JPS6058443A - High absorptive polymer composition - Google Patents
High absorptive polymer compositionInfo
- Publication number
- JPS6058443A JPS6058443A JP58165258A JP16525883A JPS6058443A JP S6058443 A JPS6058443 A JP S6058443A JP 58165258 A JP58165258 A JP 58165258A JP 16525883 A JP16525883 A JP 16525883A JP S6058443 A JPS6058443 A JP S6058443A
- Authority
- JP
- Japan
- Prior art keywords
- polymer composition
- gel
- carrageenan
- xanthan gum
- natural
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 18
- 229920000642 polymer Polymers 0.000 title abstract description 24
- 150000004676 glycans Chemical class 0.000 claims abstract description 12
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 12
- 239000005017 polysaccharide Substances 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 6
- 239000000679 carrageenan Substances 0.000 claims abstract description 6
- 235000010418 carrageenan Nutrition 0.000 claims abstract description 6
- 229920001525 carrageenan Polymers 0.000 claims abstract description 6
- 229940113118 carrageenan Drugs 0.000 claims abstract description 6
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 claims abstract description 6
- 229920001285 xanthan gum Polymers 0.000 claims abstract description 4
- 239000000230 xanthan gum Substances 0.000 claims abstract description 4
- 235000010493 xanthan gum Nutrition 0.000 claims abstract description 4
- 229940082509 xanthan gum Drugs 0.000 claims abstract description 4
- 229920000161 Locust bean gum Polymers 0.000 claims abstract description 3
- 239000000711 locust bean gum Substances 0.000 claims abstract description 3
- 235000010420 locust bean gum Nutrition 0.000 claims abstract description 3
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 229920000247 superabsorbent polymer Polymers 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 229920002752 Konjac Polymers 0.000 abstract 1
- 229920000057 Mannan Polymers 0.000 abstract 1
- 235000010485 konjac Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 description 10
- 239000002250 absorbent Substances 0.000 description 10
- 210000001124 body fluid Anatomy 0.000 description 5
- 239000010839 body fluid Substances 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229920003174 cellulose-based polymer Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010559 graft polymerization reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229940025902 konjac mannan Drugs 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Materials For Medical Uses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、市・に体液(尿、汗、経1(1等)に対して
、優れた吸収能を有するポリマー組成物に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polymer composition having an excellent absorption ability for body fluids (urine, sweat, etc.).
近時、高吸収性ポリマーは、生理111品、おむつ等の
衛生関係、保水剤としての喝園萼関係その他吸水性、保
水性を第1jJ11する種々の用途に使用され。In recent years, superabsorbent polymers have been used for a variety of purposes including sanitary products such as sanitary products, diapers, water retention agents, and other uses that require water absorption and water retention.
その有用性は、一般の認めるところとなっている。Its usefulness is generally acknowledged.
かかる状況において、現在高吸収性ポリマーとして、澱
粉系、ポリアクリル酸塩系、変性ポリビニルアルコール
系、セルロース系等の種々のものが開発されているが、
これらのポリマーは、イオン交換水に対しては、自重の
500倍乃至1,000倍程度のすくすLfc吸収能を
示すが、イオン性水溶液に対する吸収能は、50〜60
倍程度であり著しく低下する。ところが、実生活の中で
はこれら吸収性ポリマーの殆どは1体液等のイオン性水
溶液を対象とし7て使用されるため、吸収能が不充分で
あり、イオン性水浴液中での吸収能を向」二することが
当該産業分野の大きな課題となっている。Under these circumstances, various types of superabsorbent polymers are currently being developed, such as starch-based, polyacrylate-based, modified polyvinyl alcohol-based, and cellulose-based polymers.
These polymers exhibit an Lfc absorption capacity of about 500 to 1,000 times their own weight for ion-exchanged water, but an absorption capacity of 50 to 60 for ionic aqueous solutions.
This is about twice as much, which is a significant drop. However, in real life, most of these absorbent polymers are used for ionic aqueous solutions such as body fluids, so their absorption capacity is insufficient, and their absorption capacity in ionic bath fluids is insufficient. ”2 has become a major issue in this industrial field.
本発明者らは、かかる技丙的3課題解決のため。The present inventors aimed to solve these three technical problems.
11”jに2体液に対してすぐれた吸収能を有するポリ
マーについて、鋭意検討の結果2体液に対する吸収能が
一存の高吸収性ポリマーよりも優れているポリマー組成
物を見出し2本発明を構成するに至った。As a result of extensive research into polymers that have excellent absorbency for body fluids, we have discovered a polymer composition that has superior absorbency to body fluids than other highly absorbent polymers, and the present invention is comprised of: I ended up doing it.
ずなわち木発すJIi、天然多糖類の混合ゲルから成る
高吸収性ポリマー組成物に関するものである□更に詳述
すれば、天然多糖類が各々、カラギーナンとローカスト
ビーンガム;カラギーナンとキサンタンガム:キサンタ
ンガムとコンニャクマンナンの組合せから成るゲル状ポ
リマー組成物が体液に対してすぐれた吸収能を有するこ
とをT、I←徴とするものである。Zunawa JIi, a superabsorbent polymer composition consisting of a mixed gel of natural polysaccharides.More specifically, the natural polysaccharides are carrageenan and locust bean gum; carrageenan and xanthan gum; The T, I← sign indicates that the gel-like polymer composition composed of the combination of konjac mannan has an excellent ability to absorb body fluids.
本発明によるポリマー組成物は、21+II類の天然多
糖類を別々に水に溶解し、混合・攪拌後冷却。In the polymer composition according to the present invention, natural polysaccharides of class 21+II are dissolved separately in water, mixed and stirred, and then cooled.
放1面する事によりゲル化物とし1次いで該ゲル化物に
イソプロピルアルコールを加えて、沈澱させ。A gelatinized product is obtained by allowing the mixture to stand for a while, and then isopropyl alcohol is added to the gelled product to precipitate it.
P別の後屹燥・粉砕する事により得ることが出来る。It can be obtained by drying and crushing P.
適用される天然多糖類の配合比は混合放1侑凌ゲル化物
を生成する範囲であれば良い。The blending ratio of the natural polysaccharides to be applied may be within a range that produces a mixed gelatinized product.
本発明の優れた特徴を列記すれば、捷ず第一に以上に述
べたように、製法の1m便性を挙げることが出来る。す
なわち、従来の吸収性ポリマーの製造工程には、グラフ
ト重合を含む共重合反応、架橋反応、鹸化反応、中和反
応等の化学反応を必要とするが9本発明によIしば、構
成成分ポリマーを水溶液中で混合攪拌し、必要により加
熱、冷却1′るのみで、所望の吸収能に浸れたポリマー
組成物を得ることが出来る。If we list the excellent features of the present invention, first and foremost, as mentioned above, we can mention the convenience of the manufacturing method by 1 meter. That is, the conventional production process for absorbent polymers requires chemical reactions such as copolymerization reactions including graft polymerization, crosslinking reactions, saponification reactions, and neutralization reactions, but according to the present invention, the constituent components A polymer composition with a desired absorption capacity can be obtained by simply mixing and stirring the polymer in an aqueous solution, heating and cooling if necessary.
次に2本発明のポリマー組成物は、既に食品添加物とし
て公認さt’している天然多糖類から成るものであるか
ら、従来の吸収性ポリマーのように。Second, since the polymer composition of the present invention is composed of natural polysaccharides that have already been approved as food additives, it is similar to conventional absorbent polymers.
残存モノマーや残存開始剤中の卸金属等による。Depends on residual monomers, metals in residual initiators, etc.
安全性に関する不゛なな要素は全く存在1−ない。There are no unusual factors regarding safety.
更に1本発り」のポリマー組成物は、使用後の廃、棄処
分の際極めて4N利である。すなわち、従来の吸収性ポ
リマーのゲルイ4造は、共イ1結合あるいは。Furthermore, the polymer composition that can be produced from just one product is very 4N efficient when discarded or disposed of after use. In other words, the conventional absorbent polymer has a four-structured gel-like structure, a co-yellow-one bond, or a double-bonded structure.
結晶濤造による強固な架橋構造奮仔するものであり、こ
れ全例えば、生理用品や紹、おむつ等に使用した場合に
は、使用後の廃棄の際、配管詰りを惹起する等の障害が
ある為に、水洗トイレに流すことが出来ず、このことが
、吸収性ポリマーを使用した製品の有用性が大きいにも
かかわらず、現実の利用可能性を低減せしめている大き
な理由の一つとなっている0
これに対して2本発明のポリマー+1itl成物のゲル
構造鉱、多糖類同士の主として水素結合による架橋構造
であるために、吸水後のゲルは、熱水中で容易にゲル状
物からゾル状物に転換したのち、大量の水と共に流し去
几ば、その後再びゲル化することなく、従来の吸収性ポ
リマーをyllいた場合の如き障害を起す心配はない。It has a strong cross-linked structure created by crystallization, and when used in sanitary products, diapers, diapers, etc., it can cause problems such as clogging pipes when disposed of after use. Therefore, they cannot be flushed down the flush toilet, and this is one of the major reasons why products using absorbent polymers are less likely to be used in real life, despite their great usefulness. On the other hand, since the gel structure of the polymer + 1itl composition of the present invention has a crosslinked structure mainly due to hydrogen bonds between polysaccharides, the gel after water absorption easily separates from the gel-like substance in hot water. After converting into a sol, if it is washed away with a large amount of water, it will not gel again and there is no need to worry about the problems that would occur when conventional absorbent polymers were used.
かかる優れた特徴を有する本発明の吸収性、J< Qマ
ーを用いることにより、吸収性ボ1】マーQ)産業上の
利用OT萌性を大いに向上せしめることが出来る。例え
ば、その高吸収性と高保水性を利用して。By using the absorbent J<Q mer of the present invention having such excellent characteristics, the OT exfoliability of the absorbent mer Q) for industrial use can be greatly improved. For example, taking advantage of its high absorbency and high water retention.
粉末状、繊維状又はシート状に成形して生理用品。Sanitary products made into powder, fiber or sheet form.
おむつ、7&園芸用1呆水剤等、多くの分野に1吏用出
来る。It can be used in many fields such as diapers, water drops for gardening, etc.
次に2本発明を実施例により説明する75X、これらは
例示的なものであって9本発明はこれに1)艮定される
ものではない。なお、実lK11例における吸叫又能C
r$ )は、下記の試験方法によすFF 1+l[i
Lだ。Next, the present invention will be explained with reference to Examples.75X These are illustrative, and the present invention is not limited to these. In addition, in 11 cases of actual lK,
r$) is FF 1+l[i
It's L.
すなわち、ポリマー(固形分(目)約(1,5fを精秤
(x f) L、、’ l !−の試験液−中に(貴拌
しな力;ら投入する。That is, approximately 1.5 f of the polymer (solid content) is poured into a test solution of precisely weighed (x f) L,,'l!- without stirring vigorously.
1時間攪拌後、7俸を1. OOメクシー金@’II上
に注により計算した。又、試験液として片いた人工尿は
、尿素1.94 % 、NaCl 0.8 % 、 M
gSO4・7H200,11qb、 CaCl20.0
6 % ’に含む水溶液である。After stirring for 1 hour, 1. Calculated by note on OO Mexie Gold@'II. In addition, the artificial urine taken as a test solution contained 1.94% urea, 0.8% NaCl, and M
gSO4・7H200,11qb, CaCl20.0
It is an aqueous solution containing 6%.
(各市ii−%) 実施例1−8及び比較例1〜2 攪拌機、温度計、確流冷却管を備えたモノくラフ。(Each city ii-%) Examples 1-8 and Comparative Examples 1-2 Monokurafu equipped with a stirrer, thermometer, and constant flow cooling tube.
ルフラスコ中に、あらかじめ別々に1!解した天然多糖
類の2重量%の水浴液を9等量仕込み、80℃で1時間
攪拌後水冷し、更に約5℃の冷蔵庫中に−夜装置して、
混合天然多糖類のゲル化物を得た。該ゲルイド
澱せしめ,濾過し,50〜60”Cで4・時間通風乾燥
後乳鉢で粉砕して,ゲル状粉末を得た。1 separately in advance in Le Flask! 9 equivalents of a 2% by weight water bath solution of the dissolved natural polysaccharide were added, stirred at 80°C for 1 hour, cooled with water, and then placed in a refrigerator at about 5°C overnight.
A gelled product of mixed natural polysaccharides was obtained. The geloid was precipitated, filtered, dried with ventilation at 50-60''C for 4 hours, and then ground in a mortar to obtain a gel-like powder.
得られたゲイレ粉末及び市販品について前述の試、験方
法により人工尿に×1する吸収能を411]定し第1表
に示した。The absorption capacity of the obtained Geire powder and the commercially available product was determined by the above-mentioned tests and test methods, and is shown in Table 1.
以上の結果かられかるように本発明のポリマー組成物は
.市販の吸収性ポリマーより吸収11ヒが著1、<優れ
ていた・
第1表As can be seen from the above results, the polymer composition of the present invention. Absorption of 11% was significantly better than commercially available absorbent polymers.Table 1
Claims (1)
して優れた吸収能をイイする高吸収性ポリマー組成物。 2、天然多’rm 却A合ゲルが、カラギーナンとロー
カストビーンガムからなるゲルである特許請求の範囲第
1項記載の高吸収性ポリマー組成物。 3 天然多糖゛頃混合ゲルが、カラギーナンとキサンタ
ンガムからなるゲルである特、i′F請求の範囲第]項
計!載の高吸収性ポリマー組成物・)4・ 入熱多糖類
混合ゲルが、キサンタンガムとコンニャクマンナンから
なるゲルである7t?許請求の範囲第1項記載の高吸収
性ポリマー組成物・[Claims] (1) Consisting of a natural polysaccharide mixed gel. A superabsorbent polymer composition with excellent absorption ability for ionic aqueous solutions. 2. The superabsorbent polymer composition according to claim 1, wherein the natural polyester gel is a gel consisting of carrageenan and locust bean gum. 3. The natural polysaccharide mixed gel is a gel consisting of carrageenan and xanthan gum. The superabsorbent polymer composition described in 7T? The superabsorbent polymer composition according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58165258A JPS6058443A (en) | 1983-09-09 | 1983-09-09 | High absorptive polymer composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58165258A JPS6058443A (en) | 1983-09-09 | 1983-09-09 | High absorptive polymer composition |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6058443A true JPS6058443A (en) | 1985-04-04 |
Family
ID=15808899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58165258A Pending JPS6058443A (en) | 1983-09-09 | 1983-09-09 | High absorptive polymer composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6058443A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0590395A1 (en) * | 1992-10-01 | 1994-04-06 | Hoechst Aktiengesellschaft | Absorption agent for water and aqueous solutions |
US5571764A (en) * | 1993-09-20 | 1996-11-05 | Cassella Aktiengesellschaft | Absorbent for water and aqueous solutions |
US5792855A (en) * | 1993-08-03 | 1998-08-11 | Nippon Shokubai Co., Ltd. | Water-absorbent resins and manufacturing methods thereof |
GB2363386A (en) * | 2000-06-16 | 2001-12-19 | Chesham Chemicals Ltd | New gel |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5449346A (en) * | 1977-09-24 | 1979-04-18 | Pasuko Intaanashiyonaru Kk | Sizing agent and producing same |
-
1983
- 1983-09-09 JP JP58165258A patent/JPS6058443A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5449346A (en) * | 1977-09-24 | 1979-04-18 | Pasuko Intaanashiyonaru Kk | Sizing agent and producing same |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0590395A1 (en) * | 1992-10-01 | 1994-04-06 | Hoechst Aktiengesellschaft | Absorption agent for water and aqueous solutions |
US5792855A (en) * | 1993-08-03 | 1998-08-11 | Nippon Shokubai Co., Ltd. | Water-absorbent resins and manufacturing methods thereof |
US5571764A (en) * | 1993-09-20 | 1996-11-05 | Cassella Aktiengesellschaft | Absorbent for water and aqueous solutions |
GB2363386A (en) * | 2000-06-16 | 2001-12-19 | Chesham Chemicals Ltd | New gel |
GB2363386B (en) * | 2000-06-16 | 2004-07-28 | Chesham Chemicals Ltd | Fluid gel comprising xanthan and non-gelling polysaccharides |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI277428B (en) | Superabsorbent polymer | |
JPH03176065A (en) | Absorbing agent | |
CN1239487A (en) | Absorbent compsn. | |
JPS61293228A (en) | Production of water-absorptive resin | |
WO2003090801A1 (en) | Polysaccharides compositions as biodegradable absorbent materials | |
GB1589975A (en) | Water absorbent polymers | |
ITTO940991A1 (en) | ABSORBENT MATERIAL, FOR EXAMPLE OF THE SUPER ABSORBENT TYPE, AND RELATED USE. | |
US5166231A (en) | Resin composition having biodegradability and high absorbency, nonwoven fabric made of the same and pads comprising said fabric | |
JPS62295962A (en) | Water swellable composition and its production | |
JP2708426B2 (en) | Manufacturing method of stabilized superabsorbent resin particles | |
JP2005097519A5 (en) | Water-absorbent resin composition, use thereof and production method thereof | |
JPH04501877A (en) | Manufacturing method of super absorbent resin | |
JPS60147475A (en) | Manufacture of water-absorptive resin | |
JP2901368B2 (en) | Method for producing salt-resistant water-absorbent resin | |
JPS6058443A (en) | High absorptive polymer composition | |
JP2848882B2 (en) | Manufacturing method of super absorbent resin | |
JPS60177004A (en) | Preparation of water-absorbing resin | |
JP5937066B2 (en) | Water-absorbing and liquid-absorbing polymers | |
JPH02135263A (en) | Water absorbing gel composition having excellent light resistance and heat resistance | |
JPS6195014A (en) | Water-absorbing material having improved salt water resistance | |
JP3168240B2 (en) | Thermosensitive absorption and drainage composition | |
US5210117A (en) | Resin composition having biodegradability and high absorbency, nonwoven fabric made of the same and pads comprising said fabric | |
JPS6081229A (en) | Production of water-swelling crosslinked polymer | |
JPH0841103A (en) | Production of water-absorbent cellulosic material | |
Buchholz | Preparation and structure of polyacrylates |