CN108301001B - Hard film aqueous antirust agent and application thereof - Google Patents
Hard film aqueous antirust agent and application thereof Download PDFInfo
- Publication number
- CN108301001B CN108301001B CN201810073139.7A CN201810073139A CN108301001B CN 108301001 B CN108301001 B CN 108301001B CN 201810073139 A CN201810073139 A CN 201810073139A CN 108301001 B CN108301001 B CN 108301001B
- Authority
- CN
- China
- Prior art keywords
- parts
- workpiece
- agent
- solution
- antirust agent
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention belongs to the technical field of metal rust prevention, and particularly relates to a hard film aqueous rust inhibitor and an application thereof, wherein the hard film aqueous rust inhibitor comprises the following components in parts by mass: 60-90 parts of deionized water, 10-20 parts of antirust agent, 3-5 parts of film forming agent, 5.5-8 parts of emulsifier, 1-2 parts of defoaming agent, 3-5 parts of dispersing agent, 3-5 parts of penetrating agent, 1-3 parts of thixotropic agent, pH regulator and 5-10 parts of resin, wherein the penetrating agent comprises any one or more of sodium secondary alkyl sulfonate, alkali-resistant penetrating agent AEP98 and alkali-resistant penetrating agent OEP-70, and the aqueous antirust agent can increase the adhesive force between the aqueous antirust agent and a base material and prolong the corrosion prevention time.
Description
Technical Field
The invention belongs to the technical field of metal rust prevention, and particularly relates to a hard film aqueous rust inhibitor and application thereof.
Background
For short-term preservation, most rust preventive oils are used. China antirust oil basically takes gasoline, kerosene or mechanical oil as a solvent, is a product obtained by fractionating petroleum, and cannot remove aromatic hydrocarbons in the petroleum, so that the gasoline, the kerosene and the mechanical oil all contain aromatic hydrocarbons. In recent years, water-soluble rust inhibitors have been developed, but the conventional water-soluble rust inhibitors are used only on the surface of a plating layer (such as zinc plating or nickel plating), and the adhesion between the water-soluble rust inhibitors and the plating layer is low, so that the actual rust-inhibiting effect is poor.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a hard film aqueous rust inhibitor and use thereof, which can increase the adhesion between the aqueous rust inhibitor and the base material and prolong the corrosion prevention time.
The invention provides a hard film aqueous antirust agent which comprises the following raw materials in parts by mass:
60-90 parts of deionized water, 10-20 parts of antirust agent, 3-5 parts of film forming agent, 5.5-8 parts of emulsifier, 1-2 parts of defoaming agent, 3-5 parts of dispersing agent, 3-5 parts of penetrating agent, 1-3 parts of thixotropic agent, pH regulator and 5-10 parts of resin, wherein the film forming agent comprises one or more of water-based vaseline and water-based lanolin, and the penetrating agent comprises one or more of sodium secondary alkyl sulfonate, alkali-resistant penetrating agent AEP98 and alkali-resistant penetrating agent OEP-70.
Wherein, the antirust agent comprises one or more of low-base-number calcium petroleum sulfonate, medium-base-number calcium petroleum sulfonate, high-base-number calcium petroleum sulfonate and sodium petroleum sulfonate.
Wherein the film forming agent comprises one or more of water-based vaseline and water-based lanolin.
Wherein the emulsifier comprises one or more of tween 20, tween 40, tween 60, tween 80, span 20, span 40, span 60, span 80 and triethanolamine oleate.
Wherein the defoaming agent is polydimethylsiloxane.
Wherein the dispersant comprises one or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, triethanolamine, liquid paraffin, polyethylene glycol, sodium oleate, sodium hexametaphosphate, sodium lignosulfonate and calcium lignosulfonate.
Wherein, the penetrant comprises one or more of secondary alkyl sodium sulfonate, alkali-resistant penetrant AEP98 and alkali-resistant penetrant OEP-70.
Wherein, the thixotropic agent comprises any one or more of montmorillonite, attapulgite and kaolin.
Wherein the pH regulator comprises one or more of sodium carbonate and sodium bicarbonate.
Wherein the resin is water-based polyurethane resin.
The invention also provides a preparation method of the hard film water-based antirust agent, which comprises the following steps:
preparation of a solution a:
step 1: adding 40-60 parts of deionized water into a reaction kettle, heating to 80-100 ℃, adding 10-20 parts of antirust agent and 5-7 parts of emulsifier, stirring for 30-40 minutes at 5000-10000 rpm;
step 2: reducing the temperature to 40-60 ℃, adding a proper amount of pH regulator, and keeping the pH value at 7-9;
and step 3: adding 3-5 parts of dispersing agent, 3-5 parts of penetrating agent and 1-3 parts of thixotropic agent into the emulsion obtained in the step 2, and stirring for 20-30 minutes at 3000-;
b, preparation of liquid:
step 1: dissolving 3-5 parts of film forming agent into liquid at 45-60 ℃, then adding 20-30 parts of boiling water and 0.5-1 part of emulsifier, stirring for 20-30 minutes at 3000 revolutions per minute;
step 2: adding 5-10 parts of waterborne polyurethane resin and 1-2 parts of defoaming agent, homogenizing at 5000-10000rpm for 10-40min until uniform, and obtaining the solution b.
The invention also provides the application of the hard film aqueous antirust agent, wherein the workpiece is soaked in the solution a and dried at the temperature of 60-80 ℃, and the dried workpiece is soaked in the solution b and dried at the temperature of 80-100 ℃.
By the scheme, the invention at least has the following advantages:
1. the penetrant and the film-forming agent are added into the water-based antirust agent, the adhesive force is increased by the penetrant, the antirust agent is better combined with the base material due to the existence of the penetrant and permeates into holes of the base material, and the film-forming agent forms a thin nano-scale film on the surface of the base material, so that air is isolated, and the corrosion prevention time is prolonged.
2. The water-based antirust agent can be used on the surface of a coating, the neutral salt spray resistance of the galvanized surface can reach more than 800h, the longest neutral salt spray resistance time of the current water-based antirust agent is more than 400h, and the water-based antirust agent can be used independently, and if the water-based antirust agent is used independently, the neutral salt spray resistance time reaches more than 300 h.
3. The water-based antirust agent disclosed by the invention is environment-friendly in raw materials, simple in preparation process and suitable for industrial production.
4. The aqueous antirust agent has wide application range, is basically suitable for the surfaces of various iron-based, aluminum-based and copper-based materials, and can be used for the surfaces of various coatings.
5. The aqueous antirust agent disclosed by the invention has the advantages that the film formed by curing the film forming agent and the resin is transparent, the hand feeling is dry after the antirust agent is used, the antirust agent is not sticky or greasy, the appearance of a base material is not influenced, and the use of the base material is not influenced. .
6. The water-based antirust agent can be diluted for use, the suggested proportion is 1:10, and the neutral salt spray resistant time can be ensured to be more than 48 h.
7. After the workpiece passes through the liquid a, micromolecules in the components permeate into micropores of the workpiece, and the micropores on the surface of the workpiece are sealed by crystals after the workpiece is dried. Then the metal workpiece is immersed into the liquid b, a layer is protected again after the surface film is formed, and the small molecular crystals of the liquid a penetrating into the micropores on the surface of the metal workpiece can also provide anchor points for the resin coating of the liquid b, so that the liquid b resin can more tightly and more firmly grasp the metal surface, and the adhesive force can be greatly improved.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1
The preparation method of the hard film water-based antirust agent comprises the following steps:
preparation of a solution a:
step 1: adding 50 parts of deionized water into a reaction kettle, heating to 80 ℃, adding 12 parts of medium-alkali petroleum calcium sulfonate and 6 parts of tween 60 at 8000rpm, and stirring for 35 minutes;
step 2: reducing the temperature to 50 ℃, adding a proper amount of pH regulator, and keeping the pH value at 7;
and step 3: adding 3 parts of sodium dodecyl benzene sulfonate, 5 parts of alkali-resistant penetrating agent AEP98 and 1 part of kaolin into the emulsion obtained in the step 2, and stirring for 30 minutes at 8000 revolutions per minute to obtain solution a;
b, preparation of liquid:
step 1: dissolving 3 parts of water-based vaseline into liquid at 50 ℃, adding 20 parts of boiling water and 0.5 part of Tween 60 at 5000rpm, and stirring for 20 minutes;
step 2: adding 7 parts of waterborne polyurethane resin and 1 part of polydimethylsiloxane, and homogenizing at 10000rpm for 20min until the mixture is uniform to obtain solution b.
And (3) testing:
treating the common untreated screw sleeve with the prepared water-based antirust agent, firstly removing oil and rust of a workpiece, cleaning the workpiece, drying the workpiece in an oven at 80 ℃, then soaking the workpiece in a solution a for 30 seconds, taking out the workpiece, drying the workpiece at 80 ℃, soaking the dried workpiece in a solution b for 30 seconds, taking out the workpiece, and drying the workpiece at 80 ℃. And (4) placing the treated workpiece into a salt spray machine for testing, and testing to obtain that the neutral salt spray resistance time is 400 h.
And (3) diluting the prepared aqueous antirust agent solution a and solution b according to a ratio of 1:5 respectively, treating the common untreated screw sleeve according to the method, and testing to obtain the neutral salt spray resistance time of 120 h.
And (3) diluting the prepared aqueous antirust agent solution a and solution b according to a ratio of 1:10 respectively, treating the common untreated screw sleeve according to the method, and testing to obtain that the neutral salt spray resistance time is 56 h.
Salt spray test standard: national standard GB6458-86 neutral salt spray test, neutral: 5% sodium chloride solution.
Example 2
The preparation method of the hard film water-based antirust agent comprises the following steps:
preparation of a solution a:
step 1: adding 45 parts of deionized water into a reaction kettle, heating to 100 ℃, adding 15 parts of low-base-number calcium petroleum sulfonate and 5 parts of tween 60, stirring at 8000rpm for 35 minutes;
step 2: reducing the temperature to 50 ℃, adding a proper amount of pH regulator, and keeping the pH value at 8;
and step 3: adding 5 parts of liquid paraffin, 3 parts of ammonium secondary alkyl sulfonate and 1 part of montmorillonite into the emulsion obtained in the step 2, stirring for 20 minutes at 10000rpm to obtain a solution a;
b, preparation of liquid:
step 1: dissolving 5 parts of water-based lanolin into liquid at 50 ℃, adding 30 parts of boiling water and 0.8 part of Tween 60 at 5000rpm, and stirring for 20 minutes;
step 2: and (3) adding 10 parts of waterborne polyurethane resin and 1 part of polydimethylsiloxane, and homogenizing at 5000rpm for 40min until the mixture is uniform to obtain a solution b.
And (3) testing:
treating the common untreated screw sleeve with the prepared water-based antirust agent, firstly removing oil and rust of a workpiece, cleaning the workpiece, drying the workpiece in an oven at 80 ℃, then soaking the workpiece in a solution a for 30 seconds, taking out the workpiece, drying the workpiece at 80 ℃, soaking the dried workpiece in a solution b for 30 seconds, taking out the workpiece, and drying the workpiece at 80 ℃. And (4) placing the treated workpiece into a salt spray machine for testing, and testing to obtain that the neutral salt spray resistance time is 360 h.
And (3) diluting the prepared aqueous antirust agent solution a and solution b according to a ratio of 1:5 respectively, treating the common untreated screw sleeve according to the method, and testing to obtain the neutral salt spray resistance time of 110 h.
And (3) diluting the prepared aqueous antirust agent solution a and solution b according to a ratio of 1:10 respectively, treating the common untreated screw sleeve according to the method, and testing to obtain that the neutral salt spray resistance time is 48 h.
Salt spray test standard: national standard GB6458-86 neutral salt spray test, neutral: 5% sodium chloride solution.
Example 3
The preparation method of the hard film water-based antirust agent comprises the following steps:
preparation of a solution a:
step 1: adding 60 parts of deionized water into a reaction kettle, heating to 100 ℃, adding 20 parts of petroleum sodium sulfonate and 7 parts of triethanolamine oleate, stirring at 5000rpm for 40 minutes;
step 2: reducing the temperature to 50 ℃, adding a proper amount of pH regulator, and keeping the pH value at 7;
and step 3: adding 4 parts of liquid paraffin, 5 parts of alkali-resistant penetrating agent OEP-70 and 2 parts of attapulgite into the emulsion obtained in the step 2, stirring at 10000rpm for 20 minutes to obtain a solution a;
b, preparation of liquid:
step 1: dissolving 5 parts of water-based lanolin into liquid at 50 ℃, adding 25 parts of boiling water and 1 part of triethanolamine oleate, stirring at 5000rpm for 20 minutes;
step 2: adding 8 parts of waterborne polyurethane resin and 1.5 parts of polydimethylsiloxane, and homogenizing at 8000rpm for 40min until uniform to obtain solution b.
And (3) testing:
treating the common untreated screw sleeve with the prepared water-based antirust agent, firstly removing oil and rust of a workpiece, cleaning the workpiece, drying the workpiece in an oven at 80 ℃, then soaking the workpiece in a solution a for 30 seconds, taking out the workpiece, drying the workpiece at 80 ℃, soaking the dried workpiece in a solution b for 30 seconds, taking out the workpiece, and drying the workpiece at 80 ℃. And (4) placing the treated workpiece into a salt spray machine for testing, and testing to obtain that the neutral salt spray resistance time is 380 h.
And (3) diluting the prepared aqueous antirust agent solution a and solution b according to a ratio of 1:5 respectively, treating the common untreated screw sleeve according to the method, and testing to obtain the neutral salt spray resistance time of 120 h.
And (3) diluting the prepared aqueous antirust agent solution a and solution b according to a ratio of 1:10 respectively, treating the common untreated screw sleeve according to the method, and testing to obtain that the neutral salt spray resistance time is 55 h.
Salt spray test standard: national standard GB6458-86 neutral salt spray test, neutral: 5% sodium chloride solution
Comparative example 1
A series of aqueous rust inhibitors were prepared by changing the following variables under the same reaction conditions as in example 1, and the obtained aqueous rust inhibitors were treated with a common untreated screw shell according to the test method in example 1, and the specific experimental results are shown in table 1.
TABLE 1
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. The preparation method of the hard film water-based antirust agent is characterized by comprising the following steps:
preparation of a solution a:
step 1: adding 50 parts of deionized water into a reaction kettle, heating to 80 ℃, adding 12 parts of medium-alkali petroleum calcium sulfonate and 6 parts of tween 60 at 8000rpm, and stirring for 35 minutes;
step 2: reducing the temperature to 50 ℃, adding a proper amount of pH regulator, and keeping the pH value at 7;
and step 3: adding 3 parts of sodium dodecyl benzene sulfonate, 5 parts of alkali-resistant penetrating agent AEP98 and 1 part of kaolin into the emulsion obtained in the step 2, and stirring for 30 minutes at 8000 revolutions per minute to obtain solution a;
b, preparation of liquid:
step 1: dissolving 3 parts of water-based vaseline into liquid at 50 ℃, adding 20 parts of boiling water and 0.5 part of Tween 60 at 5000rpm, and stirring for 20 minutes;
step 2: adding 7 parts of waterborne polyurethane resin and 1 part of polydimethylsiloxane, and homogenizing at 10000rpm for 20min until the mixture is uniform to obtain a solution b;
the use method of the hard film water-based antirust agent specifically comprises the following steps: the method comprises the steps of cleaning a workpiece for oil and rust removal, drying the workpiece in an oven at 80 ℃, soaking the workpiece in a solution a for 30 seconds, taking out the workpiece, drying the workpiece at 80 ℃, soaking the dried workpiece in a solution b for 30 seconds, taking out the workpiece, and drying the workpiece at 80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073139.7A CN108301001B (en) | 2018-01-25 | 2018-01-25 | Hard film aqueous antirust agent and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073139.7A CN108301001B (en) | 2018-01-25 | 2018-01-25 | Hard film aqueous antirust agent and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108301001A CN108301001A (en) | 2018-07-20 |
| CN108301001B true CN108301001B (en) | 2020-06-09 |
Family
ID=62866387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810073139.7A Active CN108301001B (en) | 2018-01-25 | 2018-01-25 | Hard film aqueous antirust agent and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108301001B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197927C (en) * | 2002-10-10 | 2005-04-20 | 中国石油化工股份有限公司 | Water-based metal antirust protective agent |
| CN103469210B (en) * | 2013-08-23 | 2016-05-04 | 吴江骏达电梯部件有限公司 | Emulsus antirust solution and preparation method thereof |
| CN106544105A (en) * | 2016-11-03 | 2017-03-29 | 金福英 | A kind of hard film rust preventive oil and preparation method thereof |
| CN107163844B (en) * | 2017-05-16 | 2019-04-02 | 江南大学 | A kind of antirust agent and the preparation method and application thereof |
| CN107217266A (en) * | 2017-06-20 | 2017-09-29 | 合肥太通制冷科技有限公司 | A kind of copper facing Steel pipe inner wall antirust compound and preparation method thereof |
-
2018
- 2018-01-25 CN CN201810073139.7A patent/CN108301001B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108301001A (en) | 2018-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2385800A (en) | Paint | |
| US3925087A (en) | Corrosion inhibition or prevention with inorganic-organic complexes | |
| CN104212329A (en) | Rust-proof metal coating and preparation method thereof | |
| CN108395943B (en) | Multifunctional efficient water-based cleaning agent and preparation method thereof | |
| CN108301001B (en) | Hard film aqueous antirust agent and application thereof | |
| CN102363688A (en) | Antifouling paint for underwater coating construction | |
| CN108624191B (en) | Green antirust pretreatment film forming solution for steel plate | |
| US5660890A (en) | Water-based soft coating for metals | |
| CN104231757A (en) | Novel environment-friendly paint | |
| CN109535942A (en) | A kind of high anti-corrosion chromium-free fingerprint-resistant coating and preparation method thereof | |
| CN114855173A (en) | Novel antirust agent | |
| US5338346A (en) | Soft coating compositions for metals | |
| CN110079164B (en) | Preparation and application of water-based antirust agent | |
| US1108395A (en) | Manufacture of paint for protecting iron, wood, and the like from sea growths. | |
| US2554985A (en) | Process for the protection of metals | |
| CN117418232B (en) | Rust-proof liquid, and head-scraping rust-proof process and rust-proof head-scraping by using rust-proof liquid | |
| KR0136144B1 (en) | Material for forming insulation layer on the non-directional si-steel sheet | |
| US5258532A (en) | Compound, preparation and use | |
| RU2786285C1 (en) | Method for obtaining an anticorrosive composition | |
| JP3453204B2 (en) | Black chromate treatment solution for Zn-Ni alloy plating | |
| JP2016191013A (en) | Water-soluble coating composition | |
| US2771371A (en) | Anti-rust oils | |
| JP2023060793A (en) | Method for producing iron rust-reducing rustproofing agent | |
| CN117418232A (en) | Rust-proof liquid, and head-scraping rust-proof process and rust-proof head-scraping by using rust-proof liquid | |
| WO2018000433A1 (en) | Anti-rust agent, metal workpiece and anti-rust treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220608 Address after: 063010 sannu River, airport city, Tangshan high tech Industrial Park, Hebei Province Patentee after: TANGSHAN HUABANG ANTICORROSION TECHNOLOGY Co.,Ltd. Address before: Room 101-2, building 2, No. 95, Daguan Middle Road, Tianhe District, Guangzhou, Guangdong 510653 (office only) Patentee before: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Effective date of registration: 20220608 Address after: Room 101-2, building 2, No. 95, Daguan Middle Road, Tianhe District, Guangzhou, Guangdong 510653 (office only) Patentee after: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Address before: No. 1800, Lihu Avenue, Binhu District, Wuxi City, Jiangsu Province Patentee before: Jiangnan University |
|
| TR01 | Transfer of patent right |