google Patents
Production process of special latex for carboxylated butyronitrile foaming leather glove Download PDFInfo
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- CN116444724A CN116444724A CN202310268597.7A CN202310268597A CN116444724A CN 116444724 A CN116444724 A CN 116444724A CN 202310268597 A CN202310268597 A CN 202310268597A CN 116444724 A CN116444724 A CN 116444724A
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- 229920000126 latex Polymers 0.000 title claims abstract description 31
- 239000004816 latex Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000010985 leather Substances 0.000 title claims abstract description 14
- 238000005187 foaming Methods 0.000 title claims abstract description 10
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 title claims description 6
- 239000000178 monomer Substances 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 15
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003999 initiator Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 12
- 239000000047 product Substances 0.000 claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 11
- 238000007720 emulsion polymerization reaction Methods 0.000 claims abstract description 10
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012467 final product Substances 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 19
- 150000002825 nitriles Chemical class 0.000 claims description 11
- -1 polyoxyethylene Polymers 0.000 claims description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 claims description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 150000005215 alkyl ethers Chemical class 0.000 claims description 3
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 claims description 2
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000012966 redox initiator Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- XNINAOUGJUYOQX-UHFFFAOYSA-N 2-cyanobutanoic acid Chemical compound CCC(C#N)C(O)=O XNINAOUGJUYOQX-UHFFFAOYSA-N 0.000 abstract description 3
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 14
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000000109 continuous material Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000011115 styrene butadiene Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- FRQQKWGDKVGLFI-UHFFFAOYSA-N 2-methylundecane-2-thiol Chemical compound CCCCCCCCCC(C)(C)S FRQQKWGDKVGLFI-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001767 cationic compounds Chemical class 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012632 extractable Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001412 inorganic anion Inorganic materials 0.000 description 1
- 229910001411 inorganic cation Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 239000007785 strong electrolyte Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a production process of special latex for carboxyl butyronitrile foaming leather grain gloves, which comprises the following steps: s1, evenly mixing desalted water, an emulsifying agent and a small amount of electrolyte to obtain a solution 1; s2, conveying the solution 1 prepared in the step S1 into vacuum stirring equipment, vacuumizing, sucking unsaturated carboxylic acid and a molecular weight regulator, adding butadiene and acrylonitrile monomers, stirring uniformly, and adding an initiator to obtain a solution 2; s3, controlling the temperature in the vacuum stirring pump within a proper range, and performing emulsion polymerization reaction on the solution 2; s4, carrying out monomer removal and additive addition on the product obtained by the polymerization reaction, uniformly mixing, cooling, filtering and subpackaging to obtain the final product. The invention has the characteristics of simple operation in the production process, mild reaction, easy control, no pollution in the production process, low production cost and the like, and is worthy of popularization.
Description
Technical Field
The invention relates to the technical field of latex special for gloves, in particular to a production process of latex special for carboxyl butyronitrile foaming leather grain gloves.
Background
The carboxylated nitrile latex is an aqueous dispersion of a terpolymer of acrylonitrile, butadiene and a carboxyl-containing third monomer, such as methacrylic acid, acrylic acid and the like, which is prepared by emulsion copolymerization of the monomer chain carboxyl side groups. The carboxyl nitrile latex has carboxyl on molecular chain, and has better performance than common nitrile latex, good cohesiveness and film forming property, better mechanical stability and freeze thawing stability, and excellent light resistance, heat resistance and ageing resistance. The carboxyl functional groups can be crosslinked with each other and self-vulcanized, and the like, and the carboxyl nitrile latex has the advantages of excellent oil resistance, chemical resistance, wear resistance, good fluidity, high tensile strength, unique adhesive force, excellent chemical resistance, puncture resistance, abrasion resistance, low extractables, excellent oil resistance, good elasticity and small compression set.
Chinese patent No. CN105237682 discloses a process for producing carboxylated nitrile latex, which uses styrene-butadiene latex as seed, butadiene is added into reactor, and another part of monomer is added dropwise into carboxylated nitrile latex obtained by polymerization. The problem with the above process is that it takes a long time to obtain a higher conversion. The monomer dripping time is short, but the reaction process temperature and pressure are difficult to control, so that the product is easy to generate defects of poor stability, more aggregates and the like.
In order to solve the defects of the preparation process of the carboxylated nitrile latex, the preparation method of the carboxylated nitrile latex with the publication number of CN113683728A adopts a new production process in the seed preparation stage, and has short time and high efficiency; the production process of the carboxylated nitrile latex adopts a gradient slow heating mode, and the monomer is added dropwise, so that the temperature and the pressure in the reaction process are stable, and the reaction rate is balanced. The obtained product has high stability and greatly reduced content of condensate. The production process can meet the requirements of normal production, but is still unfavorable for quick operation, inconvenient to control, needs continuous material supplementing and has poor environmental protection performance, and therefore, the production process of the special latex for the carboxylated butyronitrile foaming leather glove is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a production process of special latex for carboxyl butyronitrile foaming leather gloves.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a production process of special latex for carboxylated butyronitrile foaming leather grain gloves comprises the following steps:
s1, evenly mixing desalted water, an emulsifying agent and a small amount of electrolyte to obtain a solution 1;
s2, conveying the solution 1 prepared in the step S1 into vacuum stirring equipment, vacuumizing, sucking unsaturated carboxylic acid and a molecular weight regulator, adding butadiene and acrylonitrile monomers, stirring uniformly, and adding an initiator to obtain a solution 2;
s3, controlling the temperature in the vacuum stirring pump within a proper range, and performing emulsion polymerization reaction on the solution 2;
s4, carrying out monomer removal and additive addition on the product obtained by the polymerization reaction, uniformly mixing, cooling, filtering and subpackaging to obtain the final product.
Preferably, the emulsifier is: one or a combination of several of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, ethylene oxide lauryl alcohol and polyoxyethylene alkyl ether.
Preferably, the electrolyte is one or a mixture of several of potassium chloride, potassium carbonate or sodium carbonate.
Preferably, the molecular weight regulator is at least one selected from n-dodecyl mercaptan, t-dodecyl mercaptan and n-butyl mercaptan.
Preferably, the initiator is any of a variety of existing water-soluble initiators capable of initiating emulsion polymerization, preferably a redox initiator.
The beneficial effects of the invention are as follows:
1. the emulsion polymerization reaction is carried out in a vacuum environment in a vacuumizing mode, so that the reverse effect is improved, and meanwhile, the quality of the reaction is ensured by controlling the temperature range;
2. the production process is simple in flow and convenient to operate, and the defect that continuous material supplementing is needed in the conventional production process is avoided, so that the temperature control in the reaction process is simple, the reaction period is short, and the production efficiency is high;
in conclusion, the method has the characteristics of simple operation in the production process, mild reaction, easiness in control, no pollution in the production process, low production cost and the like, and is worthy of popularization.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
A production process of special latex for carboxylated butyronitrile foaming leather grain gloves comprises the following steps:
s1, uniformly mixing desalted water, an emulsifying agent and a small amount of electrolyte to obtain a solution 1, wherein the emulsifying agent is as follows: sodium dodecyl sulfate is an organic compound, is white or light yellow powder, is easily dissolved in water, and is insensitive to alkali and hard water. Has the advantages of decontamination, emulsification and excellent foaming power, and is an anionic surfactant slightly toxic to human bodies; sodium dodecyl benzene sulfonate is a common anionic surfactant, is white or light yellow powdery or flaky solid, is difficult to volatilize, is easy to dissolve in water, and is dissolved in water to form a semitransparent solution; ethylene oxide lauryl alcohol and polyoxyethylene alkyl ether are important polyoxyethylene nonionic surfactants, have the characteristics of stable property, acid and alkali resistance, low cost and the like, are mainly used for producing high-performance detergents, and are one of the most commonly used main raw materials in printing and dyeing auxiliary agents; the reaction progress is promoted by using one or a combination of more than one of the components; the electrolyte is potassium chloride which is a common material for regulating electrolyte balance; potassium carbonate can be used as electrolyte, and can be dissolved in aqueous solution or can conduct electricity in a molten state; sodium carbonate is electrolyte and strong electrolyte, and desalted water is finished water obtained by removing suspended matters, colloid, inorganic cations, anions and other impurities in water by various water treatment processes;
s2, conveying the solution 1 prepared in the step S1 into vacuum stirring equipment, vacuumizing, wherein the vacuum is helpful to improve the efficiency and quality of the reaction, sucking unsaturated carboxylic acid and a molecular weight regulator, adding butadiene and acrylonitrile monomers, stirring uniformly, and adding an initiator to obtain a solution 2; the molecular weight regulator is colorless, water white or light yellow liquid with slight smell. The main uses are synthetic rubber, synthetic fiber and polymerization regulator of synthetic resin; the method is also used for producing polyvinyl chloride stabilizers, medicines, pesticides, bactericides, detergents, surface hydrophobic modifiers and the like; the tertiary dodecyl mercaptan is mainly used for ABS resin, styrene Butadiene Rubber (SBR), nitrile Butadiene Rubber (NBR) and high impact polystyrene (M-HIPS) products, and is used as a molecular weight regulator in the polymerization reaction process. The product can also be used as a stabilizer and an antioxidant of polyolefin such as polyvinyl chloride, polyethylene and the like, and can also be used for synthesizing raw materials of certain medicines, pesticides, bactericides and spices; n-butanethiol is mainly used as a solvent and an organic synthesis intermediate; the initiator is various existing water-soluble initiators capable of initiating emulsion polymerization, preferably oxidation-reduction initiators;
s3, controlling the temperature in the vacuum stirring pump within a proper range, so that the emulsion polymerization reaction of the solution 2 can be fully stirred, and the materials can be fully reacted;
s4, carrying out monomer removal and additive addition on the product obtained by the polymerization reaction, uniformly mixing, cooling, filtering and subpackaging to obtain the final product.
The residual monomer removal and performance optimization are carried out in the later stage, and the residual monomer removal adopts any one of a steam stripping method and a post polymerization method, so that the latex has been widely applied to coatings, adhesives, papermaking aids, leather, textile aids and the like. The polymer latex is mainly obtained by emulsion polymerization. Since the monomer conversion rate during polymerization cannot reach 100%, some unreacted monomers remain in the latex, generally 0.5% -1.0%, so that the product has peculiar smell. When the product is used, residual monomers volatilize, so that environmental pollution is caused, and the health of a user can be endangered. With increasing importance on environmental protection and human health, polymer latices with higher residual monomer content will lack competitiveness.
The stripping method is the earliest research and application method abroad, and domestic styrene-butadiene latex production factories also adopt the method; the method is that steam is introduced under the condition of vacuumizing to bring out residual monomers, and the efficiency of removing the monomers is greatly dependent on the contact area of the steam and the latex; the method can also adopt a post-polymerization method to remove, which is to add a high-efficiency initiator after the monomer is basically polymerized, and continue to polymerize under certain conditions, so that the residual monomer is basically converted completely, the energy consumption is low, no waste water is generated, no equipment is added, and no latex is required to be concentrated. However, the initiator used in the postpolymerization must have a relatively high activity and selectivity. If the activity is low, the post polymerization time is long, and the production capacity of equipment can be reduced; if the selectivity is poor, chain transfer can occur to cause crosslinking reaction in the emulsion particles, and the quality of the product is affected.
In the invention, desalted water, an emulsifying agent and a small amount of electrolyte are required to be uniformly mixed to obtain a solution 1, the solution 1 is conveyed into vacuum stirring equipment and vacuumized, unsaturated carboxylic acid and a molecular weight regulator are sucked, butadiene and acrylonitrile monomers are added, the solution 2 is obtained by adding an initiator after uniform stirring, the temperature in the vacuum stirring pump is controlled within a proper range, the emulsion polymerization reaction of the solution 2 is carried out, a product obtained by the polymerization reaction is subjected to monomer removal and auxiliary agent addition by adopting a proper removal method according to actual conditions, and then the mixture is uniformly mixed and cooled, filtered and packaged to obtain a final product.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The production process of the special latex for the carboxylated butyronitrile foaming leather glove is characterized by comprising the following steps of:
s1, evenly mixing desalted water, an emulsifying agent and a small amount of electrolyte to obtain a solution 1;
s2, conveying the solution 1 prepared in the step S1 into vacuum stirring equipment, vacuumizing, sucking unsaturated carboxylic acid and a molecular weight regulator, adding butadiene and acrylonitrile monomers, stirring uniformly, and adding an initiator to obtain a solution 2;
s3, controlling the temperature in the vacuum stirring pump within a proper range, and performing emulsion polymerization reaction on the solution 2;
s4, carrying out monomer removal and additive addition on the product obtained by the polymerization reaction, uniformly mixing, cooling, filtering and subpackaging to obtain the final product.
2. The process for producing the carboxylated nitrile foam leather grain glove special latex according to claim 1, which is characterized in that: the emulsifying agent is as follows: one or a combination of several of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, ethylene oxide lauryl alcohol and polyoxyethylene alkyl ether.
3. The process for producing the carboxylated nitrile foam leather grain glove special latex according to claim 1, which is characterized in that: the electrolyte is one or a mixture of more of potassium chloride, potassium carbonate or sodium carbonate.
4. The process for producing the carboxylated nitrile foam leather grain glove special latex according to claim 1, which is characterized in that: the molecular weight regulator is at least one selected from n-dodecyl mercaptan, tert-dodecyl mercaptan and n-butyl mercaptan.
5. The process for producing the carboxylated nitrile foam leather grain glove special latex according to claim 1, which is characterized in that: the initiator is a water-soluble initiator capable of initiating emulsion polymerization, preferably a redox initiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310268597.7A CN116444724A (en) | 2023-03-16 | 2023-03-16 | Production process of special latex for carboxylated butyronitrile foaming leather glove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310268597.7A CN116444724A (en) | 2023-03-16 | 2023-03-16 | Production process of special latex for carboxylated butyronitrile foaming leather glove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116444724A true CN116444724A (en) | 2023-07-18 |
Family
ID=87132872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310268597.7A Pending CN116444724A (en) | 2023-03-16 | 2023-03-16 | Production process of special latex for carboxylated butyronitrile foaming leather glove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116444724A (en) |
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2023
- 2023-03-16 CN CN202310268597.7A patent/CN116444724A/en active Pending
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