JPS59100272A - metal corrosion inhibitor - Google Patents

Abstract

PURPOSE:To provide a titled corrosion preventive agent which provides an excellent corrosion preventive effect in the concn. of low total phosphate radical in water by incorporating phosphonic acid or its salt, aluminate or aluminum salt as well as a water soluble acrylic polymer. CONSTITUTION:A titled corrosion preventive agent for metal contains components (a), (b), (c), i.e., the component (a); phosphonic acid or its salt, the component (b); aluminate or aluminum salt, the component (c); 1 kinds among water soluble acrylic polymer, water soluble methacrylic polymer and water soluble maleic polymer. Said agent is highly effective in preventing corrosion in water, more particularly in fresh water, even if the concn. in terms of a total phosphate radical is about <=3ppm. The weight ratio between the amt. in terms of the total phosphate radical in the component (a) and the amt. in terms of the total aluminum metal in the component (b) is set preferably at (1-10):(10-1) and the weight ratio between the total amt. of the above-mentioned amt. in terms of the total phosphate radical and the amt. in terms of the total aluminum metal and the total substantial weight of the above-mentioned water soluble polymer is set preferably at (5-1):(1-10).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a corrosion inhibitor for metals, and more specifically, the present invention relates to a corrosion inhibitor for metals, and more specifically, the present invention relates to a corrosion inhibitor for metals. Corrosion inhibitor V' for metal materials in fresh water
It is related to C.

In order to prevent corrosion of metals such as iron and aluminum mainly in fresh water, for example in open circulation cooling water systems, corrosion inhibitors containing chromate as a main ingredient have conventionally been used as decoys. Chromate-based corrosion inhibitors have an excellent corrosion-preventing effect, but their ``disadvantages such as strong criminal records'' and rl,
The discharge of A3 wastewater is strictly regulated. , te? (1 no nitonnai if phosphorus pleasure, polymerization 1) nhyaku・engei 1, 1 jji, each of phosphorous, phosphate, etc. 6-) phosphorus replacement yarn 11”
, @ 'purl 'z-]: delete t-, Z) thing is 1FM tofx) ('p (each 4 of 1, ξt1, etc.)
tli (l-)su:, 1ρ1 meal 1! 2j-tt cut 1, [,'', cap) U゛(ζsuj intervention effect to 14 ( [ζ'', total phosphorus m'U+
Hakama! ＞'Dark 1＞! '(1;,j'F I T -P
O4p degree" toy. ) is 5pprn or more at the heart wall.Add 1. Jn has been Z), 1 and! 1r
)'s rin r↓τ thread ihi * 467 antecedent/゛] 轡・j and otto and noni recursion, R month-I+'1. st) Mi9rIM
(': 7: !I, %) Growth k III: J
f-L-t-.

Iwa64・e・Related to this magazine's Ruju・11゛11'-
What kind of goods, wheels, etc. is the red tide produced by -7) tz) solid matter and iz -) -C? Follow, ) - Qi, 1',
Sakae 1::, ``+'', +(nee it E as
-T)G1. -t,'+7 noNl chain water area-...
Will%, 't;Zj'h force decrease or need to be carried out, Rin's aid month, 111 (is being carried out, 1 unexploded I(1] +;t, thus Karin's Discharged paddy, control 7 - 5.3 ppm for rice that is trying to respond
After that) 1. ” -PO4177% Our aim is to provide a metal corrosion inhibitor that can exhibit the most effective corrosion protection effect even in corrosion.

In view of the above-mentioned points, the present invention is based on the results of extensive research, and uses Pospon M and alumino acid salts or aluminum! Methacrylic acid type or tit-=ray/i!P
By using a composition consisting of a water-based tt polymer, 4. ：The object of the invention can be achieved Total Heading 7: The present invention has been completed.

That is, the defense 1 to 11 to the metal j of the 1st investigation is (al
Phospho/'acid (salt), tbl -aluminate or aluminum salt, 1F Hinitel 7 Acrylic acid water bath polymer, Methacryso 1
Acid-based water-soluble polymer people I/I: #% in a thread water bath V
- at least - selected from the group consisting of bomber e'-
The water-based poly 1 to wo matches A) (- and tj character).

Hereinafter, 1 τ 1 line 1 light will be explained in further detail.

Book'Ibe) (J] θ) First composition 5) (fat component) as Z'J phospore father (-', as its falcon (', -F's human mountain, til+).

(...l, tlVI T indicates f'16 N'combination'+6
;Also iJ FJA KAIJU n”-J j+ru.

Formula (11: ()%Formula% (In the formula, X, ~, X371!IhiY1~Y3(・212
, respectively, times- or Te-)-7H 1℃, water, V atom,
v, +1. -, l;! ,'4-,P-bl,:Z+-Z
ni-;t, each)・, same-also(・“l/shina-notei-”
C is also good, hydrogen field f,)' Luke 11 gold (li rinko also it
A2. I wear a hand-niumumemi-245,) Iwawasa in the Juki Chu ceremony! 1 is also hospo, chuu, ' or -6's j and L--t
li, next one or lJ'll 7J-sat.

Naka Ato No 1/11 Mae Ding Ruosho/Crooster! (
V test-1・t A P J and when 1. )ノ・5%
,, -j- of latriull1, potassium, anthen--uno, i (2+ no i / dimethino 1 phosphono, / goryo-ha zu-sufu 1 also) acid and its +I-su1 lano 1.
pu11) tsu11, r no 壬, =Y'ノ12 explosive type (old: [, philtral, ■e1.de and R4 can be the same - or v, different' (°). , the following certain (N: IO l 11 4r -P -(')ZI...W1 YI OZ? ,v) wisely (,,: R*'d, ,h written group tA+
or charcoal 1 represents a lower aryal group of 1 to 5;
Go to 3 (7): represents the product 9, 1, 1 Hosun j-n position omitted in formula (11), or 4=t
, l"t's) tW and (the first-order one is exemplified by Z), 3 (11 gozl/l/Asianotetramegur ΣJ, Sunjnia^tsu and Hyson's sodium, Power 11 um, ammonium > 1 (21 diacid thylene triamine/pentamethyl phosponic acid and its sodium, potassium, ammonium salts\ column 1 (3) trienale/detraamine hexamethyl phosphonic acid and its sodium, potassium, ammonium salts formula (Ill ): Z20 Y 0Z4 (wherein,
(Class alkyl group, hydroxyl group or ammonium group.

Table 1 ~; z1 ~ z4 may have the same meaning as in the case of the above-mentioned intermediate 9゜- [(■1) As a phosphonic acid or a salt thereof represented by the formula, the following is shown in Production 1. .

(Month Hydroquine Enerite/Diphosphonic Acid) NIE
r) PJ 4. ) and its sodium, potassium, ammonium salts ・ (2; Hydroxypropyligen diphospho/r:# and its wotriulium l-, potassium, ammonium basic formula OV
I: Zs R2, Rs,: R4Rs (In the formula, ~Re may be the same or different, and each represents a hydrogen atom, carbon DI~, lower alkyl of 5, or d-carbon group) ;XI-n and zI.

Z2 has the same meaning as in formula 11. As the phosphonic acid subtracted by ♂2 in the above formula (1v+), the following can be shown.

Ill, J., 2. , 4-,) Rikasiboquinbutane-2-ho Suhonkan' (hereinafter referred to as rTcB, PJ
That's what it means. ) and -t putrium, . Cariou. Ammonium salt + 21J. 2-dicarboxy7buta/-. 2-Phosphonic acid and υ・zonosu 1・、su・rum、potassium、bunomoniu 11+31 1.2.4-tricarboxyhexane-2-
Phosphonic acids and their salts i. % potassium, anr
The second phase of the present invention) iI/min ((blrJv min))
, A/L. 1. Potassium, etc. is used as a aluminum salt.

Aluminum chloride: rium, polycrystalline aluminum 71/min, %. Examples include aluminum acid, aluminum acetate, and aluminum acetate. .

In the present invention, as a water-soluble polymer having 517 f+V1 (C1 component) and 5 C1, polyacrylic acid,
1) 11+ polymers such as methacrylic acid, polymaleic acid, and acrylic acid, methacrylic acid or 7-toy/P binary copolymers, ternary components, 'i', , tl; electropolymers;
Also, these rivers are ¥-ke C・re2・,.

Polymers copolymerized with acrylic acid, methacrylic acid, or maleic acid. V-type (, it is a substitute for these three types of personal f-do, -), fumaric acid, itacon, axono1 amide, acrylic butylene ester/l,, vinegar ji11
'vinyl, styrene/), ethylene oxide, acrylic acid hydroxyl A/kyl ester, acrylonitrile, ethylene, n-petile/, inf'boule/.

Examples include allyl sulfonic acid, vinyl sulfonic acid, and ste-1-norsulfonic acid.

The non-water bathable polymer obtained by copolymerizing one type or two or more of these monomers has a molecular number of 500-L.
O (, 1, 0 0 0 is preferable,
1.000 to 20.0 (more preferably 10).Salts 2 of Ko et al. include sodium salts, potassium salts, ammonium salts, and the like.

According to the present invention7. The combination of the lal component and the (bl component), considering the anticorrosion effect, is the total phosphoric acid radical exchange n, amount of component (a) (hereinafter referred to as 1 'r- POa deception!) and tb.
Total aluminum Uno/Kinpeng conversion weight of l component (hereinafter r'I'-
11 quantity J. ) is 1~1O:10~1
751 No. 1,,<,,2~. J: 1 to 4 □ 75 - It is even more preferable. Also, the blending ratio of (a; component + 1 b + component and (c + 4 component) is T of the ial component - P94 creation 1t) of the l component Table with T-A4t [Amount and weight specific force of IC + component total weight (5-j: preferably 1-10, 2-J: 1-5 is even more preferable.

When using the 1ρ1 corrosion-resistant 1F cutting of the present invention, 1-'''C, pre-b5.

Mix 11 (minutes) to match the titration ratio (5. Yoyoso 7HI
It may be L-. Yuguchi Todo uses the uninvented anti-corrosion agent 11-1, and the composition ratio of each component mentioned above, in the song, T
- If the PO4 concentration is less than 0.5 ppm, all aluminum gold
) is 0.5 pp+n or more (7, water i ++, the entire parenchyma of polyboe - eyelids are 0.2 ppnl 1. In this case, 6\addition h) is large, and it is good to have a good size L〈, and even when adding (ri small river) in water of office work Ski, there is a good +<H intervention effect. Embryo protection for the table 1) - cut ('',
If a high concentration is added at the beginning of use, the concentration of
It also has a good anti-corrosion effect, reducing the amount of rice cracking.

Furthermore, when using the metal corrosion prevention cutting of the present invention, it is necessary to particularly adjust the l-(1) of the water system to be treated.
51J food effect:! , lh is relieved 1, misfire ``111 gold 1, ・be (4 + notification 4j1.Ij stopper was used) Lru no &
;L.

general? '; 1 horizontal 111J, water or water-soluble f4
Yorufu t (-11 of the metal of the f mountain... 1. good 7) 1;
while! In the case of I, 1">l is 1"+ of the body weight in the body weight: 74' b Tank water test C"1
Month 1,'f etc.＠j4 ノlj4 :L'g 1;
;j II□-K a effect-C Al. %iJ d, A 8
明ノ4 BE ノI＋＋＋＋ n・++／、'l L
F agent t; Il, 7 /7', , , rv 11,1
41-j 9J) rito i'j t'Vh, Ij stop 4s 1ib, <also b l---(Iru.

Tochi, 1: long 1. ), and 03 Corrosion of metals J self I-blind l) kr, 1 history Nogawa 2 (n: trigram;, ljI: transparent! IF]-i, power) p, >@2'7 Shiri, 1jlj
7; The danger of taking 1 and 0- in j is also good.

jJ'-i (2, -1\'jA Jlσ) gold 1. 1 food for cranes: 1 (Ij i [agent i; l-1iL, phosphoric acid-based corrosion 1-pot cut (compared to ζ, ftJ'1l is effective even at 1-l' -PO4 concentration) - Because of J, there is a danger that a red tide will occur. Floor protection 11 - cut fd, I poor V, I'J gold k O)
#4:4J1)) +I-= 1+'), 1 same tyo,
RIDA I-D salt 9aj, +E') 7IW +'
= Force+, M match 7 O't tM 4+'@,
, lu M J-+tX, M, nitrous acid JjA,
QJ4.

Triasore people t4. Mercanori 1 Benz Chiasole Sword 1, R-Zoshiri, ・'Kakufunto and Suitable Night: 1
74 can also be used + iJ Noh - C ai),.

12j, t, sukonor: H1) force and t, ++<
+<++ 4i second misfire Ql f, -9j, PC meter II ro C 藺明-1J ii.

tsu' 4 no・ili i'=kawa 1 13 and Hishin 1 sashi [
1-12L, 1-1-IJ, 11-
1 dose, P118°: 3. Calci “′),・,[+t
jr, 150ppm (CacOx conversion; ff h+)
, M-alkali 1 each 11 5 (l pprn
(CaC(J+NS 3'n 14j')
+ jm element i 1 concentration 2 il
(l ppm, (Mi ('V'? -
I-4 ziplJ3-2 (10ppm
Mr. 6 Test Water L Added IU T-1 Water VFrS
';z: ((1
Rotate for days, test, 1 rei, ii + after (ha test, test ha jl
j-'ii: Find the difference (corrosion reduction fan), do this 111
6th speed 1%'(my,,,/dm', d a y
) 'c Ao-dashi 1, the effect of cutting to Kaneka's IIVl 8-defense I has been fully determined. In addition, each formulation bν was added to 21'l (a small amount of horse included, ZFjQ was used [-ta Jzudai and I
If I <'1' with the anti-IF cut) M, l +, -, the same number was applied, and the 'key' became 11. -The results are shown in the table. .

, '-5K small / ζ test saponification (from 1 bald, p1 corrosion protection straight weight of the present invention 11, , + elongation I V !>)) 5V, min g,
By using 114, synergistic 1 (2 enlightened lX
17 The effect of eating -h is 1'1.

Claims (1)

[Claims] 1 (R) Posphone is a salt other than Kinata Q, (h)
Flumin (¥! Corrosion inhibitor for metals characterized by containing a water-soluble polymer. 2. Phosphonic acid 6-1, whose salt is also a compound of 2 or more d [Claims;] Item S1 3. The corrosion inhibitor for metals according to claim 2+'y, which is a mixture of two or more aluminates or aluminum salts. 4. The corrosion inhibitor for metals according to claim 1 or 2. 4. Phosphonic acid Claim 1, wherein the weight ratio of the total phosphorus content of the salt and the total aluminum equivalent value of the aluminate or aluminum salt is 1-1°:10-1. An anti-meal agent for gold as described in any of the above □ or 3.' 5 Total phosphate radical conversion agent of phosphonic acid or its salt and total aluminum metal equivalent excretion of aluminate or aluminum salt. Corrosion of metal according to any one of claims 1 to 4, wherein the weight ratio of the total weight to the total real weight of the pre-water distribution material 12 is from 5 to 1:1 to 0. Inhibitor.