LU102739B1 - A Two-component Epoxy Waterborne Container Anticorrosive Coating - Google Patents
A Two-component Epoxy Waterborne Container Anticorrosive Coating Download PDFInfo
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- LU102739B1 LU102739B1 LU102739A LU102739A LU102739B1 LU 102739 B1 LU102739 B1 LU 102739B1 LU 102739 A LU102739 A LU 102739A LU 102739 A LU102739 A LU 102739A LU 102739 B1 LU102739 B1 LU 102739B1
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- waterborne
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- epoxy
- emulsion
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Classifications
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- 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
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
Abstract
The invention relates to the field of new materials, and specifically discloses a two-component epoxy waterborne container anticorrosive coating, which includes two components A and B. Among them, the A component is composed of waterborne epoxy ester or one-component acrylic emulsion, emulsion epoxy curing agent, film forming aid, pigment and filler, anti-rust pigment, deionized water, dispersing agent, wetting agent, and PH regulator, thickener, anti-flash rust agent and preservative composition. The component B is composed of waterborne epoxy emulsion, film forming aid and wetting agent; when used, the weight ratio of the two components A and B is 4:1. The anti-corrosion paint with this composition can be used as a container inner top paint or intermediate paint. The toughness of the paint can be adjusted. It has the advantages of strong practicability, good construction, low cost, excellent anti-corrosion performance and environmental friendliness, and it can quickly realize industrialized production.
Description
Description LU102739 A Two-component Epoxy Waterborne Container Anticorrosive Coating Technical Field The invention relates to the field of materials, in particular to a two-component epoxy waterborne container anticorrosive coating.
Background Technology Our country's container production is the largest in the world, and it needs about 300,000 tons of container coatings each year, which is worth about 5 billion yuan. At present, China's container coatings market is mainly occupied by several companies such as COSCO Kansai and Dulwich Chemical, whose market share exceeds 85%. However, waterborne container coatings, especially waterborne epoxy paints, still have some problems, especially poor toughness and high prices, which greatly hinder their promotion and application. Therefore, it is urgent to improve the performance of waterborne container coatings and reduce costs.
Invention Summary In view of the many problems existing in existing materials, the present invention provides a two-component epoxy waterborne container anticorrosive coating, which includes A and B components. Among them, the component A by weight is: 25-35 parts of waterborne epoxy ester or one-component acrylic emulsion, 5 parts of emulsion epoxy curing agent, 5 parts of film forming aid, 10-15 parts of anti-rust pigment, 35-40 parts of pigment and filler, 15 parts of deionized water,
0.8 parts of dispersant, 0.2 parts of wetting agent, 0.2 parts of PH regulator, 0.6-0.9 parts of thickener, 0.5 parts of anti-flash rust agent, 0.1 parts of preservative. The component B is an aqueous epoxy emulsion; the weight ratio of components A and B is 4:1. The anti-corrosion coating with this composition can be used as container inner topcoat or intermediate paint. The toughness of the coating can be adjusted. It has the advantages of strong practicability, good workability, low cost, excellent anti-corrosion performance and environmental friendliness, and can be quickly realized industrialized production; it has changed the shortcomings of the previous waterborne two-component epoxy coatings of excessive rigidity but insufficient toughness, and expanded the scope of application of waterborne two-component epoxy coatings.
The most important feature of the present invention is to use waterborne epoxy emulsion and waterborne epoxy ester emulsion (or one-component acrylic emulsion) to form a dense coating through cross-linking with the waterborne epoxy curing agent, and the waterborne epoxy ester emulsion (or one-component acrylic emulsion) improves the toughness of the paint film. It has the advantages of strong practicability, good workability, low cost, excellent anti-corrosion performance and environmental friendliness, and it can quickly realize industrial production.
The specific content of the present invention is as follows: A two-component epoxy waterborne container anticorrosive coating, which includes two components, A and B. Among them, in parts by weight: The component A by weight is: 25-35 parts of waterborne epoxy ester or one-component acrylic emulsion, 5 parts of emulsion epoxy curing agent, 5 parts of film forming aid, 10-15 parts of anti-rust pigments, 35-40 parts of pigments and fillers, 15 parts of deionized water, 0.8 parts of 1
Description dispersant, 0.2 parts of wetting agent, 0.2 parts of pH regulator, 0.6-0.9 parts of thickener, 0.5 bli#82739 of anti-flash rust agent, 0.1 parts of preservative.
The component B by weight is: 100 parts of waterborne epoxy emulsion, 4-6 parts of film forming aid, 0.2-0.4 parts of wetting agent; The weight ratio of the two components A and B is 4:1.
The existing conventional epoxy paint is made of epoxy emulsion plus fillers and additives into component A, and the curing agent is component B. This is the conventional thinking in this field. However, the technical solution of this application has completely changed this conventional thinking, it is the first time to use curing agent, filler and auxiliary agent plus waterborne epoxy ester or waterborne one-component acrylic as the component A , and the epoxy emulsion is made into the B component. The present invention prefers the waterborne mono-acrylate or waterborne epoxy ester that can stably exist with the epoxy curing agent, which ensures that the waterborne mono-acrylate or waterborne epoxy ester does not react with the epoxy curing agent before use. The price of waterborne epoxy ester or waterborne one-component acrylic is only half that of epoxy resin. Secondly, waterborne epoxy ester or waterborne one-component acrylic has excellent toughness. Therefore, blending waterborne epoxy ester or waterborne one-component acrylic can obviously reduce the cost of raw materials, and can also improve the toughness of the paint film to meet the requirements of the process. However, since waterborne epoxy ester or waterborne one-component acrylic cannot coexist with epoxy emulsion, it is necessary to combine the waterborne epoxy ester or waterborne one-component acrylic with the curing agent system. Therefore, the preferred method of this application is waterborne mono-acrylate or waterborne epoxy ester that can stably exist with epoxy curing agent.
Accordingly, the inventors prefer that the waterborne epoxy ester is selected from Beijing Sunshine Huide 672A waterborne epoxy ester, and the one-component acrylic emulsion is selected from the Dutch DSM 801 waterborne acrylic emulsion or purchased from Jiaye Tiancheng New Materials SV-535B or SV-545 of Technology Co., Ltd...
The emulsion type epoxy curing agent is selected from Incorez 141, purchased from Industrol Copolymers Limited, UK. After a lot of experiments, the emulsion epoxy curing agent was found to coexist with the above-mentioned alternative waterborne epoxy ester or waterborne one-component acrylic emulsion.
The above-mentioned film forming aid is selected from film forming aid alcohol ester dodecyl, and are purchased from Dow Chemical.
The anti-rust pigment is selected from zinc aluminum tripolyphosphate ZAP-C anti-trust pigment, and purchased from Shisheng Chemical.
The pigments and fillers are selected from titanium dioxide or precipitated barium sulfate.
The dispersing agent is selected from Coadis BR 3, and purchased from French Gaotai Chemical.
The wetting agent is selected from Clariant LCNO88.
The pH adjusting agent is selected from DMEA, and purchased from Hemmings.
The thickener is selected from DeuRheo WT-105A, and purchased from Hemmings.
The anti-flash rust agent is selected from NALZIN FA 179, and purchased from Hemmings.
The preservative is selected from MB531, and purchased from Baoding Sunshine, Hebei Province.
In addition to the above-mentioned alternative substances, other common additives of the same 2
Description kind of waterborne paint can also be used in the technical scheme of the present invention, anë#A22739 inventor will not repeat them here.
The above-mentioned waterborne epoxy emulsion of component B is selected from MU601A, purchased from Shanghai Run Carbon New Materials; or E8117 epoxy emulsion is purchased from Shanghai Handai Chemical; or E6520 epoxy emulsion is purchased from Shanghai Hexion .
The film-forming aid is selected from film forming aid alcohol ester dodecyl, purchased from Dow Chemical.
The wetting agent is selected from Clariant LCNO88.
All the above components are directly purchased on the market.
Among the above components, the waterborne epoxy emulsion and the waterborne epoxy ester emulsion (or single-component acrylic emulsion) are cross-linked with the waterborne epoxy curing agent to form a dense coating, and the waterborne epoxy ester emulsion ( or single-component acrylic emulsion) improves the toughness of the coating film. It has the advantages of strong practicability, good construction, low cost, excellent anti-corrosion performance and environmental friendliness, and can quickly realize industrialized production.
The emulsion type waterborne epoxy curing agent used has the properties of fast drying speed and excellent anti-corrosion performance. At the same time, it also helps to improve the toughness of the paint film.
The non-toxic and environmentally friendly waterborne pigments and fillers used are characterized by good salt spray resistance, high chemical stability and good weather resistance.
The preservative used has good compatibility with the formula, good pH and light stability, it has no effect on the color and the rheological ability of the liquid, has high activity on molds and algae, and can prevent the growth of fungi on the coating.
The selection of the above-mentioned various additives and the main components can meet the requirements of the waterborne container paint. It has the characteristics of good storage stability, good film-forming performance, good water and weather resistance, and good anti-corrosion performance.
In addition, the inventor also provided the preparation process of the above-mentioned two-component epoxy waterborne container anticorrosive coating, and the specific steps are as follows: Preparation of component A: (1) The prescription amount of dispersant, wetting agent, pH regulator, anti-flash rust agent and preservative are added to deionized water for uniform dispersion, and under stirring, anti-rust pigments and pigments are added in sequence. It is evenly dispersed and ground to a fineness of <30um.
(2) The waterborne epoxy ester or one-component acrylic emulsion and the emulsion epoxy curing agent are uniformly dispersed, and the film forming aid is added under stirring. After being uniformly dispersed, the ground (1) slurry is added, and be evenly dispersed.
(3) It is adjusted to standard viscosity with thickener, (it is coated-4 cups, 80-100 seconds).
Preparation of component B The film forming aid and wetting agent will be added to the waterborne epoxy emulsion, and it is enough to be uniformly dispersed.
The above-mentioned dispersions are all dispersed by a high-speed dispersing machine.
When used, mix it according to the weight ratio of the two components A and B of 4:1.
3
Description Compared with the prior art, the advantages of the present invention are: LU102739 For the first time in this field, the waterborne mono-acrylate or waterborne epoxy ester that is stable with the epoxy curing agent is selected to ensure that the waterborne mono-acrylate or waterborne epoxy ester does not react with the epoxy curing agent before use; while the price of waterborne epoxy ester or waterborne one-component acrylic is only half that of epoxy resin. Secondly, waterborne epoxy ester or waterborne one-component acrylic has excellent toughness. Therefore, blending waterborne epoxy ester or waterborne one-component acrylic can obviously reduce the cost of raw materials, improve the toughness of the paint film to meet the requirements of the process, so that the final epoxy paint film of 50cm.kg forward and 20cm.kg backward meet the standard. Detailed Description of the Presently Preferred Embodiments The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those technicians in the field, so as to make a clearer and clearer definition of the protection scope of the present invention. Except for special instructions, all the existing technologies are used. Embodiment 1 A two-component epoxy waterborne container anticorrosive coating includes two components A and B. Among them, the component A by weight is:
1. Waterborne epoxy ester 672A: 25 parts
2. Emulsion type epoxy curing agent Incorez141: 5 parts
3. Film forming aid alcohol ester dodecyl: 5 parts
4. Titanium dioxide: 10 parts
5. Precipitated barium sulfate: 30 parts
6. Anti-trust pigment ZAP-C: 15 parts
7. Deionized water: 15 parts
8. Dispersant Coadis BR 3: 0.8 parts
9. Wetting agent Clariant LCNO88: 0.2 parts
10. PH regulator DMEA: 0.2 parts
11. Anti-flash rust agent NALZIN FA 179: 0.5 parts
12. Preservative MB531: 0.1 parts
13. Thickener DeuRheo WT-105A: 0.8 parts The component B by weight is:
1. Water-based epoxy emulsion MU601A: 100 parts
2. Film forming aid alcohol ester dodecyl: 4 parts
3. Wetting agent Clariant LCNO88: 0.2 parts; The specific steps of the preparation process of the above two-component epoxy waterborne container anticorrosive coating are as follows: Preparation of component A: (1) The prescription amount of dispersant, wetting agent, pH regulator, anti-flash rust agent and preservative are added to deionized water for uniform dispersion, and under stirring, anti-rust pigments and pigments are added in sequence. It is evenly dispersed and ground to a fineness of <30um.
4
Description (2) The waterborne epoxy ester or one-component acrylic emulsion and the emulsion epb§2739 curing agent are uniformly dispersed, and the film forming aid is added under stirring. After being uniformly dispersed, the ground (1) slurry is added, and be evenly dispersed. (3) It is adjusted to standard viscosity with thickener, it is coated-4 cups, 80-100 seconds.
Preparation of component B The film forming aid and wetting agent will be added to the waterborne epoxy emulsion, and it is enough to be uniformly dispersed.
The above-mentioned dispersions are all dispersed by a high-speed dispersing machine; generally, it can be dispersed at 1000 rpm for 20 minutes to achieve the purpose of uniform dispersion; When used, mix it according to the ratio of A:B=4:1 Embodiment 2 A two-component epoxy waterborne container anticorrosive coating includes two components A and B. Among them, the component A by weight is:
1. DSM 801 water-based acrylic emulsion: 25 parts
2. Emulsion type epoxy curing agent Incorez141: 5 parts
3. Film forming aid alcohol ester dodecyl: 5 parts
4. Titanium dioxide: 10 parts
5. Precipitated barium sulfate: 30 parts
6. Anti-trust pigment ZAP-C: 15 parts
7. Deionized water: 15 parts
8. Dispersant Coadis BR 3: 0.8 parts
9. Wetting agent Clariant LCNO88: 0.2 parts
10. PH regulator DMEA: 0.2 parts
11. Anti-flash rust agent NALZIN FA 179: 0.5 parts
12. Preservative MB531: 0.1 parts
13. Thickener DeuRheo WT-105A: 0.8 parts The component B by weight is:
1. Water-based epoxy emulsion MU601A: 100 parts
2. Film forming aid alcohol ester dodecyl: 4 parts
3. Wetting agent Clariant LCNO88: 0.2 parts; The specific steps of the preparation process of the above two-component epoxy waterborne container anticorrosive coating are as follows: Preparation of component A: (1) The prescription amount of dispersant, wetting agent, pH regulator, anti-flash rust agent and preservative are added to deionized water for uniform dispersion, and under stirring, anti-rust pigments and pigments are added in sequence. It is evenly dispersed and ground to a fineness of <30um.
Description (2) The waterborne epoxy ester or one-component acrylic emulsion and the emulsion epb§2739 curing agent are uniformly dispersed, and the film forming aid is added under stirring. After being uniformly dispersed, the ground (1) slurry is added, and be evenly dispersed. (3) It is adjusted to standard viscosity with thickener, it is coated-4 cups, 80-100 seconds.
Preparation of component B The film forming aid and wetting agent will be added to the waterborne epoxy emulsion, and it is enough to be uniformly dispersed.
The above-mentioned dispersions are all dispersed by a high-speed dispersing machine; generally, it can be dispersed at 1000 rpm for 20 minutes to achieve the purpose of uniform dispersion; When used, mix it according to the ratio of A:B=4:1 Embodiment 3 The performance of the container waterborne epoxy coating of Embodiments 1 and Embodiments 2 combined with the waterborne epoxy zinc-rich coating (a product known in the prior art center) and the waterborne acrylic coating system (a product known in the prior art), the test results of the product single film performance are shown in the following table: Testiems | Claim eT | Salt spray | >600h 800h Pass 800h Pass GB/T1771-1991 i, TOONS Adhesion <1 GB/T9286 (cross-cut method) (level) Impact Forward > | Forward 50 and | Forward 50 and | GB/T1732-93 resistance 50; backward 20 | backward 20 are (cm.kg) Backward> | are passed passed Impact Forward > | Forward 55 and | Forward 60 and | GB/T1732-93 resistance 50; backward 20 | backward 20 are (cm.kg) Backward> | are passed passed 20 (g/L) Tack-free time | <120 15 15 GB/T1728-89 Ei SS (ET The waterborne container anticorrosive coating prepared according to the present invention has adjustable toughness of the coating film. It has excellent workability, environmental protection, abrasion resistance, acid and alkali resistance, and solvent resistance, and its paint film has good antibacterial and mildew resistance, strong hiding power, good chemical stability, and excellent salt 6
Description spray resistance.
LU102739 The above-mentioned embodiments of the present invention are examples to illustrate the present invention more clearly, and are not intended to limit the implementation of the present invention. 7
Claims (4)
1. A two-component epoxy waterborne container anticorrosive coating, which includes two components A and B, and is characterized in that: in parts by weight: The component A by weight is: 25-35 parts of waterborne epoxy ester or one-component acrylic emulsion, 5 parts of emulsion epoxy curing agent, 5 parts of film forming aid, 10-15 parts of anti-rust pigments, 35-40 parts of pigments and fillers, 15 parts of deionized water, 0.8 parts of dispersant, 0.2 parts of wetting agent, 0.2 parts of pH regulator, 0.6-0.9 parts of thickener, 0.5 parts of anti-flash rust agent, 0.1 parts of preservative.
The component B by weight is: 100 parts of waterborne epoxy emulsion, 4-6 parts of film forming aid, 0.2-0.4 parts of wetting agent; The weight ratio of the two components A and B is 4:1.
2. According to Claim 1, the two-component epoxy waterborne container anticorrosive coating is characterized in that: The waterborne epoxy ester in the component A is selected from Beijing Sunshine Huide 672A waterborne epoxy ester, and the one-component acrylic emulsion is selected from the Netherlands DSM 801 waterborne acrylic emulsion or SV-535B or SV-545.
The emulsion epoxy curing agent is selected from Incorez141.
The film forming aid is selected from the group consisting of film forming aid alcohol ester dodecyl.
The anti-rust pigment is selected from zinc aluminum tripolyphosphate ZAP-C anti-trust pigment.
The pigment and filler is selected from titanium dioxide or precipitated barium sulfate.
The dispersant is selected from Coadis BR 3.
The wetting agent is selected from Clariant LCNO88.
The pH regulator is selected from DMEA.
The thickener is selected from DeuRheo WT-105A.
The anti-flash rust agent is selected from NALZIN FA 179.
The preservative is selected from MBS31.
3. According to Claim 1, the two-component epoxy waterborne container anticorrosive coating is characterized in that: The waterborne epoxy emulsion of the component B is selected from MU601A or E8117 epoxy emulsion or E6520 epoxy emulsion; The film forming aid is selected from the group consisting of film forming aid alcohol ester dodecyl.
The wetting agent is selected from Clariant LCNO88.
4. A preparation process of a two-component epoxy waterborne container anticorrosive coating, which is characterized in that: the specific steps are as follows: Preparation of component A: (1) The prescription amount of dispersant, wetting agent, pH regulator, anti-flash rust agent and preservative are added to deionized water for uniform dispersion, and under stirring, anti-rust pigments and pigments are added in sequence. It is evenly dispersed and ground to a fineness of <30um.
(2) The waterborne epoxy ester or one-component acrylic emulsion and the emulsion epoxy curing agent are uniformly dispersed, and the film forming aid is added under stirring. After being 8
Claims uniformly dispersed, the ground (1) slurry is added, and be evenly dispersed.
LU102739 (3) It is adjusted to standard viscosity with thickener, and it is coated-4 cups, 80-100 seconds.
Preparation of component B The film forming aid and wetting agent will be added to the waterborne epoxy emulsion, and it is enough to be uniformly dispersed. 9
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU102739A LU102739B1 (en) | 2021-04-06 | 2021-04-06 | A Two-component Epoxy Waterborne Container Anticorrosive Coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU102739A LU102739B1 (en) | 2021-04-06 | 2021-04-06 | A Two-component Epoxy Waterborne Container Anticorrosive Coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU102739B1 true LU102739B1 (en) | 2021-10-06 |
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ID=77989690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU102739A LU102739B1 (en) | 2021-04-06 | 2021-04-06 | A Two-component Epoxy Waterborne Container Anticorrosive Coating |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU102739B1 (en) |
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2021
- 2021-04-06 LU LU102739A patent/LU102739B1/en active IP Right Grant
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Effective date: 20211006 |