CN109065912A - A kind of coolant liquid and its application for adding new non-ionic type corrosion inhibiter - Google Patents
A kind of coolant liquid and its application for adding new non-ionic type corrosion inhibiter Download PDFInfo
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- CN109065912A CN109065912A CN201810854601.7A CN201810854601A CN109065912A CN 109065912 A CN109065912 A CN 109065912A CN 201810854601 A CN201810854601 A CN 201810854601A CN 109065912 A CN109065912 A CN 109065912A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention proposes a kind of coolant liquids for adding new non-ionic type corrosion inhibiter, it is characterized in that, being prepared by following raw material according to parts by weight: 10-20 parts of new non-ionic type corrosion inhibiter, 1-5 parts of antioxidant, alcohol 10-30 parts free, 10-15 parts of alkali or alkaline earth metal salt, 100-120 parts of deionized water；The general structure of the new non-ionic type corrosion inhibiter are as follows:The present invention can significantly reduce the conductivity of coolant liquid, and have good corrosion inhibiting ability to iron and aluminium based metal, and have good cooling effect by adding the novel non-ionic corrosion inhibiter.
Description
Technical field
The present invention relates to a kind of chemical mixtures, and in particular to a kind of coolant liquid for adding new non-ionic type corrosion inhibiter.
Background technique
Under normal circumstances, fuel cell is as having structure made of multiple monocells and partition as power generation unit are laminated
Battery pile constitute.Fuel cell pack by multilayer battery (membrane-electrode assembly, sealing ring and separating plate) and be configured at battery
Two terminal parts collector plate, insulation board and end plate and be made.In so-formed fuel cell pack, fuel, air and cold
But the reactants such as water pass through manifold via each flow path, and generate electrochemical reaction, thus produce electricity.
Using this electrochemical reaction come when producing electricity, due to the incidentally heat production from battery pile, in order to cool down the electricity
Chi Dui and be inserted into coldplate on every several batteries.Since the coolant liquid of fuel cell is recycled in the inside of battery pile and cools down electricity
Chi Dui, if therefore coolant liquid conductivity it is high, the electricity generated by battery pile power consumption towards the flowing of the side of coolant liquid causes
Electricity reduces.Also, when inoperative, coolant liquid also reduces the temperature of surrounding, has under the conditions of zubzero temperature using possible
In the case where property, there is following worry: being frozen in pure water, cause the fuel such as coldplate breakage because of the volume expansion of coolant liquid
The battery performance of battery is impaired.On the other hand, the deionization with regard to more being used in fuel cell system cooling water initial development phase
For water, although resistance is high, electrical insulating property and cooling performance are outstanding, have the shortcomings that be frozen under 0 DEG C of following temperature, and
There is the problem of cold start-up of fuel cell car and be easy contaminated by the ionic species in fuel cell system and make electric exhausted
The problem of impatient play of edge declines.In particular, fuel cell car protects fuel cell system with cooling water to prevent the fuel
Battery is by effect of leakage, and Danger Electric shock risk caused by preventing because of electric leakage, should hold outstanding non-conductive of electrical insulating property, and
It should not also be freezed under -30 DEG C of following temperature, in winter or severe cold area can also be cold-started.
Because where this problem, winter is not frozen and the concern of cooling water of fuel cell that electrical insulating property is outstanding by
Cumulative more, above-mentioned cooling water is applicable in be used for the main base matter i.e. monoethylene glycol of the cooling water of internal combustion engine, monopropylene glycol in the past
The mixed solution of equal alkylidenes glycols and water.In the presence of the glycol as the main base matter for being used in fuel cell coolant liquid
The problem of class is oxidized and generates ionic substance, conductivity is caused to rise, therefore add non-ionic corrosion inhibiter and prevent the spring
What flower bud was oxidized has the demand property of antioxidant gradually to be shown.
Summary of the invention
In order to solve the above technical problems, the present invention provide it is a kind of add new non-ionic type corrosion inhibiter coolant liquid and
It is applied, it is intended that a kind of coolant liquid for adding new non-ionic type corrosion inhibiter is provided, by adding novel nonionic
Type corrosion inhibiter can significantly reduce the conductivity of coolant liquid, and have good corrosion inhibiting ability to iron and aluminium based metal, and have very
Good cooling effect.
The present invention provides a kind of coolant liquid for adding new non-ionic type corrosion inhibiter, by following raw material according to parts by weight
It is prepared: 10-20 parts of new non-ionic type corrosion inhibiter, 1-5 parts of antioxidant, alcohol 10-30 parts free, alkali or alkaline earth metal
10-15 parts of salt, 100-120 parts of deionized water；
The general structure of the new non-ionic type corrosion inhibiter are as follows:
Wherein, lignin is lignin molecule chain, R=hydrogen, halogen, C1-C20Linear or branched alkyl group, C2-C20Straight chain or
Branched-chain alkenyl, C2-C20Linear chain or branched chain alkynyl, C1-C20Linear chain or branched chain miscellaneous alkyl, C2-C20Linear chain or branched chain miscellaneous thiazolinyl, C2-
C20The miscellaneous alkynyl of linear chain or branched chain, C3-C20Linear chain or branched chain naphthenic base, C2-C20Heterocyclylalkyl, C2-C20Linear or branched alkyl group carboxylic
Base, C2-C20Linear or branched alkyl group formamido, C2-C20Linear or branched alkyl group imino group, C1-C20Linear or branched alkyl group
Sulfonic group, C1-C20Linear or branched alkyl group itrile group.
As further improvement of the invention, it is prepared by following raw material according to parts by weight: new non-ionic type inhibition
12-17 parts of agent, 2-4 parts of antioxidant, alcohol 15-25 parts free, 12-14 parts of alkali or alkaline earth metal salt, deionized water 105-115
Part.
As further improvement of the invention, it is prepared by following raw material according to parts by weight: new non-ionic type inhibition
15 parts of agent, 3 parts of antioxidant, 20 parts of free alcohol, 13 parts of alkali or alkaline earth metal salt, 110 parts of deionized water.
As further improvement of the invention, antioxidant is selected from diphenylamines, p-phenylenediamine, dihydroquinoline, three monooctyl esters, three last of the ten Heavenly stems
One or more of ester, three (Lauryl Alcohol) esters and three (16 carbon alcohol) esters.
It is improved as of the invention further, free alcohol is selected from ethylene glycol, diethylene glycol (DEG), propylene glycol, a contracting propylene glycol, three sweet
Alcohol, tetraethylene glycol, five glycol, hexaethylene glycol, dipropylene glycol, tripropylene glycol, three contracting four propylene glycol, four contracting five propylene glycol,
One or more of five six propylene glycol of contracting, monoethylene glycol or monopropylene glycol.
As further improvement of the invention, alkali or alkaline earth metal salt is selected from alkali metal lithium, sodium, potassium or alkaline-earth metal
One or more of the salt that magnesium, calcium, barium and acetic acid, propionic acid, succinic acid, lauric acid, maleic acid are formed.
As further improvement of the invention, new non-ionic type corrosion inhibiter is prepared in accordance with the following methods:
Step 1: parahydroxyben-zaldehyde and lignin are mixed, ice bath stirring, thionyl chloride is added dropwise, reacts 2h, filters,
Ethyl alcohol washs solid repeatedly, obtains reaction intermediate I, intermediate I:
Step 2: intermediate I is mixed with 1- chlorethanol, triethylamine, 2-4h is reacted at room temperature, column chromatography chromatogram is isolated
Intermediate II, the structural formula of intermediate II are as follows:
Step 3: intermediate II is mixed with lauric acid, catalyst, heating stirring reacts 4-6h, filters, and ethyl alcohol is washed repeatedly
Solid is washed, product new non-ionic type corrosion inhibiter is obtained.
As further improvement of the invention, catalyst is selected from N, N- dimethyl cyclohexyl amine, bis- (2- dimethylaminoethyls)
Ether, N, N, N', N'- tetramethyl Alkylenediamine, triethylamine, N, N- dimethyl benzylamine, N-ethylmorpholine, NMM, N, N '-diethyl
One or more of base piperazine.
It is further improved as of the invention, in step 3, heating temperature is 70-90 DEG C.
The present invention further protects the coolant liquid of above-mentioned addition new non-ionic type corrosion inhibiter a kind of in a fuel cell
Using.
The invention has the following beneficial effects:
1. the present invention is prepared for a kind of novel non-ionic corrosion inhibiter, raw material sources are extensive, and production cost is low, prepare work
Skill is simple, and can significantly reduce the conductivity of coolant liquid, and has good corrosion inhibiting ability to iron and aluminium based metal；
2. coolant liquid reserve alkalinity of the invention is greater than 3, there is good cooling effect, while metal will not be made rotten
Erosion.
Detailed description of the invention
Fig. 1 is the preparation technology figure of new non-ionic type corrosion inhibiter.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, the embodiment described is the embodiment of part of representative of the invention, rather than whole embodiments, this field are general
Other all embodiments obtained belong to protection of the invention to logical technical staff without making creative work
Range.
A kind of coolant liquid for adding new non-ionic type corrosion inhibiter of embodiment 1
Raw material composition: 10 parts of new non-ionic type corrosion inhibiter, 1 part of p-phenylenediamine, 10 parts of tripropylene glycol, sodium acetate 10
Part, 100 parts of deionized water；
The general structure of the new non-ionic type corrosion inhibiter are as follows:Wherein,
Lignin is lignin molecule chain, R=hydrogen, halogen, C1-C20Linear or branched alkyl group, C2-C20Linear chain or branched chain alkenyl, C2-C20
Linear chain or branched chain alkynyl, C1-C20Linear chain or branched chain miscellaneous alkyl, C2-C20Linear chain or branched chain miscellaneous thiazolinyl, C2-C20Linear chain or branched chain is miscellaneous
Alkynyl, C3-C20Linear chain or branched chain naphthenic base, C2-C20Heterocyclylalkyl, C2-C20Linear or branched alkyl group carboxyl, C2-C20Straight chain or
Branched alkyl formamido, C2-C20Linear or branched alkyl group imino group, C1-C20Linear or branched alkyl group sulfonic group, C1-C20Directly
Chain or branched alkyl itrile group.
The preparation of new non-ionic type corrosion inhibiter:
Step 1: parahydroxyben-zaldehyde and lignin are mixed, ice bath stirring, thionyl chloride is added dropwise, reacts 2h, filters,
Ethyl alcohol washs solid repeatedly, obtains reaction intermediate I, intermediate I:
Reaction equation:
Step 2: intermediate I is mixed with 1- chlorethanol, triethylamine, 2h is reacted at room temperature, during column chromatography chromatogram is isolated
Mesosome II, the structural formula of intermediate II are as follows:
Reaction equation:
Step 3: intermediate II is mixed with lauric acid, catalyst, being heated to temperature is 70 DEG C, is stirred to react 4h, is taken out
Filter, ethyl alcohol wash solid repeatedly, obtain product new non-ionic type corrosion inhibiter.
Reaction equation:
The novel non-ionic corrosion inhibiter of preparation is subjected to FTIR detection after separating-purifying, it is as a result as follows: 3238-
3540cm-1For O-H stretching vibration absworption peak, 2952cm-1For the asymmetric stretching vibration absworption peak of methylene, 2835cm-1For methylene
Base symmetrical stretching vibration absorption peak, 1650cm-1For C=O stretching vibration absworption peak, 1576cm-1And 1477cm-1For the bone of phenyl ring
Frame vibration absorption peak, 1400cm-1And 1306cm-1For O-H in-plane bending vibration absorption peak, 1047cm-1For Ar-O-C stretching vibration
Absorption peak, 965cm-1、920cm-1And 864cm-1For the hydrogen out-of-plane bending vibration absorption peak isolated on phenyl ring, 616cm-1For the face O-H
Outside sweep vibration absorption peak.
Cooling liquid and preparation method thereof: above-mentioned raw materials are made after mixing.
A kind of coolant liquid for adding new non-ionic type corrosion inhibiter of embodiment 2
Raw material composition: 20 parts of new non-ionic type corrosion inhibiter, 5 parts of dihydroquinoline, 10 parts of hexaethylene glycol, 10 parts of ethylene glycol, one
10 parts of contracting propylene glycol, 15 parts of Potassium Suceinate, 120 parts of deionized water；
The preparation of new non-ionic type corrosion inhibiter:
Step 1: parahydroxyben-zaldehyde and lignin are mixed, ice bath stirring, thionyl chloride is added dropwise, reacts 2h, filters,
Ethyl alcohol washs solid repeatedly, obtains reaction intermediate I；
Step 2: intermediate I is mixed with 1- chlorethanol, triethylamine, 4h is reacted at room temperature, during column chromatography chromatogram is isolated
Mesosome II；
Step 3: intermediate II is mixed with lauric acid, catalyst, being heated to temperature is 90 DEG C, is stirred to react 6h, is taken out
Filter, ethyl alcohol wash solid repeatedly, obtain product new non-ionic type corrosion inhibiter.
Cooling liquid and preparation method thereof: above-mentioned raw materials are made after mixing.
A kind of coolant liquid for adding new non-ionic type corrosion inhibiter of embodiment 3
Raw material composition: 17 parts of new non-ionic type corrosion inhibiter, 4 parts of three last of the ten Heavenly stems ester, three contracting 25 parts of four propylene glycol, Magnesium dilaurate 14
Part, 115 parts of deionized water；
The preparation of new non-ionic type corrosion inhibiter:
Step 1: parahydroxyben-zaldehyde and lignin are mixed, ice bath stirring, thionyl chloride is added dropwise, reacts 2h, filters,
Ethyl alcohol washs solid repeatedly, obtains reaction intermediate I；
Step 2: intermediate I is mixed with 1- chlorethanol, triethylamine, 3h is reacted at room temperature, during column chromatography chromatogram is isolated
Mesosome II；
Step 3: intermediate II is mixed with lauric acid, catalyst, being heated to temperature is 80 DEG C, is stirred to react 5h, is taken out
Filter, ethyl alcohol wash solid repeatedly, obtain product new non-ionic type corrosion inhibiter.
Cooling liquid and preparation method thereof: above-mentioned raw materials are made after mixing.
A kind of coolant liquid for adding new non-ionic type corrosion inhibiter of embodiment 4
Raw material composition: 12 parts of new non-ionic type corrosion inhibiter, three 2 parts of (Lauryl Alcohol) esters, 15 parts of free alcohol, sodium maleate
12 parts, 105 parts of deionized water；
Cooling liquid and preparation method thereof: above-mentioned raw materials are made after mixing.
A kind of coolant liquid for adding new non-ionic type corrosion inhibiter of embodiment 5
Raw material composition: 15 parts of new non-ionic type corrosion inhibiter, three (16 carbon alcohol) 3 parts of esters, 10 parts of diethylene glycol (DEG), propylene glycol 10
Part, 13 parts of potassium laurate, 110 parts of deionized water；
Cooling liquid and preparation method thereof: above-mentioned raw materials are made after mixing.
Reference examples 1 are prepared according to a kind of method of patent ZL 201610496539.X " environmental protection coolant liquid "
It is a kind of environmental protection coolant liquid, by the propylene glycol of 47kg, the glycerine of 23kg, the fatty acid of 2kg, 0.7kg sorbic acid
100kg coolant liquid is made in potassium, the sodium hydroxide of 1.2kg, the defoaming agent of 0.1kg and 26kg deionized water after mixing.
Reference examples 2 are prepared according to the method for patent ZL 200910117101.6 " energy-saving cooling fluid " a kind of
It takes ethylene glycol 94kg, decanedioic acid 1kg, caprylic acid 1.2kg to put into modulation kettle, opens and stir and be warming up to 85~95
DEG C, keep the temperature half an hour；Potassium hydroxide 1kg and deionized water 2.2kg is taken to prepare in the lower investment modulation kettle of potassium hydroxide solution stirring,
It is eventually adding methenamine 0.6kg to cool down after mixing evenly to obtain the final product, coolant liquid pH value 7.8~8.2.
1 performance test of test case
Coolant liquid made from 1-5 of the embodiment of the present invention and reference examples 1-2 is tested for the property, the results are shown in Table 1.
1 the performance test results of table
Note: the standard of CAS112-2005, coolant liquid freezing point are not higher than -35 DEG C, and boiling point is not less than 107 DEG C, pH=7.5-
11.0, on organic coating without influence, in glassware metal erosion SH008588 ± 2 DEG C 336h, copper, flavones, steel, iron, ± 10；
Tin, aluminium, ± 30.
As seen from the above table, coolant liquid prepared by the present invention is far below standard requirements to corrosion of metal, is better than the prior art,
Reserve alkalinity is all larger than 3, and comprehensive performance is superior.
Those skilled in the art is not under conditions of departing from the spirit and scope of the present invention that claims determine, also
Various modifications can be carried out to the above content.Therefore the scope of the present invention is not limited in above explanation, but by
The range of claims determines.
Claims (10)
1. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter, which is characterized in that prepared by following raw material according to parts by weight
It forms: 10-20 parts of new non-ionic type corrosion inhibiter, 1-5 parts of antioxidant, alcohol 10-30 parts free, alkali or alkaline earth metal salt
10-15 parts, 100-120 parts of deionized water；
The general structure of the new non-ionic type corrosion inhibiter are as follows:Wherein, lignin
For lignin molecule chain, R=hydrogen, halogen, C1-C20Linear or branched alkyl group, C2-C20Linear chain or branched chain alkenyl, C2-C20Straight chain or
Branch alkynyl, C1-C20Linear chain or branched chain miscellaneous alkyl, C2-C20Linear chain or branched chain miscellaneous thiazolinyl, C2-C20The miscellaneous alkynyl of linear chain or branched chain,
C3-C20Linear chain or branched chain naphthenic base, C2-C20Heterocyclylalkyl, C2-C20Linear or branched alkyl group carboxyl, C2-C20Linear chain or branched chain alkane
Base formamido, C2-C20Linear or branched alkyl group imino group, C1-C20Linear or branched alkyl group sulfonic group, C1-C20Straight chain or branch
Alkyl group itrile group.
2. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 1, which is characterized in that by following original
Material is prepared according to parts by weight: 12-17 parts of new non-ionic type corrosion inhibiter, 2-4 parts of antioxidant, alcohol 15-25 parts free, alkali gold
Category or 12-14 parts of alkali salt, 105-115 parts of deionized water.
3. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 1, which is characterized in that by following original
Material is prepared according to parts by weight: 15 parts of new non-ionic type corrosion inhibiter, 3 parts of antioxidant, 20 parts of free alcohol, alkali metal or alkaline earth
13 parts of metal salt, 110 parts of deionized water.
4. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 1, which is characterized in that the antioxygen
Agent is selected from diphenylamines, p-phenylenediamine, dihydroquinoline, three monooctyl esters, three last of the ten Heavenly stems esters, three (Lauryl Alcohol) esters and three (16 carbon alcohol) esters
One or more.
5. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 1, which is characterized in that the freedom
Alcohol is selected from ethylene glycol, diethylene glycol (DEG), propylene glycol, a contracting propylene glycol, triethylene glycol, tetraethylene glycol, five glycol, hexaethylene glycol, a contracting dipropyl two
In alcohol, tripropylene glycol, three four propylene glycol of contracting, four five propylene glycol of contracting, five six propylene glycol of contracting, monoethylene glycol or monopropylene glycol
It is one or more of.
6. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 1, which is characterized in that the alkali gold
Belong to or alkali salt be selected from alkali metal lithium, sodium, potassium or alkaline-earth metal magnesium, calcium, barium and acetic acid, propionic acid, succinic acid, lauric acid,
One or more of the salt that maleic acid is formed.
7. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 1, which is characterized in that described novel
Non-ionic corrosion inhibiter is prepared in accordance with the following methods:
Step 1: parahydroxyben-zaldehyde and lignin are mixed, ice bath stirring, thionyl chloride is added dropwise, reacts 2h, filtering, ethyl alcohol
Solid is washed repeatedly, obtains reaction intermediate I, intermediate I:
Step 2: intermediate I is mixed with 1- chlorethanol, triethylamine, 2-4h, the isolated centre of column chromatography chromatogram are reacted at room temperature
Body II, the structural formula of intermediate II are as follows:
Step 3: intermediate II is mixed with lauric acid, catalyst, heating stirring reacts 4-6h, filters, and ethyl alcohol washs solid repeatedly
Body obtains product new non-ionic type corrosion inhibiter.
8. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 7, which is characterized in that the catalysis
Agent is selected from N, N- dimethyl cyclohexyl amine, bis- (2- dimethylaminoethyl) ethers, N, N, N', N'- tetramethyl Alkylenediamine, three second
Amine, N, N- dimethyl benzylamine, N-ethylmorpholine, NMM, N, one or more of N '-diethyl piperazine.
9. a kind of coolant liquid for adding new non-ionic type corrosion inhibiter according to claim 7, which is characterized in that the step
In three, heating temperature is 70-90 DEG C.
10. according to claim 1 described in -9 any claims it is a kind of add new non-ionic type corrosion inhibiter coolant liquid firing
Expect the application in battery.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376050A (en) * | 2020-11-15 | 2021-02-19 | 西安热工研究院有限公司 | Carbon steel and aluminum corrosion inhibitor |
| EP4177317A1 (en) | 2021-11-05 | 2023-05-10 | AloxX GmbH | Use of a corrosion inhibition composition and method for inhibition of corrosion of metals or metal alloys |
-
2018
- 2018-07-30 CN CN201810854601.7A patent/CN109065912A/en active Pending
Non-Patent Citations (1)
| Title |
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| 奚强等: "氯化亚砜在有机合成中的应用(Ⅰ)氯化亚砜使有机物氯化", 《荆州师专学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376050A (en) * | 2020-11-15 | 2021-02-19 | 西安热工研究院有限公司 | Carbon steel and aluminum corrosion inhibitor |
| EP4177317A1 (en) | 2021-11-05 | 2023-05-10 | AloxX GmbH | Use of a corrosion inhibition composition and method for inhibition of corrosion of metals or metal alloys |
| WO2023079074A1 (en) | 2021-11-05 | 2023-05-11 | Aloxx Gmbh | Use of a corrosion inhibition composition and method for inhibition of corrosion of metals or metal alloys |
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Application publication date: 20181221 |