CN111574895A - Metal rusty anticorrosive primer - Google Patents

Metal rusty anticorrosive primer Download PDF

Info

Publication number
CN111574895A
CN111574895A CN201910155471.2A CN201910155471A CN111574895A CN 111574895 A CN111574895 A CN 111574895A CN 201910155471 A CN201910155471 A CN 201910155471A CN 111574895 A CN111574895 A CN 111574895A
Authority
CN
China
Prior art keywords
parts
agent
powder
epoxy resin
rusted
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
Application number
CN201910155471.2A
Other languages
Chinese (zh)
Inventor
蓝伟荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201910155471.2A priority Critical patent/CN111574895A/en
Publication of CN111574895A publication Critical patent/CN111574895A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D133/00Coating 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
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/63Additives non-macromolecular organic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045Sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

A metal rust-containing anticorrosion primer is suitable for rust removal of metal object surface. At present, the metal object has rust and corrosion phenomena, and the metal object can be rusted only by coating rustproof paint after rust removal, the rust removal mode is various, any treatment method has the characteristics of higher difficulty, great environmental pollution, low efficiency and high cost, for example, the treatment in smoke and fire and static electricity or high-altitude areas is more difficult in some oil and gas areas, and the rust removal treatment cannot be carried out at all at corners. The invention can solve the blank of the prior art requirements, does not need rust removal, has no environmental pollution, no burning and explosion point, high efficiency, low cost and convenient construction.

Description

Metal rusty anticorrosive primer
The invention relates to a metal rusted anti-corrosion primer which is suitable for metal objects and does not need to be derusted after the surfaces of the metal objects are rusted.
At present, the metal object has rust and corrosion phenomena, and the metal object can be rusted only by coating rustproof paint after rust removal, the rust removal mode is various, any treatment method has the characteristics of higher difficulty, great environmental pollution, low efficiency and high cost, for example, the treatment in smoke and fire and static electricity or high-altitude areas is more difficult in some oil and gas areas, and the rust removal treatment cannot be carried out at all at corners.
The novel rusted anticorrosive primer which can solve and eliminate the problems of rust removal, no environmental pollution, no burning and explosion point, high efficiency, low cost and convenient construction is urgently needed.
The invention aims to solve the blank of the prior art requirements and provide a novel rusty anticorrosive primer with excellent performance, environmental protection, safety, simple and convenient construction and low cost.
In order to solve the above-mentioned purpose, the invention provides a rusty anticorrosive primer based on the principle that the iron oxide formed by rusting of metal is chemically cured to form a physical isolation protective layer.
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
35-55 parts of epoxy resin modified acrylic emulsion;
10-20 parts of titanium dioxide;
5-10 parts of talcum powder;
10-15 parts of barium sulfate;
10-15 parts of sericite powder;
5-10 parts of common white cement;
5-10 parts of epoxy resin glue powder;
1-3 parts of a propylene glycol antifreezing agent;
1-2 parts of a defoaming agent;
1-2 parts of a wetting dispersant;
1-2 parts of a stabilizer;
1-2 parts of a leveling agent;
1-2 parts of a thickening agent;
1-1.5 parts of adhesion promoter;
1-1.5 parts of a film-forming assistant;
2-3 parts of a preservative;
1-2 parts of a mildew inhibitor;
3-5 parts of color paste.
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
35 parts of epoxy resin modified acrylic emulsion:
10 parts of titanium dioxide;
5 parts of talcum powder;
10 parts of barium sulfate;
10 parts of sericite powder;
5 parts of common white cement;
5 parts of epoxy resin glue powder;
1 part of propylene glycol antifreezing agent;
1 part of a defoaming agent;
1 part of wetting dispersant;
1 part of a stabilizer;
1 part of a leveling agent;
1 part of a thickening agent;
1 part of adhesion promoter;
1 part of a film-forming assistant;
2 parts of a preservative;
1 part of a mildew inhibitor;
3 parts of color paste;
the novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
45 parts of epoxy resin modified acrylic emulsion;
15 parts of titanium dioxide;
7.5 parts of talcum powder;
12.5 parts of barium sulfate;
12.5 parts of sericite powder;
7.5 parts of common white cement;
7.5 parts of epoxy resin glue powder;
2 parts of propylene glycol antifreezing agent;
1.5 parts of a defoaming agent;
1.5 parts of wetting dispersant;
1.5 parts of a stabilizer;
1.5 parts of a leveling agent;
1.5 parts of a thickening agent;
1.25 parts of adhesion promoter;
1.25 parts of a film-forming assistant;
2.5 parts of a preservative;
1.5 parts of a mildew inhibitor;
4 parts of color paste.
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
55 parts of epoxy resin modified acrylic emulsion:
20 parts of titanium dioxide;
10 parts of talcum powder;
15 parts of barium sulfate;
15 parts of sericite powder;
10 parts of common white cement;
10 parts of epoxy resin rubber powder;
3 parts of propylene glycol antifreezing agent;
2 parts of a defoaming agent;
2 parts of wetting dispersant;
2 parts of a stabilizer;
2 parts of a leveling agent;
2 parts of a thickening agent;
1.5 parts of adhesion promoter;
1.5 parts of a film-forming assistant;
3 parts of a preservative;
2 parts of a mildew inhibitor;
5 parts of color paste.
Detailed Description
Example 1
A novel metal rusted anti-corrosion primer is characterized in that: the paint is prepared from epoxy resin modified acrylic emulsion, titanium dioxide, talcum powder, barium sulfate, sericite powder, ordinary white cement, cyclic resin rubber powder, a propylene glycol anti-freezing agent, a defoaming agent, a wetting dispersant, a stabilizer, a leveling agent, a thickening agent, an adhesion promoter, a film-forming assistant, a preservative, a mildew preventive and color paste.
Example 2
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
35-55 parts of epoxy resin modified acrylic emulsion:
10-20 parts of titanium dioxide;
5-10 parts of talcum powder;
10-15 parts of barium sulfate;
10-15 parts of sericite powder;
5-10 parts of common white cement;
5-10 parts of epoxy resin glue powder;
1-3 parts of a propylene glycol antifreezing agent;
1-2 parts of a defoaming agent;
1-2 parts of a wetting dispersant;
1-2 parts of a stabilizer;
1-2 parts of a leveling agent;
1-2 parts of a thickening agent;
1-1.5 parts of adhesion promoter;
1-1.5 parts of a film-forming assistant;
2-3 parts of a preservative;
1-2 parts of a mildew inhibitor;
3-5 parts of color paste.
Example 3
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
35 parts of epoxy resin modified acrylic emulsion:
10 parts of titanium dioxide;
5 parts of talcum powder;
10 parts of barium sulfate;
10 parts of sericite powder;
5 parts of common white cement;
5 parts of epoxy resin glue powder;
1 part of propylene glycol antifreezing agent;
1 part of a defoaming agent;
1 part of wetting dispersant;
1 part of a stabilizer;
1 part of a leveling agent;
1 part of a thickening agent;
1 part of adhesion promoter;
1 part of a film-forming assistant;
2 parts of a preservative;
1 part of a mildew inhibitor;
and 3 parts of color paste.
Example 4
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
45 parts of epoxy resin modified acrylic emulsion:
15 parts of titanium dioxide;
7.5 parts of talcum powder;
12.5 parts of barium sulfate;
12.5 parts of sericite powder;
7.5 parts of common white cement;
7.5 parts of epoxy resin glue powder;
2 parts of propylene glycol antifreezing agent;
1.5 parts of a defoaming agent;
1.5 parts of wetting dispersant;
1.5 parts of a stabilizer;
1.5 parts of a leveling agent;
1.5 parts of a thickening agent;
1.25 parts of adhesion promoter;
1.25 parts of a film-forming assistant;
2.5 parts of a preservative;
1.5 parts of a mildew inhibitor;
4 parts of color paste.
Example 5
The novel rusty anticorrosive primer is characterized by comprising the following components in parts by mass:
55 parts of epoxy resin modified acrylic emulsion;
20 parts of titanium dioxide;
10 parts of talcum powder;
15 parts of barium sulfate;
15 parts of sericite powder;
10 parts of common white cement;
10 parts of epoxy resin rubber powder;
3 parts of propylene glycol antifreezing agent;
2 parts of a defoaming agent;
2 parts of wetting dispersant;
2 parts of a stabilizer;
2 parts of a leveling agent;
2 parts of a thickening agent;
1.5 parts of adhesion promoter;
1.5 parts of a film-forming assistant;
3 parts of a preservative;
2 parts of a mildew inhibitor;
5 parts of color paste.

Claims (5)

1. A novel metal rusted anti-corrosion primer is characterized in that: the paint is prepared from epoxy resin modified acrylic emulsion, titanium dioxide, talcum powder, barium sulfate, sericite powder, ordinary white cement, cyclic resin rubber powder, a propylene glycol anti-freezing agent, a defoaming agent, a wetting dispersant, a stabilizer, a leveling agent, a thickening agent, an adhesion promoter, a film-forming assistant, a preservative, a mildew preventive and color paste.
2. The novel metal rusted anticorrosive primer according to claim 1, which is prepared from the following components in parts by mass:
35-55 parts of epoxy resin modified acrylic emulsion;
10-20 parts of titanium dioxide;
5-10 parts of talcum powder;
10-15 parts of barium sulfate;
10-15 parts of sericite powder;
5-10 parts of common white cement;
5-10 parts of epoxy resin glue powder;
1-3 parts of a propylene glycol antifreezing agent;
1-2 parts of a defoaming agent;
1-2 parts of a wetting dispersant;
1-2 parts of a stabilizer;
1-2 parts of a leveling agent;
1-2 parts of a thickening agent;
1-1.5 parts of adhesion promoter;
1-1.5 parts of a film-forming assistant;
2-3 parts of a preservative;
1-2 parts of a mildew inhibitor;
3-5 parts of color paste.
3. The novel metal rusted anticorrosive primer according to claim 1, characterized in that: the composition comprises the following components in parts by weight:
35 parts of epoxy resin modified acrylic emulsion;
10 parts of titanium dioxide;
5 parts of talcum powder;
10 parts of barium sulfate;
10 parts of sericite powder;
5 parts of common white cement;
5 parts of epoxy resin glue powder;
1 part of propylene glycol antifreezing agent;
1 part of a defoaming agent;
1 part of wetting dispersant;
1 part of a stabilizer;
1 part of a leveling agent;
1 part of a thickening agent;
1 part of adhesion promoter;
1 part of a film-forming assistant;
2 parts of a preservative;
1 part of a mildew inhibitor;
and 3 parts of color paste.
4. The novel metal rusted anticorrosive primer according to claim 1, characterized in that: the composition comprises the following components in parts by weight:
45 parts of epoxy resin modified acrylic emulsion;
15 parts of titanium dioxide;
7.5 parts of talcum powder;
12.5 parts of barium sulfate;
12.5 parts of sericite powder;
7.5 parts of common white cement;
7.5 parts of epoxy resin glue powder;
2 parts of propylene glycol antifreezing agent;
1.5 parts of a defoaming agent;
1.5 parts of wetting dispersant;
1.5 parts of a stabilizer;
1.5 parts of a leveling agent;
1.5 parts of a thickening agent;
1.25 parts of adhesion promoter;
1.25 parts of a film-forming assistant;
2.5 parts of a preservative;
1.5 parts of a mildew inhibitor;
4 parts of color paste.
5. The novel metal rusted anticorrosive primer according to claim 1, characterized in that: the composition comprises the following components in parts by weight:
55 parts of epoxy resin modified acrylic emulsion;
20 parts of titanium dioxide;
10 parts of talcum powder;
15 parts of barium sulfate;
15 parts of sericite powder;
10 parts of common white cement;
10 parts of epoxy resin rubber powder;
3 parts of propylene glycol antifreezing agent;
2 parts of a defoaming agent;
2 parts of wetting dispersant;
2 parts of a stabilizer;
2 parts of a leveling agent;
2 parts of a thickening agent;
1.5 parts of adhesion promoter;
1.5 parts of a film-forming assistant;
3 parts of a preservative;
2 parts of a mildew inhibitor;
5 parts of color paste.
CN201910155471.2A 2019-02-18 2019-02-18 Metal rusty anticorrosive primer Pending CN111574895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910155471.2A CN111574895A (en) 2019-02-18 2019-02-18 Metal rusty anticorrosive primer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910155471.2A CN111574895A (en) 2019-02-18 2019-02-18 Metal rusty anticorrosive primer

Publications (1)

Publication Number Publication Date
CN111574895A true CN111574895A (en) 2020-08-25

Family

ID=72120692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910155471.2A Pending CN111574895A (en) 2019-02-18 2019-02-18 Metal rusty anticorrosive primer

Country Status (1)

Country Link
CN (1) CN111574895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112375411A (en) * 2020-10-30 2021-02-19 中科院广州化灌工程有限公司 Epoxy modified polymer cement anticorrosive paint and preparation method and application thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004299979A (en) * 2003-03-31 2004-10-28 Railway Technical Res Inst Surface preparation material for steel and method of surface- preparation
CN101362920A (en) * 2008-09-08 2009-02-11 李少香 Anticorrosion coating material
CN101407697A (en) * 2008-11-21 2009-04-15 新郑市正信涂料有限公司 Double-component waterproof coating material and uses thereof
CN101864236A (en) * 2010-07-02 2010-10-20 湖南湘江涂料集团有限公司 Aqueous acrylic modified epoxy ester primer-topcoat integrated anticorrosive baking finish
CN102491680A (en) * 2011-12-07 2012-06-13 中国铁道科学研究院铁道建筑研究所 Modified acrylic resin mortar composition and preparation method thereof
CN104789055A (en) * 2015-05-04 2015-07-22 中国建筑股份有限公司 Monolayer-structured polymer-modified cement-based cooling and waterproofing coating material and preparation method thereof
CN104926231A (en) * 2015-06-01 2015-09-23 刘志勇 Anti-rust protective coating for steel material and preparation method of anti-rust protective coating
CN105062281A (en) * 2015-08-17 2015-11-18 惠州东方雨虹建筑材料有限责任公司 I-type environment-friendly two-component polymer cement waterproof paint and preparation method
JP2017013474A (en) * 2015-07-07 2017-01-19 アサヒボンド工業株式会社 Aqueous anticorrosive coating and aqueous anticorrosive coating method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004299979A (en) * 2003-03-31 2004-10-28 Railway Technical Res Inst Surface preparation material for steel and method of surface- preparation
CN101362920A (en) * 2008-09-08 2009-02-11 李少香 Anticorrosion coating material
CN101407697A (en) * 2008-11-21 2009-04-15 新郑市正信涂料有限公司 Double-component waterproof coating material and uses thereof
CN101864236A (en) * 2010-07-02 2010-10-20 湖南湘江涂料集团有限公司 Aqueous acrylic modified epoxy ester primer-topcoat integrated anticorrosive baking finish
CN102491680A (en) * 2011-12-07 2012-06-13 中国铁道科学研究院铁道建筑研究所 Modified acrylic resin mortar composition and preparation method thereof
CN104789055A (en) * 2015-05-04 2015-07-22 中国建筑股份有限公司 Monolayer-structured polymer-modified cement-based cooling and waterproofing coating material and preparation method thereof
CN104926231A (en) * 2015-06-01 2015-09-23 刘志勇 Anti-rust protective coating for steel material and preparation method of anti-rust protective coating
JP2017013474A (en) * 2015-07-07 2017-01-19 アサヒボンド工業株式会社 Aqueous anticorrosive coating and aqueous anticorrosive coating method
CN105062281A (en) * 2015-08-17 2015-11-18 惠州东方雨虹建筑材料有限责任公司 I-type environment-friendly two-component polymer cement waterproof paint and preparation method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
许奕祥等: "扶梯专用底面合一水性自干防腐涂料的制备", 《涂料工业》 *
陈民桥: "《涂装病态防治手册》", 30 April 1992, 中国建筑工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112375411A (en) * 2020-10-30 2021-02-19 中科院广州化灌工程有限公司 Epoxy modified polymer cement anticorrosive paint and preparation method and application thereof

Similar Documents

Publication Publication Date Title
KR101170794B1 (en) Coating method of steel using heavy duty paint
CN104559365A (en) Building corrosion preventing composite coating
CN105413993A (en) Steel structure fluorocarbon paint coating process
CN111574895A (en) Metal rusty anticorrosive primer
CN104762000A (en) Salt-spray resistant water-borne container and environment-friendly metallic paint thereof
CN104387860A (en) Water-based anticorrosive metal coating
CN114213910A (en) Corrosion-resistant heavy-duty anticorrosive paint
CN102993885A (en) Zinc powder-free water-based primer
CN106433381A (en) Antirust paint
CN105017921A (en) Oily-to-aqueous epoxy anti-rust prime coat and preparation method thereof
CN1126743A (en) Special antirust anticorrosive paint HCPE
KR101658372B1 (en) Eco-friendly anticorrosive coating composition and method of forming anticorrosion layer using the anticorrosive coating composition
CN104927521A (en) Antirust paint
EP1396555A1 (en) A non-chromate protective coating for iron and iron alloys and coating solution
CN103665981A (en) Anticorrosive paint containing acrylic emulsion
CN106085185A (en) A kind of environmental protection equipment anticorrosion paint special
CN104559637A (en) Anticorrosive and antirust paint for metal
CN211036060U (en) Thermal spraying rare earth alloy composite coating reinforcing steel bar
CN210946451U (en) Full-aqueous heavy anti-corrosion coating structure for bridge
CN103897530A (en) Rust-resisting paint
CN105017931A (en) Water-based epoxy ester antirust primer
CN1057314C (en) Double-component antirot zinc silicate paint and its use
CN101747669A (en) Water-based weldable inorganic zinc-rich primer and preparation method thereof
CN106280818A (en) A kind of organic silicon acrylic ester base water-based anticorrosive paint
CN112574652A (en) Water paint formula

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
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200825

WD01 Invention patent application deemed withdrawn after publication