CN103059234A - Preparation method of black metal preservative - Google Patents
Preparation method of black metal preservative Download PDFInfo
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- CN103059234A CN103059234A CN2013100223128A CN201310022312A CN103059234A CN 103059234 A CN103059234 A CN 103059234A CN 2013100223128 A CN2013100223128 A CN 2013100223128A CN 201310022312 A CN201310022312 A CN 201310022312A CN 103059234 A CN103059234 A CN 103059234A
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- China
- Prior art keywords
- ferrous metal
- chain alkenyl
- corrosion protection
- alkenyl ether
- protection agent
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Abstract
The invention discloses a preparation method of a black metal preservative. The black metal preservative is prepared by adopting maleic anhydride, acrylic acid, diacetone-acryloamide, oxyalkylene and a straight chain alkenyl ether polymerized monomer of which the average addition mole number is 8-20, and polymerizing according to the free group polymerization reaction principle under the catalysis of an oil soluble oxide, wherein the mole percentage ratio of the maleic anhydride, the acrylic acid, the diacetone-acryloamide, the oxyalkylene to the straight chain alkenyl ether polymerized monomer is (50-70):(8-25):(18-36):(2-10). The prepared copolymer is subjected to alkali hydrolysis so as to obtain the alkali metal salt preservative. The black metal preservative copolymer is applied to corrosion prevention of black metals, and the effects that the corrosion rate of the black metals is greatly reduced and technical indexes such as mechanical strength and the like are not weakened are achieved. The use amount of the black metal preservative to achieve the desired effect is generally 0.5-1.5% of the mass of a corrosive acid liquid.
Description
Technical field
The present invention relates to a kind of ferrous metal corrosion protection agent.Specifically, the present invention is a kind of for ferrous metal corrosion protection agent polymkeric substance, this ferrous metal corrosion protection agent forms molecular film by adsorption at ferrous metal surface, stop hydrogen ion to contact with the metallic surface, electron exchange between blocking-up hydrogen ion and atoms metal, thus acidic liquid significantly reduced to the corrosion of ferrous metal.
Background technology
Metallic corrosion is the difficult problem that every profession and trade exists always, and the strong acid production environments such as particularly metal cleaning, plug removal in oil and water well more very.People wish to obtain a kind of anticolodal very much all the time, and this anticolodal can protect metal to exempt from the acidic medium corrosion.Synthetic or selected various chemical substances in order to address this problem people, such as propiolic alcohol, polyethylene polyamine, 2-picoline, formaldehyde, acetaldehyde etc.But these chemical substances can not be satisfactory to the preservative activity of metal, they or do not have sufficiently high antiseptic property, perhaps with after make some performance depreciation of metal.The objective of the invention is synthetic a kind of higher preservative efficiency that has, do not reduce the new food preservative of metal material mechanics performance simultaneously.
Summary of the invention
Find after deliberation to have the polymkeric substance of following described specific molecular structure not cause that for preventing metallic corrosion other performance such as ferrous metal mechanical strength reduces and has significant effect.
The present invention relates to a kind of ferrous metal corrosion protection agent polymkeric substance, this polymkeric substance has used MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and some straight-chain alkenyl ether to carry out polyreaction.Specifically, the multipolymer of free radical reaction is carried out in ferrous metal corrosion protection agent of the present invention by MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and straight chain oxidative chain alkene ether with 8～20 oxyalkylene group units.
The used straight chain oxyalkylene group of the present invention ether has the composition that is shown below:
R
1O(AO)nR
2
Wherein in following formula
R
1Expression C
2-5Alkenyl;
R
2Expression C
1-4Alkyl;
AO represents C
2-20Oxyalkylene group, O represention oxygen atom wherein, A represents a kind of alkyl;
N represents that the oxyalkylene group number is 8 to 20 moles, also is that the average addition mole number of oxyalkylene group is 8-20, and preferred addition mole number is 10.
Multipolymer refers to the multipolymer of the straight-chain alkenyl ether polymerization single polymerization monomer that the average addition mole number of MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and oxyalkylene group is 8-20 among the present invention, perhaps hydrolysate partially or completely.
In the above in the described straight chain oxyalkylene group ether molecular formula, by R
1The C of expression
2-5Straight-chain alkenyl comprises vinyl, propenyl, methacrylic, 1, and 1-dimethyl-2-propenyl and 3-methyl-3-butenyl etc. in these groups, preferably use allyl group or methylpropenyl.
In the above in the described straight chain oxyalkylene group ether molecular formula, the C that is represented by AO
2-20Oxyalkylene group comprises ethylene oxide, propylene oxide, oxybutylene, oxidation dodecylene, oxidation tetradecene and oxidation eicosylene etc.Preferred C wherein
2-4Oxyalkylene group such as ethylene oxide or propylene oxide.AO can comprise the oxyalkylene part of two or more types.
In the above in the described straight chain oxyalkylene group ether molecular formula, by R
2The C of expression
1-4Alkyl comprises such as methyl, ethyl, propyl group, sec.-propyl, normal-butyl, isobutyl-and the tertiary butyl.The preferential C that selects
1-2Alkyl.
The ferrous metal corrosion protection agent that ferrous metal corrosion protection agent multipolymer of the present invention and routine are traditional is compared; this sanitas can firmly be adsorbed on ferrous metal surface and form the fine and close molecular film of one deck; this layer molecular film can effectively shield hydrogen ion and contact with the metallic surface; electron exchange between blocking-up hydrogen ion and atoms metal, thus the protection metallic surface is not subjected to hydrionic attack significantly to reduce acid attack liquid to the corrosion of ferrous metal in the long time period.
Ferrous metal corrosion protection agent multipolymer of the present invention be the average addition mole number of MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and the oxyalkylene group straight-chain alkenyl ether polymerization single polymerization monomer that is 8-20 under the effect of oil soluble peroxide catalyzed, prepare by the polymerization of radical polymerization polymerization reaction mechanism.Wherein, the molar percentage between MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and straight-chain alkenyl ether polymerization single polymerization monomer is 50～70: 8～25: 18～36: 2～10, and wherein preferred proportion is 60: 15: 20: 5.The ferrous metal corrosion protection agent is the hydrolysate of multipolymer, is generally an alkali metal salt such as sodium salt or sylvite.
Ferrous metal corrosion protection agent multipolymer of the present invention has been applied in the ferrous metal corrosion protection engineering, has realized the effect that the ferrous metal corrosion rate is significantly descended and do not reduce the technical indicators such as mechanical strength.
The ferrous metal corrosion protection agent consumption that reaches the desired effect of the present invention is generally the 0.5-1.5% of corrodibility acid solution quality, and the preferred mass mark is 0.7-1.0%.
Traditional ferrous metal corrosion protection agent such as formaldehyde, glutaraldehyde, propiolic alcohol, hexamethylenetetramine etc. can mix use with sanitas of the present invention.These sanitass can be first mix after with water dissolution with sanitas of the present invention and use.
Ferrous metal corrosion protection agent of the present invention is applicable to the materials such as ferrous metal such as straight carbon steel, high carbon steel, stainless steel, high-temperature alloy steel, tool steel.
Embodiment
1, ferrous metal corrosion protection agent Preparation Example
Each component recited above is packed in the reactor, and this reactor is equipped with condenser, nitrogen input tube, thermometer and agitator.Then under nitrogen atmosphere temperature is increased to 90-100 ℃, 2-4h carries out copolyreaction continuously under nitrogen protection.
After reaction finished, underpressure distillation with toluene distillation out obtained the light yellow viscous liquid multipolymer under 100 ℃ of conditions.
The multipolymer that obtains in the 5%NaOH aqueous solution, is hydrolyzed 1-1.5h under 70 ℃ of temperature, obtains the sanitas hydrolyzate.
2, anticorrosion Application Example
The high carbon steel sample is carried out corrosion test, result such as table 1.
Table 1
Claims (3)
1. the preparation method of a ferrous metal corrosion protection agent, it is characterized in that, this sanitas be by MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and polymerization single polymerization monomers such as straight-chain alkenyl ether with specific addition mole number oxyalkylene group under the effect of oil soluble peroxide catalyzed, press radical polymerization mechanism synthetic, wherein, the molar percentage between MALEIC ANHYDRIDE, vinylformic acid, diacetone-acryloamide(DAA) and straight-chain alkenyl ether polymerization single polymerization monomer is 50～70: 8～25: 18～36: 2～10.
2. the ferrous metal corrosion protection agent of claim 1, its synthesis step is: be equipped with top described each component adding in the reactor of condenser, nitrogen input tube, thermometer and agitator (1); (2) under nitrogen atmosphere temperature is increased to 90-100 ℃, 2-4h carries out copolyreaction continuously; (3) after reaction finished, underpressure distillation with toluene distillation out obtained the light yellow viscous liquid multipolymer under 100 ℃ of conditions; (4) multipolymer that obtains is carried out alkaline hydrolysis and obtain the ferrous metal corrosion protection agent.
3. the ferrous metal corrosion protection agent of claim 1, straight-chain alkenyl ether wherein are the straight-chain alkenyl ether that is shown below:
R
1O(AO)
nR
2
Wherein in following formula
R
1Expression C
2-5Alkenyl;
R
2Expression C
1-4Alkyl;
AO represents C
2-20Oxyalkylene group, O represention oxygen atom wherein, A represents a kind of alkyl;
N represents that the average addition mole number of oxyalkylene group is 8-20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100223128A CN103059234A (en) | 2013-01-07 | 2013-01-07 | Preparation method of black metal preservative |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100223128A CN103059234A (en) | 2013-01-07 | 2013-01-07 | Preparation method of black metal preservative |
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|---|---|
| CN103059234A true CN103059234A (en) | 2013-04-24 |
Family
ID=48102154
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|---|---|---|---|
| CN2013100223128A Pending CN103059234A (en) | 2013-01-07 | 2013-01-07 | Preparation method of black metal preservative |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307592A (en) * | 1998-07-24 | 2001-08-08 | 罗姆和哈斯公司 | Aqueous composition |
| CN100999640A (en) * | 2006-12-19 | 2007-07-18 | 东莞市东阳光电容器有限公司 | Non-solvent type alumincum for air conditioner |
| CN101111572A (en) * | 2005-01-28 | 2008-01-23 | 巴斯夫股份有限公司 | Method for applying integrated pre-treatment layers containing dicarboxylic acid olefin copolymers to metallic surfaces |
| CN102086063A (en) * | 2010-12-21 | 2011-06-08 | 东南大学 | Green environment-friendly polyether carboxylic acid ester corrosion inhibition and scale inhibitor and preparation method thereof |
| CN102532436A (en) * | 2011-12-23 | 2012-07-04 | 江苏创基新材料有限公司 | Method for preparing single-component room-temperature crosslinked waterborne fluorine-containing coating |
-
2013
- 2013-01-07 CN CN2013100223128A patent/CN103059234A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307592A (en) * | 1998-07-24 | 2001-08-08 | 罗姆和哈斯公司 | Aqueous composition |
| CN101111572A (en) * | 2005-01-28 | 2008-01-23 | 巴斯夫股份有限公司 | Method for applying integrated pre-treatment layers containing dicarboxylic acid olefin copolymers to metallic surfaces |
| CN100999640A (en) * | 2006-12-19 | 2007-07-18 | 东莞市东阳光电容器有限公司 | Non-solvent type alumincum for air conditioner |
| CN102086063A (en) * | 2010-12-21 | 2011-06-08 | 东南大学 | Green environment-friendly polyether carboxylic acid ester corrosion inhibition and scale inhibitor and preparation method thereof |
| CN102532436A (en) * | 2011-12-23 | 2012-07-04 | 江苏创基新材料有限公司 | Method for preparing single-component room-temperature crosslinked waterborne fluorine-containing coating |
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Application publication date: 20130424 |