CN110760218A - Preparation method of flexographic water-based white ink - Google Patents
Preparation method of flexographic water-based white ink Download PDFInfo
- Publication number
- CN110760218A CN110760218A CN201911201257.2A CN201911201257A CN110760218A CN 110760218 A CN110760218 A CN 110760218A CN 201911201257 A CN201911201257 A CN 201911201257A CN 110760218 A CN110760218 A CN 110760218A
- Authority
- CN
- China
- Prior art keywords
- white ink
- percent
- pigment
- ethyl alcohol
- preparing
- 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.)
- Pending
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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a preparation method of flexographic water-based white ink, which comprises the following steps: preparing raw materials for production according to mass percent: 23.8 to 25.8 percent of deionized water, 19.5 to 20.5 percent of absolute ethyl alcohol, 19 to 21 percent of acrylic emulsion, 0.1 to 0.3 percent of defoaming agent, 9.5 to 10.5 percent of pigment and 24 to 26 percent of functional filler; the acrylic emulsion is styrene-acrylic acid copolymer, the pigment is titanium dioxide, and the functional filler is kaolin. The adhesive bonding property of the water-based white ink can be improved by using the bonding force of the kaolin; the flexible water-based white ink provided by the invention has no components with pungent odor such as ammonia water during preparation, and avoids pollution of a working environment.
Description
Technical Field
The invention belongs to the technical field of ink production, and particularly relates to a preparation method of flexible water-based white ink.
Background
The water-based ink is called water ink for short, and the water-based ink for the flexographic plate is called liquid ink, and is mainly prepared by carrying out composite grinding on water-soluble resin, organic pigment, solvent and related auxiliary agents. The water-based ink is particularly suitable for packaging and printing products with strict requirements on sanitary conditions, such as cigarettes, wine, foods, beverages, medicines, toys for children and the like. The water-based ink is a uniform slurry-like substance composed of a binder, a pigment, an auxiliary agent and the like. The vehicle provides the necessary transfer properties of the ink and the pigment imparts color to the ink. Aqueous ink vehicles are largely classified into two types: water-diluted type and water-dispersed type. The former can be used in a wide variety of resin types, such as maleic acid resin, shellac, maleic acid resin-modified shellac, urethane, water-soluble acrylic resin, and aqueous amino resin. The water dispersion type vehicle is obtained by polymerizing an emulsified monomer in water, and is considered to be an oil-in-water emulsion type because it is a two-phase system in which an oil phase is dispersed in a water phase in the form of particles and can be diluted with water although it cannot be dissolved in water. Modern inks are mainly classified into four major categories according to plate type: including letterpress, lithographic, gravure, and mesh inks.
And the packages of some products such as candies, foods and medicines are mostly printed by solvent-based white ink. However, after the existing white ink is used, especially for printing on candy paper, the ink is easy to fall off in the deformation process of the packing paper due to poor adhesion; for example, the chinese patent No. CN101003703B, wherein the amount of water is large, the adhesion is insufficient, and the ink is liable to fall off, and during the production process, the drying speed of the ink is slow, and once the ink is touched on the plastic wrapping paper, the ink stains may occur, which affects the appearance, and the ink has ammonia water volatile liquid, and the taste is pungent.
In addition, in the production of the patent with the publication number of CN101003703B, excessive water and ethanol are added, the stirring time needs to be prolonged in the later production process, and the production efficiency of the flexographic aqueous white ink is reduced by concentrating in the stirring process. Therefore, the invention provides a preparation method of the flexographic aqueous white ink, which can accelerate drying, has strong adhesive force and no pungent smell during production.
Disclosure of Invention
The invention aims to provide a preparation method of flexographic aqueous white ink, which aims to solve the problems of low drying speed, low cohesive force and pungent smell during production of the flexographic aqueous ink in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of flexographic water-based white ink comprises the following steps:
s1, preparing raw materials for production according to mass percent: 23.8-25.8% of deionized water, 19.5-20.5% of absolute ethyl alcohol, 19-21% of acrylic emulsion, 0.1-0.3% of defoaming agent, 9.5-10.5% of pigment and 24-26% of functional filler, wherein the acrylic emulsion is styrene-acrylic acid copolymer, the pigment is titanium dioxide and the functional filler is kaolin;
s2, firstly, 18-21% of deionized water, all acrylic emulsion, antifoaming agent and pigment by mass percent are placed in a constant-temperature reaction kettle, and are stirred at a slow speed for 120-;
s3, then putting 14-17% of absolute ethyl alcohol and all functional fillers into the constant-temperature reaction kettle in the S1 according to the mass percentage to be mixed, and then stirring at a medium speed for 80-100min to prepare a mixture B;
and S4, finally putting all the residual deionized water and absolute ethyl alcohol into a constant-temperature reaction kettle, diluting, and stirring at a high speed for 30-45min to obtain the flexible water-based white ink.
Preferably, in S1, raw materials for production include, by mass, 25.8% deionized water, 20.5% absolute ethanol, 19% acrylic emulsion, 0.1% defoamer, 9.6% pigment, and 25% functional filler.
As an example, in S1, 23.8 mass% of deionized water as a raw material for production, 19.5 mass% of absolute ethyl alcohol, 21 mass% of acrylic emulsion, 0.3 mass% of a defoaming agent, 9.5 mass% of a pigment, and 25.9 mass% of a functional filler are prepared.
As an example, in S1, raw materials for production, deionized water 24.8%, absolute ethyl alcohol 20%, acrylic emulsion 20%, defoaming agent 0.2%, pigment 10%, and functional filler 25% are prepared by mass%.
As an example, the antifoaming agent in S1 is octamethylcyclotetrasiloxane.
Preferably, the titanium dioxide is nano-scale titanium dioxide, and the particle diameter of the kaolin is less than 0.5 μm.
Preferably, the concentration of the absolute ethyl alcohol is more than 99.5 wt%.
Preferably, the temperature range of the constant temperature reaction kettle is 42-45 ℃.
Preferably, the rotation speed of the slow stirring in the S2 is set to be 80-120 r/min; the rotation speed of the medium-speed stirring in S3 is set to be 400r/min and the rotation speed of the high-speed stirring in S4 is set to be 800r/min and 600-.
Compared with the prior art, the invention has the following advantages:
1. when the flexographic aqueous white ink is used, the adhesive property of the aqueous white ink can be improved by utilizing the adhesive force of kaolin, the drying speed of the aqueous white ink is improved, and the problems that the flexographic aqueous white ink is easy to fall off and is slow in drying speed when being used on candies or food plastic packaging bags in the prior art are solved.
2. The flexible water-based white ink provided by the invention has no components with pungent odor such as ammonia water during preparation, and avoids pollution of a working environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of flexographic water-based white ink comprises the following steps:
s1, preparing raw materials for production according to mass percent: 25.8% of deionized water, 20.5% of absolute ethyl alcohol, 19% of acrylic emulsion, 0.1% of defoaming agent, 9.6% of pigment and 25% of functional filler;
s2, firstly, placing 18-21% of deionized water, all acrylic emulsion, a defoaming agent and pigment in a constant-temperature reaction kettle according to the mass percentage, and slowly stirring for 120min to obtain a mixture A; the rotating speed of the slow stirring is set to be 120 r/min;
s3, then putting 14-17% of absolute ethyl alcohol and all functional fillers into the constant-temperature reaction kettle in the S1 according to the mass percentage to be mixed, and then stirring at a medium speed for 80min to prepare a mixture B; the rotating speed of the medium-speed stirring is set to be 400 r/min;
s4, finally putting all the residual deionized water and absolute ethyl alcohol into a constant-temperature reaction kettle, diluting, and stirring at a high speed for 45min, wherein the rotating speed of the high-speed stirring is set to be 800 r/min; and (5) after stirring is finished, preparing the flexible water-based white ink.
The acrylic emulsion is styrene-acrylic acid copolymer, the defoaming agent is octamethylcyclotetrasiloxane, the pigment is titanium dioxide, the functional filler is kaolin, the titanium dioxide is nano-scale titanium dioxide, and the particle diameter of the kaolin is less than 0.5 mu m. The concentration of the absolute ethyl alcohol is more than 99.5%. The temperature range of the constant temperature reaction kettle is 42-45 ℃.
Example 2
A preparation method of flexographic water-based white ink comprises the following steps:
s1, preparing raw materials for production according to mass percent: 23.8% of deionized water, 19.5% of absolute ethyl alcohol, 21% of acrylic emulsion, 0.3% of defoaming agent, 9.5% of pigment and 25.9% of functional filler;
s2, firstly, 18-21% of deionized water, all acrylic emulsion, antifoaming agent and pigment by mass percent are placed in a constant-temperature reaction kettle, and are stirred at a slow speed for 120-; the rotating speed of the slow stirring is set to be 80-120 r/min;
s3, then putting 14-17% of absolute ethyl alcohol and all functional fillers into the constant-temperature reaction kettle in the S1 according to the mass percentage to be mixed, and then stirring at a medium speed for 100min to prepare a mixture B; the rotating speed of the medium-speed stirring is set to be 300 r/min;
s4, finally putting all the residual deionized water and absolute ethyl alcohol into a constant-temperature reaction kettle, diluting, and stirring at a high speed for 30min, wherein the rotating speed of the high-speed stirring is set to be 600 r/min; and (5) after stirring is finished, preparing the flexible water-based white ink.
The acrylic emulsion is styrene-acrylic acid copolymer, the defoaming agent is octamethylcyclotetrasiloxane, the pigment is titanium dioxide, the functional filler is kaolin, the titanium dioxide is nano-scale titanium dioxide, and the particle diameter of the kaolin is less than 0.5 mu m. The concentration of the absolute ethyl alcohol is more than 99.5%. The temperature range of the constant temperature reaction kettle is 42-45 ℃.
Example 3
A preparation method of flexographic water-based white ink comprises the following steps:
s1, preparing raw materials for production according to mass percent: 24.8% of deionized water, 20% of absolute ethyl alcohol, 20% of acrylic emulsion, 0.2% of defoaming agent, 10% of pigment and 25% of functional filler;
s2, firstly, 18-21% of deionized water, all acrylic emulsion, antifoaming agent and pigment by mass percent are placed in a constant-temperature reaction kettle, and are stirred at a slow speed for 120-; the rotating speed of the slow stirring is set to be 80-120 r/min;
s3, then putting 14-17% of absolute ethyl alcohol and all functional fillers into the constant-temperature reaction kettle in the S1 according to the mass percentage to be mixed, and then stirring at a medium speed for 80-100min to prepare a mixture B; the rotating speed of the medium-speed stirring is set to be 300-400 r/min;
s4, finally putting all the residual deionized water and absolute ethyl alcohol into a constant-temperature reaction kettle for dilution, and stirring at a high speed for 30-45min, wherein the rotating speed of the high-speed stirring is set to be 600-800 r/min; and (5) after stirring is finished, preparing the flexible water-based white ink.
The acrylic emulsion is styrene-acrylic acid copolymer, the defoaming agent is octamethylcyclotetrasiloxane, the pigment is titanium dioxide, the functional filler is kaolin, the titanium dioxide is nano-scale titanium dioxide, and the particle diameter of the kaolin is less than 0.5 mu m. The concentration of the absolute ethyl alcohol is more than 99.5%. The temperature range of the constant temperature reaction kettle is 42-45 ℃.
The performance parameter detection data of the aqueous white ink prepared in examples 1-3 of the present invention are as follows:
in summary, the following steps: when the flexible water-based white ink is used, the adhesive bonding property of the water-based white ink can be improved by utilizing the bonding force of kaolin, the peel strength reaches over 8 newtons, the peel strength of the white ink in CN101003703B is 5-6 newtons, and the problem that the flexible water-based white ink is easy to fall off when being used on candies or plastic packaging bags for foods in the prior art is solved. The flexible water-based white ink provided by the invention has no components with pungent odor such as ammonia water during preparation, and avoids pollution of a working environment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A preparation method of flexible water-based white ink is characterized by comprising the following steps: the method comprises the following steps:
s1, preparing raw materials for production according to mass percent: 23.8 to 25.8 percent of deionized water, 19.5 to 20.5 percent of absolute ethyl alcohol, 19 to 21 percent of acrylic emulsion, 0.1 to 0.3 percent of defoaming agent, 9.5 to 10.5 percent of pigment and 24 to 26 percent of functional filler; the acrylic emulsion is styrene-acrylic acid copolymer, the pigment is titanium dioxide, and the functional filler is kaolin;
s2, firstly, 18-21% of deionized water, all acrylic emulsion, antifoaming agent and pigment by mass percent are placed in a constant-temperature reaction kettle, and are stirred at a slow speed for 120-;
s3, then putting 14-17% of absolute ethyl alcohol and all functional fillers into the constant-temperature reaction kettle in the S1 according to the mass percentage to be mixed, and then stirring at a medium speed for 80-100min to prepare a mixture B;
and S4, finally, putting all the residual deionized water and absolute ethyl alcohol into a constant-temperature reaction kettle, diluting, and stirring at a high speed for 30-45min to obtain the flexographic aqueous white ink.
2. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: in the S1, raw materials for production, namely 25.8% of deionized water, 20.5% of absolute ethyl alcohol, 19% of acrylic emulsion, 0.1% of defoaming agent, 9.6% of pigment and 25% of functional filler are prepared according to mass percentage.
3. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: in the S1, 23.8% of deionized water, 19.5% of absolute ethyl alcohol, 21% of acrylic emulsion, 0.3% of defoaming agent, 9.5% of pigment and 25.9% of functional filler are prepared according to mass percentage.
4. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: in the S1, raw materials for production, namely deionized water 24.8%, absolute ethyl alcohol 20%, acrylic emulsion 20%, a defoaming agent 0.2%, a pigment 10% and a functional filler 25% are prepared according to mass percentage.
5. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: the defoaming agent in the S1 is octamethylcyclotetrasiloxane.
6. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: the titanium dioxide is nano-scale titanium dioxide, and the particle diameter of the kaolin is less than 0.5 mu m.
7. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: the temperature range of the constant temperature reaction kettle is 42-45 ℃.
8. The method for preparing a flexographic aqueous white ink according to claim 1, characterized in that: the rotating speed of the slow stirring in the S2 is set to be 80-120 r/min; the rotation speed of the medium-speed stirring in S3 is set to be 400r/min and the rotation speed of the high-speed stirring in S4 is set to be 800r/min and 600-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201257.2A CN110760218A (en) | 2019-11-29 | 2019-11-29 | Preparation method of flexographic water-based white ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201257.2A CN110760218A (en) | 2019-11-29 | 2019-11-29 | Preparation method of flexographic water-based white ink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110760218A true CN110760218A (en) | 2020-02-07 |
Family
ID=69340287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911201257.2A Pending CN110760218A (en) | 2019-11-29 | 2019-11-29 | Preparation method of flexographic water-based white ink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110760218A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760077A (en) * | 2009-12-30 | 2010-06-30 | 东莞市英科水墨有限公司 | Aqueous diphenyl-ethylene paper cup flexographic printing ink and preparation method thereof |
| CN105062208A (en) * | 2015-08-04 | 2015-11-18 | 山东布瑞特油墨有限公司 | Flexographic plate water-based ink for high-speed printing and preparation method thereof |
| CN106928771A (en) * | 2017-05-02 | 2017-07-07 | 江苏唐彩油墨科技股份有限公司 | A kind of water-based flexographic ink printed with cork paper for cigarette and preparation method thereof |
| CN107880646A (en) * | 2017-12-08 | 2018-04-06 | 湖北黄鹤楼特色包装材料有限公司 | A kind of water-based ink |
| CN110128875A (en) * | 2019-05-21 | 2019-08-16 | 北京化工大学 | A kind of novel flexographic printing water-based ink binder self-crossing emulsion and preparation method thereof |
-
2019
- 2019-11-29 CN CN201911201257.2A patent/CN110760218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760077A (en) * | 2009-12-30 | 2010-06-30 | 东莞市英科水墨有限公司 | Aqueous diphenyl-ethylene paper cup flexographic printing ink and preparation method thereof |
| CN105062208A (en) * | 2015-08-04 | 2015-11-18 | 山东布瑞特油墨有限公司 | Flexographic plate water-based ink for high-speed printing and preparation method thereof |
| CN106928771A (en) * | 2017-05-02 | 2017-07-07 | 江苏唐彩油墨科技股份有限公司 | A kind of water-based flexographic ink printed with cork paper for cigarette and preparation method thereof |
| CN107880646A (en) * | 2017-12-08 | 2018-04-06 | 湖北黄鹤楼特色包装材料有限公司 | A kind of water-based ink |
| CN110128875A (en) * | 2019-05-21 | 2019-08-16 | 北京化工大学 | A kind of novel flexographic printing water-based ink binder self-crossing emulsion and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101029194B (en) | Plastic-film water intaglio printing ink | |
| CN103183985B (en) | Water-based printing ink and application thereof | |
| CN102382515B (en) | Environment-friendly, strong acid-resistant, strong base-resistant and steaming-resistant ink and preparation method | |
| CN106497222A (en) | A kind of full water-based plastic flexographic ink and preparation method thereof | |
| CN101020797A (en) | Water-base ink for intaglio printing on aluminium foil and its prepn process and application | |
| CN101665638B (en) | Aquosity optical variable ink and preparing method thereof | |
| CN106590162B (en) | Water-based gravure plastic film surface printing ink and preparation method thereof | |
| CN104672982A (en) | Preparation method of environmentally-friendly water-based ink | |
| CN108264797A (en) | It is a kind of for gravure pearly-lustre varnish of tipping paper and preparation method thereof | |
| CN107880646A (en) | A kind of water-based ink | |
| CN105038403A (en) | Water-based gravure pearly luster varnish and preparation method thereof | |
| TWI789416B (en) | Water-based inks with high renewable content | |
| CN114940843B (en) | High-stability water-based ink with surfactant and preparation method thereof | |
| CN106700723A (en) | Gravure environment-friendly water-based gold-sand printing ink as well as preparation method and application of gravure environment-friendly water-based gold-sand printing ink | |
| CN104031463A (en) | Water-based plastic composite printing ink | |
| CN105131709A (en) | Water-soluble gravure ink and preparation method thereof | |
| CN107556808A (en) | A kind of environmental printing ink and preparation method thereof | |
| CN108060608B (en) | Decorative paper and preparation method thereof | |
| CN105315781B (en) | Aqueous golden ink of a kind of quick-dry type and preparation method thereof | |
| CN110760218A (en) | Preparation method of flexographic water-based white ink | |
| CN104761948A (en) | Water-based white ink for PVC shrink film bottle labels and preparation method thereof | |
| CN104449035A (en) | Water-based ink with condensation prevention capacity | |
| US6379813B1 (en) | Pigmented compositions and articles of manufacture containing same | |
| CN107739553A (en) | A kind of water-based flexographic ink | |
| CN114702855A (en) | Water-based ink with good printability and preparation method thereof |
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 | ||
| CB02 | Change of applicant information |
Address after: 303, 3rd floor, No.1 Haikou 2nd Road, Jinyinhu office, Dongxihu District, Wuhan City, Hubei Province Applicant after: Wuhan danyaxiang Biotechnology Co.,Ltd. Address before: 303, 3rd floor, No.1 Haikou 2nd Road, Jinyinhu office, Dongxihu District, Wuhan City, Hubei Province Applicant before: HUBEI DANYAXIANG BIOLOGICAL TECHNOLOGY Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200207 |