JPH03197690A - Water treating agent - Google Patents

Water treating agent

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Publication number
JPH03197690A
JPH03197690A JP33691489A JP33691489A JPH03197690A JP H03197690 A JPH03197690 A JP H03197690A JP 33691489 A JP33691489 A JP 33691489A JP 33691489 A JP33691489 A JP 33691489A JP H03197690 A JPH03197690 A JP H03197690A
Authority
JP
Japan
Prior art keywords
water
mol
treating agent
scale
corrosion
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
Application number
JP33691489A
Other languages
Japanese (ja)
Inventor
Takashi Okamoto
俊 岡本
Michiyo Ishikawa
石川 美智代
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP33691489A priority Critical patent/JPH03197690A/en
Publication of JPH03197690A publication Critical patent/JPH03197690A/en
Pending legal-status Critical Current

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  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PURPOSE:To provide a water treating agent made of a water soluble polymer effectively preventing the corrosion of metals and the formation of scale in a water system by adding monochloroacetic acid to polyvinylamine or polyallylamine. CONSTITUTION:A water soluble polymer having 1,000-100,000 average mol.wt., contg. structural units of aminocarboxylate and represented by the formula is used as a water treating agent for preventing the corrosion of various metallic materials and the formation of scale in a water system. In the formula, X is H, a monovalent metal, ammonium or org. amine, (a) is 0 or 1,(l is 0-95 mol%, (m) is 0.100mol%, (n) is 0-100mol%, (m+n) >=5mol% and (l+m+n)=100 mol%. The water treating agent has significant corrosion and scale preventing effects in the water system.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は水処理剤に係り、特に水系における金属の腐食
やスケールの生成を効果的に防止することができる水処
理剤に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a water treatment agent, and particularly to a water treatment agent that can effectively prevent metal corrosion and scale formation in an aqueous system.

[従来の技術] 従来、水系の金属の腐食防止剤やスケール防止剤として
は、(メタ)アクリル酸重合体、マレイン酸重合体又は
(メタ)アクリル酸・マレイン酸共重合体が知られてい
る。
[Prior Art] Conventionally, (meth)acrylic acid polymers, maleic acid polymers, or (meth)acrylic acid/maleic acid copolymers are known as water-based metal corrosion inhibitors and scale inhibitors. .

[発明が解決しようとする課題] しかしながら、従来提供されているアクリル酸及び/又
はマレイン酸系重合体よりなる薬剤では、十分な腐食防
止効果及びスケール防止効果が得られないという欠点が
ある。
[Problems to be Solved by the Invention] However, the conventionally provided agents made of acrylic acid and/or maleic acid-based polymers have a drawback in that sufficient corrosion-preventing effects and scale-preventing effects cannot be obtained.

本発明は上記従来の問題点を解決し、水系における金属
の腐食防止効果やスケールの生成防止効果に優れた水処
理剤を提供することを目的とする。
An object of the present invention is to solve the above-mentioned conventional problems and provide a water treatment agent that is excellent in preventing corrosion of metals and preventing scale formation in aqueous systems.

[課題を解決するための手段] 本発明の水処理剤は、下記−数式で(I)で示される平
均分子量1000〜100000の水溶性重合体を含む
ことを特徴とする。
[Means for Solving the Problems] The water treatment agent of the present invention is characterized by containing a water-soluble polymer having an average molecular weight of 1,000 to 100,000 and represented by (I) in the following formula.

以下に本発明の詳細な説明する。The present invention will be explained in detail below.

本発明の水処理剤は、前記−数式[I]で示される平均
分子量1000〜100000の水溶性重合体を含むも
のである。
The water treatment agent of the present invention contains a water-soluble polymer represented by formula [I] above and having an average molecular weight of 1,000 to 100,000.

本発明に係る新規水溶性重合体は、例えば、ポリビニル
アミン又はポリアリルアミンに対して、モノクロル酢酸
を付加させることにより、従来公知の方法(E、Bay
er、に、Geckeler、に、Wein;rter
The novel water-soluble polymer according to the present invention can be produced by a conventionally known method (E, Bay
er, ni, Geckler, ni, Wein;rter
.

h4akromo1.chem、、181.585 (
1980)) に従って容易に製造することができ、重
合体の組成(i、m。
h4akromo1. chem,, 181.585 (
(1980)) and the composition of the polymer (i, m).

n)はモノクロル酢酸の添加量を変化させることにより
、任意に調整することができる。
n) can be arbitrarily adjusted by changing the amount of monochloroacetic acid added.

例えば で表わされる重合体は次のようにして製造できる。for example The polymer represented by can be produced as follows.

即ち、まず、温度計及び攪拌機を備えた11三つロフラ
スコに水300mfを採り、ポリビニルアミン5g、モ
ノクロル酢酸6g及び水酸化カリウム10.7gを加え
た後、還流しながら50℃で24時間加熱する。これに
より上記重合体を得ることができる。
That is, first, 300 mf of water was placed in a 11-three-bottle flask equipped with a thermometer and a stirrer, and 5 g of polyvinylamine, 6 g of monochloroacetic acid, and 10.7 g of potassium hydroxide were added thereto, and then heated at 50° C. for 24 hours while refluxing. . This allows the above polymer to be obtained.

同様に は前記の合成方法においてモノクロル酢酸の添加量を低
減させれば得ることができる。
Similarly, it can be obtained by reducing the amount of monochloroacetic acid added in the above synthesis method.

[作用] 前記−数式[I]で示される、構造単位としてアミノカ
ルボン酸塩を有する水溶性重合体は防食効果及びスケー
ル防止効果が著しく優れる。
[Function] The water-soluble polymer having an aminocarboxylic acid salt as a structural unit, represented by the above-mentioned formula [I], has extremely excellent anti-corrosion and anti-scaling effects.

[実施例] 以下に実施例及び比較例を挙げて本発明をより具体的に
説明する。
[Example] The present invention will be described in more detail with reference to Examples and Comparative Examples below.

実施例1〜8、比較例1.2 脱塩水にCaCj22 * 2H20300mg/J2
(CaCO3換算量)とNaHCOs 300mg/u
(CaCO3換算量)を添加し、p)lを9.1に調整
した試験液500mAを三角フラスコに入れ、更に′s
1表記載の水処理剤N011〜9(但し、いずれもナト
リウム塩。即ち、N。
Examples 1 to 8, Comparative Example 1.2 CaCj22*2H20300mg/J2 in demineralized water
(CaCO3 equivalent amount) and NaHCOs 300mg/u
Add 500 mA of the test solution (calculated amount of CaCO3) and adjust p)l to 9.1 into an Erlenmeyer flask, and add 's
Water treatment agents No. 1 to 9 listed in Table 1 (however, all are sodium salts, that is, N.

1〜8は前記−数式[I]においてX=Na、)20 
m g / Itを添加しく但し、比較例2においては
水処理剤無添加)、密栓した後、水温50℃の恒温水槽
中に浸漬し、20時間静置した。次に、この試験液を0
.1μmのメンブランフィルタ−で濾過し、濾液中のカ
ルシウムイオン濃度をEDTA法により測定した。結果
を第2表に示す。
1 to 8 are the above formula [I] where X=Na, )20
(However, in Comparative Example 2, no water treatment agent was added).After sealing, the tube was immersed in a constant temperature water bath with a water temperature of 50.degree. C. and allowed to stand for 20 hours. Next, add this test solution to 0
.. It was filtered through a 1 μm membrane filter, and the calcium ion concentration in the filtrate was measured by the EDTA method. The results are shown in Table 2.

この結果から、本発明の水処理剤(No、1〜8)が、
炭酸カルシウムの析出を抑制する効果において、従来品
(No、9)に比べて極めて優れ第1 表 第2表 実施例9〜16、比較例3.4 下記組成の合成海水を調製した(但し、この合成水は海
水の2倍濃縮水に相当する)。
From this result, the water treatment agents of the present invention (Nos. 1 to 8)
Extremely superior to the conventional product (No. 9) in terms of the effect of suppressing precipitation of calcium carbonate Table 1 Table 2 Examples 9 to 16, Comparative Example 3.4 Synthetic seawater with the following composition was prepared (However, This synthetic water is equivalent to twice the concentration of seawater).

CaCj22 ・2H20: 2000mg/j2  
(CaCO3換算量)NaHCO3: 250mg/J
2  (CaCO3換算量)NaCJ2  : 600
00 mg/J2p)l : 8.5 上記合成海水500mAを三角フラスコに入れ、更に第
1表記載の水処理剤No、1〜9を第3表に示す量添加
しく但し、比較例4は水処理剤無添加)、密栓した後、
水温60℃の恒温水槽中に浸漬し、20時間静置した。
CaCj22 ・2H20: 2000mg/j2
(CaCO3 equivalent amount) NaHCO3: 250mg/J
2 (CaCO3 equivalent amount) NaCJ2: 600
00 mg/J2p)l: 8.5 500 mA of the above synthetic seawater was placed in an Erlenmeyer flask, and water treatment agents Nos. 1 to 9 listed in Table 1 were added in amounts shown in Table 3. However, in Comparative Example 4, water (no processing agents added), after sealing,
It was immersed in a constant temperature water bath with a water temperature of 60° C. and allowed to stand for 20 hours.

次に、フラスコを取り出し、試験液の濁りや沈殿物の有
無などを目視により観察した。結果を第3表に示す。
Next, the flask was taken out and the test liquid was visually observed for turbidity and presence of precipitate. The results are shown in Table 3.

この結果から、本発明の水処理剤(No、1〜8)が合
成海水中におけるスケールの析出を抑制する効果につい
ても、従来品(No、9)に比べ、極めて優れているこ
とが認められる。
From these results, it is recognized that the water treatment agents of the present invention (Nos. 1 to 8) are extremely superior to the conventional product (No. 9) in suppressing scale precipitation in synthetic seawater. .

第3表 実施例17〜24、比較例5.6 第4表に記載の各水質を示す試験液A又はBのIItを
ビーカーにとり、これに第1表記載の水処理剤No、1
〜9を第5表に示す量加え(但し、比較例6は水処理剤
無添加)、水温を50℃に保持した。このビーカーに軟
鋼製テストピースを撹拌棒に懸吊し、160rpmの回
転速度で回転させながら5日間その状態を維持した。な
お、第4表において試験液Aの水質は密閉循環式冷却水
系、低濃縮開放循環冷却水系、試験液Bの水質は約3倍
濃縮開放循環冷却水系に相当する。結果を第5表に示す
Table 3 Examples 17 to 24, Comparative Example 5.6 Take test liquid A or B IIt showing each water quality listed in Table 4 into a beaker, and add water treatment agents No. 1 and 1 listed in Table 1.
- 9 were added in the amounts shown in Table 5 (however, no water treatment agent was added in Comparative Example 6), and the water temperature was maintained at 50°C. A mild steel test piece was suspended from a stirring rod in this beaker and maintained in that state for 5 days while rotating at a rotational speed of 160 rpm. In Table 4, the water quality of test liquid A corresponds to a closed circulation cooling water system, a low concentration open circulation cooling water system, and the water quality of test liquid B corresponds to an approximately 3 times concentrated open circulation cooling water system. The results are shown in Table 5.

この結果から、比較例5として示した薬剤No、9に比
べ、本発明の水処理剤N091〜8は極めて優れた腐食
抑制効果を有することが詔められる。
From this result, it can be concluded that, compared to chemicals No. 9 and No. 9 shown as Comparative Example 5, water treatment agents Nos. 091 to 8 of the present invention have an extremely superior corrosion inhibiting effect.

第4表 第5表 [発明の効果] 以上詳述した通り、本発明の水処理剤は、防食効果及び
スケール防止効果が著しく高く、水系の金属の腐食及び
スケールの生成を効果的にかつ確実に防止することがで
きるため、各種水系の水処理剤として極めて有効である
Table 4 Table 5 [Effects of the Invention] As detailed above, the water treatment agent of the present invention has extremely high anticorrosion and scale prevention effects, and effectively and reliably prevents metal corrosion and scale formation in water systems. It is extremely effective as a water treatment agent for various water systems.

Claims (1)

【特許請求の範囲】[Claims] (1) 下記一般式(I)で示される平均分子量100
0〜100000の水溶性重合体を含む水処理剤。 ▲数式、化学式、表等があります▼ (但し、[I]式中、 Xは水素、1価金属、アンモニウム基又は 有機アミン基を表し、 aは0又は1、 lは0〜95モル%、 mは0〜100モル%、 nは0〜100モル%であり、かつ、 m+n≧5モル%、 l+m+n=100モル%、 である。
(1) Average molecular weight 100 represented by the following general formula (I)
A water treatment agent containing a water-soluble polymer of 0 to 100,000. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (However, in formula [I], X represents hydrogen, monovalent metal, ammonium group, or organic amine group, a is 0 or 1, l is 0 to 95 mol%, m is 0 to 100 mol%, n is 0 to 100 mol%, and m+n≧5 mol%, l+m+n=100 mol%.
JP33691489A 1989-12-26 1989-12-26 Water treating agent Pending JPH03197690A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33691489A JPH03197690A (en) 1989-12-26 1989-12-26 Water treating agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33691489A JPH03197690A (en) 1989-12-26 1989-12-26 Water treating agent

Publications (1)

Publication Number Publication Date
JPH03197690A true JPH03197690A (en) 1991-08-29

Family

ID=18303804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33691489A Pending JPH03197690A (en) 1989-12-26 1989-12-26 Water treating agent

Country Status (1)

Country Link
JP (1) JPH03197690A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5256253A (en) * 1992-08-24 1993-10-26 Betz Paperchem Inc. Methods for inhibiting barium sulfate deposition using a poly(amine)compound or its salts in papermaking systems
US5629385A (en) * 1994-11-23 1997-05-13 Betzdearborn Inc. Allylamine copolymers having phosphonic, carboxylic or sulfonic groups and N-oxide derivatives thereof
WO2015123294A1 (en) * 2014-02-11 2015-08-20 Cytec Industries Inc. Primary amine-containing polymers useful as scale inhibitors
US10906828B2 (en) 2015-02-11 2021-02-02 Cytec Industries Inc. Modified amines useful as scale inhibitors in wet process phosphoric acid production

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5256253A (en) * 1992-08-24 1993-10-26 Betz Paperchem Inc. Methods for inhibiting barium sulfate deposition using a poly(amine)compound or its salts in papermaking systems
US5629385A (en) * 1994-11-23 1997-05-13 Betzdearborn Inc. Allylamine copolymers having phosphonic, carboxylic or sulfonic groups and N-oxide derivatives thereof
WO2015123294A1 (en) * 2014-02-11 2015-08-20 Cytec Industries Inc. Primary amine-containing polymers useful as scale inhibitors
CN106232874A (en) * 2014-02-11 2016-12-14 塞特工业公司 As the polymer containing primary amine that scale inhibitor is useful
US9902617B2 (en) 2014-02-11 2018-02-27 Cytec Industries Inc. Primary amine-containing polymers useful as scale inhibitors
EA031387B1 (en) * 2014-02-11 2018-12-28 Сайтек Индастриз Инк. Process for inhibiting scale produced during wet process phosphoric acid production using primary amine-containing polymers
US10214421B2 (en) 2014-02-11 2019-02-26 Cytec Industries Inc. Primary amine-containing polymers useful as scale inhibitors
AU2015217240B2 (en) * 2014-02-11 2019-05-23 Cytec Industries Inc. Primary amine-containing polymers useful as scale inhibitors
CN110396149A (en) * 2014-02-11 2019-11-01 塞特工业公司 As the useful polymer containing primary amine of scale inhibitor
CN110396149B (en) * 2014-02-11 2023-09-05 塞特工业公司 Primary amine-containing polymers useful as scale inhibitors
US10906828B2 (en) 2015-02-11 2021-02-02 Cytec Industries Inc. Modified amines useful as scale inhibitors in wet process phosphoric acid production

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