JPS6337143A - Highly water-absorbing composition - Google Patents
Highly water-absorbing compositionInfo
- Publication number
- JPS6337143A JPS6337143A JP61180588A JP18058886A JPS6337143A JP S6337143 A JPS6337143 A JP S6337143A JP 61180588 A JP61180588 A JP 61180588A JP 18058886 A JP18058886 A JP 18058886A JP S6337143 A JPS6337143 A JP S6337143A
- Authority
- JP
- Japan
- Prior art keywords
- water
- metal salt
- polyvalent metal
- carboxymethylcellulose
- cmc
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 10
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 22
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 22
- 150000003839 salts Chemical class 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 8
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 8
- 239000002250 absorbent Substances 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 abstract description 8
- 238000006467 substitution reaction Methods 0.000 abstract description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 3
- 238000010494 dissociation reaction Methods 0.000 abstract 1
- 230000005593 dissociations Effects 0.000 abstract 1
- 150000001455 metallic ions Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000011358 absorbing material Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- 239000000499 gel Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 235000011126 aluminium potassium sulphate Nutrition 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 229940050271 potassium alum Drugs 0.000 description 2
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- 241001237961 Amanita rubescens Species 0.000 description 1
- 241001312219 Amorphophallus konjac Species 0.000 description 1
- 235000001206 Amorphophallus rivieri Nutrition 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002752 Konjac Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salts Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229940009827 aluminum acetate Drugs 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 229940035676 analgesics Drugs 0.000 description 1
- 239000000730 antalgic agent Substances 0.000 description 1
- 239000002260 anti-inflammatory agent Substances 0.000 description 1
- 229940121363 anti-inflammatory agent Drugs 0.000 description 1
- 230000002921 anti-spasmodic effect Effects 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 150000001661 cadmium Chemical class 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000000812 cholinergic antagonist Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 229960003280 cupric chloride Drugs 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000003898 horticulture Methods 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000252 konjac Substances 0.000 description 1
- 235000010485 konjac Nutrition 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 235000011962 puddings Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007885 tablet disintegrant Substances 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は高吸水性組成物に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to superabsorbent compositions.
詳しくは、カルボキシメチルセルロース（以下ＣＭＣと
略称する）と多価金属塩を混合して成り、吸水能と吸水
後のゲルの状態に優れた吸水性組成物に関するものであ
る。Specifically, the present invention relates to a water-absorbing composition that is made by mixing carboxymethyl cellulose (hereinafter abbreviated as CMC) and a polyvalent metal salt and has excellent water-absorbing ability and gel state after water absorption.
（従来技術および問題点）
これまで、ＣＭＣを吸水材として利用するものとして、
例えば特公昭４７−１７９６５号公報に、ＣＭＣとエピ
クロルヒドリンとを反応させてほとんど水不溶性にした
ものが提案されている。(Prior art and problems) Until now, CMC has been used as a water absorbing material.
For example, Japanese Patent Publication No. 47-17965 proposes a product in which CMC is reacted with epichlorohydrin to make it almost water-insoluble.
しかし、このＣＭＣの架橋物は吸水能がそれほど大ぎく
なく、特に生理食塩水等の塩類を含む水溶液に対しては
大きな吸水能が得られない。また、吸水後のゲル状態も
離水、軟化などを起し易く、満足できるものでなかった
。However, this CMC crosslinked product does not have a very large water absorption capacity, and in particular cannot obtain a large water absorption capacity for aqueous solutions containing salts such as physiological saline. In addition, the gel state after water absorption was unsatisfactory because it was prone to syneresis and softening.
本発明者は、これらの欠点を改良づべく鋭意検討を重ね
た結果、ＣＭＣと多価金属塩の混合物が吸水材として優
れた性能を有していることを見出し、本発明を完成する
に至った。As a result of intensive studies aimed at improving these drawbacks, the present inventor discovered that a mixture of CMC and a polyvalent metal salt has excellent performance as a water absorbing material, and was able to complete the present invention. Ta.
（問題点を解決するための手段）
すなわち、本発明はカルボキシメチルセルロースと多価
金ｒｉＡ塩を必須成分として成る高吸水性組成物である
。(Means for Solving the Problems) That is, the present invention is a highly water-absorbing composition comprising carboxymethylcellulose and polyvalent gold RIA salt as essential components.
本発明に使用されるＣＭＣには、カルボキシメチルセル
ロースのナトリウム塩、カリウム塩などのアルカリ金属
塩やアンモニウム塩などが挙げられる。また、ＣＭＣの
置換度（Ｏ８）、粘度は特に限定されるものではなく、
置換度は０，３〜２．８の範囲のもの、粘度は１０％０
％水溶液粘５００ｃｐｓ稈度の低結晶から１％水溶液粘
度が１０．０ＯＯｃｐｓ程度の高結晶までの範囲から用
途、目的に応じて選ぶことができる。CMC used in the present invention includes alkali metal salts such as sodium salts and potassium salts of carboxymethylcellulose, and ammonium salts. In addition, the degree of substitution (O8) and viscosity of CMC are not particularly limited,
The degree of substitution is in the range of 0.3 to 2.8, and the viscosity is 10%0.
It can be selected depending on the use and purpose from a range of low crystals with a % aqueous solution viscosity of 500 cps and culm degree to high crystals with a 1% aqueous solution viscosity of about 10.0 OO cps.
本発明に使用される多価金属塩としては、酢酸アルミニ
ウム、硫酸アルミニウム、硝酸アルミニウム、カリミョ
ウバン、塩化アルミニウム、などのアルミニウム塩、塩
化第一鉄、塩化第二鉄、硫酸二鉄などの鉄塩、塩化第二
銅、硫酸第二銅などの銅塩、その能無様または有機のマ
グネシウム塩、バリウム塩、カルシウム塩、マンガン塩
、カドミウム塩、クロム酸塩、チタン酸塩、アンチモン
酸塩などの一種または二種以上の混合物が挙げられる。Polyvalent metal salts used in the present invention include aluminum salts such as aluminum acetate, aluminum sulfate, aluminum nitrate, potassium alum, and aluminum chloride, and iron salts such as ferrous chloride, ferric chloride, and diferrous sulfate. , copper salts such as cupric chloride and cupric sulfate, their inactive forms or organic magnesium salts, barium salts, calcium salts, manganese salts, cadmium salts, chromates, titanates, antimonates, etc. Or a mixture of two or more types can be mentioned.
本発明を実施するには、前述のＣＭＣと多価金属塩を固
体状態でＵ合すれば良いが、この時のＣＭＣと多価金属
塩の混合比が吸水後のゲルの状態に大きな影響を与える
。吸水剤として適当な混合比は、多価金属塩に由来する
金属のモル数を［Ｍ］、多価金属塩が解離した時の金属
イオンの価数をｎ、ＣＭＣに由来するカルボキシル基の
モル数（ｌＩ！！２型、金属塩型を問わずカルボキシル
基の全量）を［−ＣＯＯＸ］とし、次式で示される範囲
が好ましい。In order to carry out the present invention, it is sufficient to combine the above-mentioned CMC and polyvalent metal salt in a solid state, but the mixing ratio of CMC and polyvalent metal salt at this time has a large effect on the state of the gel after water absorption. give. The appropriate mixing ratio for the water absorbing agent is as follows: [M] is the number of moles of metal derived from the polyvalent metal salt, n is the valence of the metal ion when the polyvalent metal salt is dissociated, and is the mole of carboxyl groups derived from CMC. The number (lI!!total amount of carboxyl groups regardless of type 2 or metal salt type) is [-COOX], and the range shown by the following formula is preferable.
１／１０ ＜ｎ ［Ｍ］／ ［−ＣＯＯＸ］ ＜１０
混合する多価金属塩の）１がこの範囲より少ないと、吸
水後のゲルが溶解状態を示して柔か過ぎ、逆にこの範囲
より多いと離水が著しい。1/10 <n [M]/ [-COOX] <10
If the amount of (1) in the polyvalent metal salt to be mixed is less than this range, the gel after absorbing water will be in a dissolved state and will be too soft, whereas if it is more than this range, syneresis will be significant.
ＣＭＣと多価金属塩を固体状態で混合する方法は特に限
定されないが、できる限り均一に混合するのが好ましい
。このために、振動ミルやボールミルなどの粉砕Ｕ合機
を用いることができるが、単に乳鉢で混合した程度でも
十分である。The method of mixing CMC and polyvalent metal salt in a solid state is not particularly limited, but it is preferable to mix them as uniformly as possible. For this purpose, a crusher and mixer such as a vibration mill or a ball mill can be used, but simply mixing in a mortar is sufficient.
（発明の効果）
本発明による高吸水性組成物は、蒸溜水及び生理食塩水
に対して高い吸水能を有し、しかも、吸水後のゲルの状
態も軟化、離水が見られず吸水性素材として勝れた性能
を発揮する。その実用的な応用例として、紙おむつ、生
理用品、工業用脱水材、農園芸用土壌保水剤、結露防止
材などのはか、湿布剤用基剤、パップ剤用基剤、外用鎮
痛・消炎・鎮痙ゲル耐用基剤、錠剤崩壊剤、芳香剤用基
剤、化粧用ベースクリーム、美顔パック剤用基剤、練り
歯ミガキ、練りオシロイ、頬紅、アイライナー、ヘアセ
ットローションなどの原料、プリン、ゼリー、コンニャ
クなどの食品の添加物、土木、石油ポーリング用逸泥防
止剤、電池用ゲル電解質用原料、電線ケーブル被覆材な
どをはじめ広範囲のものを挙げることができる。(Effects of the Invention) The highly water-absorbing composition according to the present invention has a high water-absorbing ability for distilled water and physiological saline, and the gel state after water absorption does not soften or syneresis, making it a water-absorbing material. Demonstrates superior performance. Examples of its practical applications include disposable diapers, sanitary products, industrial dehydration materials, soil water retention agents for agriculture and horticulture, dew prevention materials, poultice bases, poultice bases, topical analgesics, anti-inflammatory agents, etc. Antispasmodic gel base, tablet disintegrant, fragrance base, cosmetic base cream, facial pack base, raw materials for toothpaste, paste oshiroi, blusher, eyeliner, hair setting lotion, etc., pudding, jelly It can be used in a wide range of applications, including additives for foods such as konjac, civil engineering, anti-sludge agents for petroleum polling, raw materials for gel electrolytes for batteries, and coating materials for electric wires and cables.
以下実施例に従って具体的に説明する。A detailed explanation will be given below according to examples.
実施例１〜３
カリミョウバン［ＡＬ Ｋ （ＳＯ２）、、・１２Ｈ２
０］とＣＭＣ（置換度１．２．１％水溶液粘度２０３０
ｃｐｓ）を振動ミルを用いて粉砕混合し、吸水材とし
ての評価を行なった。混合比と吸水能を表−１に示した
。Examples 1-3 Potassium alum [AL K (SO2),, 12H2
0] and CMC (substitution degree 1.2.1% aqueous solution viscosity 2030
cps) was pulverized and mixed using a vibration mill, and evaluated as a water absorbing material. The mixing ratio and water absorption capacity are shown in Table-1.
実施例４〜５
硝Ｍ ７ ／ｌ／ ミニラム［ＡＬ（Ｎｏ ） −
９Ｈ２０１とＣＭＣ（置換度０．９１．１％水溶液粘度
１５００ｃｐｓ）を乳鉢で混合し、吸水材としての評価
を行なった。混合比と吸水能を表−１に示した。Examples 4-5 Nitric M 7 /l/Minilum [AL(No) −
9H201 and CMC (substitution degree 0.91.1% aqueous solution viscosity 1500 cps) were mixed in a mortar and evaluated as a water absorbing material. The mixing ratio and water absorption capacity are shown in Table-1.
実施例６〜９
塩化第二鉄（ＦｅＣＬ ・６Ｈ２０）とＣＭＣ（置換
度０．７２．１％水溶液粘度６２０ ｃｐｓ）を乳鉢で
混合し、吸水材としての評価を行なった。Examples 6 to 9 Ferric chloride (FeCL 6H20) and CMC (substitution degree 0.72.1% aqueous solution viscosity 620 cps) were mixed in a mortar and evaluated as water absorbing materials.
混合比と吸水能を表−１に示した。The mixing ratio and water absorption capacity are shown in Table-1.
Claims (1)
して成る高吸水性組成物。A highly water-absorbent composition containing carboxymethyl cellulose and polyvalent metal salt as essential components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61180588A JP2538213B2 (en) | 1986-07-31 | 1986-07-31 | Super absorbent composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61180588A JP2538213B2 (en) | 1986-07-31 | 1986-07-31 | Super absorbent composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6337143A true JPS6337143A (en) | 1988-02-17 |
| JP2538213B2 JP2538213B2 (en) | 1996-09-25 |
Family
ID=16085887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61180588A Expired - Fee Related JP2538213B2 (en) | 1986-07-31 | 1986-07-31 | Super absorbent composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538213B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002096953A1 (en) * | 2001-05-25 | 2002-12-05 | Stockhausen Gmbh & Co. Kg | Superabsorber, method for the production and use thereof |
| US6593468B1 (en) | 1997-10-20 | 2003-07-15 | Wolff-Walsrode Ag | Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereof |
| JP2006075054A (en) * | 2004-09-08 | 2006-03-23 | Nippon Shokubai Co Ltd | Water-holding material for growing plant, consisting mainly of biodegradable water-absorbing resin |
| JP2006075055A (en) * | 2004-09-08 | 2006-03-23 | Nippon Shokubai Co Ltd | Water-holding material for growing plant, consisting mainly of water-absorbing resin |
| WO2007015579A1 (en) | 2005-08-04 | 2007-02-08 | Teijin Limited | Cellulose derivative |
| JP2007245043A (en) * | 2006-03-17 | 2007-09-27 | Saikou:Kk | Manufacturing method of garbage-containing gel-like composition |
| US7514097B1 (en) | 1999-11-09 | 2009-04-07 | Denki Kagaku Kogyo Kabushiki Kaisha | Use of soluble cellulose derivative having been made hardly soluble in water and process for producing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980459A (en) * | 1982-10-29 | 1984-05-09 | Arakawa Chem Ind Co Ltd | Water-absorbing powdery resin composition |
| JPS59108045A (en) * | 1982-12-11 | 1984-06-22 | Daicel Chem Ind Ltd | Carboxymethylcellulose gel composition and its production |
| JPS60255814A (en) * | 1984-05-31 | 1985-12-17 | Arakawa Chem Ind Co Ltd | Production of water-absorptive resin of improved gel strength |
| JPS63118375A (en) * | 1986-06-04 | 1988-05-23 | Seitetsu Kagaku Co Ltd | Water-absorptive composition |
-
1986
- 1986-07-31 JP JP61180588A patent/JP2538213B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5980459A (en) * | 1982-10-29 | 1984-05-09 | Arakawa Chem Ind Co Ltd | Water-absorbing powdery resin composition |
| JPS59108045A (en) * | 1982-12-11 | 1984-06-22 | Daicel Chem Ind Ltd | Carboxymethylcellulose gel composition and its production |
| JPS60255814A (en) * | 1984-05-31 | 1985-12-17 | Arakawa Chem Ind Co Ltd | Production of water-absorptive resin of improved gel strength |
| JPS63118375A (en) * | 1986-06-04 | 1988-05-23 | Seitetsu Kagaku Co Ltd | Water-absorptive composition |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6593468B1 (en) | 1997-10-20 | 2003-07-15 | Wolff-Walsrode Ag | Essentially fiber-free cellulose ether with improved water retention, method for the production and use thereof |
| US7514097B1 (en) | 1999-11-09 | 2009-04-07 | Denki Kagaku Kogyo Kabushiki Kaisha | Use of soluble cellulose derivative having been made hardly soluble in water and process for producing the same |
| WO2002096953A1 (en) * | 2001-05-25 | 2002-12-05 | Stockhausen Gmbh & Co. Kg | Superabsorber, method for the production and use thereof |
| US7407912B2 (en) | 2001-05-25 | 2008-08-05 | Stockhausen Gmbh | Supersuperabsorbent polymers |
| US7612016B2 (en) | 2001-05-25 | 2009-11-03 | Evonik Stockhausen Gmbh | Preparation of superabsorbent polymers |
| JP2006075054A (en) * | 2004-09-08 | 2006-03-23 | Nippon Shokubai Co Ltd | Water-holding material for growing plant, consisting mainly of biodegradable water-absorbing resin |
| JP2006075055A (en) * | 2004-09-08 | 2006-03-23 | Nippon Shokubai Co Ltd | Water-holding material for growing plant, consisting mainly of water-absorbing resin |
| WO2007015579A1 (en) | 2005-08-04 | 2007-02-08 | Teijin Limited | Cellulose derivative |
| US8378091B2 (en) | 2005-08-04 | 2013-02-19 | Teijin Limited | Cellulose derivative |
| JP2007245043A (en) * | 2006-03-17 | 2007-09-27 | Saikou:Kk | Manufacturing method of garbage-containing gel-like composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2538213B2 (en) | 1996-09-25 |
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