JPH03708A - Water-absorptive material - Google Patents
Water-absorptive materialInfo
- Publication number
- JPH03708A JPH03708A JP13565289A JP13565289A JPH03708A JP H03708 A JPH03708 A JP H03708A JP 13565289 A JP13565289 A JP 13565289A JP 13565289 A JP13565289 A JP 13565289A JP H03708 A JPH03708 A JP H03708A
- Authority
- JP
- Japan
- Prior art keywords
- water
- polymer
- crosslinking
- degree
- pyridine skeleton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title abstract description 3
- 229920000642 polymer Polymers 0.000 claims abstract description 30
- 230000002378 acidificating effect Effects 0.000 claims abstract description 15
- 238000004132 cross linking Methods 0.000 claims abstract description 15
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004480 active ingredient Substances 0.000 claims abstract 3
- 239000007864 aqueous solution Substances 0.000 claims description 21
- 239000011358 absorbing material Substances 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 7
- 150000003839 salts Chemical group 0.000 abstract description 6
- 239000003431 cross linking reagent Substances 0.000 abstract description 5
- KFDVPJUYSDEJTH-UHFFFAOYSA-N 4-ethenylpyridine Chemical compound C=CC1=CC=NC=C1 KFDVPJUYSDEJTH-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000178 monomer Substances 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 235000011054 acetic acid Nutrition 0.000 description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- FCMUPMSEVHVOSE-UHFFFAOYSA-N 2,3-bis(ethenyl)pyridine Chemical compound C=CC1=CC=CN=C1C=C FCMUPMSEVHVOSE-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 2
- OHFQAZVYTLCHMK-UHFFFAOYSA-N 4-ethenyl-3-methylpyridine Chemical compound CC1=CN=CC=C1C=C OHFQAZVYTLCHMK-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000010526 radical polymerization reaction Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- ZCYXFITUYVYSJW-UHFFFAOYSA-N 1-ethenylisoquinoline Chemical compound C1=CC=C2C(C=C)=NC=CC2=C1 ZCYXFITUYVYSJW-UHFFFAOYSA-N 0.000 description 1
- YQUDMNIUBTXLSX-UHFFFAOYSA-N 2-ethenyl-5-ethylpyridine Chemical compound CCC1=CC=C(C=C)N=C1 YQUDMNIUBTXLSX-UHFFFAOYSA-N 0.000 description 1
- VMWGBWNAHAUQIO-UHFFFAOYSA-N 2-ethenyl-6-methylpyridine Chemical compound CC1=CC=CC(C=C)=N1 VMWGBWNAHAUQIO-UHFFFAOYSA-N 0.000 description 1
- XUGNJOCQALIQFG-UHFFFAOYSA-N 2-ethenylquinoline Chemical compound C1=CC=CC2=NC(C=C)=CC=C21 XUGNJOCQALIQFG-UHFFFAOYSA-N 0.000 description 1
- DPZYLEIWHTWHCU-UHFFFAOYSA-N 3-ethenylpyridine Chemical compound C=CC1=CC=CN=C1 DPZYLEIWHTWHCU-UHFFFAOYSA-N 0.000 description 1
- FFOLJFOMOFZLPG-UHFFFAOYSA-N 4-ethenyl-2-methylpyridine Chemical compound CC1=CC(C=C)=CC=N1 FFOLJFOMOFZLPG-UHFFFAOYSA-N 0.000 description 1
- VJOWMORERYNYON-UHFFFAOYSA-N 5-ethenyl-2-methylpyridine Chemical compound CC1=CC=C(C=C)C=N1 VJOWMORERYNYON-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- PIPBVABVQJZSAB-UHFFFAOYSA-N bis(ethenyl) benzene-1,2-dicarboxylate Chemical compound C=COC(=O)C1=CC=CC=C1C(=O)OC=C PIPBVABVQJZSAB-UHFFFAOYSA-N 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- PBGVMIDTGGTBFS-UHFFFAOYSA-N but-3-enylbenzene Chemical compound C=CCCC1=CC=CC=C1 PBGVMIDTGGTBFS-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012690 ionic polymerization Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野１ 本発明は吸水性材料及び吸水方法に関する。[Detailed description of the invention] [Industrial application field 1 The present invention relates to a water-absorbing material and a water-absorbing method.
［従来技術及び発明が解決しようとする課題］従来水と
接触すると短時間のうちに出来るだけ多くの水をとり込
む能力を有する吸水性材料について多くの提案がなされ
ている。例λばポリスチレンオキサイドの変性物、ポリ
ビニルピロリドンやスルホン化ポリスチレンの架橋せし
めたものあるいはデン粉−アクリロニトリルグラフト共
重合体のケン化物などの高分子を用いたものがある。[Prior Art and Problems to be Solved by the Invention] Conventionally, many proposals have been made regarding water-absorbing materials that have the ability to take in as much water as possible in a short period of time when they come into contact with water. For example, there are polymers such as modified polystyrene oxide, crosslinked polyvinylpyrrolidone or sulfonated polystyrene, or saponified starch-acrylonitrile graft copolymer.
このような高分子はきわめて吸水能があるが、酸性液中
では、吸水能が低下するのみならず高分子が変性してし
まい、吸水能が全く無くなってしまうことさえ起ってく
る。Such polymers have extremely good water absorption ability, but when placed in acidic liquids, not only does the water absorption ability decrease, but the polymer is denatured and may even lose its water absorption ability altogether.
又吸水した水を除去するには、かかる従来の吸水性材料
を加熱蒸発させねばならない為多くのエネルギーを要し
ている。Furthermore, in order to remove the absorbed water, the conventional water-absorbing material must be heated and evaporated, which requires a large amount of energy.
本発明の目的は酸性水溶液中でも吸水性を発揮しアルカ
リ性で脱水可能な可逆性をもつ吸水性材料及び特定の高
分子と酸性水溶液とを接触させてなる吸水方法を提供す
ることにある。An object of the present invention is to provide a reversible water-absorbing material that exhibits water-absorbing properties even in an acidic aqueous solution and can be dehydrated in alkaline conditions, and a water-absorbing method that involves bringing a specific polymer into contact with an acidic aqueous solution.
〔課題を解決するための手段Ｊ
すなわち本発明は、主鎖又は側鎖にピリジン骨格の塩を
有しかつ架橋度が４％以下である高分子（以下、高分子
（１）という）を有効成分とすることを特徴とする吸水
性材料を提供するものである。更に本発明は、主鎖又は
側鎖にピリジン骨格を有しかつ架橋度が４％以下である
高分子（以下、高分子（２）という）と酸性水溶液とを
接触させることを特徴とする吸水方法を提供するもので
ある。[Means for Solving the Problems J] In other words, the present invention effectively uses a polymer (hereinafter referred to as polymer (1)) that has a pyridine skeleton salt in its main chain or side chain and has a degree of crosslinking of 4% or less. The present invention provides a water-absorbing material characterized by comprising: Furthermore, the present invention provides a water absorption method characterized in that a polymer having a pyridine skeleton in the main chain or side chain and having a degree of crosslinking of 4% or less (hereinafter referred to as polymer (2)) is brought into contact with an acidic aqueous solution. The present invention provides a method.
高分子（２）は、ピリジン骨格を有するモノマー類を重
合させるか、高分子の主鎖又は側鎖にピリジン骨格を導
入することにより得られる。高分子（２）を酸性物質又
はその水溶液と接触させることにより本発明に於けるピ
リジン骨格の塩を有する高分子（１）を得ることができ
る。酸性物質としては、硫酸、塩酸などの鉱酸類あるい
は、ギ酸、酢酸、プロピオン酸等の有機カルボン酸や有
機スルホン酸類を用いることができる。The polymer (2) can be obtained by polymerizing monomers having a pyridine skeleton or by introducing a pyridine skeleton into the main chain or side chain of the polymer. By bringing the polymer (2) into contact with an acidic substance or an aqueous solution thereof, the polymer (1) having a salt of pyridine skeleton according to the present invention can be obtained. As the acidic substance, mineral acids such as sulfuric acid and hydrochloric acid, or organic carboxylic acids and organic sulfonic acids such as formic acid, acetic acid and propionic acid can be used.
ピリジン骨格を有するモノマー類としては、例えば２−
ビニルピリジン、３−ビニルピリジン。Examples of monomers having a pyridine skeleton include 2-
Vinylpyridine, 3-vinylpyridine.
４−ビニルピリジン、２−メチル−５−ビニルピリジン
、３−メチル−４−ビニルピリジン、２−メチル−６−
ビニルピリジン、５−エチル−２−ビニルピリジン、４
−ビニル−２−メチルピリジン、ビニルキノリン、ビニ
ルイソキノリン等があげられる。これらのうちでも本発
明の目的のためにはビニルピリジン類を用いるのが便利
である。4-vinylpyridine, 2-methyl-5-vinylpyridine, 3-methyl-4-vinylpyridine, 2-methyl-6-
Vinylpyridine, 5-ethyl-2-vinylpyridine, 4
-vinyl-2-methylpyridine, vinylquinoline, vinylisoquinoline and the like. Among these, it is convenient to use vinylpyridines for the purpose of the present invention.
本発明に於ける高分子（１）及び（２）の架橋は、架橋
剤を用いて行なうのが便利である。架橋剤としては、通
常ジビニルベンゼンを用いる。使用するジビニルベンゼ
ンとしては、ジビニルベンゼンの他にビニルエチルベン
ゼン等が含まれているものを用いても良い。ジビニルフ
タレートやエチレングリコールジアクリレート等のビニ
ルエステル類も架橋剤として用いることが出来るが、耐
酸性の問題からジビニルベンゼンを用いることが好まし
い、従って高分子（２）及び（１）は、それぞれビニル
ピリジン類とジビニルピリジン類を重合させて得られる
共重合体及びこの共重合体の塩が好ましい０本発明に用
いられる高分子（２）及び（１）として、ビニルピリジ
ン類のみの塊状重合あるいは懸濁重合より得られるホモ
ポリマー及びこのホモポリマーの塩でも充分にそれぞれ
の本発明の目的を達成することができる。In the present invention, it is convenient to crosslink the polymers (1) and (2) using a crosslinking agent. Divinylbenzene is usually used as a crosslinking agent. The divinylbenzene to be used may contain vinylethylbenzene or the like in addition to divinylbenzene. Vinyl esters such as divinyl phthalate and ethylene glycol diacrylate can also be used as crosslinking agents, but it is preferable to use divinylbenzene due to acid resistance issues. Therefore, polymers (2) and (1) are vinylpyridine, respectively. A copolymer obtained by polymerizing divinylpyridine and divinylpyridine and a salt of this copolymer are preferred.As polymers (2) and (1) used in the present invention, bulk polymerization or suspension of only vinylpyridine is preferred. Homopolymers obtained by polymerization and salts of these homopolymers can also sufficiently achieve the respective objects of the present invention.
本発明に於ける架橋度は、４％以下であり好ましくは０
．２％〜１％である。架橋度を有する高分子の場合には
、架橋度の問題がきわめて重要である。架橋度が大きす
ぎると吸水能が不充分であり、少なすぎると水への溶解
をきたすこともある。ビニルピリジン類と架橋剤との重
合法は、イオン重合、ラジカル重合等いかなる方法でも
よいがラジカル重合法が便利である。The degree of crosslinking in the present invention is 4% or less, preferably 0.
．． It is 2% to 1%. In the case of polymers with a degree of crosslinking, the question of degree of crosslinking is extremely important. If the degree of crosslinking is too large, the water absorption capacity will be insufficient, and if it is too small, it may dissolve in water. The polymerization method for vinylpyridines and the crosslinking agent may be any method such as ionic polymerization or radical polymerization, but radical polymerization is convenient.
酸性物質を含む水溶液を用いて吸水するにあったでは、
高分子（１）を吸水性材料として用いる他に、高分子（
２）を当該水溶液中に入れることによっても行なうこと
ができる１通常、高分子（２）を酸性物質を含む水溶液
の中に入れるのが便利である。酸性物質の水溶液の中に
入れることにより高分子（２）は、ピリジン骨格の塩と
なると同時に吸水能を発揮し吸水する。When absorbing water using an aqueous solution containing an acidic substance,
In addition to using polymer (1) as a water-absorbing material, polymer (
2) can also be carried out by placing the polymer (2) in the aqueous solution.1 It is usually convenient to place the polymer (2) in an aqueous solution containing an acidic substance. When placed in an aqueous solution of an acidic substance, the polymer (2) becomes a salt of the pyridine skeleton and at the same time exhibits water absorption ability and absorbs water.
本発明における酸性水溶液は前記のごとき酸性物質を含
有する水溶液である。The acidic aqueous solution in the present invention is an aqueous solution containing the above-mentioned acidic substances.
本発明の吸水性材料は、酸性水溶液の固化、ゲル化剤と
して有用である。又吸水された水の脱着も可能である。The water-absorbing material of the present invention is useful as a solidifying and gelling agent for acidic aqueous solutions. It is also possible to desorb absorbed water.
すなわち本発明の吸水性材料を用いて水を吸収させた後
、吸水した材料をアルカリ性水溶液に加えると吸水した
水をほとんど脱水させる特性を有している。That is, after water is absorbed using the water-absorbing material of the present invention, when the absorbed material is added to an alkaline aqueous solution, it has the property of dehydrating most of the absorbed water.
本発明の高分子（１）及び（２）は、耐酸性を有してい
る特徴を有している。従って、水を吸収した後に該高分
子を加熱しても吸水性材料の特性を失わない。The polymers (1) and (2) of the present invention are characterized by having acid resistance. Therefore, even if the polymer is heated after absorbing water, it will not lose its properties as a water-absorbing material.
次に本発明を実施例を用いて説明する。Next, the present invention will be explained using examples.
実施例１
４−ビニルピリジンｌｏｇ、ジビニルベンゼン（５５％
純度品）０．２ｇの混合物にベンゾイルパーオキサイド
Ｏ，１ｇを溶解し５０℃で一夜放置した。放置後、塊状
樹脂を粉砕して取出した。Example 1 4-vinylpyridine log, divinylbenzene (55%
1 g of benzoyl peroxide O was dissolved in a mixture of 0.2 g (purity product) and left overnight at 50°C. After standing, the lumpy resin was crushed and taken out.
この樹脂を熱水で洗條後乾燥し、ビニルピリジン−ジビ
ニルベンゼン共重合体（架橋度１％）を得た。This resin was washed with hot water and dried to obtain a vinylpyridine-divinylbenzene copolymer (degree of crosslinking: 1%).
この樹脂１ｇを１００ｍ℃の１０％酢酸水溶液に入れた
ところ、酢酸水溶液はゲル状に固化した。When 1 g of this resin was placed in a 10% acetic acid aqueous solution at 100 m°C, the acetic acid aqueous solution solidified into a gel-like state.
実施例２
実施例１で合成したビニルビリジンージビニルベンゼン
共重合体１ｇを８０℃の３０％硫酸水溶液に浸したとこ
ろ１０倍の吸水率を示した。該樹脂をＩ ＮＮａＯＨ中
に徐々に加えたところ、吸水した水分を脱離した粉状樹
脂が、ＮａＯＨ水溶液中に沈殿した。Example 2 When 1 g of the vinylpyridine-divinylbenzene copolymer synthesized in Example 1 was immersed in a 30% aqueous sulfuric acid solution at 80°C, it exhibited a water absorption rate that was 10 times higher. When the resin was gradually added to IN NaOH, the powdered resin from which absorbed water was released precipitated in the NaOH aqueous solution.
この樹脂をよ（水洗乾燥した後、３０％硫酸水溶液に再
度浸したところやはり１０倍の吸水率を示した。After washing and drying this resin, it was again immersed in a 30% sulfuric acid aqueous solution, and it also showed a 10 times higher water absorption rate.
実施例３
２−ビニルピリジンＬｏｇ、８０％純度のジビニルベン
ゼン０．１ｇ、ベンゾイルパーオキサイド０．１ｇを１
００ｇ水溶液中ポリビニルアルコールを懸濁安定剤とし
て懸濁させ７０℃で５時間重合した。得られたポリマー
（架橋度０．８％）をよく水洗した後、１０％のギ酸水
溶液に入れたところ５０倍の吸水率を示した。Example 3 2-vinylpyridine Log, 80% purity divinylbenzene 0.1g, benzoyl peroxide 0.1g 1
Polyvinyl alcohol was suspended in a 00g aqueous solution as a suspension stabilizer and polymerized at 70°C for 5 hours. After thoroughly washing the obtained polymer (crosslinking degree: 0.8%) with water, it was placed in a 10% formic acid aqueous solution and showed a water absorption rate of 50 times.
実施例４
３−メチル−４−ビニルピリジンＬｏｇ、アゾビスイソ
ブチロニトリルＯ，１ｇの混合液を１００ｇの水及びＯ
，Ｏｌｇのポリビニルアルコールを含む混合溶液中で懸
濁させなから８０’Ｃで５時間重合した。得られたポリ
マーをよく水洗した後、４０％Ｈ２Ｓｏ４に浸したとこ
ろ２５倍の吸水率を示した。Example 4 A mixed solution of 3-methyl-4-vinylpyridine Log and azobisisobutyronitrile O, 1 g was mixed with 100 g of water and O.
, Olg in a mixed solution containing polyvinyl alcohol, and then polymerized at 80'C for 5 hours. After the obtained polymer was thoroughly washed with water, it was immersed in 40% H2So4 and showed a water absorption rate of 25 times.
実施例５
実施例４で合成した樹脂を用いて１０％酢酸水溶液に浸
したところ１５０倍の吸水率を示した。Example 5 When the resin synthesized in Example 4 was immersed in a 10% acetic acid aqueous solution, it exhibited a water absorption rate of 150 times.
この吸水樹脂を８０℃で乾燥後水の中に入れたところ乾
燥前と同じ結果となった。When this water-absorbing resin was dried at 80° C. and then put into water, the same results as before drying were obtained.
実施例６
実施例４で合成した樹脂を用いて１０％ギ酸水溶液に浸
したところ１００倍の吸収率を示した６実施例７
ジビニルベンゼンを０．７３ｇに変えた以外は実施例１
と同様にしてビニルピリジン−ジビニルベンゼン共重合
体（架橋度４％）を得た。Example 6 When the resin synthesized in Example 4 was immersed in a 10% formic acid aqueous solution, the absorption rate was 100 times higher.Example 7 Example 1 except that divinylbenzene was changed to 0.73g.
A vinylpyridine-divinylbenzene copolymer (crosslinking degree: 4%) was obtained in the same manner as above.
この樹脂を用いて実施例２と同様にして吸水試験を行な
ったところ、吸水率は５倍であった。When a water absorption test was conducted using this resin in the same manner as in Example 2, the water absorption rate was 5 times higher.
比較例
ジビニルベンゼンを１．１ｇに変えた以外は実施例１と
同様にしてビニルピリジン−ジビニルベンゼン共重合体
（架橋度６％）を得た。Comparative Example A vinylpyridine-divinylbenzene copolymer (degree of crosslinking: 6%) was obtained in the same manner as in Example 1, except that 1.1 g of divinylbenzene was used.
この樹脂を用いて実施例２と同様にして吸水試験を行な
ったところ、吸水率は２倍であった。When a water absorption test was conducted using this resin in the same manner as in Example 2, the water absorption rate was twice as high.
Claims (1)
が４％以下である高分子を有効成分とすることを特徴と
する吸水性材料。 ２、主鎖又は側鎖にピリジン骨格を有しかつ架橋度が４
％以下である高分子と酸性水溶液とを接触させることを
特徴とする吸水方法。[Scope of Claims] 1. A water-absorbing material characterized by containing as an active ingredient a polymer having a pyridine skeleton salt in its main chain or side chain and having a degree of crosslinking of 4% or less. 2. Has a pyridine skeleton in the main chain or side chain and has a crosslinking degree of 4
% or less and an acidic aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13565289A JPH03708A (en) | 1989-05-29 | 1989-05-29 | Water-absorptive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13565289A JPH03708A (en) | 1989-05-29 | 1989-05-29 | Water-absorptive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03708A true JPH03708A (en) | 1991-01-07 |
Family
ID=15156797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13565289A Pending JPH03708A (en) | 1989-05-29 | 1989-05-29 | Water-absorptive material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07508985A (en) * | 1992-07-08 | 1995-10-05 | ジ・アップジョン・カンパニー | 5'-indolinyloxazolidinones effective against Mycobacterium tuberculosis |
-
1989
- 1989-05-29 JP JP13565289A patent/JPH03708A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07508985A (en) * | 1992-07-08 | 1995-10-05 | ジ・アップジョン・カンパニー | 5'-indolinyloxazolidinones effective against Mycobacterium tuberculosis |
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