JPH093237A - Production of porous article having open cell - Google Patents
Production of porous article having open cellInfo
- Publication number
- JPH093237A JPH093237A JP18317095A JP18317095A JPH093237A JP H093237 A JPH093237 A JP H093237A JP 18317095 A JP18317095 A JP 18317095A JP 18317095 A JP18317095 A JP 18317095A JP H093237 A JPH093237 A JP H093237A
- Authority
- JP
- Japan
- Prior art keywords
- water
- weight
- parts
- high frequency
- heating
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 150000003839 salts Chemical class 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 3
- 239000011148 porous material Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 7
- 239000004800 polyvinyl chloride Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 abstract description 7
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 abstract description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000011780 sodium chloride Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000002745 absorbent Effects 0.000 description 8
- 239000002250 absorbent Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【産業上の利用分野】本発明は熱可塑性樹脂よりなる吸
水性に優れた連続気孔式多孔質体を高い熱効率で製造す
る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a continuous pore type porous body made of a thermoplastic resin and excellent in water absorption with high thermal efficiency.
【従来の技術と課題】従来、多数の微細な連続気孔を有
する高分子多孔質体の製造法として、樹脂に塩化ナトリ
ウムなどの水溶性塩類（特開昭５６−５０９３６）や尿
素（特開昭６３−４６２３９）などの溶出可能な物質を
混合し、成形後にその物質を溶媒抽出する方法が知られ
ている。このようにして製造された多孔質体は吸水ロー
ラーや多孔性印材用素材など多くの用途に応用されてい
るが、その吸水性能の更なる改善や生産能率の向上が望
まれていた。本発明者は鋭意研究の結果、高周波加熱又
は高周波誘導加熱を用いることにより、驚くべき吸水性
能を示し、かつ、極めて緻密で均一な連続気孔を有する
多孔質体を高い熱効率で、効率よく製造できることを見
いだし本発明に到達した。2. Description of the Related Art Conventionally, as a method for producing a polymer porous body having a large number of fine continuous pores, a water-soluble salt such as sodium chloride (JP-A-56-50936) or urea (JP-A-56-50936) is used as a resin. 63-46239) and other substances capable of eluting, and a method of extracting the substance by solvent after molding is known. The porous body produced in this manner is applied to many uses such as a water-absorbing roller and a material for a porous stamp material, and further improvement of its water-absorbing performance and production efficiency have been desired. As a result of earnest research, the present inventor has shown that, by using high frequency heating or high frequency induction heating, it is possible to efficiently produce a porous body having surprising water absorption performance and having extremely dense and uniform continuous pores with high thermal efficiency. They have found the present invention and reached the present invention.
【課題を解決するための手段】すなわち、本発明は熱可
塑性樹脂と水溶性塩類を混合して型に充填し、高周波加
熱又は高周波誘導加熱により加熱成形後、成形体から水
溶性塩類を溶出させる連続気孔式多孔質体の製造法であ
る。本発明に用いられる熱可塑性樹脂には、一般に使用
さている各種の樹脂を用いることができる。例えばポリ
塩化ビニル、ポリビニルアルコール、ポリエチレン、ポ
リスチレン、ポリエステル、ポリ酢酸ビニル、酢酸セル
ロース等を挙げることができるが、特にポリ塩化ビニル
の使用が好ましい。また、水溶性塩類としては、塩化ナ
トリウム、硫酸ナトリウム等各種の水溶性塩類が使用で
きる。熱可塑性樹脂１００重量部に対する水溶性塩類の
配合量は、３００〜１０００重量部、好ましくは５００
〜８００重量部である。水溶性塩類の配合量が３００重
量部より少ないと十分な連続気孔が得られず、その吸水
性能が低い。逆に水溶性塩類の配合量が１０００重量部
を越えると、得られる多孔質体の強度が弱くなり実用性
が低くなる。本発明の製造法では、まず熱可塑性樹脂に
所定比率の水溶性塩類の粉末を配合し、更に必要に応じ
て可塑剤その他の添加剤を加えよく混合する。次にこの
混合可塑物を高周波を透過する素材で作られた型に入
れ、高周波加熱により加熱成形する。高周波を透過する
素材としては、テフロン、シリコン樹脂、フェノール、
メラミン、ユリア、エポキシ、ポリエステル、ジアリル
フタレート等のプラスチック、ゴム、エボナイト、強化
木、更にガラス、セラミック等の無機物が挙げられる。
型は吸水ローラー、印材用など用途に応じて箱状、管
状、その他種々の形状のものを使用することができる。
高周波加熱は、高周波を透過する素材で作られた型に入
れた混合可塑物を電極間に入れ、その電極間に４０〜８
０メガヘルツ以上の高周波を印加することによって行
う。この際混合可塑物が圧抜け穴より吹き出さないよう
な温度に管理する必要がある。高周波誘導加熱は、高周
波磁場内に磁性体又は誘導体を置き、ヒステリシス損と
うず電流によるジュール熱によって極めて短時間に発熱
を起こす方法である。この発熱方法によれば上述の素材
以外に金属の加熱も可能であり、型の材質に金属を選ぶ
ことができ、極めて高い熱効率の得られる利点がある。
高周波加熱又は高周波誘導加熱により加熱成形した後
は、通常の方法に従い冷却し、水で水溶性塩を溶出させ
た後、乾燥させて多孔質体を得る。次に本発明を実施例
に従って更に詳しく説明する。[Means for Solving the Problems] That is, according to the present invention, a thermoplastic resin and water-soluble salts are mixed and filled in a mold, and after hot molding by high-frequency heating or high-frequency induction heating, the water-soluble salts are eluted from the molded body. This is a method for producing a continuous pore type porous body. As the thermoplastic resin used in the present invention, various commonly used resins can be used. For example, polyvinyl chloride, polyvinyl alcohol, polyethylene, polystyrene, polyester, polyvinyl acetate, cellulose acetate and the like can be mentioned, but the use of polyvinyl chloride is particularly preferable. As the water-soluble salts, various water-soluble salts such as sodium chloride and sodium sulfate can be used. The blending amount of the water-soluble salt with respect to 100 parts by weight of the thermoplastic resin is 300 to 1000 parts by weight, preferably 500.
~ 800 parts by weight. If the content of the water-soluble salt is less than 300 parts by weight, sufficient continuous pores cannot be obtained and the water absorption performance is low. On the other hand, if the amount of the water-soluble salt compounded exceeds 1000 parts by weight, the strength of the resulting porous body will be weakened and the practicality will be reduced. In the production method of the present invention, first, a powder of a water-soluble salt in a predetermined ratio is blended with a thermoplastic resin, and if necessary, a plasticizer and other additives are added and mixed well. Next, this mixed plastic is placed in a mold made of a material that transmits high frequencies, and heat-molded by high-frequency heating. Materials that transmit high frequencies include Teflon, silicone resin, phenol,
Examples include plastics such as melamine, urea, epoxy, polyester, diallyl phthalate, rubber, ebonite, reinforced wood, and inorganic substances such as glass and ceramics.
The mold may be a water-absorbing roller, a stamp, a box, a tube, or other various shapes depending on the application.
In high frequency heating, a mixed plastic compound, which is placed in a mold made of a material that transmits high frequencies, is put between the electrodes, and 40 to 8
It is performed by applying a high frequency of 0 MHz or more. At this time, it is necessary to control the temperature so that the mixed plastic does not blow out from the pressure relief hole. High frequency induction heating is a method of placing a magnetic material or a derivative in a high frequency magnetic field and causing heat generation in an extremely short time by Joule heat due to hysteresis loss and eddy current. According to this heat generation method, it is possible to heat a metal other than the above-mentioned materials, and a metal can be selected as the material of the mold, and there is an advantage that extremely high thermal efficiency can be obtained.
After hot-molding by high-frequency heating or high-frequency induction heating, cooling is performed according to a usual method, the water-soluble salt is eluted with water, and then dried to obtain a porous body. Next, the present invention will be described in more detail with reference to Examples.
実施例１ ポリ塩化ビニル粉末３００重量部、食塩２０００重量
部、ホワイトカーボン６０重量部、ジオクチルフタレー
ト（ＤＯＰ）２６０重量部、ポリエチレングリコール１
６０重量部、シクロヘキサン５０重量部を混合し、均一
になるようロールでよく練り合わせる。出来上がったペ
ーストをセラミック製の円筒状容器に詰め、高周波プレ
ヒーター（精電舎電子工業（株）製、発振周波数 ６０
ＭＨｚ、高周波出力 １ＫＷ）に入れ、１８０秒加熱す
る。固化物を容器のまま水中に投じて冷却し、内部の白
色可塑物を取り出し、水中に浸漬して食塩が溶出し、浮
上するまで放置する。浮上した可塑物を別の水を入れた
容器中で何度も強く圧搾し塩出しを行う。塩分の抜けき
った多孔質体を乾燥し、円筒状の吸水体を得た。得られ
た吸水体は、通常の加熱成形方法で製造した吸水体に比
し緻密な連続気孔を有し、吸水試験の結果は表１のごと
く、水滴の吸水に要する時間１秒の優れた吸水性能を示
した。 実施例２ ポリ塩化ビニル粉末３００重量部、食塩２０００重量
部、ホワイトカーボン６０重量部、ジオクチルフタレー
ト（ＤＯＰ）２６０重量部、ポリエチレングリコール１
６０重量部、シクロヘキサン５０重量部を混合し、均一
になるようロールでよく練り合わせる。出来上がったペ
ーストをテフロン製の管状（内径２０ｍ／ｍ、長さ６０
ｍ／ｍ、厚さ５ｍ／ｍ）の型に詰め、電磁誘導加熱装置
（精電舎電子工業（株）製）にセットする。加熱装置の
陽極電圧をタップ１、陽極電流を開始時２４０ｍＡ、終
了時２００ｍＡ、発信時間４秒、停止時間２０秒の加熱
条件において、２５回転／毎分で回転させながら１０分
間電極内で加熱を行った。加熱後型に充填したまま水中
に投じて冷却後、内容物を取り出した。内容物を水中に
浸漬して食塩が溶出し、浮上するまで長時間静置する。
浮上した内容物を別の水槽に移し、何度も強く圧搾し塩
出しを行う。塩分の抜けきった多孔質体を乾燥し、円筒
状の吸水体を得た。得られた吸水体は、通常の加熱成形
方法で製造した吸水体に比し緻密な連続気孔を有し、吸
水試験の結果は表１のごとく、水滴の吸水に要する時間
１秒の優れた吸水性能を示した。 比較例１ ポリ塩化ビニル粉末３００重量部、食塩２０００重量
部、ホワイトカーボン６０重量部、ジオクチルフタレー
ト（ＤＯＰ）２６０重量部、ポリエチレングリコール１
６０重量部、シクロヘキサン５０重量部を混合し、均一
になるようロールでよく練り合わせる。出来上がったペ
ーストを金属製の管状の型に詰め、電熱加熱装置で６０
℃、２０分加熱した。加熱後、型に充填したまま水中に
投じて冷却した後内容物を取り出した。内容物を水中に
浸漬し、食塩が溶出して浮上するまで長時間静置する。
浮上した内容物を別の水槽に移し、何度も強く圧搾し塩
出しを行う。塩分の抜けきった多孔質体を乾燥し、円筒
状の吸水体を得た。得られた吸水体の吸水試験の結果は
表１のごとく、水滴の吸水に要する時間１０秒の低い吸
水性能であった。Example 1 Polyvinyl chloride powder 300 parts by weight, salt 2000 parts by weight, white carbon 60 parts by weight, dioctyl phthalate (DOP) 260 parts by weight, polyethylene glycol 1
60 parts by weight and 50 parts by weight of cyclohexane are mixed and well kneaded with a roll so as to be uniform. The resulting paste was packed in a ceramic cylindrical container, and a high-frequency preheater (manufactured by Seidensha Electronics Co., Ltd., oscillation frequency 60
MHz, high frequency output 1 kW) and heat for 180 seconds. The solidified product is poured into water as it is in a container to be cooled, the white plastic material inside is taken out, and immersed in water to dissolve the salt, and it is left until it floats. The floated plastics are squeezed and squeezed repeatedly in another container containing water. The porous body from which the salt was completely removed was dried to obtain a cylindrical water absorbent body. The obtained water absorbent body has dense continuous pores as compared with the water absorbent body manufactured by the usual heat molding method, and the result of the water absorption test is as shown in Table 1, and the excellent water absorption time of 1 second required for absorbing water droplets is shown in Table 1. The performance was shown. Example 2 Polyvinyl chloride powder 300 parts by weight, salt 2000 parts by weight, white carbon 60 parts by weight, dioctyl phthalate (DOP) 260 parts by weight, polyethylene glycol 1
60 parts by weight and 50 parts by weight of cyclohexane are mixed and well kneaded with a roll so as to be uniform. The resulting paste is a Teflon tube (inner diameter 20 m / m, length 60
m / m, thickness 5 m / m), and set in an electromagnetic induction heating device (manufactured by Seidensha Denshi Kogyo Co., Ltd.). Under the heating conditions of tap 1 of the anode voltage of the heating device, anode current of 240 mA at the start, 200 mA at the end, oscillation time of 4 seconds, stop time of 20 seconds, heating in the electrode for 10 minutes while rotating at 25 rpm. went. After heating, the contents were taken out after being poured into water while being filled in the mold and cooled. Dip the contents in water and let stand for a long time until the salt elutes and floats.
The floated contents are transferred to another water tank and squeezed repeatedly to salt out. The porous body from which the salt was completely removed was dried to obtain a cylindrical water absorbent body. The obtained water absorbent body has dense continuous pores as compared with the water absorbent body manufactured by the usual heat molding method, and the result of the water absorption test is as shown in Table 1, and the excellent water absorption time of 1 second required for absorbing water droplets is shown in Table 1. The performance was shown. Comparative Example 1 Polyvinyl chloride powder 300 parts by weight, salt 2000 parts by weight, white carbon 60 parts by weight, dioctyl phthalate (DOP) 260 parts by weight, polyethylene glycol 1
60 parts by weight and 50 parts by weight of cyclohexane are mixed and well kneaded with a roll so as to be uniform. The finished paste is packed in a metal tubular mold and heated with an electric heating device to 60
Heated at 0 ° C for 20 minutes. After heating, the contents were taken out after being poured into water while being filled in the mold to be cooled. Soak the contents in water and let stand for a long time until the salt elutes and floats.
The floated contents are transferred to another water tank and squeezed repeatedly to salt out. The porous body from which the salt was completely removed was dried to obtain a cylindrical water absorbent body. The results of the water absorption test of the obtained water absorbent body are shown in Table 1, which shows a low water absorption performance of 10 seconds required for absorbing water droplets.
【表１】 [Table 1]
【発明の効果】本発明によれば、熱可塑性樹脂と水溶性
塩類の混合物を高周波加熱又は高周波誘導加熱を用いて
成形することにより、製造時間を短縮し、高い熱効率
で、緻密で均一な連続気孔を有する極めて吸水性能の優
れたた多孔質体を製造することができる。このようにし
て製造された多孔質体は吸水ローラーや多孔性印材用素
材その他広い分野に応用できる。According to the present invention, by molding a mixture of a thermoplastic resin and a water-soluble salt using high frequency heating or high frequency induction heating, the manufacturing time is shortened, high thermal efficiency is achieved, and a dense and uniform continuous process is achieved. It is possible to manufacture a porous body having pores and excellent in water absorption performance. The porous body produced in this manner can be applied to a wide range of fields such as a water-absorbing roller, a porous stamp material and the like.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年１２月１５日[Submission date] December 15, 1995
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の名称[Correction target item name] Name of invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【発明の名称】 連続気孔式多孔質体の製造法Title: Method for producing continuous pore type porous body
Claims (3)
に充填し、高周波加熱又は高周波誘導加熱により加熱成
形後、成形体から水溶性塩類を溶出させる連続気孔式多
孔質体の製造法。1. A method for producing a continuous pore type porous body in which a thermoplastic resin and a water-soluble salt are mixed and filled in a mold, and after hot molding by high frequency heating or high frequency induction heating, the water-soluble salt is eluted from the molded body. .
る請求項１記載の連続気孔式多孔質体の製造法。2. The method for producing a continuous pore type porous body according to claim 1, wherein the thermoplastic resin is a polyvinyl chloride resin.
剤６０〜９０重量部と水溶性塩類５００〜８００重量部
とを含有する可塑物を型に充填し、高周波加熱又は高周
波誘導加熱により加熱成形後、水にて成形体から水溶性
塩類を溶出させる連続気孔式多孔質体の製造法。3. A mold is filled with a plastic material containing 100 parts by weight of a polyvinyl chloride resin, 60 to 90 parts by weight of a plasticizer, and 500 to 800 parts by weight of a water-soluble salt, and heat-molded by high frequency heating or high frequency induction heating. Then, a method for producing a continuous pore type porous body in which water-soluble salts are eluted from the molded body with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18317095A JPH093237A (en) | 1995-06-16 | 1995-06-16 | Production of porous article having open cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18317095A JPH093237A (en) | 1995-06-16 | 1995-06-16 | Production of porous article having open cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH093237A true JPH093237A (en) | 1997-01-07 |
Family
ID=16131014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18317095A Pending JPH093237A (en) | 1995-06-16 | 1995-06-16 | Production of porous article having open cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH093237A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008038120A (en) * | 2006-08-03 | 2008-02-21 | Ic Kogyo Kk | Highly water-absorbing porous body |
-
1995
- 1995-06-16 JP JP18317095A patent/JPH093237A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008038120A (en) * | 2006-08-03 | 2008-02-21 | Ic Kogyo Kk | Highly water-absorbing porous body |
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