JPH01168766A - Water-swellable paint composition - Google Patents
Water-swellable paint compositionInfo
- Publication number
- JPH01168766A JPH01168766A JP32863487A JP32863487A JPH01168766A JP H01168766 A JPH01168766 A JP H01168766A JP 32863487 A JP32863487 A JP 32863487A JP 32863487 A JP32863487 A JP 32863487A JP H01168766 A JPH01168766 A JP H01168766A
- Authority
- JP
- Japan
- Prior art keywords
- water
- parts
- swellable
- coating composition
- weight
- 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 description 7
- 239000003973 paint Substances 0.000 title description 9
- 239000008199 coating composition Substances 0.000 claims description 20
- 229920001971 elastomer Polymers 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 17
- 239000000806 elastomer Substances 0.000 claims description 16
- 150000002736 metal compounds Chemical class 0.000 claims description 11
- 239000003960 organic solvent Substances 0.000 claims description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 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 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 4
- 229940037003 alum Drugs 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- BLCTWBJQROOONQ-UHFFFAOYSA-N ethenyl prop-2-enoate Chemical compound C=COC(=O)C=C BLCTWBJQROOONQ-UHFFFAOYSA-N 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、水膨張性塗料組成物に関する。さらに詳しく
は、鋼矢板の継手からの漏水を防止する水膨張性塗料組
成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to water-swellable coating compositions. More specifically, the present invention relates to a water-swellable coating composition that prevents water leakage from joints of steel sheet piles.
従来、鋼矢板を使用して止水する土木工事のうち、河川
、海洋における止水工事では、鋼矢板の継手からの水漏
れが工事遅延の大きな原因となっている。その対策とし
て、鋼矢板の二重打込みなどの手段もあるが、工事費用
が莫大となる。そこで、現在は鋼矢板の継手に予め水膨
張性塗料を塗布し、これを水中または土中に打込むと、
水膨張性塗料が水と接触して膨張し、継手の空隙をうめ
て止水するという方法が行なわれている。Conventionally, among civil engineering works that use steel sheet piles to stop water, water leakage from joints of steel sheet piles is a major cause of construction delays in water stoppage works in rivers and oceans. As a countermeasure, there are measures such as double driving of steel sheet piles, but the construction costs are enormous. Therefore, currently, water-expandable paint is applied to the joints of steel sheet piles in advance, and this is driven into water or soil.
A method is used in which a water-swellable paint comes into contact with water and expands, filling the voids in the joint and stopping water.
しかしながら、従来の水膨張性塗料の水膨張体は、強度
が低いので高水圧の負荷に耐えないばかりでなく、その
中の電離性吸水ポリマーが水中へ溶出して水膨張体が収
縮するから、長期間にわたって止水性を保持することが
困薙であるなどの欠点があった。However, the water-swellable body of conventional water-swellable paints not only has low strength and cannot withstand the load of high water pressure, but also because the ionizable water-absorbing polymer in it dissolves into the water and the water-swellable body contracts. It has the disadvantage that it is difficult to maintain waterproof properties for a long period of time.
本発明は、鋼矢板の継手空隙を強度の高い水膨張体で充
填し、しかも水膨張体の収縮を防止して、長期間にわた
って止水性を保持することができる水膨張性塗料組成物
を提供することによって、鋼矢板における止水性の問題
を解決したものである。The present invention provides a water-swellable paint composition that can fill joint gaps in steel sheet piles with a high-strength water-swellable body, prevent the water-swellable body from shrinking, and maintain water-stopping properties for a long period of time. By doing so, the problem of water-stopping properties in steel sheet piles was solved.
本発明者らは、電離性吸水ポリマーと多価金属化合物と
をニジストマー中に分散させると、多価金属化合物が水
と接触してイオン化し、電離性吸水ポリマーをイオン架
橋して水への溶出を防止し。The present inventors discovered that when an ionizable water-absorbing polymer and a polyvalent metal compound are dispersed in a nidistomer, the polyvalent metal compound contacts water and ionizes, ionically crosslinks the ionizable water-absorbing polymer and elutes into water. Prevent.
長期間にわたってエラストマーの水膨張体を保持するこ
とができることを見いだし、本発明に到達した。It was discovered that water-swollen elastomers can be maintained for a long period of time, and the present invention was achieved.
すなわち、本発明は、電離性吸水ポリマー、多価金属化
合物およびエラストマーの有機溶剤溶液からなる水膨張
性塗料組成物を提供するものである。That is, the present invention provides a water-swellable coating composition comprising an organic solvent solution of an ionizable water-absorbing polymer, a polyvalent metal compound, and an elastomer.
本発明に使用する電離性吸水ポリマーは、カルボキシメ
チルセルローズまたはアクリル酸ビニルアルコール共重
合体、ポリアクリル酸などの、カルボキシル基を有する
ポリマーのナトリウム塩である。The ionizable water-absorbing polymer used in the present invention is a sodium salt of a polymer having a carboxyl group, such as carboxymethyl cellulose, vinyl acrylate alcohol copolymer, or polyacrylic acid.
これらは、吸水してゲル状となるが、これらのうちカル
ボキシメチルセルローズは、アクリル酸ビニルアルコー
ル共重合体やポリアクリル酸よりも、海水に対する吸水
量が大きい特徴がある。鋼矢板による止木工事は、河川
や海洋で行なわれるから、水膨張性塗料組成物には、水
ばかりでなく海水でも十分に吸水して膨張するカルボキ
シメチルセルローズが好適である。また、この電離性吸
水ポリマーは、エラストマー中に分散させるため粒径２
０〜４０ミクロンの微粒子であることが望ましく、カル
ボキシメチルセルローズは、このような微粒子化が容易
である。These materials absorb water and become gel-like, and among these, carboxymethyl cellulose has a characteristic that it absorbs more water into seawater than vinyl acrylate alcohol copolymer or polyacrylic acid. Since the anchoring work using steel sheet piles is carried out in rivers and oceans, carboxymethyl cellulose, which can sufficiently absorb and swell not only water but also seawater, is suitable for the water-swellable coating composition. In addition, this ionizable water-absorbing polymer has a particle size of 2
Fine particles of 0 to 40 microns are desirable, and carboxymethyl cellulose can be easily made into such fine particles.
本発明に使用する多価金属化合物は、水溶性の２価以上
の金属塩であって、電離性吸水ポリマーのカルボキシル
基のナトリウム塩と置換して、これを架橋し水膨張体を
難水溶性とするものである。The polyvalent metal compound used in the present invention is a water-soluble metal salt with a valence of two or more, which is substituted with the sodium salt of the carboxyl group of the ionizable water-absorbing polymer and crosslinked to make the water-swellable body poorly water-soluble. That is.
この目的に適するものとしては、カルシウム、亜鉛、鉄
、アルミニウム、クロムなどの多価金属塩である酸化カ
ルシウム、水酸化カルシウム、硫酸アルミニウム、硫酸
クロム、硫酸カルシウム、クロムミョウバン、硫酸第１
鉄、硫酸亜鉛、塩化スズおよび塩化第２鉄などがあるが
、酸化カルシウム、水酸化カルシウム、硫酸アルミニウ
ム、硫酸クロム、硫酸カルシウム、クロムミョウバンな
どが好ましい。Suitable for this purpose include polyvalent metal salts such as calcium, zinc, iron, aluminum, chromium, calcium oxide, calcium hydroxide, aluminum sulfate, chromium sulfate, calcium sulfate, chromium alum, monosulfuric acid, etc.
Examples include iron, zinc sulfate, tin chloride, and ferric chloride, and calcium oxide, calcium hydroxide, aluminum sulfate, chromium sulfate, calcium sulfate, chromium alum, and the like are preferred.
本発明に使用するエラストマーは、有機溶剤に溶解して
液状になることが必要である。これは。The elastomer used in the present invention needs to be dissolved in an organic solvent to become liquid. this is.
エラストマー溶液に本発明の他の成分を均一に分散させ
、また鋼矢板の継手への塗布作業を容易にするためであ
る。このエラストマーに対しては、ゴム弾性を有し、か
つ水膨張性塗料組成物として少なくとも ２ｋｇ／ａｍ
”の耐水圧性を有することが要求される。This is to uniformly disperse other components of the present invention in the elastomer solution and to facilitate application to joints of steel sheet piles. The elastomer has rubber elasticity and has a water-swellable coating composition of at least 2 kg/am.
It is required to have water pressure resistance of ”.
このような性質を有するものとしては、クロロプレンゴ
ム、スチレンブタジェンゴム、エチレン酢酸ビニル共重
合体およびポリスチレンポリブタジェンブロックコポリ
マーなどが挙げられる。これらのうちでは、クロロプレ
ンゴム、エチレン酢酸ビニル共重合体が好ましく、特に
両者の併用が好適である。Examples of materials having such properties include chloroprene rubber, styrene-butadiene rubber, ethylene-vinyl acetate copolymer, and polystyrene-polybutadiene block copolymer. Among these, chloroprene rubber and ethylene vinyl acetate copolymer are preferred, and a combination of both is particularly preferred.
これらのエラストマーを溶解するための有機溶剤として
は、トルエン、キシレンなどの芳香族炭化水素が好適で
ある。Aromatic hydrocarbons such as toluene and xylene are suitable as organic solvents for dissolving these elastomers.
本発明の水膨張性塗料組成物の各成分の配合割合は、エ
ラストマー１００重量部に対して、電離性吸水ポリマー
は１００〜４００重量部が適当である。１００重量部未
満では水膨張性が乏しく、また４００重量部を超えると
水膨張体が軟弱となり耐水圧性が低下する。The appropriate blending ratio of each component of the water-swellable coating composition of the present invention is 100 to 400 parts by weight of the ionizable water-absorbing polymer per 100 parts by weight of the elastomer. If it is less than 100 parts by weight, the water-swellability will be poor, and if it exceeds 400 parts by weight, the water-swellable body will become soft and the water pressure resistance will decrease.
多価金属化合物は５〜５０重量部が用いられ、５重量部
未満では電離性吸水ポリマーの架橋が十分でなく、また
５０重量部を超えると架橋が過度となって水膨張性が減
少するので好ましくない。The polyvalent metal compound is used in an amount of 5 to 50 parts by weight; if it is less than 5 parts by weight, the crosslinking of the ionizable water-absorbing polymer will not be sufficient, and if it exceeds 50 parts by weight, the crosslinking will be excessive and the water swellability will decrease. Undesirable.
有機溶剤は３００〜５００重量部使用され、３ｏＯ重量
部未満であるとエラストマー溶液の粘度が高すぎて塗布
作業が困難となり、また５００重量部を超えるとエラス
トマー溶液の粘度が低くなり塗布した塗膜が薄くなるた
め十分な水膨張体が得られない。The organic solvent used is 300 to 500 parts by weight. If it is less than 300 parts by weight, the viscosity of the elastomer solution will be too high and coating work will be difficult, and if it exceeds 500 parts by weight, the viscosity of the elastomer solution will be low and the applied coating will be difficult. Because the water becomes thin, sufficient water-swelled material cannot be obtained.
本発明の水膨張性塗料組成物は１通常の塗料製造装置に
より、各成分を混合して製造することができる。まず、
エラストマーと有機溶剤とを、撹拌機と還流冷却器とを
有するタンクで加熱溶解する。次に、このエラストマー
溶液に電離性吸水ポリマーおよび多価金属化合物を、サ
ンドミルやデシルバーなどの分散機で均一に混合するこ
とにより、本発明の水膨張性塗料組成物が得られる。ま
た、この際、酸化チタン、べんがら、カーボンブラック
などで着色することもできる。The water-swellable paint composition of the present invention can be manufactured by mixing each component using a conventional paint manufacturing apparatus. first,
The elastomer and organic solvent are heated and dissolved in a tank equipped with a stirrer and a reflux condenser. Next, the water-swellable coating composition of the present invention is obtained by uniformly mixing the ionizable water-absorbing polymer and the polyvalent metal compound into this elastomer solution using a dispersing machine such as a sand mill or DeSilver. Moreover, at this time, it is also possible to color with titanium oxide, red iron, carbon black, etc.
この水膨張性塗料組成物は、刷毛、スプレーなどで鋼矢
板の継手に約１ｍｍの厚さになるように塗布する。これ
を乾燥後に鋼矢板を接合しつつ土中または水中に打込む
と、水膨張性塗料組成物が水により膨張して鋼矢板の継
手内に充満し、漏水を防止することができる。This water-swellable coating composition is applied to a joint of steel sheet piles to a thickness of about 1 mm using a brush, spray, or the like. When this is dried and then poured into soil or water while joining steel sheet piles, the water-swellable paint composition expands with water and fills the joints of the steel sheet piles, thereby preventing water leakage.
また１本発明の水膨張性塗料組成物は、上述の鋼矢板の
みならず、コンクリート矢板、軽量鋼矢板などにも同様
な目的で使用できるほか、鋼製やコンクリート製のセグ
メントの止水剤としても有効である。In addition, the water-swellable coating composition of the present invention can be used not only for the above-mentioned steel sheet piles, but also for concrete sheet piles, lightweight steel sheet piles, etc., as well as as a water stopper for steel and concrete segments. is also valid.
本発明の水膨張性塗料組成物は、単に鋼矢板の継手に塗
布して乾燥するという簡単な操作で、鋼矢板の継手から
の漏水を完全に防止することができ、掘削の土留めおよ
び河川、海洋における締切りの止水工事の能率および安
全性を高めることができる優れたものである。The water-swellable coating composition of the present invention can completely prevent water leakage from the joints of steel sheet piles by simply applying it to the joints of steel sheet piles and drying. This is an excellent product that can improve the efficiency and safety of water cutoff construction in the ocean.
以下、本発明を実施例、比較例によりさらに詳細に説明
する６例中の部は重量部を、また％は重量％を表わす。Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples. In the six examples, "part" means "part by weight" and "%" means percent by weight.
実施例１
クロロプレンゴムであるネオプレンＷＲＴ （昭和電エ
デュポン株式会社製）５０部と、酢酸ビニル含有量４５
％のエチレン酢酸ビニル共重合体であるスミテートＲＢ
ＩＩ（住友化学工業株式会社製）５０部とを、撹拌機と
還流冷却器とを取り付けたフラスコに採り、４００部の
キシレンを加え５０〜６０℃に加熱して溶解しエラスト
マー溶液５００部を得た。これに、電離性吸水ポリマー
として、カルボキシメチルセルローズのナトリウム塩で
あるセロゲン３Ｈ（第一工業製薬株式会社１！１）２５
０部と、多価金属化合物として硫酸アルミニウム１０部
とを添加し、デシルバーで分散させて本発明の水膨張性
塗料組成物を得た。Example 1 50 parts of neoprene WRT (manufactured by Showa Den Edupon Co., Ltd.), which is chloroprene rubber, and vinyl acetate content of 45
% ethylene vinyl acetate copolymer Sumitate RB
II (manufactured by Sumitomo Chemical Co., Ltd.) in a flask equipped with a stirrer and a reflux condenser, and 400 parts of xylene was added thereto and dissolved by heating to 50 to 60°C to obtain 500 parts of an elastomer solution. Ta. In addition, as an ionizable water-absorbing polymer, Celogen 3H (Daiichi Kogyo Seiyaku Co., Ltd. 1!1), which is a sodium salt of carboxymethyl cellulose, 25
0 parts and 10 parts of aluminum sulfate as a polyvalent metal compound were added and dispersed with DeSilver to obtain a water-swellable coating composition of the present invention.
得られた水膨張性塗料組成物について以下の試験を行な
った。The following tests were conducted on the obtained water-swellable coating composition.
まず、口径１６０■、耐圧２０ ｋｇ／ｃｍ２（７）
７ ランジの片面にこの水膨張性塗料組成物を厚さ０゜
８ｍに塗布し、乾燥した塗膜の周辺を切り取って直径１
００ｍｍの円形とし、さらにこの円形から直径８０ｍｍ
の同心円を切り取って、巾２０ＩＩＩ１１、厚さＱ、８
ｍｍのリング状塗膜をフランジ面に形成した。First, diameter 160■, pressure resistance 20 kg/cm2 (7)
7 Apply this water-swellable coating composition to a thickness of 0°8m on one side of the lunge, cut out the periphery of the dried coating film, and cut it into a diameter of 1°.
00mm circle, and from this circle diameter 80mm
Cut out concentric circles, width 20III11, thickness Q, 8
A ring-shaped coating film with a thickness of mm was formed on the flange surface.
次に、中心に空気送入口をつけた同形の他のフランジを
先のフランジに重ね、２ｍｍの間隙をもたせて固定した
。これを水に浸漬し２４時間後に空気送入口から圧縮空
気で４ｋｇ／ａｍ”に加圧したところ、空気は全く漏れ
なかった。この状態で２週間加圧を継続したが耐圧性は
低下しなかった。Next, another flange of the same shape with an air inlet in the center was placed on top of the previous flange and fixed with a gap of 2 mm. When this was immersed in water and 24 hours later pressurized to 4 kg/am'' with compressed air from the air inlet, no air leaked. Pressurization was continued in this state for 2 weeks, but the pressure resistance did not decrease. Ta.
また、この水膨張性塗料組成物をシリコーン紙に塗布し
て乾燥後、４Ｘ５ｃｍに裁断しシリコーン紙からはがし
た遊離塗膜を水に浸漬して膨張させ、浸漬前後の重量変
化から次のようにして膨張率を求めた。In addition, this water-swellable coating composition was applied to silicone paper, dried, and then cut into 4 x 5 cm pieces and peeled off from the silicone paper.The free coating film was immersed in water to swell, and the weight change before and after immersion showed the following results. The expansion rate was calculated using
その結果、浸漬後２４時間の膨張率は １８．６で、２
日後には２０．４と最大値を示し、２週間後でも １６
．３であり最大値より２０％減少したのみであった。As a result, the expansion coefficient 24 hours after immersion was 18.6, 2
After 1 day, the maximum value was 20.4, and even after 2 weeks it was 16.
．． 3, which was only a 20% decrease from the maximum value.
これらの結果を第１表に示す。These results are shown in Table 1.
比較例１
実施例１に準じて得られたエラストマー溶液５００部に
、実施例１で使用した電離性吸水ポリマーであるセロゲ
ン３Ｈ（前出）２５０部のみを添加して、デシルバーで
分散させた。これは、実施例１の組成物から本発明の必
須成分である多価金属化合物を除いたものに相当する。Comparative Example 1 To 500 parts of an elastomer solution obtained according to Example 1, only 250 parts of Celogen 3H (mentioned above), which is an ionizable water-absorbing polymer used in Example 1, was added and dispersed with DeSilver. . This corresponds to the composition of Example 1 from which the polyvalent metal compound, which is an essential component of the present invention, is removed.
この水膨張性塗料組成物について実施例１に記載した方
法に準じて耐圧試験を行なったところ、２ｋｇ／ｃｍ２
の圧力で空気が漏れはじめた。さらに、加圧を継続す
ると、１日後に水膨張体は破壊され耐圧性を失った。When a pressure test was conducted on this water-swellable paint composition according to the method described in Example 1, the pressure resistance was 2 kg/cm2.
Air began to leak due to the pressure. Furthermore, when pressurization was continued, the water-expandable body was destroyed and lost its pressure resistance after one day.
また、実施例１と同様にして算出された膨張率は、１日
後 １４．３で、２日後 １１．６となり。Further, the expansion coefficient calculated in the same manner as in Example 1 was 14.3 after 1 day and 11.6 after 2 days.
２週間後には６．４に低下し最大値より５５％も減少し
た。これは、この水膨張性塗料組成物中の電離性吸水ポ
リマーが、水中へ拡散したことによるものである。Two weeks later, it dropped to 6.4, a 55% decrease from the maximum value. This is because the ionizable water-absorbing polymer in this water-swellable coating composition diffuses into water.
これらの結果を第１表に示す。These results are shown in Table 1.
第１表Table 1
Claims (5)
ストマーの有機溶剤溶液からなる水膨張性塗料組成物。(1) A water-swellable coating composition comprising an organic solvent solution of an ionizable water-absorbing polymer, a polyvalent metal compound, and an elastomer.
ズである特許請求の範囲第１項記載の水膨張性塗料組成
物。(2) The water-swellable coating composition according to claim 1, wherein the ionizable water-absorbing polymer is carboxymethyl cellulose.
、硫酸カルシウム、酸化カルシウム、クロムミヨウバン
、水酸化カルシウムから選ばれる１種である特許請求の
範囲第１項記載の水膨張性塗料組成物。(3) The water-swellable coating composition according to claim 1, wherein the polyvalent metal compound is one selected from aluminum sulfate, chromium sulfate, calcium sulfate, calcium oxide, chromium alum, and calcium hydroxide.
ロロプレンゴムとの混合物である特許請求の範囲第１項
記載の水膨張性塗料組成物。(4) The water-swellable coating composition according to claim 1, wherein the elastomer is a mixture of ethylene vinyl acetate copolymer and chloroprene rubber.
ポリマー１００〜４００重量部、多価金属化合物５〜５
０重量部および有機溶剤３００〜５００重量部の割合か
らなる特許請求の範囲第１項記載の水膨張性塗料組成物
。(5) 100 to 400 parts by weight of ionizable water-absorbing polymer and 5 to 5 parts by weight of polyvalent metal compound per 100 parts by weight of elastomer.
The water-swellable coating composition according to claim 1, comprising 0 parts by weight of the organic solvent and 300 to 500 parts by weight of the organic solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32863487A JPH0696688B2 (en) | 1987-12-25 | 1987-12-25 | Water-swellable coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32863487A JPH0696688B2 (en) | 1987-12-25 | 1987-12-25 | Water-swellable coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01168766A true JPH01168766A (en) | 1989-07-04 |
| JPH0696688B2 JPH0696688B2 (en) | 1994-11-30 |
Family
ID=18212455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32863487A Expired - Fee Related JPH0696688B2 (en) | 1987-12-25 | 1987-12-25 | Water-swellable coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696688B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241210A (en) * | 2005-03-01 | 2006-09-14 | Nippon Kagaku Toryo Kk | Water-swelling coating composition and waterstop material |
| JP2009057476A (en) * | 2007-08-31 | 2009-03-19 | Nippon Kagaku Toryo Kk | Meltable water-swellable water-stopping composition and water-stopping method using the same |
| WO2010073538A1 (en) * | 2008-12-25 | 2010-07-01 | 新日本製鐵株式会社 | Steel sheet pile wall and method for constructing same |
| JP2012077204A (en) * | 2010-10-01 | 2012-04-19 | Nippon Kagaku Toryo Kk | Water-swellable sealing material composition |
| JP2012077205A (en) * | 2010-10-01 | 2012-04-19 | Nippon Kagaku Toryo Kk | Water-swelling friction reducing composition |
| WO2019193806A1 (en) | 2018-04-02 | 2019-10-10 | 株式会社日立ハイテクノロジーズ | Temperature control device and genetic testing device |
| WO2020149269A1 (en) | 2019-01-18 | 2020-07-23 | 日本化学塗料株式会社 | Curable water-swelling waterstop material, waterstop steel sheet pile, waterstop steel sheet pile production method, and water-stopping method |
-
1987
- 1987-12-25 JP JP32863487A patent/JPH0696688B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241210A (en) * | 2005-03-01 | 2006-09-14 | Nippon Kagaku Toryo Kk | Water-swelling coating composition and waterstop material |
| JP2009057476A (en) * | 2007-08-31 | 2009-03-19 | Nippon Kagaku Toryo Kk | Meltable water-swellable water-stopping composition and water-stopping method using the same |
| WO2010073538A1 (en) * | 2008-12-25 | 2010-07-01 | 新日本製鐵株式会社 | Steel sheet pile wall and method for constructing same |
| JP4757959B2 (en) * | 2008-12-25 | 2011-08-24 | 新日本製鐵株式会社 | Steel sheet pile wall and its construction method |
| JP2012077204A (en) * | 2010-10-01 | 2012-04-19 | Nippon Kagaku Toryo Kk | Water-swellable sealing material composition |
| JP2012077205A (en) * | 2010-10-01 | 2012-04-19 | Nippon Kagaku Toryo Kk | Water-swelling friction reducing composition |
| WO2019193806A1 (en) | 2018-04-02 | 2019-10-10 | 株式会社日立ハイテクノロジーズ | Temperature control device and genetic testing device |
| WO2020149269A1 (en) | 2019-01-18 | 2020-07-23 | 日本化学塗料株式会社 | Curable water-swelling waterstop material, waterstop steel sheet pile, waterstop steel sheet pile production method, and water-stopping method |
| US12043739B2 (en) | 2019-01-18 | 2024-07-23 | Nippon Chemical Paint Co., Ltd. | Curable water-swelling waterstop material, waterstop steel sheet pile, waterstop steel sheet pile production method, and water-stopping method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0696688B2 (en) | 1994-11-30 |
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