JP3121934B2 - Water-absorbing resin composition - Google Patents
Water-absorbing resin compositionInfo
- Publication number
- JP3121934B2 JP3121934B2 JP04280606A JP28060692A JP3121934B2 JP 3121934 B2 JP3121934 B2 JP 3121934B2 JP 04280606 A JP04280606 A JP 04280606A JP 28060692 A JP28060692 A JP 28060692A JP 3121934 B2 JP3121934 B2 JP 3121934B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- resin composition
- absorbent resin
- gel
- polyaluminum hydroxide
- 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.)
- Expired - Lifetime
Links
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- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は吸水性樹脂組成物に関す
る。さらに詳しくは、吸水能、保水能、ゲル強度および
ゲル安定性等の諸性能に優れた吸水性樹脂組成物に関す
る。The present invention relates to a water-absorbing resin composition. More specifically, the present invention relates to a water-absorbent resin composition excellent in various properties such as water-absorbing ability, water-holding ability, gel strength and gel stability.
【０００２】[0002]
【従来の技術】吸水性樹脂は、生理用品、おむつ、使い
捨て雑巾、保冷剤等の衛生用品や保水剤等の農園芸用品
として使用されているほか、汚泥の凝固剤、建材の結露
防止剤、油類の脱水剤等の用途にも用いられている。2. Description of the Related Art Water-absorbent resins are used as sanitary articles, sanitary articles such as diapers, disposable rags, cold insulators, and agricultural and horticultural articles such as water retention agents. It is also used for applications such as oil dehydrating agents.
【０００３】こうした吸水性樹脂としては、たとえば、
カルボキシメチルセルロース系架橋物、ポリオキシエチ
レン系架橋物、澱粉−アクリロニトリルグラフト系共重
合の加水分解物、澱粉−アクリル酸グラフト系共重合
体、アクリル酸塩系重合体架橋物、アクリル酸塩系共重
合体架橋物等の各種のものが知られている。これら吸水
性樹脂は、使用される用途によりその要求性能は若干異
なるものの、主に吸水能とゲル強度が重視される。特に
吸水性樹脂の用途の大部分を占める生理用品、おむつ等
では、その使用目的から大きな圧力下での高い吸水能が
要求される。すなわち、大きな圧力下でも高い吸水能を
示すためには、吸水能、保水能が高く、かつゲル強度が
大きくなければならない。[0003] As such a water-absorbing resin, for example,
Crosslinked carboxymethylcellulose, crosslinked polyoxyethylene, hydrolyzate of starch-acrylonitrile graft copolymer, starch-acrylic acid graft copolymer, crosslinked acrylate polymer, acrylate copolymer Various types, such as a crosslinked product, are known. Although the required performance of these water-absorbing resins is slightly different depending on the application in which they are used, emphasis is mainly placed on the water-absorbing ability and gel strength. In particular, sanitary articles, diapers, and the like, which occupy most of the uses of the water-absorbent resin, require a high water-absorbing ability under a large pressure for the purpose of use. That is, in order to exhibit high water absorption capacity even under a large pressure, the water absorption capacity and water retention capacity must be high, and the gel strength must be high.
【０００４】しかしながら、吸水能とゲル強度は、吸水
性樹脂の架橋密度と密接に関係した相反する性能である
ため、架橋密度を調整することにより吸水能とゲル強度
を調整しようとしても、使用目的に見合った性能を有す
る吸水性樹脂を得ることは困難であった。すなわち、架
橋密度を増加すればゲル強度は向上するが、その反面で
吸水能が低下し、一方、架橋密度を減少させれば吸水能
は向上するが、その反面でゲル強度が低下し、また架橋
密度を減少させるとゲル安定性においてもゲルの劣化が
促進されるという問題があった。[0004] However, since the water absorbing ability and the gel strength are inconsistent performances which are closely related to the crosslinking density of the water absorbing resin, even if the water absorbing ability and the gel strength are adjusted by adjusting the crosslinking density, the purpose of use is not improved. It was difficult to obtain a water-absorbing resin having a performance suitable for the above. That is, if the crosslink density is increased, the gel strength is improved, but on the other hand, the water absorption capacity is reduced, while if the crosslink density is reduced, the water absorption capacity is improved, but on the other hand, the gel strength is reduced, and When the crosslink density is reduced, there is a problem in that gel degradation is promoted also in gel stability.
【０００５】また、吸水性樹脂を硫酸アルミニウム等の
水溶性多価金属塩等により表面処理することにより、ブ
ロッキング現象を改良する方法が提案されている。しか
し、かかる手段によっても、吸水能を維持しながらゲル
強度を改良することは困難であった。[0005] Further, there has been proposed a method of improving the blocking phenomenon by subjecting a water-absorbent resin to a surface treatment with a water-soluble polyvalent metal salt such as aluminum sulfate or the like. However, it has been difficult to improve the gel strength while maintaining the water-absorbing ability also by such means.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、優れた吸水
能、保水能を維持しながら、かつゲル強度、ゲル安定性
にも優れた吸水性樹脂組成物を提供することを目的とす
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a water-absorbing resin composition which maintains excellent water-absorbing ability and water-holding ability, and is also excellent in gel strength and gel stability.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、前記従来
技術の課題を解決すべく、鋭意研究を重ねた結果、従来
公知の吸水性樹脂にポリ水酸化アルミニウムを配合した
場合には、吸水性樹脂の吸水能、保水能を低下させるこ
となく、かつゲル強度、ゲル安定性を向上させることが
できる、前記目的に合致した吸水性樹脂組成物が得られ
ることを見出だし、本発明を完成するに至った。Means for Solving the Problems The present inventors have conducted intensive studies in order to solve the above-mentioned problems of the prior art, and as a result, when polyaluminum hydroxide is blended with a conventionally known water-absorbing resin, It has been found that a water-absorbent resin composition that meets the above-mentioned purpose can be obtained without decreasing the water-absorbing ability of the water-absorbent resin, and without decreasing the water-holding ability, and capable of improving gel strength and gel stability. It was completed.
【０００８】すなわち、本発明は、吸水性樹脂およびポ
リ水酸化アルミニウムを含有してなる吸水性樹脂組成物
に関する。That is, the present invention relates to a water-absorbing resin composition containing a water-absorbing resin and polyaluminum hydroxide.
【０００９】本発明における吸水性樹脂とは水を樹脂内
部に吸水し、膨潤する高分子化合物の総称をいう。たと
えば、カルボキシメチルセルロース系架橋物、ポリオキ
シエチレン系架橋物、澱粉−アクリロニトリル系グラフ
ト共重合体の加水分解物、澱粉−アクリル酸グラフト系
共重合体の中和物、アクリル酸エステル−酢酸ビニル系
共重合体のケン化物、アクリロニトリル系共重合体の加
水分解物、アクリルアミド系共重合体の加水分解物、自
己架橋型ポリアクリル酸系中和物、アクリル酸塩系重合
体架橋物、アクリル酸塩系共重合体架橋物、架橋イソブ
チレン−無水マレイン酸系共重合体の中和物等があげら
れる。これら吸水性樹脂を製造する方法としては特に制
限されず、各種公知の手段を採用できる。また、これら
吸水性樹脂は架橋密度が均一のものでもよく、また吸水
性樹脂の表面が架橋処理されたものでもよい。なお、表
面架橋処理を施す手段としては公知の手段を採用すれば
よく、たとえば、多価金属塩、ポリエポキシ化合物、ポ
リアジリジニル化合物、ポリイソシアナート化合物等の
吸水性樹脂のカルボキシル基と容易に反応する化合物
を、水溶液として吸水性樹脂に噴霧する方法等があげら
れる。The water-absorbing resin in the present invention is a general term for a polymer compound which absorbs water into the resin and swells. For example, a carboxymethylcellulose-based crosslinked product, a polyoxyethylene-based crosslinked product, a starch-acrylonitrile-based graft copolymer hydrolyzate, a starch-acrylic acid-grafted copolymer neutralized product, an acrylate-vinyl acetate-based copolymer Saponified polymer, hydrolyzed acrylonitrile copolymer, hydrolyzed acrylamide copolymer, neutralized self-crosslinkable polyacrylic acid, crosslinked acrylate polymer, acrylate Crosslinked copolymers, neutralized crosslinked isobutylene-maleic anhydride copolymers and the like can be mentioned. The method for producing these water absorbent resins is not particularly limited, and various known means can be employed. These water-absorbent resins may have a uniform crosslinking density, or may have a surface of the water-absorbent resin subjected to a crosslinking treatment. In addition, what is necessary is just to employ | adopt well-known means as a means to perform a surface cross-linking process, For example, it reacts easily with the carboxyl group of the water absorbing resin, such as a polyvalent metal salt, a polyepoxy compound, a polyaziridinyl compound, and a polyisocyanate compound. A method in which the compound is sprayed onto the water-absorbent resin as an aqueous solution can be used.
【００１０】本発明で使用するポリ水酸化アルミニウム
としては、各種公知のものが、そのまま採用できる。た
とえば、一般式（１）：［Ａｌ（ＯＨ）3 ］n ・ＡｌＣ
ｌ3（式中、ｎは１０〜２１である）で表される化合物
があげられる。これらポリ水酸化アルミニウムの中でも
前記一般式において特にｎが１９〜２１程度のものが好
適である。かかるポリ水酸化アルミニウムの市販例とし
ては（商品名Ｐａｈｏ＃２，浅田化学工業株式会社
製）、（商品名Ｐａｈｏ＃３，浅田化学工業株式会社
製）等があげられる。As the polyaluminum hydroxide used in the present invention, various known ones can be used as they are. For example, general formula (1): [Al (OH) 3 ] n · AlC
and a compound represented by l 3 (where n is 10 to 21). Among these polyaluminum hydroxides, those having n of about 19 to 21 in the above general formula are particularly preferable. Commercially available examples of such polyaluminum hydroxide include (trade name Paho # 2, manufactured by Asada Chemical Industry Co., Ltd.) and (trade name Paho # 3, manufactured by Asada Chemical Industry Co., Ltd.).
【００１１】本発明において、ポリ水酸化アルミニウム
が吸水性樹脂にどのように作用しているかは定かではな
いが、硫酸アルミニウム等の多価金属塩等のように単に
吸水性樹脂を金属架橋しているのではなく、多くのヒド
ロキシ基を含む水酸化アルミニウムの多量体の特異な構
造が、吸水性樹脂と水素結合等のゆるやかな結合を形成
することにより、吸水能、保水能を低下させることな
く、ゲル強度、ゲル安定性を向上させることができたの
ではないかと考えられる。なお、ポリ水酸化アルミニウ
ムと類似した構造のポリ塩化アルミニウムでは、分子中
のヒドロキシ基の絶対数（通常３程度）がポリ水酸化ア
ルミニウムに比べて少ないため、吸水能、保水能を低下
させることなく、ゲル強度、ゲル安定性を十分に向上さ
せることができない。In the present invention, it is not clear how the polyaluminum hydroxide acts on the water-absorbing resin, but it is only possible to crosslink the water-absorbing resin with a metal such as a polyvalent metal salt such as aluminum sulfate. Rather, the unique structure of the aluminum hydroxide multimer containing many hydroxy groups forms a loose bond such as a hydrogen bond with the water-absorbent resin, without lowering the water-absorbing ability and water-holding ability. It is thought that the gel strength and gel stability could be improved. In addition, in polyaluminum chloride having a structure similar to that of polyaluminum hydroxide, the absolute number of hydroxy groups in the molecule (usually about 3) is smaller than that of polyaluminum hydroxide, so that the water absorption capacity and water retention capacity are not reduced. , Gel strength and gel stability cannot be sufficiently improved.
【００１２】また、本発明におけるポリ水酸化アルミニ
ウムの配合方法については、特に限定はされず、ポリ水
酸化アルミニウムを水溶液の状態でいつでも配合するこ
とができる。たとえば、吸水性樹脂の製造時（モノマー
を重合する際に、同時に配合してもよい）に配合してお
く方法、吸水性樹脂製造後の表面架橋処理時もしくは表
面架橋処理後に水溶液として添加もしくは噴霧する方
法、または吸水性樹脂を水に膨潤させる際に配合する方
法等のいずれの方法も採用できる。これら方法のなかで
も、ポリ水酸化アルミニウムが吸水性樹脂に特に有効に
作用すること、さらにはポリ水酸化アルミニウムを配合
し易いことから、前記方法のなかでも吸水性樹脂製造後
の表面架橋処理時もしくは表面架橋処理後にポリ水酸化
アルミニウムを配合するのがよい。なお、吸水性樹脂の
製造時（重合時）においてはポリ水酸化アルミニウムが
モノマーに不溶となる場合があるので、界面活性剤を用
いてエマルジョンの状態にしてから添加することが望ま
しい。The method for blending the polyaluminum hydroxide in the present invention is not particularly limited, and the polyaluminum hydroxide can be blended at any time in the form of an aqueous solution. For example, a method of blending at the time of producing a water-absorbent resin (may be simultaneously blended when polymerizing a monomer), a method of adding or spraying as an aqueous solution at the time of surface crosslinking treatment after producing a water-absorbent resin or after the surface crosslinking treatment Or a method in which the water-absorbent resin is blended when swelling in water. Among these methods, polyaluminum hydroxide particularly effectively acts on the water-absorbent resin, and furthermore, polyaluminum hydroxide is easily blended. Alternatively, it is preferable to mix polyaluminum hydroxide after the surface crosslinking treatment. During the production of the water-absorbent resin (at the time of polymerization), the polyaluminum hydroxide may be insoluble in the monomer. Therefore, it is desirable to add the emulsion after using a surfactant.
【００１３】ポリ水酸化アルミニウムの配合量は、吸水
性樹脂１００重量部に対して固形分で通常０．１〜２
０．０重量部程度、好ましくは１．０〜１０．０重量部
である。０．１重量部以下ではゲル強度、ゲル安定性の
改善が見られず、また２０．０重量部以上では吸水能が
低下するため好ましくない。The amount of the polyaluminum hydroxide is usually 0.1 to 2 in terms of solids based on 100 parts by weight of the water absorbent resin.
It is about 0.0 parts by weight, preferably 1.0 to 10.0 parts by weight. If the amount is less than 0.1 part by weight, no improvement in gel strength and gel stability is observed, and if it is more than 20.0 parts by weight, the water absorbing ability is undesirably reduced.
【００１４】なお、本発明の吸水性樹脂組成物は、ポリ
水酸化アルミニウム水溶液を含む含水ゲル状物をそのま
ま使用できる他、含水ゲルを乾燥して吸水性樹脂組成物
の粉末として使用することもできる。The water-absorbent resin composition of the present invention can be used as a hydrogel containing an aqueous solution of polyaluminum hydroxide as it is, or can be used as a powder of the water-absorbent resin composition by drying the hydrogel. it can.
【００１５】更に、本発明の吸水性樹脂組成物には、本
発明の効果を妨げない範囲内で、酸化剤、酸化防止剤、
還元剤、紫外線吸収剤、殺菌剤、防カビ剤、肥料、香
料、消臭剤等を水溶液に混合して使用してもよい。The water-absorbent resin composition of the present invention further comprises an oxidizing agent, an antioxidant, and the like within a range not to impair the effects of the present invention.
A reducing agent, an ultraviolet absorber, a bactericide, a fungicide, a fertilizer, a fragrance, a deodorant and the like may be mixed with the aqueous solution and used.
【００１６】[0016]
（１）本発明によれば、吸水能、保水能を高く維持した
ままで、ゲル強度、ゲル安定性が改良されてなる吸水性
樹脂組成物が提供される。(1) According to the present invention, there is provided a water-absorbent resin composition having improved gel strength and gel stability while maintaining high water-absorbing ability and water-holding ability.
【００１７】（２）したがって、本発明の吸水性樹脂組
成物によれば、架橋密度を調整することなく、適宜にポ
リ水酸化アルミニウムの使用量を調整して配合すること
で衛生用及び農園芸用等の各種用途での要求性能に応じ
た吸水能、保水能、ゲル強度、ゲル安定性を容易に実現
できる。(2) Therefore, according to the water-absorbent resin composition of the present invention, the amount of the polyaluminum hydroxide is appropriately adjusted and blended without adjusting the cross-linking density, so that it can be used for sanitary and agricultural and horticultural purposes. Water absorption capacity, water retention capacity, gel strength, and gel stability can be easily realized according to the required performance in various uses such as use.
【００１８】[0018]
【実施例】以下に実施例及び比較例をあげて本発明をさ
らに詳細に説明するが、本発明はこれら実施例に限定さ
れるものではない。EXAMPLES The present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to these examples.
【００１９】実施例１ ５００ｍｌのコルベンに表面架橋処理前の粉末状の吸水
性樹脂（ポリアクリル酸塩系架橋物）２００ｇを仕込
み、次いで撹拌しながら、ポリ水酸化アルミニウム（浅
田化学工業（株）製 Ｐａｈｏ＃３）０．６７ｇ（吸水
性樹脂に対して０．０５重量％）、水２８ｇ、および架
橋剤としてポリエチレングリコールジグリシジルエーテ
ル（共栄社油脂化学工業（株）製 商品名エポライト４
０Ｅ）０．４ｇからなる水溶液混合物を噴霧し、９５℃
まで昇温して、吸水性樹脂の表面架橋処理を行うと同時
に、ポリ水酸化アルミニウムを配合した。その後、１３
０℃で３０分間乾燥して本発明の吸水性樹脂組成物を得
た。得られた吸水性樹脂組成物を以下の性能評価に供し
た。結果は表１に示す。Example 1 200 g of a powdery water-absorbing resin (polyacrylate cross-linked product) before surface cross-linking treatment was charged into a 500-ml kolben, and then, with stirring, polyaluminum hydroxide (Asada Chemical Industry Co., Ltd.) Paho # 3) 0.67 g (0.05% by weight based on water-absorbent resin), water 28 g, and polyethylene glycol diglycidyl ether as a cross-linking agent (trade name Epolite 4 manufactured by Kyoeisha Yushi Kagaku Kogyo KK)
0E) Spray an aqueous solution mixture consisting of 0.4 g
The temperature was raised to perform a surface cross-linking treatment of the water-absorbing resin, and at the same time, polyaluminum hydroxide was blended. Then 13
After drying at 0 ° C. for 30 minutes, a water-absorbent resin composition of the present invention was obtained. The obtained water-absorbent resin composition was subjected to the following performance evaluations. The results are shown in Table 1.
【００２０】（性能評価） （１）生理食塩水吸水量 ２５０メッシュナイロンネット製ティーバッグに吸水性
樹脂組成物１．００ｇを正確にはかりとり、生理食塩水
に１時間浸漬させ、１５分水切り後、重量（ａ）を測定
した。また、吸水性樹脂組成物を入れないティーバッグ
を用いて同様の測定を行い重量（ｂ）を測定し、次式に
より生理食塩水吸水量を算出した。吸水量（ｇ／ｇ）＝
（（ａ）−（ｂ））／１．００(Evaluation of Performance) (1) Water Absorption of Physiological Saline 1.00 g of the water-absorbing resin composition was accurately weighed into a 250-mesh nylon net tea bag, immersed in physiological saline for 1 hour, and drained for 15 minutes. And weight (a) were measured. In addition, the same measurement was performed using a tea bag not containing the water-absorbent resin composition, the weight (b) was measured, and the physiological saline water absorption was calculated by the following equation. Water absorption (g / g) =
((A)-(b)) / 1.00
【００２１】（２）保水量 生理食塩水吸水量測定に、遠心脱水（１６７Ｇ）を１．
５分間行った後、重量（ｃ）を測定した。また、吸水性
樹脂組成物を入れないティーバッグを用いて同様の測定
を行い重量（ｄ）を測定し、次式により保水量を算出し
た。吸水量（ｇ／ｇ）＝（（ｃ）−（ｄ））／１．００(2) Water Retention A centrifugal dehydration (167G) was used for measuring the amount of physiological saline absorbed.
After 5 minutes, the weight (c) was measured. The same measurement was performed using a tea bag not containing the water-absorbent resin composition, the weight (d) was measured, and the water retention was calculated by the following equation. Water absorption (g / g) = ((c)-(d)) / 1.00
【００２２】（３）ゲル強度 ０．９％生理食塩水２５ｇ中に吸水性樹脂組成物１．０
０ｇを入れ２５倍ゲルを作成し、指触により以下の基準
で評価した。 ○−−−ゲルが強く、力を入れてもゲルがなかなか潰れ
ない。 △−−−ゲルは強いが、力を入れると、ゲルが潰れる。 ×−−−ゲルに弾性がなく、力を入れるとすぐに潰れ
る。(3) Gel Strength A water-absorbent resin composition 1.0 in 25 g of 0.9% physiological saline is used.
A 25-fold gel was prepared by adding 0 g, and evaluated by finger touch according to the following criteria. ○ ---- The gel is strong, and the gel does not easily collapse even if force is applied. Δ ---- The gel is strong, but when force is applied, the gel collapses. × --- The gel has no elasticity and collapses as soon as force is applied.
【００２３】（４）ゲル安定性 脱イオン水５００ｇ中に、吸水性樹脂組成物２．００ｇ
を入れ、ゲルを作成し、ゲルが形状を維持できる期間を
計った。 ○−−−５〜７日 △−−−３〜５日 ×−−−１〜３日(4) Gel stability In 500 g of deionized water, 2.00 g of the water-absorbing resin composition was used.
Was added to form a gel, and the period during which the gel could maintain its shape was measured. ○ −−− 5 to 7 days △ −−− 3 to 5 days × −−− 1 to 3 days
【００２４】実施例２〜５ 実施例１においてポリ水酸化アルミニウムの使用量を表
１に示したように代えた他は実施例１と同様にして本発
明の吸水性樹脂組成物を得た。得られた吸水性樹脂組成
物を実施例１と同様の性能評価に供した。結果は表１に
示す。Examples 2 to 5 A water-absorbent resin composition of the present invention was obtained in the same manner as in Example 1 except that the amount of polyaluminum hydroxide used was changed as shown in Table 1. The obtained water-absorbent resin composition was subjected to the same performance evaluation as in Example 1. The results are shown in Table 1.
【００２５】実施例６〜８ 実施例１においてポリ水酸化アルミニウムの使用量を表
１に示したように代え、架橋剤の使用量をポリエチレン
グリコールジグリシジルエーテル０．２５ｇに代えた他
は実施例１と同様にして本発明の吸水性樹脂組成物を得
た。得られた吸水性樹脂組成物を実施例１と同様の性能
評価に供した。結果は表１に示す。Examples 6 to 8 In Example 1, the amount of polyaluminum hydroxide used was changed as shown in Table 1, and the amount of the crosslinking agent was changed to 0.25 g of polyethylene glycol diglycidyl ether. In the same manner as in Example 1, a water-absorbent resin composition of the present invention was obtained. The obtained water-absorbent resin composition was subjected to the same performance evaluation as in Example 1. The results are shown in Table 1.
【００２６】比較例１ 実施例１においてポリ水酸化アルミニウムを配合しない
こと以外は実施例１と同様にして吸水性樹脂の表面架橋
処理を行った。得られた吸水性樹脂を実施例１と同様の
性能評価に供した。結果は表１に示す。Comparative Example 1 A surface crosslinking treatment of a water-absorbent resin was carried out in the same manner as in Example 1 except that no polyaluminum hydroxide was blended. The obtained water absorbent resin was subjected to the same performance evaluation as in Example 1. The results are shown in Table 1.
【００２７】比較例２ 実施例１においてポリ水酸化アルミニウムの代わりに硫
酸アルミニウムを用いた他は実施例１と同様にして吸水
性樹脂組成物を得た。得られた吸水性樹脂を実施例１と
同様の性能評価に供した。結果は表１に示す。Comparative Example 2 A water-absorbent resin composition was obtained in the same manner as in Example 1 except that aluminum sulfate was used instead of polyaluminum hydroxide. The obtained water absorbent resin was subjected to the same performance evaluation as in Example 1. The results are shown in Table 1.
【００２８】[0028]
【表１】 [Table 1]
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大山 洋司 大阪市鶴見区鶴見１丁目１番９号荒川化 学工業株式会社研究所内 (56)参考文献 特開 昭62−7745（ＪＰ，Ａ) 特開 昭60−177004（ＪＰ，Ａ) 特開 昭60−163956（ＪＰ，Ａ) 特開 平１−172457（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 1/00 - 101/16 C08K 3/00 - 13/08 ＣＡ（ＳＴＮ)──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoji Oyama 1-9-1, Tsurumi, Tsurumi-ku, Osaka-shi, Arakawa Chemical Industry Co., Ltd. (56) References JP-A-62-27745 (JP, A) JP-A-60-177004 (JP, A) JP-A-60-163956 (JP, A) JP-A-1-172457 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C08L 1 / 00-101/16 C08K 3/00-13/08 CA (STN)
Claims (3)
ムを含有してなる吸水性樹脂組成物。1. A water-absorbing resin composition comprising a water-absorbing resin and polyaluminum hydroxide.
酸化アルミニウムを固形分で０．１〜２０重量部となる
ように配合してなる請求項１記載の吸水性樹脂組成物。2. The water-absorbent resin composition according to claim 1, wherein polyaluminum hydroxide is blended at a solid content of 0.1 to 20 parts by weight with respect to 100 parts by weight of the water-absorbent resin.
（１）：［Ａｌ（ＯＨ）3］n ・ＡｌＣｌ3 （式中、ｎ
は１０〜２１である）で表される請求項１記載の吸水性
樹脂組成物。3. A method according to claim 1, wherein the polyaluminum hydroxide has a general formula (1): [Al (OH) 3 ] n · AlCl 3 (wherein n
Is 10 to 21). The water-absorbent resin composition according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04280606A JP3121934B2 (en) | 1992-09-25 | 1992-09-25 | Water-absorbing resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04280606A JP3121934B2 (en) | 1992-09-25 | 1992-09-25 | Water-absorbing resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06107846A JPH06107846A (en) | 1994-04-19 |
| JP3121934B2 true JP3121934B2 (en) | 2001-01-09 |
Family
ID=17627381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04280606A Expired - Lifetime JP3121934B2 (en) | 1992-09-25 | 1992-09-25 | Water-absorbing resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3121934B2 (en) |
Cited By (3)
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|---|---|---|---|---|
| WO2019197194A1 (en) | 2018-04-10 | 2019-10-17 | Basf Se | Permeable superabsorber and method for the production thereof |
| WO2021013639A1 (en) | 2019-07-24 | 2021-01-28 | Basf Se | Permeable superabsorbent and process for production thereof |
| US10960102B2 (en) | 2013-12-13 | 2021-03-30 | Lg Chem, Ltd. | Superabsorbent polymer composition |
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|---|---|---|---|---|
| SE511857C2 (en) * | 1998-04-28 | 1999-12-06 | Sca Hygiene Prod Ab | Absorbent structure with improved absorption properties containing at least 50% by weight superabsorbent material |
| DE19909838A1 (en) * | 1999-03-05 | 2000-09-07 | Stockhausen Chem Fab Gmbh | Powdery, crosslinked, aqueous liquids and blood-absorbing polymers, processes for their preparation and their use |
| DE19909653A1 (en) | 1999-03-05 | 2000-09-07 | Stockhausen Chem Fab Gmbh | Powdery, crosslinked, aqueous liquids and blood-absorbing polymers, processes for their preparation and their use |
| BRPI0411370B1 (en) | 2003-06-24 | 2018-04-10 | Nippon Shokubai Co., Ltd. | ABSORBENT WATER RESIN COMPOSITION, ABSORBENT, ABSORBENT ARTICLE, METHOD FOR PRODUCING A WATER ABSORBENT RESIN COMPOSITION |
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| TWI394789B (en) | 2005-12-22 | 2013-05-01 | Nippon Catalytic Chem Ind | Water-absorbent resin composition, method of manufacturing the same, and absorbent article |
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1992
- 1992-09-25 JP JP04280606A patent/JP3121934B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10960102B2 (en) | 2013-12-13 | 2021-03-30 | Lg Chem, Ltd. | Superabsorbent polymer composition |
| WO2019197194A1 (en) | 2018-04-10 | 2019-10-17 | Basf Se | Permeable superabsorber and method for the production thereof |
| US11986798B2 (en) | 2018-04-10 | 2024-05-21 | Basf Se | Permeable superabsorbent and process for production thereof |
| WO2021013639A1 (en) | 2019-07-24 | 2021-01-28 | Basf Se | Permeable superabsorbent and process for production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06107846A (en) | 1994-04-19 |
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