CN110257810A - A kind of novel antirust agent - Google Patents
A kind of novel antirust agent Download PDFInfo
- Publication number
- CN110257810A CN110257810A CN201910634526.8A CN201910634526A CN110257810A CN 110257810 A CN110257810 A CN 110257810A CN 201910634526 A CN201910634526 A CN 201910634526A CN 110257810 A CN110257810 A CN 110257810A
- Authority
- CN
- China
- Prior art keywords
- acid
- concentration
- antirust agent
- thickener
- novel antirust
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/361—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to antirust agent technical field, especially a kind of novel antirust agent, magnesium fluoride 90-95g/L, sodium tripolyphosphate 10-30g/L, fluorine zirconic acid 10-30g/L, prodan 26-30g/L, hydrochloric acid 47-50g/L, nitric acid 10-30g/L, phosphoric acid 80-95g/L, vinyltriacetoxy silane 10-30g/L, sulfuric acid 30-40g/L, calcium nitrate 30-50g/L, thickener 200-250g/L, dehydrated alcohol 10-30g/L, surplus are deionized water.The thickener is asbestos, clay, white carbon black or silica gel.The concentration of the hydrochloric acid is 36.5%, the concentration of the sulfuric acid is 98%, the concentration of the nitric acid is 96%, the concentration of the phosphoric acid is 83%, then the novel antirust agent for passing through the base-material for weighing corresponding weight, basic acid solution preparation, addition auxiliary agent and thickening step has derusting method simple, without special equipment, the advantages of indoor and outdoor can be implemented, reduce subsequent treatment process.
Description
Technical field
The present invention relates to antirust agent technical field more particularly to a kind of novel antirust agent.
Background technique
Metal processing piece is during production and processing and transport, it is easy to get rusty, this is just needed using antirust oil in gold
Metal surface forms thin film, prevents the chemicals of corrosion of metal.So-called rust is since oxygen and water act on metal surface and generates
The mixture of oxide and hydroxide, iron rust be it is red, patina is green, and the rust of aluminum and zinc claims white rust.Machinery exists
It is difficult not contact with oxygen, moisture or the other corrosive medias in air in operation and storage, these substances will in metal surface
Electrochemical corrosion occurs and gets rusty, to prevent corrosion from the above substance must be prevented to contact with metal.And material is applied to using antirust oil
This mode for expecting surface, needs to carry out oil removing cleaning in subsequent work pieces process, so that process is various, wastes time and former
Material.
Summary of the invention
The purpose of the present invention is to solve existing in the prior art, antirust oil antirust subsequent technique is various, when waste is processed
Between and the shortcomings that raw material, and a kind of novel antirust agent proposed.
To achieve the goals above, present invention employs following technical solutions:
Design a kind of novel antirust agent, including magnesium fluoride 90-95g/L, sodium tripolyphosphate 10-30g/L, fluorine zirconic acid 10-
30g/L, prodan 26-30g/L, hydrochloric acid 47-50g/L, nitric acid 10-30g/L, phosphoric acid 80-95g/L, vinyl triacetyl oxygen
Base silane 10-30g/L, sulfuric acid 30-40g/L, calcium nitrate 30-50g/L, thickener 200-250g/L, dehydrated alcohol 10-30g/L,
Surplus is deionized water.The thickener is asbestos, clay, white carbon black or silica gel.The concentration of the hydrochloric acid is 36.5%, described
The concentration of sulfuric acid is 98%, and the concentration of the nitric acid is 96%, and the concentration of the phosphoric acid is 83%.
The preparation method of the novel antirust agent includes the following steps:
S1, the base-material for weighing corresponding weight, the base-material for weighing corresponding weight according to above-mentioned quality specific gravity are spare；
S2, the preparation of basic acid solution, added according to above-mentioned mass percent into reaction kettle hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid with
And deionized water, then carry out heating stirring, temperature control is at 50-55 DEG C, mixing speed 80-100r/min, mixing time
For 30-45min；
S3, addition auxiliary agent, successively add magnesium fluoride, sodium tripolyphosphate, fluorine zirconium according to above-mentioned mass percent into reaction kettle
Acid, vinyltriacetoxy silane, calcium nitrate, carries out insulated and stirred at prodan while adding auxiliary agent, controls temperature
At 60-70 DEG C, in 60-80r/min, mixing time finally stands and is cooled to room temperature in 30-40min speed of agitator.
S4, thickening add thickener and dehydrated alcohol into S3 in mixed liquor after cooling, while being stirred until liquid
Body stops stirring after becoming paste, finally completes the preparation of antirust agent.
A kind of novel antirust agent proposed by the present invention, beneficial effect are: the antirust agent compares existing antirust liquid agent
It is in paste, and antirust agent need to be only applied to workpiece surface when carrying out workpiece antirust treatment and then rinsed, in lotion and
Workpiece surface can play the role of workpiece surface Passivation Treatment, the passivating film of formation when contacting to protect workpiece surface, realize
The function of antirust, method is simple, is not necessarily to special equipment, and indoor and outdoor can be implemented, and reduces subsequent treatment process.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one
A kind of novel antirust agent, including magnesium fluoride 91g/L, sodium tripolyphosphate 15g/L, fluorine zirconic acid 15g/L, prodan
26g/L, hydrochloric acid 47g/L, nitric acid 15g/L, phosphoric acid 80g/L, vinyltriacetoxy silane 15g/L, sulfuric acid 32g/L, nitric acid
Calcium 35g/L, thickener 210g/L, dehydrated alcohol 15g/L, surplus are deionized water.The thickener is asbestos, clay, hard charcoal
Black or silica gel.The concentration of the hydrochloric acid is 36.5%, and the concentration of the sulfuric acid is 98%, and the concentration of the nitric acid is 96%, institute
The concentration for stating phosphoric acid is 83%.
The preparation method of the novel antirust agent includes the following steps:
S1, the base-material for weighing corresponding weight, the base-material for weighing corresponding weight according to above-mentioned quality specific gravity are spare；
S2, the preparation of basic acid solution, added according to above-mentioned mass percent into reaction kettle hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid with
And deionized water, heating stirring is then carried out, temperature is controlled at 51 DEG C, mixing speed 85r/min, mixing time 30min；
S3, addition auxiliary agent, successively add magnesium fluoride, sodium tripolyphosphate, fluorine zirconium according to above-mentioned mass percent into reaction kettle
Acid, vinyltriacetoxy silane, calcium nitrate, carries out insulated and stirred at prodan while adding auxiliary agent, controls temperature
At 62 DEG C, in 65r/min, mixing time finally stands and is cooled to room temperature in 32min speed of agitator.
S4, thickening add thickener and dehydrated alcohol into S3 in mixed liquor after cooling, while being stirred until liquid
Body stops stirring after becoming paste, finally completes the preparation of antirust agent.
Embodiment two
A kind of novel antirust agent, including magnesium fluoride 92g/L, sodium tripolyphosphate 20g/L, fluorine zirconic acid 20g/L, prodan
27g/L, hydrochloric acid 48g/L, nitric acid 20g/L, phosphoric acid 85g/L, vinyltriacetoxy silane 20g/L, sulfuric acid 34g/L, nitric acid
Calcium 40g/L, thickener 220g/L, dehydrated alcohol 20g/L, surplus are deionized water.The thickener is asbestos, clay, hard charcoal
Black or silica gel.The concentration of the hydrochloric acid is 36.5%, and the concentration of the sulfuric acid is 98%, and the concentration of the nitric acid is 96%, institute
The concentration for stating phosphoric acid is 83%.
The preparation method of the novel antirust agent includes the following steps:
S1, the base-material for weighing corresponding weight, the base-material for weighing corresponding weight according to above-mentioned quality specific gravity are spare；
S2, the preparation of basic acid solution, added according to above-mentioned mass percent into reaction kettle hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid with
And deionized water, heating stirring is then carried out, temperature is controlled at 52 DEG C, mixing speed 90r/min, mixing time 35min；
S3, addition auxiliary agent, successively add magnesium fluoride, sodium tripolyphosphate, fluorine zirconium according to above-mentioned mass percent into reaction kettle
Acid, vinyltriacetoxy silane, calcium nitrate, carries out insulated and stirred at prodan while adding auxiliary agent, controls temperature
At 64 DEG C, in 70r/min, mixing time finally stands and is cooled to room temperature in 34min speed of agitator.
S4, thickening add thickener and dehydrated alcohol into S3 in mixed liquor after cooling, while being stirred until liquid
Body stops stirring after becoming paste, finally completes the preparation of antirust agent.
Embodiment three
A kind of novel antirust agent, including magnesium fluoride 93g/L, sodium tripolyphosphate 25g/L, fluorine zirconic acid 25g/L, prodan
28g/L, hydrochloric acid 49g/L, nitric acid 25g/L, phosphatase 79 0g/L, vinyltriacetoxy silane 25g/L, sulfuric acid 36g/L, nitric acid
Ca45 g/L, thickener 230g/L, dehydrated alcohol 25g/L, surplus are deionized water.The thickener is asbestos, clay, hard charcoal
Black or silica gel.The concentration of the hydrochloric acid is 36.5%, and the concentration of the sulfuric acid is 98%, and the concentration of the nitric acid is 96%, institute
The concentration for stating phosphoric acid is 83%.
The preparation method of the novel antirust agent includes the following steps:
S1, the base-material for weighing corresponding weight, the base-material for weighing corresponding weight according to above-mentioned quality specific gravity are spare；
S2, the preparation of basic acid solution, added according to above-mentioned mass percent into reaction kettle hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid with
And deionized water, heating stirring is then carried out, temperature control is in 53 DEG C, mixing speed 100r/min, mixing time
40min；
S3, addition auxiliary agent, successively add magnesium fluoride, sodium tripolyphosphate, fluorine zirconium according to above-mentioned mass percent into reaction kettle
Acid, vinyltriacetoxy silane, calcium nitrate, carries out insulated and stirred at prodan while adding auxiliary agent, controls temperature
At 66 DEG C, in 75r/min, mixing time finally stands and is cooled to room temperature in 36min speed of agitator.
S4, thickening add thickener and dehydrated alcohol into S3 in mixed liquor after cooling, while being stirred until liquid
Body stops stirring after becoming paste, finally completes the preparation of antirust agent.
Example IV
A kind of novel antirust agent, including magnesium fluoride 95g/L, sodium tripolyphosphate 30g/L, fluorine zirconic acid 30g/L, prodan
30g/L, hydrochloric acid 50g/L, nitric acid 30g/L, phosphatase 79 5g/L, vinyltriacetoxy silane 30g/L, sulfuric acid 40g/L, nitric acid
Calcium 50g/L, thickener 250g/L, dehydrated alcohol 30g/L, surplus are deionized water.The thickener is asbestos, clay, hard charcoal
Black or silica gel.The concentration of the hydrochloric acid is 36.5%, and the concentration of the sulfuric acid is 98%, and the concentration of the nitric acid is 96%, institute
The concentration for stating phosphoric acid is 83%.
The preparation method of the novel antirust agent includes the following steps:
S1, the base-material for weighing corresponding weight, the base-material for weighing corresponding weight according to above-mentioned quality specific gravity are spare；
S2, the preparation of basic acid solution, added according to above-mentioned mass percent into reaction kettle hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid with
And deionized water, heating stirring is then carried out, temperature control is in 55 DEG C, mixing speed 100r/min, mixing time
45min；
S3, addition auxiliary agent, successively add magnesium fluoride, sodium tripolyphosphate, fluorine zirconium according to above-mentioned mass percent into reaction kettle
Acid, vinyltriacetoxy silane, calcium nitrate, carries out insulated and stirred at prodan while adding auxiliary agent, controls temperature
At 70 DEG C, in 80r/min, mixing time finally stands and is cooled to room temperature in 40min speed of agitator.
S4, thickening add thickener and dehydrated alcohol into S3 in mixed liquor after cooling, while being stirred until liquid
Body stops stirring after becoming paste, finally completes the preparation of antirust agent.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of novel antirust agent, which is characterized in that including magnesium fluoride 90-95g/L, sodium tripolyphosphate 10-30g/L, fluorine zirconic acid
10-30g/L, prodan 26-30g/L, hydrochloric acid 47-50g/L, nitric acid 10-30g/L, phosphoric acid 80-95g/L, vinyl triacetyl
Oxysilane 10-30g/L, sulfuric acid 30-40g/L, calcium nitrate 30-50g/L, thickener 200-250g/L, dehydrated alcohol 10-30g/
L, surplus are deionized water.
2. a kind of novel antirust agent according to claim 1, which is characterized in that the thickener is asbestos, clay, hard charcoal
Black or silica gel.
3. a kind of novel antirust agent according to claim 1, which is characterized in that the concentration of the hydrochloric acid is 36.5%, institute
The concentration for stating sulfuric acid is 98%, and the concentration of the nitric acid is 96%, and the concentration of the phosphoric acid is 83%.
4. a kind of novel antirust agent according to claim 1, which is characterized in that the preparation method packet of the novel antirust agent
Include following steps:
S1, the base-material for weighing corresponding weight, the base-material for weighing corresponding weight according to above-mentioned quality specific gravity are spare；
S2, basic acid solution preparation, hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid are added according to above-mentioned mass percent and is gone into reaction kettle
Ionized water, then carries out heating stirring, and temperature is controlled at 50-55 DEG C, mixing speed 80-100r/min, mixing time 30-
45min；
S3, addition auxiliary agent, successively add magnesium fluoride, sodium tripolyphosphate, fluorine zirconic acid, fluorine into reaction kettle according to above-mentioned mass percent
Sodium metasilicate, calcium nitrate, carries out insulated and stirred at vinyltriacetoxy silane while adding auxiliary agent, controls temperature in 60-
70 DEG C, in 60-80r/min, mixing time finally stands and is cooled to room temperature in 30-40min speed of agitator.
S4, thickening add thickener and dehydrated alcohol into S3 in mixed liquor after cooling, while being stirred until liquid becomes
To stop stirring after paste, the preparation of antirust agent is finally completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910634526.8A CN110257810A (en) | 2019-07-15 | 2019-07-15 | A kind of novel antirust agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910634526.8A CN110257810A (en) | 2019-07-15 | 2019-07-15 | A kind of novel antirust agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110257810A true CN110257810A (en) | 2019-09-20 |
Family
ID=67926010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910634526.8A Withdrawn CN110257810A (en) | 2019-07-15 | 2019-07-15 | A kind of novel antirust agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110257810A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112159976A (en) * | 2020-09-29 | 2021-01-01 | 合肥河钢新材料科技有限公司 | Preparation method of colored steel plate |
| CN112267107A (en) * | 2020-10-26 | 2021-01-26 | 胜赛思精密压铸（扬州）有限公司 | Corrosion-resistant chromium-free surface treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154861A (en) * | 2015-07-06 | 2015-12-16 | 安徽景昌铝业有限公司 | Chromate-free passivation treatment process for aluminum profile material |
| CN109183053A (en) * | 2018-09-18 | 2019-01-11 | 山东龙口三元铝材有限公司 | A kind of flexibility treatment fluid and its method for handling pull ring material |
-
2019
- 2019-07-15 CN CN201910634526.8A patent/CN110257810A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154861A (en) * | 2015-07-06 | 2015-12-16 | 安徽景昌铝业有限公司 | Chromate-free passivation treatment process for aluminum profile material |
| CN109183053A (en) * | 2018-09-18 | 2019-01-11 | 山东龙口三元铝材有限公司 | A kind of flexibility treatment fluid and its method for handling pull ring material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112159976A (en) * | 2020-09-29 | 2021-01-01 | 合肥河钢新材料科技有限公司 | Preparation method of colored steel plate |
| CN112159976B (en) * | 2020-09-29 | 2023-01-24 | 合肥河钢新材料科技有限公司 | Preparation method of colored steel plate |
| CN112267107A (en) * | 2020-10-26 | 2021-01-26 | 胜赛思精密压铸（扬州）有限公司 | Corrosion-resistant chromium-free surface treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110257810A (en) | A kind of novel antirust agent | |
| CN103215578B (en) | Metal passivant prepared from diosorea cirrhosa residue extracting liquid | |
| CN102977774B (en) | A kind of modified silanized surface pretreatment agent containing octadecane alcohol radical Soxylat A 25-7 and preparation method thereof | |
| CN109930191A (en) | Antibacterial stainless steel and preparation method thereof | |
| CN106917095A (en) | A kind of acid-washing stainless steel passivation cream and preparation method thereof | |
| CN102719856A (en) | Method for removing alkali metal via electrolytic aluminum liquid | |
| CN105200482A (en) | Nickel-free hole sealing agent for improving abrasion resistance of aluminum alloy anode oxide film and preparation method of nickel-free hole sealing agent | |
| CN101376514A (en) | Preparation of magnesium fluoride | |
| CN102887528B (en) | Production technology of ammonium bifluoride | |
| CN105951150A (en) | Surface treatment process for aluminum plate | |
| CN110230083A (en) | A kind of aluminium and aluminium alloy anode oxide hole sealing agent and its application | |
| CN112760629A (en) | Environment-friendly chromium-free passivation solution suitable for metal surface treatment | |
| CN101210321B (en) | Chemical passivation technique for magnesium alloy surface | |
| CN102993870B (en) | Modified silanized metal surface pre-treating agent containing polyoxyethylene oleate and preparation method thereof | |
| CN101396776A (en) | Acid-cleaning avoid welding flux and preparation method thereof | |
| CN102557079A (en) | Preparation method of sodium fluoride | |
| CN107254676A (en) | A kind of chrome-free tanning agent and preparation method thereof | |
| CN105568274A (en) | Environment-friendly galvanizing passivator and preparation method thereof | |
| CN105862102A (en) | Passivation process for aluminum foil for air conditioner | |
| CN105925965A (en) | Aluminum strip passivation process | |
| CN103103514A (en) | Spraying type iron phosphating comprehensive treatment agent prior to coating of spheroidal graphite casting and preparation method of treatment agent | |
| CN104561860B (en) | A kind of Technology for Heating Processing of high strength alumin ium alloy | |
| CN108866528A (en) | A kind of Aluminum passivator and the passivating method using the Aluminum passivator | |
| CN104250777A (en) | Normal temperature multifunctional phosphating solution for highway guardrails | |
| CN102534598A (en) | Preparation method and film-forming liquid for aluminum alloy high-performance trivalent chromium hybrid conversion film |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190920 |