CN111321595A - Preparation method of waterproof agent resistant to severe environment finishing and waterproof agent - Google Patents
Preparation method of waterproof agent resistant to severe environment finishing and waterproof agent Download PDFInfo
- Publication number
- CN111321595A CN111321595A CN201811538837.6A CN201811538837A CN111321595A CN 111321595 A CN111321595 A CN 111321595A CN 201811538837 A CN201811538837 A CN 201811538837A CN 111321595 A CN111321595 A CN 111321595A
- Authority
- CN
- China
- Prior art keywords
- agent
- waterproof agent
- waterproof
- stirring
- acrylate
- 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- Withdrawn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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/282—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
- D06M13/292—Mono-, di- or triesters of phosphoric or phosphorous acids; Salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
Abstract
The invention discloses a preparation method of a waterproof agent resistant to severe environment finishing, which comprises the following steps: s1) adding 10-30% of special waterproofing agent B into 86.2-63.1% of common waterproofing agent A; s2) adding 3-5% of isopropanol; s3) adding 0.5-1.2% of fatty alcohol-polyoxyethylene ether while stirring; s4) adding 0.3-0.7% of stabilizer C while stirring, and uniformly stirring to obtain a novel waterproof agent; wherein A is perfluoroalkyl acrylate copolymer, B is perfluoroalkyl acrylate copolymer, and C is alkyl phosphate and fatty alcohol ethoxy compound. The invention does not change the original process flow of the client, namely, does not discharge liquid, does not increase extra water washing steps, solves the problem of sudden drop of the waterproof effect of the client under the severe conditions of numerous impurities and anionic substances, meets the requirements of the client and does not influence other physical indexes.
Description
Technical Field
The invention relates to a preparation method of a waterproof agent resistant to severe environment finishing and the waterproof agent.
Background
With the development of textile printing and dyeing industry, the influence of printing and dyeing wastewater on the environment is increasingly intensified, and many printing and dyeing enterprises are living spaces, and the water consumption is actively reduced while the technology is continuously improved.
As is known, a waterproof agent is a delicate finishing agent greatly influenced by environmental factors, and the waterproof effect and the continuity of the waterproof agent are greatly influenced by the temperature, the amount of anionic substances, the impurity content and the water hardness. The traditional terylene cloth is mostly treated by the following method: pretreatment (including desizing or oil removal) → neutralization → 130 ℃ dyeing → liquid discharge → water washing or reduction cleaning or long-vehicle open-width water washing → dehydration → upper waterproof sizing → finished product, according to the process, the residual impurities on the cloth surface before waterproof are not much, after padding for a period of time, the impurities in the padding groove are less, the influence on the waterproof effect is not great, several kilometers or several tens of kilometers of cloth are made, and the waterproof effect can also meet the requirements of customers. But at the present stage, the environment-friendly grabbing is getting tighter and tighter, and a lot of dye factories have to make full use of the fibers on dyed water under the condition that the pollution discharge index is not enough, for example, many industrial knitted fabrics which have low requirements on color fastness are mostly processed by the following processes, namely, 130 ℃ acid one-bath dyeing oil removal → no liquid discharge tank → dehydration → upper waterproof sizing → finished products. Because the cloth is not drained after dyeing and is not washed by water and is directly taken out of a cylinder (the subsequent cloth feeding is continued to be dyed and is circulated), the cloth surface residues comprise oil stains, oil removal agents, leveling agents, disperse dyes, polyester oligomers and the like, the initial effect is still realized during waterproof setting, but the cloth surface residues are seriously reduced once one or two hundred meters or even dozens of meters are realized and are directly changed into zero, the common method of a dyeing mill is that the rolling groove finishing liquid is drained and then fresh finishing liquid is fed or high-concentration waterproof agents are added to improve the waterproof effect, but the subsequent process can only maintain one hundred meters and is repeated, so that the efficiency is reduced, the cost is greatly increased, and the quality is unstable.
Disclosure of Invention
The invention aims to provide a preparation method of a waterproof agent resistant to harsh environment finishing and the waterproof agent prepared by the method, which solve the problem of sudden drop of the waterproof effect of customers under the severe conditions of numerous impurities and anionic substances, meet the requirements of the customers, and do not influence other physical indexes so as to overcome the defects of the prior art.
The technical scheme for solving the technical problem is as follows:
a preparation method of a waterproof agent resistant to harsh environment finishing is characterized by comprising the following steps:
s1) adding 10-30% of special waterproofing agent B into 86.2-63.1% of common waterproofing agent A;
s2) adding 3-5% of isopropanol;
s3) adding 0.5-1.2% of fatty alcohol-polyoxyethylene ether while stirring;
s4) adding 0.3-0.7% of stabilizer C while stirring, and uniformly stirring to obtain a novel waterproof agent;
wherein A is perfluoroalkyl acrylate copolymer, B is perfluoroalkyl acrylate copolymer, and C is alkyl phosphate and fatty alcohol ethoxy compound.
A. B is polymer emulsion formed by polymerizing one or more of octadecyl acrylate, dodecafluoroheptyl acrylate, butyl acrylate, methyl methacrylate, hexafluorobutyl acrylate, 1, 2-trihydro-vinyl perfluorodecene, isooctyl acrylate, hydroxyethyl methacrylate, octadecyl methacrylate and polymethyl (3, 3-trifluoropropyl) siloxane.
The water-proofing agent is prepared by the preparation method of the water-proofing agent with harsh environment finishing resistance.
The invention has the beneficial effects that:
the invention does not change the original process flow of the client, namely, does not discharge liquid, does not increase extra water washing steps, solves the problem of sudden drop of the waterproof effect of the client under the severe conditions of numerous impurities and anionic substances, meets the requirements of the client and does not influence other physical indexes.
The invention can reduce the times of fluid infusion, improve the quality and stability of products and reduce the cost.
Detailed Description
Embodiments of the present invention are described in detail below, as will be appreciated by one of ordinary skill in the art: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents, and all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
The basic property determination and application performance test of the obtained novel waterproof agent comprise the following steps:
a) the water repellent is comprehensively tested by hardness resistance, heat resistance, dye resistance, leveling agent resistance and shear stability, deionized water is used for preparing calcium ion hardness (the hardness is 500ppm), the concentration of the water repellent is 20g/L, the concentration of dispersed black ECT is 300% and 0.1g/L, the concentration of dispersed dark blue S-3BG is 200% and 0.1g/L, the concentration of dispersed red jade S-5BL is 100% and 0.1g/L, the concentration of the leveling agent DM-2115N is 0.2g/L, the mixture is heated to 40 ℃ in a water bath kettle, the temperature is kept for 5min, then a 1500R/min stirrer is used for stirring for 5min, filter paper is used for suction filtration, and the more filtrate shows that the stability of the water repellent is worse. The leveling agent DM-2115N is aromatic polyoxyethylene ether sulfate.
b) The application performance test comprises the steps of preparing 100ml of finishing liquid with the hardness of 500ppm (calcium ion hardness) and the concentration of a waterproof agent of 8g/L, 300% of dispersed black ECT (zinc oxide), 0.1g/L of dispersed deep blue S-3BG (zinc oxide), 0.1g/L of dispersed ruby S-5BL (zinc oxide), 100% of 0.1g/L of leveling agent DM-2115N, 0.2g/L, adjusting the pressure of a padder to be 2Kg, the vehicle speed to be 5m/min, padding 240T dry spring sub-spinning (liquid carrying rate to be 95%), padding one by one, drying 100 ℃, baking at 180 ℃ to be × 30S, testing the waterproofness of the 1 st, 3 th, 5 th, 7 th and 9 < - > to 19 th cloth by using deionized water, and testing the testing method according to the AA 221964 water dipping method.
The present invention will be further described with reference to the following examples.
Example 1:
(1) and adding 10% of special waterproofing agent B into 86.2% of common waterproofing agent DM-8110N.
(2) 3% isopropanol was added.
(3) And 0.5 percent of fatty alcohol-polyoxyethylene ether is added while stirring.
(4) And 0.3% of stabilizing agent DM-1509 is added while stirring.
The prepared new waterproof agent is named as new 1, and the new 1, the original waterproof agent DM-8110N and the special waterproof agent B are tested for performances a and B. DM-8110N is a perfluoroalkyl acrylate copolymer, the special waterproof agent B is a perfluoroalkyl acrylate copolymer, and DM-1509 is alkyl phosphate and an aliphatic alcohol ethoxy compound.
The DM-8110N and the special waterproof agent B are both composed of: octadecyl acrylate, dodecafluoroheptyl acrylate, butyl acrylate, methyl methacrylate, hexafluorobutyl acrylate, 1,1, 2-trihydro-vinyl perfluorodecene, isooctyl acrylate, hydroxyethyl methacrylate, stearyl methacrylate and polymethyl (3, 3-trifluoropropyl) siloxane, and the polymer emulsion (the relative molecular weight is 3-4 ten thousand) is prepared by polymerizing one or more of the following materials.
Example 2:
(1) and adding 20 percent of special waterproofing agent B into 76.2 percent of common waterproofing agent DM-8110N.
Steps (2), (3) and (4) were the same as in example 1. The prepared waterproof agent is named as new 2, and the performances a and b are tested.
Example 3:
(1) 30% of special water-proofing agent B is added into 66.2% of general water-proofing agent DM-8110N.
Steps (2), (3) and (4) were the same as in example 1. The prepared waterproof agent is named as new 3, and the performances a and b are tested.
Examples 1-3 the results are given in table 1 below:
TABLE 1 test results of water repellent Properties
Note: + means filtrate, number means amount of filtrate, + ++++ at maximum, + at minimum, -means no.
From the results of table 1, we identified example 2 as the target waterproofing agent. The following tests were performed.
Example 4:
and (b) testing the performance of the new waterproof agent 2, and adding 20g/L of vinyl acetate stiffening agent DM-3568 into the finishing liquid before testing. DM-3568 is a vinyl acetate compound.
Example 5:
and (b) testing the performance of the new waterproof agent 2, and before testing, adding 10g/L of nonionic antistatic agent DM-3722 into the finishing liquid. DM-3722 is a polyol carboxylate compound.
Example 6:
and (b) testing the performance b of the new waterproof agent 2, and adding 10g/L of organic silicon softening agent DM-3494 into the finishing liquid before testing. DM-3494 is amino terminated polydimethylsiloxane emulsion.
Example 7:
and (b) testing the performance b of the new waterproof agent 2, and adding 15g/L of silicon nonionic anti-pilling agent into the finishing liquid before testing.
The results for examples 4-7 are shown in table 2 below.
Table 2 results of water resistance tests with different finishes
The following list 3 examples without thereby limiting the invention to the scope of the embodiments described.
Example 1
The fabric variety is 75D × 75D 240T Chunzhan;
dyeing dye: disperse Black ECT300, disperse dark blue HGL
The dyeing method comprises the following steps: dipping method (high-temperature high-pressure jig dyeing machine)
Equipment: a Fuji setting machine (9 sections of oven) of the letter door;
vehicle speed: 95 m/min;
setting temperature: 120 deg.C, 145 deg.C, 180 deg.C, 185 deg.C, 180 deg.C, 145 deg.C
Pressure: 3 kg.
The test process comprises the following steps:
new 2 water repellent 12g/L, non-ionic antistatic agent DM-372210 g/L
After dyeing, washing with clear water once, discharging liquid, pulling cloth with clear water, directly rolling on an A-shaped frame, soaking and rolling once during shaping, sampling at the tail of a shaping machine, respectively sampling at 1000 meters, 2000 meters, 3000 meters, 4000 meters, 5000 meters and 6000 meters, testing according to an AATCC 221964 water dipping method, and the data results are shown in the following table 3, and the cost calculation is shown in the table 4.
Example 2
The fabric type is 20D × 40D 380T high-density polyester taffeta;
dyeing dye: disperse plum blossom Red FB and disperse Red GS
The dyeing method comprises the following steps: dipping method (high temperature high pressure airflow dyeing machine)
Equipment: a ZDD 218 hot air tentering and shaping machine (8 sections of oven) in Chengdong Zhejiang;
vehicle speed: 90 m/min;
setting temperature: 115 deg.C, 145 deg.C, 180 deg.C, 185 deg.C, 180 deg.C, 135 deg.C
Pressure: 3.5 kg.
The test process comprises the following steps:
new 2 water repellent 20g/L, organosilicon softener DM-349415 g/L
After dyeing is finished and water washing is finished, the dyeing is taken out of a cylinder for dehydration, one dipping and one rolling are carried out during shaping, the tail of a shaping machine is sampled at 1000 meters, 2000 meters, 3000 meters, 4000 meters, 5000 meters and 6000 meters respectively, the testing method is tested according to the AATCC 221964 water dipping method, the data results are shown in the following table 3, and the cost accounting is listed in the table 4.
Example 3
The fabric type is 300D × 300D 100T terylene oxford;
dyeing dye: disperse blue 2BLN, disperse Black ECT300
The dyeing method comprises the following steps: dipping method (high temperature high pressure overflow dyeing machine)
Equipment: a far-letter hot-air tentering setting machine (8-section oven);
vehicle speed: 45 m/min;
setting temperature: 110 deg.C, 150 deg.C, 170 deg.C, 190 deg.C, 125 deg.C
Pressure: 3 kg.
The test process comprises the following steps:
13g/L new 2 waterproof agent and DM-356820 g/L vinyl acetate stiffening agent
After dyeing is finished and water washing is finished, the dyeing is taken out of a cylinder for dehydration, one dipping and one rolling are carried out during shaping, the tail of a shaping machine is sampled at 500 meters, 1000 meters, 1500 meters, 2000 meters, 2500 meters and 3000 meters respectively, the testing method is tested according to an AATCC 221964 water dipping method, the data results are shown in the following table 3, and the cost accounting is shown in the table 4.
TABLE 3 comparison of actual production results
TABLE 4 cost accounting comparison
Claims (3)
1. A preparation method of a waterproof agent resistant to harsh environment finishing is characterized by comprising the following steps:
s1) adding 10-30% of special waterproofing agent B into 86.2-63.1% of common waterproofing agent A;
s2) adding 3-5% of isopropanol;
s3) adding 0.5-1.2% of fatty alcohol-polyoxyethylene ether while stirring;
s4) adding 0.3-0.7% of stabilizer C while stirring, and uniformly stirring to obtain a novel waterproof agent;
wherein A, B is perfluoroalkyl acrylate copolymer, and C is alkyl phosphate and fatty alcohol ethoxy compound.
2. A method for preparing a harsh environment finishing resistant waterproofing agent according to claim 1, wherein: A. b is polymer emulsion formed by polymerizing one or more of octadecyl acrylate, dodecafluoroheptyl acrylate, butyl acrylate, methyl methacrylate, hexafluorobutyl acrylate, 1, 2-trihydro-vinyl perfluorodecene, isooctyl acrylate, hydroxyethyl methacrylate, octadecyl methacrylate and polymethyl (3, 3-trifluoropropyl) siloxane.
3. A water repellent characterized by: the preparation method of the harsh environment finishing resistant waterproof agent according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538837.6A CN111321595A (en) | 2018-12-17 | 2018-12-17 | Preparation method of waterproof agent resistant to severe environment finishing and waterproof agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538837.6A CN111321595A (en) | 2018-12-17 | 2018-12-17 | Preparation method of waterproof agent resistant to severe environment finishing and waterproof agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111321595A true CN111321595A (en) | 2020-06-23 |
Family
ID=71164920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811538837.6A Withdrawn CN111321595A (en) | 2018-12-17 | 2018-12-17 | Preparation method of waterproof agent resistant to severe environment finishing and waterproof agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111321595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892424A (en) * | 2022-07-01 | 2022-08-12 | 浙江传化功能新材料有限公司 | Dyeing liquid for waterproof pad dyeing in one bath and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956331A (en) * | 2010-08-12 | 2011-01-26 | 吴江市恒润织造厂 | Method for preparing waterproof moisture-penetrating coated fabric |
| CN103046382A (en) * | 2011-10-14 | 2013-04-17 | 东丽纤维研究所（中国）有限公司 | Waterproof and oilproof soil-release fabric and production method thereof |
| CN105777977A (en) * | 2016-03-22 | 2016-07-20 | 广州恒锦化工科技有限公司 | Fluorine-containing fabric waterproof agent and preparation method thereof |
-
2018
- 2018-12-17 CN CN201811538837.6A patent/CN111321595A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956331A (en) * | 2010-08-12 | 2011-01-26 | 吴江市恒润织造厂 | Method for preparing waterproof moisture-penetrating coated fabric |
| CN103046382A (en) * | 2011-10-14 | 2013-04-17 | 东丽纤维研究所（中国）有限公司 | Waterproof and oilproof soil-release fabric and production method thereof |
| CN105777977A (en) * | 2016-03-22 | 2016-07-20 | 广州恒锦化工科技有限公司 | Fluorine-containing fabric waterproof agent and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892424A (en) * | 2022-07-01 | 2022-08-12 | 浙江传化功能新材料有限公司 | Dyeing liquid for waterproof pad dyeing in one bath and application thereof |
| CN114892424B (en) * | 2022-07-01 | 2023-12-26 | 浙江传化功能新材料有限公司 | Dyeing liquid for waterproof one-bath pad dyeing and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108049011B (en) | Preparation method of Roman cloth | |
| CN105696386B (en) | A kind of polyester fabric is scouringed and bleaching dyeing technique | |
| Radetic et al. | Environmental impact of plasma application to textiles | |
| CN107151926A (en) | A kind of textile reactive dye dye bath and colouring method | |
| CN109930403B (en) | Printing paste composition for textiles | |
| CN105970688A (en) | Acid bath dyeing method of chinlon 56 fiber fabric | |
| CN108625197B (en) | Method for improving dyeing depth of cotton cloth cochineal | |
| CN112376277A (en) | Dyeing process of polyester fabric | |
| CN107630370A (en) | Collect multi-functional dyeing with bath degreaser | |
| CN107476088B (en) | Processing method for improving water and oil resistance of cellulose fiber fabric | |
| CN104074054A (en) | Method for dyeing cellulose fiber cheeses with fluorescent coating | |
| CN111321595A (en) | Preparation method of waterproof agent resistant to severe environment finishing and waterproof agent | |
| CN113584908B (en) | Dyeing and finishing processing technology of T800 stretch fabric based on PBT/PET composite yarn | |
| CN109112854B (en) | Dyeing process of polyamide fabric | |
| CN104480723A (en) | Manufacturing method of three-proofing polyester | |
| WO2018010355A1 (en) | Dyeing method for polyester/cationic dyeable polyester/nylon/spandex fabric | |
| CN111395013B (en) | Rapid dyeing process of denim fabric | |
| CN110306358B (en) | Processing method for dyeing real silk fabric by natural dye | |
| CN111424441A (en) | Color paste for dyeing blended cotton chemical fiber and blended cotton dyeing method | |
| CN103952904A (en) | Surface modifying and finishing method of wool fabric | |
| CN110886113B (en) | Disperse dye dyeing method for treating cotton fabric by using waterborne polyurethane | |
| CN108914625B (en) | Polyformaldehyde fiber dyeing method | |
| CN112127158B (en) | Silk broadcloth printing and dyeing process | |
| CN114059363A (en) | Preparation process of polyester sanded wax-like printed cloth | |
| CN106835738A (en) | A kind of colouring method of aramid fiber and polyamide fibre blend fabric |
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: 20200623 |