CN106867347A - A kind of hot rolled H-shaped temporary rust prevention liquid - Google Patents
A kind of hot rolled H-shaped temporary rust prevention liquid Download PDFInfo
- Publication number
- CN106867347A CN106867347A CN201710218702.0A CN201710218702A CN106867347A CN 106867347 A CN106867347 A CN 106867347A CN 201710218702 A CN201710218702 A CN 201710218702A CN 106867347 A CN106867347 A CN 106867347A
- Authority
- CN
- China
- Prior art keywords
- carboxylic acid
- unsaturated carboxylic
- rust prevention
- hot rolled
- copolymer
- 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.)
- Granted
Links
Classifications
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
-
- 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
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of hot rolled H-shaped temporary rust prevention liquid, belong to field of metal surface treatment technology.The copolymer of unsaturated carboxylic acid and unsaturated carboxylic acid hydroxy ester is configured to the aqueous solution of 5-20wt%, then the γ of 2 10wt% is added toward the aqueous solution（2,3 glycidoxies）Propyl trimethoxy silicane, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, then toward 0.2 2.0wt% levelling agents are added in the aqueous solution, stirs well and obtains final product hot rolled H-shaped temporary rust prevention liquid of the present invention.Hot-rolled steel section after being processed through the antirust solution can deposit 69 months non-corrosives under open-air condition.Simultaneously through the antirust solution process surface be not required in follow-up application remove, can directly application, simplified operation, it is cost-effective.
Description
Technical field
The present invention relates to a kind of hot rolled H-shaped temporary rust prevention liquid, belong to field of metal surface treatment technology.
Background technology
It is hot rolled H-shaped with excellent mechanical property, be widely used in engineering construction field.From the hot rolling H that production line gets off
Shaped steel such as without antirust treatment, will occur corrosion in storage, transportation, so as to influence follow-up application, serious can
The mechanical properties decrease of material can be made.The temporary rust prevention treatment of hot rolling type H steel generally uses antirust oil, but surface antirust oil meeting
Application treatment after influence, when with antirust paint application, it is necessary to which antirust oil is removed.
The content of the invention
Make the problem that temporary rust prevention treatment is present for current hot rolled H-shaped use antirust oil, the present invention provides a kind of heat
H profile steel temporary rust prevention liquid is rolled, the shortcoming that need to carry out oil removal treatment when follow-up application is processed through antirust oil processing is overcome.Simultaneously
The temporary rust prevention liquid has the advantages that easy to use, safe environmentally friendly.
In order to achieve the above object, hot rolled H-shaped temporary rust prevention liquid of the invention is prepared as follows：
The copolymer of unsaturated carboxylic acid and unsaturated carboxylic acid hydroxy ester is configured to the aqueous solution of 5-20wt%, then toward the aqueous solution
The γ of addition 2-10wt%-（2,3- glycidoxies）Propyl trimethoxy silicane, is heated to 60 DEG C, maintains 2 hours, is down to room
Temperature, then toward addition 0.2-2.0wt% levelling agents in the aqueous solution, stirs well and obtains final product hot rolled H-shaped temporary rust prevention of the present invention
Liquid.
Described levelling agent is any one in urea or n-butanol.
Described unsaturated carboxylic acid is any one in acrylic or methacrylic acid；Described unsaturated carboxylic acid hydroxyl
Ester is any one in acrylic acid -2- hydroxyl ethyl esters or first acrylic acid -2- hydroxyl ethyl esters.Described discord carboxylic acid and unsaturated carboxylic acid hydroxyl
The molecular weight of the copolymer of base ester is in 50000-500000.Described unsaturated carboxylic acid is with unsaturated carboxylic acid hydroxy ester in copolymer
In mol ratio be 9:1-5:1.
Described unsaturated carboxylic acid is prepared as follows with the copolymer of unsaturated carboxylic acid hydroxy ester：
100kg deionized waters and 20kg isopropanols are sequentially added in a kettle., it is any one in the unsaturated carboxylic acid that will be measured
Plant and added with any one in unsaturated carboxylic acid hydroxy ester, addition 300g ammonium persulfates, stirring and dissolving, after being warmed up to 80 DEG C,
Temperature in the kettle is maintained to be reacted 2 hours at 80-85 DEG C, when being cooled to 60 DEG C, decompression steams isopropyl alcohol and water, obtains insatiable hunger carboxylic acid and insatiable hunger
With the copolymer of carboxylic hydroxy group's ester.
The present invention provides a kind of hot rolled H-shaped temporary rust prevention liquid mainly by insatiable hunger carboxylic acid and unsaturated carboxylic acid hydroxy ester
Copolymer catalyzing hydrolysis γ-（2,3- glycidoxies）The aqueous solution composition of propyl trimethoxy silicane.Carboxyl in copolymer
With the iron ion crosslinking of steel surface layer protecting film can be formed in steel surface.Also contain hydroxyl in the copolymerization, it can
With the hydroxyl condensation after silane hydrolyzate, from the Silica Surface formation layer protecting film that face produces after hydrolyzing, prevent Ludox from entering
One-step polymerization and precipitate.Hot-rolled steel section after being processed through the antirust solution can deposit 6-9 month non-corrosive under open-air condition.Simultaneously
Through the antirust solution process surface be not required in follow-up application remove, can directly application, simplified operation, it is cost-effective.
Specific embodiment
Embodiment 1
Described unsaturated carboxylic acid is prepared as follows with the copolymer of unsaturated carboxylic acid hydroxy ester：
100kg deionized waters and 20kg isopropanols are sequentially added in a kettle., it is any one in the unsaturated carboxylic acid that will be measured
Plant and added with any one in unsaturated carboxylic acid hydroxy ester, addition 300g ammonium persulfates, stirring and dissolving, after being warmed up to 80 DEG C,
Temperature in the kettle is maintained to be reacted 2 hours at 80-85 DEG C, when being cooled to 60 DEG C, decompression steams isopropyl alcohol and water, obtains insatiable hunger carboxylic acid and insatiable hunger
With the copolymer of carboxylic hydroxy group's ester.
Acrylic acid and acrylic acid -2- hydroxyl ethyl ester copolymer 5kg, acrylic acid and the mol ratio of itaconic acid are 9 in copolymer:1,
Molecular weight of copolymer 50000, adds 100kg deionized waters；Addition 2kg γ-（2,3- glycidoxies）Propyl trimethoxy silicon
Alkane, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, prepare copolymer and γ-（2,3- glycidoxies）Propyl trimethoxy
The mixture of silane.0.2kg urea is added, is mixed and is obtained final product hot rolled H-shaped temporary rust prevention liquid.It is hot rolled H-shaped after being processed with it
6 months surface non-corrodings of outdoor storage.
Embodiment 2
Acrylic acid and 2-hydroxyethyl methacry-late copolymer 8kg, acrylic acid and the mol ratio of itaconic acid are 9 in copolymer:1,
Molecular weight of copolymer 50000, adds 100kg deionized waters；Addition 4kg γ-（2,3- glycidoxies）Propyl trimethoxy silicon
Alkane, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, prepare copolymer and γ-（2,3- glycidoxies）Propyl trimethoxy
The mixture of silane.0.4kg n-butanols are added, is mixed and is obtained final product hot rolled H-shaped temporary rust prevention liquid.With its hot-rolling H-shaped after processing
7 months surface non-corrodings of steel outdoor storage.
Embodiment 3
Methacrylic acid and acrylic acid -2- hydroxyl ethyl ester copolymer 1 0kg, acrylic acid and the mol ratio of itaconic acid are 8 in copolymer:
1, molecular weight of copolymer 200000 adds 100kg deionized waters；Addition 5kg γ-（2,3- glycidoxies）Propyl trimethoxy
Silane, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, prepare copolymer and γ-（2,3- glycidoxies）Propyl group trimethoxy
The mixture of base silane.1.0kg urea is added, is mixed and is obtained final product hot rolled H-shaped temporary rust prevention liquid.With its hot-rolling H-shaped after processing
8 months surface non-corrodings of steel outdoor storage.
Embodiment 4
Methacrylic acid and 2-hydroxyethyl methacry-late copolymer 1 5kg, the mol ratio of acrylic acid and itaconic acid in copolymer
It is 6:1, molecular weight of copolymer 400000 adds 100kg deionized waters；Addition 6kg γ-（2,3- glycidoxies）Propyl group front three
TMOS, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, prepare copolymer and γ-（2,3- glycidoxies）Propyl group three
The mixture of methoxy silane.1.0kg n-butanols are added, is mixed and is obtained final product hot rolled H-shaped temporary rust prevention liquid.After being processed with it
8 months surface non-corrodings of hot rolled H-shaped outdoor storage.
Embodiment 5
Methacrylic acid and acrylic acid -2- hydroxyl ethyl ester copolymer 20kg, acrylic acid and the mol ratio of itaconic acid are 8 in copolymer:
1, molecular weight of copolymer 500000 adds 100kg deionized waters；Addition 10kg γ-（2,3- glycidoxies）Propyl group trimethoxy
Base silane, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, prepare copolymer and γ-（2,3- glycidoxies）Propyl group front three
The mixture of TMOS.2kg urea is added, is mixed and is obtained final product hot rolled H-shaped temporary rust prevention liquid.With its hot-rolling H-shaped after processing
9 months surface non-corrodings of steel outdoor storage.
Embodiment 6
Acrylic acid and 2-hydroxyethyl methacry-late copolymer 20kg, acrylic acid and the mol ratio of itaconic acid are 7 in copolymer:
1, molecular weight of copolymer 400000 adds 100kg deionized waters；Addition 8kg γ-（2,3- glycidoxies）Propyl trimethoxy
Silane, is heated to 60 DEG C, maintains 2 hours, is down to room temperature, prepare copolymer and γ-（2,3- glycidoxies）Propyl group trimethoxy
The mixture of base silane.2kg n-butanols are added, is mixed and is obtained final product hot rolled H-shaped temporary rust prevention liquid.With its hot-rolling H-shaped after processing
9 months surface non-corrodings of steel outdoor storage.
Claims (5)
1. a kind of hot rolled H-shaped temporary rust prevention liquid, it is characterised in that prepare as follows：
The copolymer of unsaturated carboxylic acid and unsaturated carboxylic acid hydroxy ester is configured to the aqueous solution of 5-20wt%, then toward the aqueous solution
γ-(2,3- glycidoxy) propyl trimethoxy silicane of 2-10wt% is added, 60 DEG C are heated to, maintained 2 hours, be down to room
Temperature, then toward addition 0.2-2.0wt% levelling agents in the aqueous solution, stirs well and obtains final product hot rolled H-shaped temporary rust prevention liquid.
2. hot rolled H-shaped temporary rust prevention liquid according to claim 1, it is characterised in that described levelling agent be urea or
Any one in n-butanol.
3. hot rolled H-shaped temporary rust prevention liquid according to claim 1, it is characterised in that described unsaturated carboxylic acid is third
Any one in olefin(e) acid or methacrylic acid；Described unsaturated carboxylic acid hydroxy ester is acrylic acid -2- hydroxyl ethyl esters or first propylene
In acid -2- hydroxyl ethyl esters any one.
4. the hot rolled H-shaped temporary rust prevention liquid according to claim 1 or 3, it is characterised in that described discord carboxylic acid with not
The molecular weight of the copolymer of saturated carboxylic acid hydroxy ester is in 50000-500000, described unsaturated carboxylic acid and unsaturated carboxylic acid hydroxyl
Ester mol ratio in the copolymer is 9:1-5:1.
5. hot rolled H-shaped temporary rust prevention liquid according to claim 1, it is characterised in that described unsaturated carboxylic acid with not
The copolymer of saturated carboxylic acid hydroxy ester is prepared as follows：
100kg deionized waters and 20kg isopropanols are sequentially added in a kettle., it is any one in the unsaturated carboxylic acid that will be measured
Plant and added with any one in unsaturated carboxylic acid hydroxy ester, addition 300g ammonium persulfates, stirring and dissolving, after being warmed up to 80 DEG C,
Temperature in the kettle is maintained to be reacted 2 hours at 80-85 DEG C, when being cooled to 60 DEG C, decompression steams isopropyl alcohol and water, obtains insatiable hunger carboxylic acid and insatiable hunger
With the copolymer of carboxylic hydroxy group's ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218702.0A CN106867347B (en) | 2017-04-05 | 2017-04-05 | Temporary antirust liquid for hot-rolled H-shaped steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218702.0A CN106867347B (en) | 2017-04-05 | 2017-04-05 | Temporary antirust liquid for hot-rolled H-shaped steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106867347A true CN106867347A (en) | 2017-06-20 |
| CN106867347B CN106867347B (en) | 2020-04-24 |
Family
ID=59160959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710218702.0A Active CN106867347B (en) | 2017-04-05 | 2017-04-05 | Temporary antirust liquid for hot-rolled H-shaped steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106867347B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111662774A (en) * | 2020-06-15 | 2020-09-15 | 武汉迪赛环保新材料股份有限公司 | Alkaline silane-doped borate aqueous environment-friendly antirust agent for surface treatment of deformed steel bar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004020477A1 (en) * | 2002-08-08 | 2004-03-11 | Celanese Emulsions Gmbh | Aqueous polymer dispersions, method for the production thereof and use thereof, especially in anti-corrosion coatings |
| CN102115517A (en) * | 2011-01-04 | 2011-07-06 | 武汉工程大学 | Preparation method for anti-rust soap-free acrylate emulsion |
| CN104532220A (en) * | 2014-12-16 | 2015-04-22 | 武汉迪赛高科技研究发展有限公司 | Self-phosphating antirust emulsion and preparation method thereof |
| CN104650296A (en) * | 2013-11-20 | 2015-05-27 | 中国石油化工股份有限公司 | Modified polyacrylate emulsion, preparation method and application thereof |
-
2017
- 2017-04-05 CN CN201710218702.0A patent/CN106867347B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004020477A1 (en) * | 2002-08-08 | 2004-03-11 | Celanese Emulsions Gmbh | Aqueous polymer dispersions, method for the production thereof and use thereof, especially in anti-corrosion coatings |
| CN102115517A (en) * | 2011-01-04 | 2011-07-06 | 武汉工程大学 | Preparation method for anti-rust soap-free acrylate emulsion |
| CN104650296A (en) * | 2013-11-20 | 2015-05-27 | 中国石油化工股份有限公司 | Modified polyacrylate emulsion, preparation method and application thereof |
| CN104532220A (en) * | 2014-12-16 | 2015-04-22 | 武汉迪赛高科技研究发展有限公司 | Self-phosphating antirust emulsion and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李克友，等: "《高分子合成原理及工艺学》", 31 October 1999, 北京：科学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111662774A (en) * | 2020-06-15 | 2020-09-15 | 武汉迪赛环保新材料股份有限公司 | Alkaline silane-doped borate aqueous environment-friendly antirust agent for surface treatment of deformed steel bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106867347B (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101486866B (en) | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution | |
| TWI513519B (en) | Coil coating method | |
| CN104356320B (en) | Waterborne epoxy ester-acrylic hybrid resin and preparation method thereof | |
| KR20120127730A (en) | Surface-treating agent for zinc-plated steel sheet, and zinc-plated steel sheet and process for production thereof | |
| KR101502843B1 (en) | Eco friendly coating method of steel | |
| TW200811256A (en) | Surface treated metal and surface treatment agent | |
| JP2010236074A (en) | Surface treating agent, method of manufacturing plated steel sheet using the surface treating agent, and plated steel sheet | |
| CN109852181A (en) | The preparation method of epoxy modified acrylic resin antirust emulsion | |
| CN100575435C (en) | The acrylic ester emulsion manufacture method that is used for the phosphoric acid ester group of anticorrosive coating | |
| CN108239458A (en) | A kind of phosphate modified acrylic acid aqueous antirusting paint of salt fog resistance | |
| CN101111572A (en) | Method for applying integrated pre-treatment layers containing dicarboxylic acid olefin copolymers to metallic surfaces | |
| CN103483998A (en) | Corrosion inhibitor for steel wire and preparation method thereof | |
| CN1020196C (en) | Watery coating with rust | |
| JP4997044B2 (en) | Polyaniline doped with metal phosphate and method for producing the same, polyaniline-containing solution doped with metal phosphate, and paint | |
| CN106867347A (en) | A kind of hot rolled H-shaped temporary rust prevention liquid | |
| CN105949922A (en) | Wear resistant and anti-rust paint for building steel | |
| US20220055067A1 (en) | Bilayer composition for surface treatment of steel plate and surface-treated steel plate using same | |
| CN102993896A (en) | Amino resin aqueous finishing coating | |
| CN101314808A (en) | High-efficiency low-cost high-temperature inoxidzable coating material | |
| CN105714302A (en) | Multifunctional antirust corrosion-inhibiting agent | |
| CN112898852A (en) | Water-based anti-rust coating | |
| CN106810649A (en) | A kind of self-drying type water-solubility acrylic acid organic siliconresin and preparation method and application | |
| CN110509012A (en) | The processing technology of new automobile protective plate | |
| CN106189583A (en) | One is applied to 25 type passenger vehicle water based shop primer and preparation method thereof | |
| CN105038487A (en) | Water-based anticorrosive paint for ship and preparation method of water-based anticorrosive paint |
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 | ||
| CB02 | Change of applicant information |
Address after: 436070 Gedian Economic and Technological Development Zone, Wuhan City, Hubei Province Applicant after: WUHAN DESYTEK ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. Address before: 436070 Gedian Economic and Technological Development Zone, Wuhan City, Hubei Province Applicant before: WUHAN DESYTEK ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 430056 Room 204, 2nd floor, R & D building, No. 220, Checheng Avenue, Wuhan Economic and Technological Development Zone, Wuhan, Hubei Province Patentee after: WUHAN DESYTEK ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. Address before: 436070 Gedian Economic and Technological Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN DESYTEK ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |