JPH01182362A - Water-absorptive coating composition - Google Patents
Water-absorptive coating compositionInfo
- Publication number
- JPH01182362A JPH01182362A JP263288A JP263288A JPH01182362A JP H01182362 A JPH01182362 A JP H01182362A JP 263288 A JP263288 A JP 263288A JP 263288 A JP263288 A JP 263288A JP H01182362 A JPH01182362 A JP H01182362A
- Authority
- JP
- Japan
- Prior art keywords
- water
- polyethylene oxide
- resin
- resin powder
- coating composition
- 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
- 239000008199 coating composition Substances 0.000 title claims description 7
- 239000011347 resin Substances 0.000 claims abstract description 41
- 229920005989 resin Polymers 0.000 claims abstract description 41
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000003960 organic solvent Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000002250 absorbent Substances 0.000 claims description 17
- 230000002745 absorbent Effects 0.000 claims description 13
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 239000004745 nonwoven fabric Substances 0.000 abstract description 4
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 abstract description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 13
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 5
- 229920002125 Sokalan® Polymers 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 239000004584 polyacrylic acid Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- -1 tetrahydro7ran Chemical compound 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は高度の吸水能を有するコーティング組成物に関
するもので、吸水性の付与された紙、不織布等の吸水材
料を提供する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a coating composition having a high water-absorbing ability, and provides water-absorbing materials such as paper and nonwoven fabrics endowed with water-absorbing properties.
従来の技術
高吸水性樹脂には種々のタイプの製品が知られ、架橋ポ
リアクリル酸、デンプン−ポリアクリル酸クラフト共重
合体、デンプン−ポリアクリロニトリルグラフト共重合
体、加水分解物、インプチレ／−無水マレイン酸共重合
体などがあげられる。これらの樹脂は通常自重の１００
倍以上の吸水能を有する。Conventional technology Various types of super absorbent resin products are known, including cross-linked polyacrylic acid, starch-polyacrylic acid kraft copolymer, starch-polyacrylonitrile graft copolymer, hydrolyzate, imptile/anhydrous. Examples include maleic acid copolymers. These resins usually weigh 100% of their own weight.
It has more than twice the water absorption capacity.
高吸水性樹脂粉末を紙、不織などの基材に散布してなる
吸水材が知られる。樹脂粉末を基材に固定させるために
スチーミングにより樹脂を膨潤させた後、プレス乾燥す
る方法がとられる。Water-absorbing materials are known that are made by dispersing super-absorbent resin powder onto a base material such as paper or non-woven material. In order to fix the resin powder to the base material, a method is used in which the resin is swollen by steaming and then press-dried.
高吸水性樹脂粉末を含むコーティング剤およびコーティ
ング方法についての例もみられる。特開昭５９−６６４
６６は、高吸水性樹脂、水不溶可撓性樹脂および有機溶
剤からなる水遮蔽用塗料組成物、特開昭６Ｇ−２４０７
７５は、塗料ベースとしてのゴム系バインダーに高吸水
性樹脂を配合してなる防汚塗料を開示している。また高
吸水性樹脂を分散させたヒト°ロキシプロビルセルロー
スのアルコール溶液を平面上に流延させる吸水性フィル
ムの製法（特開昭６Ｏ−２１７２４１）もある。Examples of coating agents and coating methods containing superabsorbent resin powders are also found. Japanese Patent Publication No. 59-664
66 is a water-shielding coating composition comprising a super absorbent resin, a water-insoluble flexible resin, and an organic solvent, JP-A-6G-2407
No. 75 discloses an antifouling paint made by blending a highly water-absorbing resin with a rubber binder as a paint base. There is also a method for producing a water absorbent film (Japanese Patent Laid-Open No. 6O-217241) in which an alcohol solution of human roxypropyl cellulose in which a super absorbent resin is dispersed is cast on a flat surface.
発明が解決しようとする問題点
高吸水性樹脂粉末を基材に散布する方法では、均一性お
よび樹脂と基材との結合が不充分で、樹脂の脱落などの
困難が生ずる。またスチーミングとプレスによる固定の
場合も、軽度の吸水で樹脂が基材から遊離する。Problems to be Solved by the Invention In the method of dispersing superabsorbent resin powder onto a substrate, uniformity and bonding between the resin and the substrate are insufficient, resulting in difficulties such as resin falling off. Also, in the case of fixation by steaming and pressing, the resin is released from the base material due to slight water absorption.
そうした困難を除（方法として、樹脂粉末をバインダー
に分散させた塗料化がある。One way to overcome these difficulties is to create a coating by dispersing resin powder in a binder.
吸水膨潤した塗膜自体に機械的強度が要求される場合、
ゴムなどの水不溶性柔軟ポリマーが用いられる。この場
合、樹脂の吸水能、特に吸水速度の著しい制約が避けら
れない。一方、水溶性バインダーを用いる場合、該樹脂
の性質から水系溶剤が使用できないので、バインダー樹
脂と溶剤は極めて限定される。When mechanical strength is required for the water-swollen coating film itself,
Water-insoluble flexible polymers such as rubber are used. In this case, significant restrictions on the water absorption capacity of the resin, particularly on the water absorption rate, are unavoidable. On the other hand, when using a water-soluble binder, a water-based solvent cannot be used due to the nature of the resin, so the binder resin and solvent are extremely limited.
高度の吸水性を有する紙、不織布などの製品を設計する
場合、高吸水性樹脂を含む塗膜は、吸水時にある程度の
形状安定性の保持および樹脂本来の吸水速度と吸水能が
妨げられないことが求められる。When designing products such as paper and non-woven fabrics that have a high degree of water absorption, it is important that coatings containing highly water-absorbent resins maintain a certain degree of shape stability when water is absorbed and that the resin's inherent water absorption speed and ability are not hindered. is required.
問題点を解決するための手段と作用効果本発明は、高吸
水性樹脂粉末をポリエチレンオキサイドの有機溶剤溶液
に分散させてなる吸水性コーティング組成物を提供する
。Means and Effects for Solving the Problems The present invention provides a water-absorbing coating composition in which super-absorbent resin powder is dispersed in an organic solvent solution of polyethylene oxide.
ポリエチレンオキサイド°は、水溶性であると同時に多
（の汎用有機溶剤に可溶な熱可塑性ポリマーであり、プ
ロピレンオキサイ、ド、ブチレンオキサイドの共重合体
も含まれる。広範囲の分子量の多くの市販製品がみられ
、平均分子！１０万〜５００万の製品が本発明に好適に
用いられる。溶剤として、アセトニトリル、ジクロルエ
タン、テトラヒドロ７ラン、ベンゼン、メタノール、酢
酸メチル、ジオキサン、四塩化炭素、酢酸エチル、アセ
トン、エタノール、メチルエチルケトンなどがあげられ
る。Polyethylene oxide is a thermoplastic polymer that is water-soluble as well as soluble in many common organic solvents, including copolymers of propylene oxide, polyethylene oxide, and butylene oxide. Products with an average molecular weight of 100,000 to 5,000,000 are preferably used in the present invention.Solvents include acetonitrile, dichloroethane, tetrahydro7ran, benzene, methanol, methyl acetate, dioxane, carbon tetrachloride, ethyl acetate. , acetone, ethanol, methyl ethyl ketone, etc.
分子量１０万以上のポリエチレンオキサイド（ＰＥＯ）
皮膜は吸水してゲル状を呈するが、べとつき感がなく、
高吸水性樹脂と同様な挙勢が注目される。ＰＥＯはポリ
アクリル酸と会合体を形成し、部分的にアルカリ金属塩
に中和されたポリアクリル酸とも親和性が大きいと考え
られる。Polyethylene oxide (PEO) with a molecular weight of 100,000 or more
The film absorbs water and takes on a gel-like appearance, but it does not feel sticky.
The behavior similar to that of super absorbent resins is noteworthy. PEO forms an aggregate with polyacrylic acid and is considered to have a high affinity with polyacrylic acid that has been partially neutralized with an alkali metal salt.
ＰＥＯをバインダーとする高吸水性樹脂粉末皮膜の吸水
時の挙動を観察して次の顕著なる事実が見出された。Ｐ
ＥＯ連続相は粉末樹脂と同時に膨潤ゲル化し、水は主と
して粉末樹脂に吸収される。The following remarkable facts were discovered by observing the behavior of a super absorbent resin powder film containing PEO as a binder upon water absorption. P
The EO continuous phase swells and gels simultaneously with the powdered resin, and water is primarily absorbed by the powdered resin.
ＰＥＯの溶解は粉末樹脂が充分膨潤するまで殆ど生じな
い。膨潤被膜は形状安定性を保持し、べとつき感がない
。皮膜は高吸水性樹脂本来の高い吸水速度と吸水能を示
すことが見出された。Little dissolution of PEO occurs until the powdered resin is sufficiently swollen. The swelling film maintains shape stability and does not feel sticky. It was found that the film exhibits the high water absorption rate and water absorption ability inherent to super absorbent resins.
本発明の組成物の分散安定性は樹脂粉末の粒度と溶液粘
度に依存する。溶液粘度はＰＥＯの分子量と濃度による
。粒度は１００μｍ以下の微粒子が分散安定性および塗
膜の平滑性の点で好ましい。粒度１０μｍ以下になると
樹脂の吸水性能が損なわれることも留意きるべきである
。高分子量のＰＥＯを用いることにより、１％以下の低
濃度でも塗工に適当な粘度が得られる。従って、高吸水
性樹脂／ＰＥＯの組成比は自由に調節することができる
。The dispersion stability of the composition of the present invention depends on the particle size of the resin powder and the solution viscosity. Solution viscosity depends on the molecular weight and concentration of PEO. Fine particles with a particle size of 100 μm or less are preferred from the viewpoint of dispersion stability and coating film smoothness. It should also be noted that if the particle size is less than 10 μm, the water absorption performance of the resin will be impaired. By using high molecular weight PEO, a suitable viscosity for coating can be obtained even at a low concentration of 1% or less. Therefore, the composition ratio of super absorbent resin/PEO can be adjusted freely.
通常ＰＥＯは樹脂粉末１００部に対して０．５〜２０部
の割合で用いて好適な結果が得られる。Usually, PEO is used in a proportion of 0.5 to 20 parts per 100 parts of resin powder to obtain suitable results.
本発明の組成物を平板に流延し、溶剤を揮発させて、吸
水性ジイルムをつくることも可能で、その場合、樹脂粉
末１００部に対し、ＰＥＯは１０〜３０部の割合が適当
である。It is also possible to make a water-absorbing diilm by casting the composition of the present invention on a flat plate and volatilizing the solvent. In that case, the appropriate ratio of PEO to 100 parts of resin powder is 10 to 30 parts. .
ＰＥＯは通常粉末の形で市販され、前記有機溶剤に溶解
される。高吸水性樹脂粉末が溶液に加えられ、均一に混
合分散される。PEO is usually commercially available in powder form and dissolved in the organic solvent. Super absorbent resin powder is added to the solution and uniformly mixed and dispersed.
実施２例１゜
ポリエチレンオキサイド（製鉄化学ＰＥ０−８平均分子
量１７０〜２２０万）２部をジクロルエタン８０部に溶
解して得られた粘稠溶液に、１４０メツシを通過した高
吸水性樹脂粉末（三洋化成すンウエッ）ＩＭ−３００）
２５部を加え、かきまぜて均一に分散させた。Example 2 1゜A viscous solution obtained by dissolving 2 parts of polyethylene oxide (Steel Chemical PE0-8 average molecular weight 1.7 to 2.2 million) in 80 parts of dichloroethane was added to a super absorbent resin powder (Sanyo IM-300)
25 parts were added and stirred to evenly disperse.
分散液をバルブ系不織布（ペーパータオル）にロール型
塗工機を用いて、固形分３２ ？／ｎｌの厚さに塗布乾
燥した。このものを１０ｅｔＡに切断し吸水能を測定し
た。樹脂塗布試料を水平に保持し、水を飽和するまで噴
霧した。未塗布試料を同様に処理し、両者の重量差は１
３０ｆであり、これより樹脂１２当りの吸水量は４００
１と求められた。The dispersion was applied to a valve-type nonwoven fabric (paper towel) using a roll-type coating machine, and the solid content was 32? The coating was applied to a thickness of /nl and dried. This product was cut into 10 etA pieces and the water absorption capacity was measured. The resin-coated sample was held horizontally and water was sprayed to saturation. The uncoated sample was treated in the same way, and the weight difference between the two was 1.
30f, and from this the water absorption amount per resin 12 is 400
1 was requested.
実施例２゜
ポリエチレンオキサイド（製鉄化学ＰＥ０−１５平均分
子量３３０〜３８０万） １．’５部をイソプロパツー
ル（９１１）１００部に溶解し、これに２００メツシを
通過した高吸水性樹脂粉末（日本触媒アクアリックＣＡ
）９部を混合分散させた。Example 2 Polyethylene oxide (Steel Chemical PE0-15 average molecular weight 3.3 million to 3.8 million) 1. ' 5 parts dissolved in 100 parts of isopropanol (911), super water absorbent resin powder (Nippon Shokubai Aqualic CA
) were mixed and dispersed.
分散液をポリエステルフィルム上に流延し、溶剤を揮発
して柔軟なフィルムを得た。このものは３３０倍の吸水
能を示した。The dispersion was cast onto a polyester film, and the solvent was evaporated to obtain a flexible film. This product showed 330 times the water absorption capacity.
Claims (3)
びポリエチレンオキサイドを溶解する有機溶剤を含有し
てなる吸水性コーティング組成物。(1) A water-absorbing coating composition comprising a super-absorbent resin powder, polyethylene oxide, and an organic solvent that dissolves the polyethylene oxide.
上、５００万以下である特許請求の範囲第１項記載の吸
水性コーティング組成物。(2) The water-absorbing coating composition according to claim 1, wherein the polyethylene oxide has an average molecular weight of 100,000 or more and 5,000,000 or less.
末１００部に対して０．５〜３０部である特許請求の範
囲第１項記載の吸水性コーティング組成物。(3) The water absorbent coating composition according to claim 1, wherein the composition of polyethylene oxide is 0.5 to 30 parts per 100 parts of super absorbent resin powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP263288A JPH0696690B2 (en) | 1988-01-11 | 1988-01-11 | Water absorbing coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP263288A JPH0696690B2 (en) | 1988-01-11 | 1988-01-11 | Water absorbing coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01182362A true JPH01182362A (en) | 1989-07-20 |
| JPH0696690B2 JPH0696690B2 (en) | 1994-11-30 |
Family
ID=11534768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP263288A Expired - Lifetime JPH0696690B2 (en) | 1988-01-11 | 1988-01-11 | Water absorbing coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696690B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2294687A (en) * | 1994-11-01 | 1996-05-08 | Sandoz Ltd | Concrete curing admixture |
| WO1997003128A1 (en) * | 1995-07-12 | 1997-01-30 | Sumitomo Seika Chemicals Co., Ltd. | Carboxylated polymer composition |
| US6042783A (en) * | 1996-03-21 | 2000-03-28 | Kaneka Corporation | Hollow yarn membrane used for blood purification and blood purifier |
| EP0810887B2 (en) † | 1995-02-20 | 2007-10-17 | Stockhausen GmbH | Sheet-like superabsorbent structures |
| WO2016052139A1 (en) * | 2014-09-29 | 2016-04-07 | 住友精化株式会社 | Resin composition for forming hydrophilic coating film |
| JPWO2015111610A1 (en) * | 2014-01-27 | 2017-03-23 | 日本エクスラン工業株式会社 | Hygroscopic polymer particles, and sheets, elements and total heat exchangers having the particles |
-
1988
- 1988-01-11 JP JP263288A patent/JPH0696690B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2294687A (en) * | 1994-11-01 | 1996-05-08 | Sandoz Ltd | Concrete curing admixture |
| GB2294687B (en) * | 1994-11-01 | 1997-08-13 | Sandoz Ltd | Concrete curing admixtures |
| EP0810887B2 (en) † | 1995-02-20 | 2007-10-17 | Stockhausen GmbH | Sheet-like superabsorbent structures |
| WO1997003128A1 (en) * | 1995-07-12 | 1997-01-30 | Sumitomo Seika Chemicals Co., Ltd. | Carboxylated polymer composition |
| US6042783A (en) * | 1996-03-21 | 2000-03-28 | Kaneka Corporation | Hollow yarn membrane used for blood purification and blood purifier |
| JPWO2015111610A1 (en) * | 2014-01-27 | 2017-03-23 | 日本エクスラン工業株式会社 | Hygroscopic polymer particles, and sheets, elements and total heat exchangers having the particles |
| WO2016052139A1 (en) * | 2014-09-29 | 2016-04-07 | 住友精化株式会社 | Resin composition for forming hydrophilic coating film |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0696690B2 (en) | 1994-11-30 |
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