CN106867387B - A kind of environmental protection paint - Google Patents
A kind of environmental protection paint Download PDFInfo
- Publication number
- CN106867387B CN106867387B CN201710258316.4A CN201710258316A CN106867387B CN 106867387 B CN106867387 B CN 106867387B CN 201710258316 A CN201710258316 A CN 201710258316A CN 106867387 B CN106867387 B CN 106867387B
- Authority
- CN
- China
- Prior art keywords
- parts
- water
- environmental protection
- resin
- aqueous
- 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.)
- Expired - Fee Related
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
- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of environmental protection paints, it is prepared including following raw material: 20-32 parts of water-base resin, 2-5 parts of color additive, 40-65 parts of water, 0.3 part of LT auxiliary rheological agents, 0.5-0.7 parts of WT-204 auxiliary rheological agents and 3-5 parts of coalescing agent, the water-base resin includes aqueous polyurethane resin emulsion and aqueous alkide resin, and the weight part ratio of the aqueous polyurethane resin emulsion and aqueous alkide resin is 1:1.Environmental protection paint of the invention disposable thickness of dry film with higher, excellent water resistance, alcohol resistance, good wearability, save the cost and the good feature of environmental protection.
Description
Technical field
The present invention relates to chemical coating, in particular to a kind of environmental protection paint.
Background technique
Environmental protection paint refers to the performance indicator of painting, safety index under the premise of meeting respective product standard.Meet
The painting for the technical requirements that National Environmental famous special product proposes.Being applied to body surface can form with protection, decoration or spy
The general name of a kind of liquid or solid material of the solid coated film of different performance.
Application No. is 201410835206.6 Chinese invention patents to disclose a kind of environmental protection paint, by following raw materials according according to such as
Under mass fraction proportion be made: 41-49 parts of natural resin, 3-6 parts of color additive, 0.5-1.5 parts of defoaming agent, active carbon 4-6
Part, 4-7 parts of phytochrome, 2-5 parts of iron oxide red, 11-15 parts of ultra-fine barium sulfate and 15-24 parts of tung oil.
The environmental protection paint of above-mentioned patent disclosure there are water-fast alcohol resistance can poor, disposable thickness of dry film it is low and it is at high cost not
Foot.
Summary of the invention
The technical problems to be solved by the present invention are: water-fast alcohol resistance energy, disposable dry film can be effectively improved by providing one kind
Thickness and the environmental protection paint for reducing cost.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of environmental protection paint, including following raw material are prepared: 20-32 parts of water-base resin, 2-5 parts of color additive,
40-65 parts of water, 0.3 part of LT auxiliary rheological agents, 0.5-0.7 parts of WT-204 auxiliary rheological agents and 3-5 parts of coalescing agent, the water-base resin
Including aqueous polyurethane resin emulsion and aqueous alkide resin, the weight of the aqueous polyurethane resin emulsion and aqueous alkide resin
Amount part is compared for 1:1.
The beneficial effects of the present invention are:
(1) LT auxiliary rheological agents can provide low-shear viscosity, and WT-204 auxiliary rheological agents can make coating obtain similar Newtonian liquid
The rheological property of body is used in combination, so that the coating after environmental protection paint use is obtained using LT auxiliary rheological agents and WT-204 auxiliary rheological agents
Obtain higher disposable thickness of dry film and water resistance；
(2) middle use water soluble acrylic acid etc. is different from the prior art as resin for water paint, the present invention uses parts by weight
Than for 1:1 aqueous polyurethane resin emulsion and aqueous alkide resin as film-forming resin, aqueous polyurethane resin emulsion has
It the advantages of hardness height, water resistance height, moldability and film good hand touch, after being used cooperatively with aqueous alkide resin, can not only mention
Above-mentioned technical effect when its high exclusive use, also has good resistance to pure and mild wearability；
(3) middle resin content is different from the prior art generally more than 40 parts by weight, water-base resin raw material weight of the invention
Measuring part is only 20-32 parts, effectively reduces the dosage of water-base resin raw material, save the cost, in addition, environmental protection paint of the invention is whole
Using aqueous materials, there is the good feature of environmental protection；
(4) through experimental test, the hardness of environmental protection paint of the invention reaches HB, environmental protection aspect, burst size of methanal, benzene homologues and
Content of beary metal is in the detection limit of standard method hereinafter, volatile matter content also reaches national standard, with excellent resistance to
Aqueous and alcohol resistance.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, it is explained below in conjunction with embodiment.
LT auxiliary rheological agents of the invention are one by organically-modified montmorillonitic clay class auxiliary rheological agents；WT-204 rheology helps
Agent is not solvent-laden association type polyurethane levelling auxiliary rheological agents；Aqueous polyurethane resin emulsion can be from commercially available, such as purchases
It buys in the aqueous polyurethane resin emulsion of Hefei Heng Rui Chemical Co., Ltd. production.
The most critical design of the present invention is: be used in combination using LT auxiliary rheological agents and WT-204 auxiliary rheological agents, obtain compared with
High disposable thickness of dry film and water resistance.
The present invention provides a kind of environmental protection paint, including following raw material is prepared: 20-32 parts of water-base resin, dyestuff
2-5 parts of auxiliary agent, 40-65 parts of water, 0.3 part of LT auxiliary rheological agents, 0.5-0.7 parts of WT-204 auxiliary rheological agents and 3-5 parts of coalescing agent, institute
Stating water-base resin includes aqueous polyurethane resin emulsion and aqueous alkide resin, the aqueous polyurethane resin emulsion and aqueous alcoholic
The weight part ratio of acid resin is 1:1.
As can be seen from the above description, the beneficial effects of the present invention are:
(1) LT auxiliary rheological agents can provide low-shear viscosity, and WT-204 auxiliary rheological agents can make coating obtain similar Newtonian liquid
The rheological property of body is used in combination, so that the coating after environmental protection paint use is obtained using LT auxiliary rheological agents and WT-204 auxiliary rheological agents
Obtain higher disposable thickness of dry film and water resistance；
(2) middle use water soluble acrylic acid etc. is different from the prior art as resin for water paint, the present invention uses parts by weight
Than for 1:1 aqueous polyurethane resin emulsion and aqueous alkide resin as film-forming resin, aqueous polyurethane resin emulsion has
It the advantages of hardness height, water resistance height, moldability and film good hand touch, after being used cooperatively with aqueous alkide resin, can not only mention
Above-mentioned technical effect when its high exclusive use, also has good resistance to pure and mild wearability；
(3) middle resin content is different from the prior art generally more than 40 parts by weight, water-base resin raw material weight of the invention
Measuring part is only 20-32 parts, effectively reduces the dosage of water-base resin raw material, save the cost, in addition, environmental protection paint of the invention is whole
Using aqueous materials, there is the good feature of environmental protection；
(4) through experimental test, the hardness of environmental protection paint of the invention reaches HB, environmental protection aspect, burst size of methanal, benzene homologues and
Content of beary metal is in the detection limit of standard method hereinafter, volatile matter content also reaches national standard, with excellent resistance to
Aqueous and alcohol resistance.
Further, the coalescing agent is butyl and/or dipropylene.
Further, the coalescing agent is the mixture of butyl and dipropylene, the diethyl two
The weight part ratio of alcohol butyl ether and dipropylene is 3.3-3.8:1.
Seen from the above description, the butyl of above-mentioned weight part ratio and dipropylene can significantly reduce entirety
The minimum film formation temperature of environmental protection paint.
Further, the aqueous polyurethane resin emulsion is the aqueous polyurethane resin emulsion and type of model KT200
Number for KT803 aqueous polyurethane resin emulsion mixed liquor, the aqueous polyurethane resin emulsion and model of model KT200
The weight part ratio of the aqueous polyurethane resin emulsion of KT803 is 3:1.
Seen from the above description, KT200 resin is the water-based aliphaic polyurethane resin of a high rigidity, excellent wear resistance, but
Alcohol resistance can be slightly worse；National standard can be not achieved in the alcohol resistance of the coating of single KT200 resin preparation, such as compound with KT803 resin,
The alcohol resistance of coating can be improved.When KT200 and KT803 weight ratio are 3:1, the alcohol resistance and hardness performance of environmental protection paint reach
Most preferably.
Further, the aqueous alkide resin is prepared by pentaerythrite and 2,2- dihydromethyl propionic acid, and in system
Addition maleic anhydride oil, the weight of the maleic anhydride oil and aqueous alkide resin in the standby aqueous alkide resin obtained
Amount part is compared for 0.08-0.1:1.
Seen from the above description, pentaerythrite and 2,2- dihydromethyl propionic acid prepare aqueous alkide resin, pentaerythrite official
Energy degree is high, and reaction is not easy to control, easy gelation, and by itself and 2, after 2- dihydromethyl propionic acid is used in combination, then it can make average
Degree of functionality is 3, easy gelation problems when solving only with pentaerythrite, and can be mentioned with 2,2- dihydromethyl propionic acid for resin
For side chain carboxyl group be neutralized into salt achieve the effect that it is water-soluble.In addition, the ester bond of aqueous alkide resin is easy hair under weak basic condition
Unboiled water solution makes its aqueous solution that muddy, pH decline, resin layering, water-soluble phenomena such as being deteriorated occur during storage, using suitable
Anhydride maleique oil, because it generates a kind of leptospira structure with alcohol acid molecule, protects ester bond, so being remarkably improved water
The stability of property alkyd resin.Maleic anhydride oil dosage is too many, the easy yellowing of paint film, hardness, the decline of water-fast and petrol-resistance；
Dosage is very little, cause aqueous alkide resin stability and it is water-soluble be deteriorated, can also make the hardness of paint film, gloss, water-fast and resistance to vapour
Oiliness decreases.Therefore, when being designed using above-mentioned weight part ratio, the properties of paint film are best.
The embodiment of the present invention one are as follows:
A kind of environmental protection paint, including following raw material are prepared: 20 parts of water-base resin, 2 parts of color additive, water 40
Part, 0.3 part of LT auxiliary rheological agents, 0.5 part of WT-204 auxiliary rheological agents, 3 parts of coalescing agent, the water-base resin includes aqueous polyurethane
The weight part ratio of resin emulsion and aqueous alkide resin, the aqueous polyurethane resin emulsion and aqueous alkide resin is 1:1.Institute
State the mixture that coalescing agent is butyl and dipropylene, the butyl and dipropylene
Weight part ratio be 3.3:1.
The aqueous polyurethane resin emulsion is the aqueous polyurethane resin emulsion and model KT803 of model KT200
Aqueous polyurethane resin emulsion mixed liquor, the aqueous polyurethane resin emulsion of model KT200 and the water of model KT803
Property ester-polyurethane resin emulsion weight part ratio be 3:1.
The aqueous alkide resin is prepared by pentaerythrite and 2,2- dihydromethyl propionic acid, and in the water prepared
Property alkyd resin in addition maleic anhydride oil, the weight part ratio of the maleic anhydride oil and aqueous alkide resin is
0.08:1.
The embodiment of the present invention two are as follows:
A kind of environmental protection paint, including following raw material are prepared: 32 parts of water-base resin, 5 parts of color additive, water 65
Part, 3 parts of LT auxiliary rheological agents, 0.7 part of WT-204 auxiliary rheological agents, 3-5 parts of coalescing agent, the water-base resin includes aqueous polyurethane
The weight part ratio of resin emulsion and aqueous alkide resin, the aqueous polyurethane resin emulsion and aqueous alkide resin is 1:1.Institute
State the mixture that coalescing agent is butyl and dipropylene, the butyl and dipropylene
Weight part ratio be 3.8:1.
The aqueous polyurethane resin emulsion is the aqueous polyurethane resin emulsion and model KT803 of model KT200
Aqueous polyurethane resin emulsion mixed liquor, the aqueous polyurethane resin emulsion of model KT200 and the water of model KT803
Property ester-polyurethane resin emulsion weight part ratio be 3:1.
The aqueous alkide resin is prepared by pentaerythrite and 2,2- dihydromethyl propionic acid, and in the water prepared
Property alkyd resin in addition maleic anhydride oil, the weight part ratio of the maleic anhydride oil and aqueous alkide resin is
0.1:1.
The embodiment of the present invention three are as follows:
A kind of environmental protection paint, including following raw material are prepared: 28 parts of water-base resin, 3 parts of color additive, water 50
Part, 0.3 part of LT auxiliary rheological agents, 0.6 part of WT-204 auxiliary rheological agents, 3-5 parts of coalescing agent, the water-base resin include aqueous poly- ammonia
The weight part ratio of ester resin emulsion and aqueous alkide resin, the aqueous polyurethane resin emulsion and aqueous alkide resin is 1:1.
The coalescing agent is the mixture of butyl and dipropylene, the butyl and dipropylene glycol fourth
The weight part ratio of ether is 3.5:1.
The aqueous polyurethane resin emulsion is the aqueous polyurethane resin emulsion and model KT803 of model KT200
Aqueous polyurethane resin emulsion mixed liquor, the aqueous polyurethane resin emulsion of model KT200 and the water of model KT803
Property ester-polyurethane resin emulsion weight part ratio be 3:1.
The aqueous alkide resin is prepared by pentaerythrite and 2,2- dihydromethyl propionic acid, and in the water prepared
Property alkyd resin in addition maleic anhydride oil, the weight part ratio of the maleic anhydride oil and aqueous alkide resin is
0.09:1.
Experimental test
By the environmental protection paint in the prior art referred in the environmental protection paint and background technique of embodiment one to embodiment three point
It is not tested for the property (test method provides to carry out according to existing standard).Test result is as follows table 1:
Table 1
By above-mentioned table 1 it is found that the hardness of environmental protection paint of the invention reaches HB, environmental protection aspect, burst size of methanal, benzene homologues and
Content of beary metal is in the detection limit of standard method hereinafter, volatile matter content also reaches national standard, with excellent resistance to
Aqueous and alcohol resistance.
In conclusion environmental protection paint provided by the invention disposable thickness of dry film with higher, excellent water resistance, resistance to alcohol
Property, good wearability, save the cost and the good feature of environmental protection.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright description are applied directly or indirectly in relevant technical field, are similarly included in this hair
In bright scope of patent protection.
Claims (4)
1. a kind of environmental protection paint, which is characterized in that be prepared including following raw material: 20-32 parts of water-base resin, dyestuff help
2-5 parts of agent, 40-65 parts of water, 0.3 part of LT auxiliary rheological agents, 0.5-0.7 parts of WT-204 auxiliary rheological agents and 3-5 parts of coalescing agent, it is described
Water-base resin includes aqueous polyurethane resin emulsion and aqueous alkide resin, the aqueous polyurethane resin emulsion and water alcohol acid
The weight part ratio of resin is 1:1.
2. environmental protection paint according to claim 1, which is characterized in that the coalescing agent is butyl and/or two
Propandiol butyl ether.
3. environmental protection paint according to claim 2, which is characterized in that the coalescing agent is butyl and dipropyl two
The weight part ratio of the mixture of alcohol butyl ether, the butyl and dipropylene is 3.3-3.8:1.
4. environmental protection paint according to claim 1, which is characterized in that the aqueous alkide resin is by pentaerythrite and 2,2- bis-
Hydroxymethyl propionic acid prepares, and maleic anhydride oil, the maleic are added in the aqueous alkide resin prepared
The weight part ratio of dicarboxylic anhydride oil and aqueous alkide resin is 0.08-0.1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258316.4A CN106867387B (en) | 2017-04-19 | 2017-04-19 | A kind of environmental protection paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258316.4A CN106867387B (en) | 2017-04-19 | 2017-04-19 | A kind of environmental protection paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106867387A CN106867387A (en) | 2017-06-20 |
| CN106867387B true CN106867387B (en) | 2019-04-19 |
Family
ID=59162716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710258316.4A Expired - Fee Related CN106867387B (en) | 2017-04-19 | 2017-04-19 | A kind of environmental protection paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106867387B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107189661A (en) * | 2017-07-11 | 2017-09-22 | 合肥尚涵装饰工程有限公司 | A kind of road sign weather-proof reflecting coating material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486863A (en) * | 2008-01-18 | 2009-07-22 | 深圳市海川实业股份有限公司 | Environment friendly waterborne paint and preparation thereof |
| CN101845261A (en) * | 2009-03-24 | 2010-09-29 | 上海三银制漆有限公司 | Self-cleaning water-based fluorocarbon paint for external walls |
| CN102167944A (en) * | 2011-05-31 | 2011-08-31 | 苏州市金近涂料有限公司 | Water-based dipping lacquer and preparation method thereof |
| CN102471630A (en) * | 2009-07-24 | 2012-05-23 | 关西涂料株式会社 | Water-based coating composition and method for forming multilayer coating film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7001943B2 (en) * | 2003-10-17 | 2006-02-21 | E. I. Dupont De Nemours And Company | Chip resistant primer composition useful for producing two-tone finishes |
-
2017
- 2017-04-19 CN CN201710258316.4A patent/CN106867387B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486863A (en) * | 2008-01-18 | 2009-07-22 | 深圳市海川实业股份有限公司 | Environment friendly waterborne paint and preparation thereof |
| CN101845261A (en) * | 2009-03-24 | 2010-09-29 | 上海三银制漆有限公司 | Self-cleaning water-based fluorocarbon paint for external walls |
| CN102471630A (en) * | 2009-07-24 | 2012-05-23 | 关西涂料株式会社 | Water-based coating composition and method for forming multilayer coating film |
| CN102167944A (en) * | 2011-05-31 | 2011-08-31 | 苏州市金近涂料有限公司 | Water-based dipping lacquer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106867387A (en) | 2017-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105238232B (en) | Aqueous antirust paint and preparation method thereof | |
| CN102993810A (en) | General water-based quick-drying anti-rust paint and preparation method thereof | |
| CN101338107B (en) | Water-soluble wickerwork paint and preparation thereof | |
| CN104877084A (en) | Aqueous acrylic acid modified alkyd resin and water dispersion thereof | |
| CN106634382B (en) | A kind of bottom surface unification self-drying paint of environment friendly corrosion protection quick-dry type and preparation method thereof | |
| CN110229573A (en) | A kind of aqueous rusty anti-corrosive primer and preparation method thereof | |
| CN101812156B (en) | Water-base ambient crosslinking acrylate wood paint resin and preparation method thereof | |
| CN102807651B (en) | Method for preparing aqueous antirust polymer emulsion | |
| CN104341547B (en) | A kind of polyacrylate closing emulsion and preparation method thereof | |
| CN102153910B (en) | Composite special water-based ink for plastic inner printing | |
| CN105505148B (en) | A kind of preparation method of aqueous double-component polyurethane acid modified alcoholic woodenware lacquer | |
| CN109021801A (en) | A kind of aqueous silver dollar type metal flash paint of automobile and preparation method thereof | |
| CN106349899B (en) | Aqueous automobile vehicle bridge paint and preparation method thereof | |
| CN108977015A (en) | A kind of water alcohol acid finishing coat and its preparation method and application | |
| CN106978052B (en) | A kind of preparation method of environmental protection paint | |
| CN106995650A (en) | A kind of showcase aqueous finish paint | |
| CN110028861A (en) | Aqueous industrial aluminium paint, preparation method and its flatulence detection device | |
| CN106867387B (en) | A kind of environmental protection paint | |
| CN105255261A (en) | Aqueous pigment paste and preparation method thereof | |
| CN108977043A (en) | Universal single-component water-based metal flash paint of one kind and preparation method thereof | |
| CN105131763A (en) | Water paint for wood furniture and preparation method thereof | |
| CN107964340B (en) | Aqueous amino industrial coating and preparation method thereof | |
| CN109439112A (en) | Water-based acrylic finish paint | |
| CN109575787A (en) | A kind of double-component aqueous wood paint that polystyrene microsphere is modified | |
| WO2017088084A1 (en) | Aqueous skin-touch treatment agent for synthetic leather and preparation method for same |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 Termination date: 20210419 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |