WO2016042846A1 - ポリビニルアミン架橋重合体粒子の製造方法 - Google Patents
ポリビニルアミン架橋重合体粒子の製造方法 Download PDFInfo
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- WO2016042846A1 WO2016042846A1 PCT/JP2015/064978 JP2015064978W WO2016042846A1 WO 2016042846 A1 WO2016042846 A1 WO 2016042846A1 JP 2015064978 W JP2015064978 W JP 2015064978W WO 2016042846 A1 WO2016042846 A1 WO 2016042846A1
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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
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
- B01J20/267—Cross-linked polymers
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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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/18—Suspension polymerisation
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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
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/34—Monomers containing two or more unsaturated aliphatic radicals
- C08F212/36—Divinylbenzene
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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
- C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F226/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a single or double bond to nitrogen
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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
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
Definitions
- the present invention relates to a method for producing polyvinylamine crosslinked polymer particles.
- Polyvinylamine crosslinked polymer particles have been proposed for a wide range of uses such as gas adsorbents and anion exchange resins.
- a method for producing polyvinylamine crosslinked polymer particles for example, divinylbenzene, (meth) acrylic acid ester or (meth) acrylamide-based crosslinking monomer and N-vinylformamide (hereinafter abbreviated as NVF) are copolymerized
- NVF N-vinylformamide
- An object of the present invention is to efficiently produce polyvinylamine crosslinked polymer particles by a simple operation without using an organic solvent.
- polyvinyl carboxylic acid amide crosslinked polymer particles are obtained by suspension polymerization of N-vinyl carboxylic acid amide in brine in the presence of a polyvinyl compound and a dispersant. It has been found that polyvinylamine crosslinked polymer particles can be easily obtained by hydrolyzing after removing water and the like by washing.
- the present invention is a method in which N-vinylcarboxylic acid amide and a polyvinyl compound are subjected to suspension polymerization in salt water in the presence of a dispersant to obtain polyvinylcarboxylic acid amide crosslinked polymer particles, and then the crosslinked polymer is hydrolyzed. Relates to a method for producing polyvinylamine cross-linked polymer particles.
- polyvinylamine crosslinked polymer particles can be produced simply and efficiently without using an organic solvent.
- suspension polymerization in brine in the present invention comprises N-vinylcarboxylic acid amide, a polyvinyl compound, and, if necessary, a monomer copolymerizable with N-vinylcarboxylic acid amide, a polymerization initiator, and a dispersing agent. It can be carried out by suspending in brine and stirring at an arbitrary strength to generate monomer droplets and radical polymerization.
- the particle size of the monomer droplets is controlled by the dispersant and the stirring strength, but is 0.01 mm to 10 mm, preferably 0.1 mm to 5 mm.
- N-vinylcarboxylic acid amide monomers used in the present invention include N-vinylformamide, N-methyl-N-vinylformamide, N-vinylacetamide, N-methyl-N-vinylacetamide, and N-vinylpropion.
- Examples include amide, N-methyl-N-vinylpropionamide, N-vinylbutyramide, N-vinylisobutyramide, and the like, preferably N-vinylformamide and N-vinylacetamide.
- a monomer copolymerizable with N-vinylcarboxylic acid amide may be used.
- polyvinyl compounds include aromatic polyvinyl compounds such as divinylbenzene, trivinylbenzene, and divinyltoluene, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, glycerol di (meth) acrylate, and trimethylolpropane tri (meth).
- Poly (meth) acrylates such as acrylate, methylenebisacrylamide, and the like can also be used. However, since poly (meth) acrylate, methylenebisacrylamide and the like are easily hydrolyzed, it is preferable to use an aromatic divinyl compound. Most preferred is divinylbenzene.
- the addition rate is in the range of 0.1 to 50% by weight, preferably 0.1 to 20% by weight, based on the monomer. If the amount exceeds 5% by mass, it is difficult to obtain spherical particles with N-vinylcarboxylic acid amide alone. Therefore, it is preferable to use a monomer copolymerizable with N-vinylcarboxylic acid amide.
- the addition rate of the monomer capable of copolymerization is used in the range of 50% by mass or less based on the total monomers. In particular, acrylonitrile is preferably used.
- polymerization initiator examples include azo and peroxide polymerization initiators such as 2,2′-azobis (2,4-dimethylvaleronitrile), 2,2′-azobis (4-methoxy-2,4-dimethylvalero). Nitrile), 2,2′-azobis (2-methylpropionitrile), 2,2′-azobis-2-amidinopropane hydrochloride, 4,4′-azobis-4-cyanovaleric acid, 2,2′-azobis [2- (5-methyl-imidazolin-2-yl) propane] hydrochloride, 2,2′-azobis [2- (2-imidazolin-2-yl) propane] hydrochloride, etc., ammonium peroxodisulfate or potassium, Hydrogen oxide, benzoyl peroxide, lauroyl peroxide, octanoyl peroxide, succinic peroxide, t-butylperoxy-2 Ethylhexanoate, and the like.
- oil-soluble initiators such as 2,2'-azobis (2,4-dimethylvaleronitrile) and 2,2'-azobis (4-methoxy-2,4-dimethylvaleronitrile) are preferred. Further, two or more initiators may be used in combination.
- the addition rate is usually 0.02 to 5% by mass, preferably 0.05 to 2% by mass, based on the monomer.
- the salt examples include ammonium sulfate, sodium sulfate, ammonium chloride, sodium chloride, calcium chloride and the like, and among these, ammonium sulfate is particularly preferable. These may be used alone or in combination.
- the addition rate is in the range of 50 to 100% by mass with respect to water. If it is less than 50% by mass, the N-vinylcarboxylic acid amide is not separated into two phases, and the effect of the salt is sufficiently obtained at 100% by mass. It is not economical to add over 100% by mass. 60 to 90% by mass is preferable.
- a polymer dispersant is preferable.
- the polymer dispersant can be used either ionic or nonionic, but is preferably ionic.
- a cationic monomer (meth) acryloyloxyethyltrimethylammonium chloride, dimethyldiallylammonium chloride, or the like is polymerized, but the co-polymerization of these cationic monomers and nonionic monomers. Coalescence can also be used.
- nonionic monomers include acrylamide, N-vinylformamide, N-vinylacetamide, N-vinylpyrrolidone, N, N′-dimethylacrylamide, acrylonitrile, diacetone acrylamide, 2-hydroxyethyl (meth) acrylate, and the like.
- nonionic polymer dispersant include polyvinyl alcohol and polyethylene glycol polyacrylamide.
- the weight average molecular weight of the ionic polymer dispersant is 5,000 to 2,000,000, preferably 50,000 to 1,000,000.
- the weight average molecular weight of the nonionic polymer dispersant is 1000 to 100,000, preferably 1000 to 50,000.
- the addition rate is usually 0.05 to 5% by mass, preferably 0.1 to 2% by mass, based on water.
- the polymerization reaction is usually carried out at a temperature of 30 ° C. to 100 ° C. and for a time of 1 hour to 15 hours.
- salt, dispersant, unreacted monomer and the like can be removed by washing with water.
- the copolymer particles are purified by the method described above and then subjected to hydrolysis.
- Hydrolysis of N-vinylcarboxylic acid amide crosslinked polymer particles can be carried out under basic and acidic conditions, but in order to obtain free polyvinylamine crosslinked polymer particles, hydrolysis is required under basic conditions. Is preferred. In order to obtain salt-type polyvinylamine crosslinked polymer particles, it is preferable to hydrolyze under acidic conditions.
- a suitable base for hydrolysis is not particularly limited as long as the pH can be adjusted to a range of 8 to 14 during hydrolysis, and an aqueous solution of sodium hydroxide, potassium hydroxide or ammonia is most preferably used.
- the addition ratio is preferably 0.05 to 2.0, more preferably 0.4 to 1.2 equivalents relative to the formyl group of the polymer.
- the acid suitable for the hydrolysis is not limited as long as the pH can be adjusted within the range of 0 to 5 during the hydrolysis, and is an inorganic acid such as hydrohalic acid, sulfuric acid, nitric acid, phosphoric acid, carbon number of 1
- examples thereof include organic acids such as mono- and dicarboxylic acids, sulfonic acids, benzene sulfonic acids, and toluene sulfonic acids in the range of ⁇ 5, and it is particularly preferable to use hydrohalic acid and hydrogen halide gas, and use hydrohalic acid.
- the addition ratio is preferably 0.05 to 2.0, more preferably 0.4 to 1.2 equivalents relative to the formyl group of the polymer.
- Polyvinylamine crosslinked polymer particles can be obtained by washing with water after hydrolysis. In the case of base hydrolysis, free-type purified polyvinylamine crosslinked polymer particles are obtained, and in the case of acid hydrolysis, salt-type purified polyvinylamine crosslinked polymer particles are obtained.
- Polyvinylamine crosslinked polymer particles obtained by the production method of the present invention are pure water for semiconductor production, nuclear power, thermal power generation, pharmaceutical / cosmetic use, etc. in addition to gas treatment use and general water treatment use. It is used for the production of water, process water, boiler water, reaction solution, desalting from fermentation broth, adsorption of acidic substances, formaldehydes and metal ions from wastewater, adsorption treatment of organic compounds, etc.
- the crosslinked polymer particles in the present invention are spherical, when used in a column as an adsorbent, the packing efficiency is high, the flow path is stable, and the separation efficiency is increased. Also, there is an advantage that the adsorption capacity with the target substance is increased and the treatment capacity is improved.
- Example 1 Polymerization reaction
- demineralized water 50.0 g
- ammonium sulfate 30.0 g
- polyacryloyloxyethyltrimethylammonium chloride aqueous solution polymer concentration 20 mass%, weight average molecular weight 800,000.
- N-vinylformamide 29.95 g, 55 mass% divinylbenzene 0.15 g, azo polymerization initiator 2, 2′-azobis (2,4-dimethylvaleronitrile) (V-65, manufactured by Wako Pure Chemical Industries, Ltd.) ) 0.08 g was mixed to obtain a monomer solution.
- the monomer solution and the polymerization bath were mixed and stirred at 200 rpm while replacing the inside of the flask with nitrogen. After 30 minutes, the temperature was raised and polymerization was carried out at 65 ° C. for 1 hour and then at 70 ° C. for 2 hours. After polymerization, it was filtered, washed with water, and filtered to obtain 344 g of polymer spherical particles containing water. The solid content rate was 6.0%.
- Example 2 Polymerization reaction
- demineralized water Into a 300 mL four-necked flask was charged 50.2 g of demineralized water, 32.2 g of ammonium sulfate, and 1.00 g of a polyacryloyloxyethyltrimethylammonium chloride aqueous solution (polymer concentration 20 mass%, weight average molecular weight 800,000). , Stirred and dissolved to form a polymerization bath.
- Example 3 Polymerization reaction
- N-vinylformamide 1.0 g of 55% by weight divinylbenzene, azo polymerization initiator 2, 2′-azobis (2,4-dimethylvaleronitrile) (V-65, manufactured by Wako Pure Chemical Industries, Ltd.) ) 0.08 g was mixed to obtain a monomer solution.
- the monomer solution and the polymerization bath were mixed, and stirred at 250 rpm while replacing the inside of the flask with nitrogen. After 30 minutes, the temperature was raised and polymerization was carried out at 65 ° C. for 1 hour and then at 70 ° C. for 3 hours. After polymerization, it was filtered, washed with water, and filtered to obtain 79.4 g of polymer spherical particles containing water. The solid content was 14.5%.
- Example 4 Polymerization reaction
- demineralized water 50.1 g
- ammonium sulfate 32.0 g
- polyacryloyloxyethyltrimethylammonium chloride aqueous solution polymer concentration 20 mass%, weight average molecular weight 800,000.
- Example 5 Polymerization reaction 50.1 g of demineralized water, 32.0 g of ammonium sulfate, and 1.04 g of polyacryloyloxyethyltrimethylammonium chloride aqueous solution (polymer concentration 20% by mass, weight average molecular weight 800,000) were put into a 300 mL four-necked flask. , Stirred and dissolved to form a polymerization bath.
- Example 6 Polymerization reaction 49.3 g of demineralized water, 32.0 g of ammonium sulfate, 1.19 g of polyacryloyloxyethyltrimethylammonium chloride aqueous solution (polymer concentration 20% by mass, weight average molecular weight 800,000) were charged into a 300 mL four-necked flask. , Stirred and dissolved to form a polymerization bath.
- N-vinylformamide 18.01 g, divinylbenzene (manufactured by Wako Pure Chemical Industries, Ltd.) 1.02 g, acrylonitrile 1.06 g, azo polymerization initiator 2, 2′-azobis (4-methoxy-2,4-dimethyl) 0.06 g of valeronitrile (V-70, manufactured by Wako Pure Chemical Industries, Ltd.) was mixed to obtain a monomer solution. The monomer solution and the polymerization bath were mixed and stirred at 300 rpm while replacing the inside of the flask with nitrogen. After 30 minutes, the temperature was raised, and polymerization was carried out at 45 ° C. for 2 hours and then at 60 ° C. for 1 hour. After polymerization, filtration, washing with water and filtration were performed to obtain 51.1 g of polymer spherical particles in a water-containing state. The solid content was 31.7%.
- Example 7 Polymerization reaction 98.39 g of demineralized water, 64.04 g of ammonium sulfate, and 2.21 g of polyacryloyloxyethyltrimethylammonium chloride aqueous solution (polymer concentration 20% by mass, weight average molecular weight 800,000) were charged into a 300 mL four-necked flask. , Stirred and dissolved to form a polymerization bath.
- the monomer solution and the polymerization bath were mixed and stirred at 200 rpm while replacing the inside of the flask with nitrogen. After 30 minutes, the temperature was raised and polymerization was carried out at 65 ° C. for 1 hour and then at 70 ° C. for 2 hours. After polymerization, it was filtered, washed with water, and filtered, but the obtained polymer had an indefinite shape, and spherical particles were not obtained.
Abstract
Description
(重合反応)300mLの4つ口フラスコに脱塩水50.0g、硫酸アンモニウム30.0g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)0.97gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド29.95g、55質量%ジビニルベンゼン0.15g、アゾ系重合開始剤2、2’-アゾビス(2、4-ジメチルバレロニトリル)(V-65、和光純薬工業(株)製)0.08gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら200rpmで撹拌した。30分後昇温し、65℃で1時間、続いて70℃で2時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子344gを得た。固形分率は6.0%であった。
(重合反応)300mLの4つ口フラスコに脱塩水50.2g、硫酸アンモニウム32.2g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)1.00gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド19.62g、55質量%ジビニルベンゼン0.44g、アゾ系重合開始剤2、2’-アゾビス(2、4-ジメチルバレロニトリル)(V-65、和光純薬工業(株)製)0.08gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら200rpmで撹拌した。30分後昇温し、60℃で2時間、続いて70℃で2時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子113.2gを得た。固形分率は12.4%であった。
(重合反応)300mLの4つ口フラスコに脱塩水50.0g、硫酸アンモニウム35.2g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)1.05gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド19.0g、55質量%ジビニルベンゼン1.0g、アゾ系重合開始剤2、2’-アゾビス(2、4-ジメチルバレロニトリル)(V-65、和光純薬工業(株)製)0.08gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら250rpmで撹拌した。30分後昇温し、65℃で1時間、続いて70℃で3時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子79.4gを得た。固形分率は14.5%であった。
(重合反応)300mLの4つ口フラスコに脱塩水50.1g、硫酸アンモニウム32.0g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)0.97gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド19.8g、55質量%ジビニルベンゼン0.23g、アゾ系重合開始剤2、2’-アゾビス(2、4-ジメチルバレロニトリル)(V-65、和光純薬工業(株)製)0.08gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら250rpmで撹拌した。30分後昇温し、60℃で2時間、続いて70℃で3時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子168.2gを得た。固形分率は8.2%であった。
(重合反応)300mLの4つ口フラスコに脱塩水50.1g、硫酸アンモニウム32.0g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)1.04gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド30.0g、55質量%ジビニルベンゼン0.15g、アゾ系重合開始剤2、2’-アゾビス(4-メトキシ-2、4-ジメチルバレロニトリル)(V-70、和光純薬工業(株)製)0.09gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら250rpmで撹拌した。30分後昇温し、40℃で1.5時間、続いて60℃で1.5時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子364.1gを得た。固形分率は6.5%であった。
(重合反応)300mLの4つ口フラスコに脱塩水49.3g、硫酸アンモニウム32.0g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)1.19gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド18.01g、ジビニルベンゼン(和光純薬工業(株)製)1.02g、アクリロニトリル1.06g、アゾ系重合開始剤2、2’-アゾビス(4-メトキシ-2、4-ジメチルバレロニトリル)(V-70、和光純薬工業(株)製)0.06gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら300rpmで撹拌した。30分後昇温し、45℃で2時間、続いて60℃で1時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子51.1gを得た。固形分率は31.7%であった。
(重合反応)300mLの4つ口フラスコに脱塩水98.39g、硫酸アンモニウム64.04g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)2.21gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド28.85g、ジビニルベンゼン(和光純薬工業(株)製)3.22g、アクリロニトリル8.03g、アゾ系重合開始剤2、2’-アゾビス(4-メトキシ-2、4-ジメチルバレロニトリル)(V-70、和光純薬工業(株)製)0.12gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら300rpmで撹拌した。30分後昇温し、45℃で2時間、続いて60℃で1時間重合した。重合後濾過、水洗し、濾過し、含水状態の重合体球状粒子72.8gを得た。固形分率は45.8%であった。
(重合反応)300mLの4つ口フラスコに脱塩水50.0g、ポリアクリロイルオキシエチルトリメチルアンモニウム塩化物水溶液(ポリマー濃度20質量%、重量平均分子量80万)0.97gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド29.95g、55質量%ジビニルベンゼン0.15g、アゾ系重合開始剤2、2’-アゾビス(2、4-ジメチルバレロニトリル)(V-65、和光純薬工業(株)製)0.08gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら200rpmで撹拌した。30分後昇温し、65℃で1時間、続いて70℃で2時間重合した。重合後濾過、水洗し、濾過したが、得られた重合体は不定形状であり、球状粒子は得られなかった。
(重合反応)300mLの4つ口フラスコに脱塩水50.0g、硫酸アンモニウム30.0gを投入し、撹拌し、溶解させ、重合浴とした。N-ビニルホルムアミド29.95g、55質量%ジビニルベンゼン0.15g、アゾ系重合開始剤2、2’-アゾビス(2、4-ジメチルバレロニトリル)(V-65、和光純薬工業(株)製)0.08gを混合し、モノマー溶液とした。モノマー溶液と重合浴を混合、窒素でフラスコ内を置換しながら200rpmで撹拌した。30分後昇温し、65℃で1時間、続いて70℃で2時間重合した。重合後濾過、水洗し、濾過したが、得られた重合体は不定形状であり、球状粒子は得られなかった。
Claims (3)
- N-ビニルカルボン酸アミドとポリビニル化合物を含有する塩水中で分散剤存在下、懸濁重合して得た架橋重合体粒子を加水分解して製造することを特徴とするポリビニルアミン架橋重合体粒子の製造方法。
- 前記塩水中にN-ビニルカルボン酸アミドとポリビニル化合物、更にアクリロニトリルを含有することを特徴とする請求項1に記載の製造方法。
- 前記ポリビニル化合物がジビニルベンゼンであることを特徴とする請求項1あるいは2に記載の製造方法。
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JP2018172478A (ja) * | 2017-03-31 | 2018-11-08 | ハイモ株式会社 | 両性架橋重合体粒子及びその製造方法 |
JP2019217432A (ja) * | 2018-06-18 | 2019-12-26 | オルガノ株式会社 | 浄水器用カートリッジ及び軟化用浄水器 |
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