CN112832022A - Preparation method of ultraviolet-proof shirt, T-shirt and fabric based on carboxylic anhydride - Google Patents
Preparation method of ultraviolet-proof shirt, T-shirt and fabric based on carboxylic anhydride Download PDFInfo
- Publication number
- CN112832022A CN112832022A CN202110032482.9A CN202110032482A CN112832022A CN 112832022 A CN112832022 A CN 112832022A CN 202110032482 A CN202110032482 A CN 202110032482A CN 112832022 A CN112832022 A CN 112832022A
- Authority
- CN
- China
- Prior art keywords
- shirt
- fabric
- mass
- carboxylic anhydride
- ultraviolet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- D06M13/10—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 oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/192—Polycarboxylic acids; Anhydrides, halides or 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic System; Zincates; Cadmates
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic System; Titanates; Zirconates; Stannates; Plumbates
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
- D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
-
- 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
- D06M13/10—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 oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/203—Unsaturated carboxylic acids; Anhydrides, halides or 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
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments
Abstract
The invention provides a preparation method of ultraviolet-proof shirts, T-shirts and fabrics based on carboxylic anhydride, which comprises the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 2-5 mass% of carboxylic anhydride relative to the mass of the shirt, the T-shirt or the fabric, 10-15 mass% of ammonium sulfate relative to the mass of the carboxylic anhydride, and 0.5-2 mass% of micro-nano metal oxide relative to the mass of the shirt, the T-shirt or the fabric; putting the shirt or the T-shirt or the fabric into the finishing liquid for dipping, heating to 60-85 ℃, and keeping the temperature for 30-45 min; spin-drying the soaked shirt or T-shirt or fabric; and drying the dried shirt or T-shirt or fabric.
Description
Technical Field
The invention belongs to the technical field of textile processing, and relates to a preparation method of ultraviolet-proof shirts, T-shirts and fabrics based on carboxylic anhydride, which is mainly used for preparing the ultraviolet-proof shirts, T-shirts and fabrics.
Background
Ultraviolet rays are divided into 3 parts according to wavelength: UVA (wavelength 315-400 nm), UVB (wavelength 280-315 nm) and UVC (wavelength 185-280 nm). Wherein the UVC energy is high, but is almost completely absorbed by the ozone layer and cannot reach the ground; the shorter UVB wavelengths, higher energy, can penetrate the skin several millimeters, causing the skin to produce melanin, which presents a tan and sunburn that, if repeated, increases the risk of melanoma. UVA is longer in wavelength and lower in energy, reaching almost entirely the ground, and it penetrates the dermis, causing premature aging, loss of elasticity and the appearance of wrinkles. UVA and UVB are therefore the main targets of uv protection. Since the last 20 th century, the ozone layer in the earth's atmosphere is seriously damaged due to the use of a large amount of fluorocarbon solvents and freon, so that ultraviolet rays reaching the earth's surface are continuously increased, and serious harm is brought to the environment. Therefore, it is an important research subject to prevent the excessive ultraviolet rays from damaging the human body. In the 9O's of the last century, ultraviolet-proof fabrics have been rapidly emerging, and among them, with the most prominence of japan companies, they have successively introduced products such as sportswear, shirts, stockings, hats, and sun umbrellas having an ultraviolet radiation-proof function, which are ignored by consumers. One method for preparing the ultraviolet-proof shirt or the T-shirt is to apply a material capable of reflecting ultraviolet rays or selectively absorbing ultraviolet rays on the shirt or the T-shirt, so that the shirt or the T-shirt applied with the material has no adverse effect on various serviceability of the fabric, meets the use requirement, can increase the reflection and scattering effect of the fabric on the ultraviolet rays, prevents the fabric from penetrating, and has the performances of sunstroke prevention, heat insulation and cool touch. In optical principle, light is incident on an object, a part of the light is reflected on the surface, a part of the light is absorbed by the object, and the rest of the light is transmitted through the object. The fabric finished by the ultraviolet radiation protection is irradiated with light, and the ultraviolet screening agent on the fabric reflects ultraviolet rays or selectively absorbs the ultraviolet rays and converts the energy of the ultraviolet rays into low energy to be released so as to screen the ultraviolet rays, and the other small part of the ultraviolet rays pass through gaps of the fabric and penetrate through the fabric.
The carboxylic acid anhydride is an inorganic acid anhydride which can be written as R-CO-O-CO-R (CO is a carbonyl group) obtained by removing one molecule of water from two molecules of carboxylic acid (or two carboxyl groups in the same molecule), is mostly a nonmetallic oxide, and is obtained by dehydrating an oxygen-containing acid. Such as H2SO4The acid anhydride of (A) is SO3，H2SO3The acid anhydride of (A) is SO2，HNO3The acid anhydride of (A) is N2O5，H2CO3The acid anhydride of (A) is CO2. But the nonmetallic oxide need not be an anhydride, e.g. NO2And NO. It is also controversial whether CO is the anhydride of HCOOH, which can be obtained by dehydration of HCOOH, but the conditions under which CO is converted to HCOOH are rather severe. In any case, the carboxylic anhydride has better application prospect in the preparation of the ultraviolet-proof finishing liquid and the development of ultraviolet-proof textiles. The invention discloses a preparation method of ultraviolet-proof shirts, T-shirts and fabrics based on carboxylic anhydride, which is used for preparing ultraviolet-proof shirts, T-shirts and fabrics.
Disclosure of Invention
The invention aims to provide a preparation method of ultraviolet-proof shirts, T-shirts and fabrics based on carboxylic anhydride aiming at the problems in the prior art.
The purpose of the invention can be realized by the following technical scheme: the preparation method of the carboxylic anhydride-based ultraviolet-proof shirt, T-shirt and fabric is characterized by comprising the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 2-5 mass% of carboxylic anhydride relative to the mass of the shirt, the T-shirt or the fabric, 10-15 mass% of ammonium sulfate relative to the mass of the carboxylic anhydride, and 0.5-2 mass% of micro-nano metal oxide relative to the mass of the shirt, the T-shirt or the fabric; putting the shirt or the T-shirt or the fabric into the finishing liquid for dipping, heating to 60-85 ℃, and keeping the temperature for 30-45 min; spin-drying the soaked shirt or T-shirt or fabric; and drying the dried shirt or T-shirt or fabric.
The carboxylic anhydride is one of maleic anhydride, acetic propionic anhydride and levulinic anhydride.
The micro-nano metal oxide is one of micro-nano zinc oxide, micro-nano titanium oxide and micro-nano zirconium oxide.
Compared with the prior art, this has following advantage: the preparation is simple and reliable.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
The preparation method of the carboxylic anhydride-based ultraviolet-proof shirt, T-shirt and fabric comprises the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 2-5 mass% of carboxylic anhydride relative to the mass of the shirt, the T-shirt or the fabric, 10-15 mass% of ammonium sulfate relative to the mass of the carboxylic anhydride, and 0.5-2 mass% of micro-nano metal oxide relative to the mass of the shirt, the T-shirt or the fabric; putting the shirt or the T-shirt or the fabric into the finishing liquid for dipping, heating to 60-85 ℃, and keeping the temperature for 30-45 min; spin-drying the soaked shirt or T-shirt or fabric; and drying the dried shirt or T-shirt or fabric.
The carboxylic anhydride is one of maleic anhydride, acetic propionic anhydride and levulinic anhydride.
The micro-nano metal oxide is one of micro-nano zinc oxide, micro-nano titanium oxide and micro-nano zirconium oxide.
The first embodiment is as follows: the preparation method of the ultraviolet-proof T-shirt comprises the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 3.5 mass% maleic anhydride relative to the mass of the T-shirt, 10 mass% ammonium sulfate relative to the mass of the maleic anhydride, 1.5 mass% micro-nano metal oxide relative to the mass of the T-shirt; soaking the T-shirt in finishing liquid, heating to 60 ℃, and keeping the temperature for 30 min; spin-drying the soaked T-shirt; and drying the dried T-shirt. UPF, UVA and UVB transmittances were measured, and are shown in Table 1.
TABLE 1
| Sample (I) | UPF value | UVA transmittance (%) | UVB transmittance (%) |
| Unscheduled T shirt | 4.21 | 30.76 | 23.45 |
| Finishing T shirt | 32.65 | 5.34 | 3.56 |
Example two: the preparation method of the ultraviolet-proof shirt comprises the following steps: preparing a finishing liquid, wherein the finishing liquid contains: acetic propionic anhydride of 3 mass% relative to the mass of the shirt, ammonium sulfate of 10 mass% relative to the mass of acetic propionic anhydride, micro-nano metal oxide of 1.5 mass% relative to the mass of the shirt; soaking the shirt in the finishing liquid, heating to 60 ℃, and keeping the temperature for 30 min; spin-drying the soaked shirt; and drying the dried shirt. UPF, UVA and UVB transmittances were measured, and are shown in Table 2.
TABLE 2
| Sample (I) | UPF value | UVA transmittance (%) | UVB transmittance (%) |
| Unfinished shirt | 4.11 | 29.01 | 21.78 |
| Finishing shirt | 35.12 | 5.87 | 7.80 |
Example three: the preparation method of the ultraviolet-proof fabric comprises the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 3.5 mass% of levulinic anhydride relative to the mass of the fabric, 10 mass% of amine sulfate relative to the mass of the levulinic anhydride, and 1.5 mass% of micro-nano metal oxide relative to the mass of the fabric; soaking the fabric in finishing liquor, heating to 70 ℃, and keeping the temperature for 40 min; spin-drying the soaked fabric; and drying the spun fabric. UPF, UVA and UVB transmittances were measured, and are shown in Table 3.
TABLE 3
| Sample (I) | UPF value | UVA transmittance (%) | UVB transmittance (%) |
| Unfinished fabric | 4.71 | 25.12 | 23.87 |
| Finishing fabric | 48.38 | 4.39 | 5.72 |
Example four: the preparation method of the ultraviolet-proof fabric comprises the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 3 mass% of maleic anhydride relative to the mass of the fabric, 10 mass% of amine sulfate relative to the mass of the maleic anhydride, and 1.5 mass% of micro-nano metal oxide relative to the mass of the fabric; soaking the fabric in finishing liquor, heating to 60 ℃, and keeping the temperature for 30 min; spin-drying the soaked fabric; and drying the spun fabric. UPF, UVA and UVB transmittances were measured, and are shown in Table 4.
TABLE 4
| Sample (I) | UPF value | UVA transmittance (%) | UVB transmittance (%) |
| Unfinished fabric | 4.09 | 29.23 | 21.40 |
| Finishing fabric | 29.15 | 6.21 | 8.63 |
In the above examples, the apparatus used was a RY-25012 type room temperature sample dyeing machine (shanghai longling electronics technologies ltd.), a U3310 dual beam UV spectrophotometer (hitachi), JRJ-300-I shear emulsion mixer (shanghai daigaku model factory), a UV1000F type fabric UV tester (Labshere, usa); the ultraviolet transmittance and the UPF value of the fabric are respectively measured according to GB/T18830-.
Through the above embodiment, it can be known that shirts, T-shirts and fabrics with good ultraviolet resistance can be obtained by the preparation method.
The ultraviolet-proof fabric obtained in the invention can be used for manufacturing shirts, T-shirts or other products.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (3)
1. The preparation method of the carboxylic anhydride-based ultraviolet-proof shirt, T-shirt and fabric is characterized by comprising the following steps: preparing a finishing liquid, wherein the finishing liquid contains: 2-5 mass% of carboxylic anhydride relative to the mass of the shirt, the T-shirt or the fabric, 10-15 mass% of ammonium sulfate relative to the mass of the carboxylic anhydride, and 0.5-2 mass% of micro-nano metal oxide relative to the mass of the shirt, the T-shirt or the fabric; putting the shirt or the T-shirt or the fabric into the finishing liquid for dipping, heating to 60-85 ℃, and keeping the temperature for 30-45 min; spin-drying the soaked shirt or T-shirt or fabric; and drying the dried shirt or T-shirt or fabric.
2. The method for preparing ultraviolet-proof shirts, T-shirts and fabrics based on carboxylic anhydride according to claim 1 wherein the carboxylic anhydride is one of maleic anhydride, acetic-propionic anhydride and levulinic anhydride.
3. The method for preparing carboxylic anhydride-based ultraviolet-proof shirts, T-shirts and fabrics according to claim 1, wherein the micro-nano metal oxide is one of micro-nano zinc oxide, micro-nano titanium oxide and micro-nano zirconium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110032482.9A CN112832022A (en) | 2021-01-11 | 2021-01-11 | Preparation method of ultraviolet-proof shirt, T-shirt and fabric based on carboxylic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110032482.9A CN112832022A (en) | 2021-01-11 | 2021-01-11 | Preparation method of ultraviolet-proof shirt, T-shirt and fabric based on carboxylic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112832022A true CN112832022A (en) | 2021-05-25 |
Family
ID=75929535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110032482.9A Pending CN112832022A (en) | 2021-01-11 | 2021-01-11 | Preparation method of ultraviolet-proof shirt, T-shirt and fabric based on carboxylic anhydride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112832022A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824748A (en) * | 2010-04-06 | 2010-09-08 | 广东名鼠股份有限公司 | Finishing method using anti-ultraviolet finishing agent |
| CN101824749A (en) * | 2010-04-06 | 2010-09-08 | 东华大学 | Finishing method using cotton and cotton-containing fabric non-ironing finishing agent |
| CN102828396A (en) * | 2012-09-19 | 2012-12-19 | 昆山市周市惠宏服装厂 | Production method of uvioresistant full-cotton shirts |
-
2021
- 2021-01-11 CN CN202110032482.9A patent/CN112832022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824748A (en) * | 2010-04-06 | 2010-09-08 | 广东名鼠股份有限公司 | Finishing method using anti-ultraviolet finishing agent |
| CN101824749A (en) * | 2010-04-06 | 2010-09-08 | 东华大学 | Finishing method using cotton and cotton-containing fabric non-ironing finishing agent |
| CN102828396A (en) * | 2012-09-19 | 2012-12-19 | 昆山市周市惠宏服装厂 | Production method of uvioresistant full-cotton shirts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106149425B (en) | A kind of dyeing and finishing processing method of cotton-polyester blend fabric | |
| Hou et al. | Multifunctional finishing of cotton with 3, 3′, 4, 4′-benzophenone tetracarboxylic acid: Functional performance | |
| CN110344262B (en) | One-bath one-step processing method for dyeing and waterproof finishing of polyester fabric | |
| CN104631110B (en) | A kind of UV resistance textile | |
| CN109868664A (en) | The preparation method of micro suede face fabric | |
| CN103541182A (en) | Production method of spandex core-spun elastic fabric | |
| CN107217516A (en) | A kind of bamboo fibre fabric high-efficiency environment friendly dyeing and finishing technology | |
| Wang et al. | Research on dyeing and ultraviolet protection of silk fabric using vegetable dyes extracted from Flos Sophorae | |
| CN108716116A (en) | A kind of antibacterial deodourizing anti-crease finishing technique of blended yarn weaved fabric | |
| CN105887514A (en) | Bamboo fiber fabric dyeing and finishing process | |
| CN112832022A (en) | Preparation method of ultraviolet-proof shirt, T-shirt and fabric based on carboxylic anhydride | |
| CN105401443B (en) | Cold-resistant uvioresistant fabrics and its manufacture craft | |
| Choudhury | Advances in the finishing of silk fabrics | |
| CN106087410A (en) | A kind of processing method of fire resistance fibre fabric | |
| CN105862412A (en) | Process for producing ultraviolet-resistant socks | |
| He et al. | A natural dye extract from lotus seedpod for dyeability and functional property of tussah silk fabric | |
| CN108532060A (en) | A kind of spinning process of the good mixed yarn of dyeability | |
| CN101824748B (en) | Finishing method using anti-ultraviolet finishing agent | |
| CN113279264B (en) | Ultraviolet-proof stain-resistant fabric and manufacturing method thereof | |
| CN114481613A (en) | Formaldehyde-free non-ironing three-proofing one-bath finishing method for stock solution coloring fabric | |
| CN108330678B (en) | Maintenance method of silk | |
| Adnan et al. | Investigations on the effects of UV finishes using titanium dioxide on silk and lyocell union fabrics | |
| CN109295769B (en) | Preparation method of silk with ultraviolet radiation prevention function | |
| CN107119405A (en) | A kind of preparation method for being used to improve ultraviolet resistance 20D woven fabrics | |
| Yang et al. | Ester Crosslinking of Cotton Cellulose by Polycarboxylic Acids: pH-Dependency. |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210525 |
|
| RJ01 | Rejection of invention patent application after publication |