CN112831107A - High-oil-resistance anti-slip rubber material - Google Patents
High-oil-resistance anti-slip rubber material Download PDFInfo
- Publication number
- CN112831107A CN112831107A CN202011641639.XA CN202011641639A CN112831107A CN 112831107 A CN112831107 A CN 112831107A CN 202011641639 A CN202011641639 A CN 202011641639A CN 112831107 A CN112831107 A CN 112831107A
- Authority
- CN
- China
- Prior art keywords
- parts
- rubber
- rubber material
- resistance
- antioxidant
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-oil-resistance anti-slip rubber material which comprises the following raw materials in parts by weight: 40-50 parts of chloroprene rubber, 20-30 parts of nitrile rubber, 15-25 parts of polyvinyl chloride, 10-20 parts of thermoplastic polyurethane, 10-20 parts of graphene, 5-15 parts of flame retardant, 5-15 parts of vulcanizing agent, 1-3 parts of antioxidant, 1-3 parts of stabilizer and 1-3 parts of silicone oil, and the chloroprene rubber-containing rubber composition comprises the following raw materials in parts by weight: 40 parts of chloroprene rubber, 20 parts of nitrile rubber, 15 parts of polyvinyl chloride, 10 parts of thermoplastic polyurethane, 10 parts of graphene, 5 parts of flame retardant, 5 parts of vulcanizing agent, 1 part of antioxidant, 1 part of stabilizer and 1 part of silicone oil. The stable oil-resistant rubber material disclosed by the invention has the advantages of good acid-base resistance, good oil resistance, difficulty in deformation, good anti-skid property, good oil corrosion resistance, difficulty in aging, long service life and good social and economic benefits.
Description
Technical Field
The invention relates to the technical field of rubber, in particular to a rubber material with high oil resistance and slip resistance.
Background
The rubber is a high-elasticity polymer compound which is prepared by processing extracted latex of plants such as rubber trees and the like, has insulativity and can isolate air and water, and comprises organic silicon rubber and synthetic rubber. The rubber material has high elasticity and good wear resistance due to the stable chemical structure, so that a large number of aromatic chemical products generally exist in the prior rubber product, the rubber material has wide application in the fields of traffic, construction, machinery, electronics, chemical industry and the like, and is rapidly expanded to be used for the production of toys with continuous and deep modification research, and is also used for medical products such as catheters, venous catheters and sanitary gloves. The sealing gasket is a material which is used in machinery, equipment, pipelines and the like and has a sealing effect, the most common sealing gasket is made of rubber materials and widely applied to industries such as automobiles, electronics, chemical engineering, antistatic property, flame retardance, food and the like, the rubber gasket is often contacted with an oil cylinder, and the sealing gasket can be corroded by media such as gasoline, diesel oil, engine oil and the like, so the sealing gasket has good oil resistance and corrosion resistance, but the existing rubber sealing gasket on the market cannot meet the requirements of people, has short service life and is easy to leak, and the use of people is inconvenient.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a rubber material with high oil resistance and skid resistance.
A rubber material with high oil resistance and skid resistance comprises the following raw materials in parts by weight: 40-50 parts of chloroprene rubber, 20-30 parts of nitrile rubber, 15-25 parts of polyvinyl chloride, 10-20 parts of thermoplastic polyurethane, 10-20 parts of graphene, 5-15 parts of flame retardant, 5-15 parts of vulcanizing agent, 1-3 parts of antioxidant, 1-3 parts of stabilizer and 1-3 parts of silicone oil.
Further, the feed comprises the following raw materials in parts by weight: 40 parts of chloroprene rubber, 20 parts of nitrile rubber, 15 parts of polyvinyl chloride, 10 parts of thermoplastic polyurethane, 10 parts of graphene, 5 parts of flame retardant, 5 parts of vulcanizing agent, 1 part of antioxidant, 1 part of stabilizer and 1 part of silicone oil.
Further, the feed comprises the following raw materials in parts by weight: 45 parts of chloroprene rubber, 25 parts of nitrile rubber, 20 parts of polyvinyl chloride, 15 parts of thermoplastic polyurethane, 15 parts of graphene, 10 parts of flame retardant, 10 parts of vulcanizing agent, 2 parts of antioxidant, 2 parts of stabilizer and 2 parts of silicone oil.
Further, the feed comprises the following raw materials in parts by weight: 50 parts of chloroprene rubber, 30 parts of nitrile rubber, 25 parts of polyvinyl chloride, 20 parts of thermoplastic polyurethane, 20 parts of graphene, 15 parts of flame retardant, 15 parts of vulcanizing agent, 3 parts of antioxidant, 3 parts of stabilizer and 3 parts of silicone oil.
Further, the flame retardant is one or a mixture of more of antimony trioxide, magnesium hydroxide and aluminum hydroxide.
Further, the vulcanizing agent is sulfur.
Further, the antioxidant is phosphite ester, and the stabilizer is one or more of antioxidant RD, antioxidant 124 and antioxidant MB.
A preparation method of a rubber material with high oil resistance and skid resistance comprises the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
The stable oil-resistant rubber material disclosed by the invention has good acid-base resistance and oil resistance, is not easy to deform, and has good anti-skid performance.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a high-oil-resistance anti-slip rubber material which comprises the following raw materials in parts by weight: 40 parts of chloroprene rubber, 20 parts of nitrile rubber, 15 parts of polyvinyl chloride, 10 parts of thermoplastic polyurethane, 10 parts of graphene, 5 parts of flame retardant, 5 parts of vulcanizing agent, 1 part of antioxidant, 1 part of stabilizer and 1 part of silicone oil.
A preparation method of a rubber material with high oil resistance and skid resistance comprises the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
Example two
The invention provides a high-oil-resistance anti-slip rubber material which comprises the following raw materials in parts by weight: 42.5 parts of chloroprene rubber, 22.5 parts of nitrile rubber, 17.5 parts of polyvinyl chloride, 12.5 parts of thermoplastic polyurethane, 12.5 parts of graphene, 7.5 parts of flame retardant, 7.5 parts of vulcanizing agent, 1.5 parts of antioxidant, 1.5 parts of stabilizer and 1.5 parts of silicone oil.
A preparation method of a rubber material with high oil resistance and skid resistance comprises the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
EXAMPLE III
The invention provides a high-oil-resistance anti-slip rubber material which comprises the following raw materials in parts by weight: 45 parts of chloroprene rubber, 25 parts of nitrile rubber, 20 parts of polyvinyl chloride, 15 parts of thermoplastic polyurethane, 15 parts of graphene, 10 parts of flame retardant, 10 parts of vulcanizing agent, 2 parts of antioxidant, 2 parts of stabilizer and 2 parts of silicone oil.
A preparation method of a rubber material with high oil resistance and skid resistance comprises the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
Example four
The invention provides a high-oil-resistance anti-slip rubber material which comprises the following raw materials in parts by weight: 47.5 parts of chloroprene rubber, 27.5 parts of nitrile rubber, 22.5 parts of polyvinyl chloride, 17.5 parts of thermoplastic polyurethane, 17.5 parts of graphene, 12.5 parts of flame retardant, 12.5 parts of vulcanizing agent, 2.5 parts of antioxidant, 2.5 parts of stabilizer and 2.5 parts of silicone oil.
A preparation method of a rubber material with high oil resistance and skid resistance comprises the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
EXAMPLE five
The invention provides a high-oil-resistance anti-slip rubber material which comprises the following raw materials in parts by weight: 50 parts of chloroprene rubber, 30 parts of nitrile rubber, 25 parts of polyvinyl chloride, 20 parts of thermoplastic polyurethane, 20 parts of graphene, 15 parts of flame retardant, 15 parts of vulcanizing agent, 3 parts of antioxidant, 3 parts of stabilizer and 3 parts of silicone oil.
A preparation method of a rubber material with high oil resistance and skid resistance comprises the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
The rubber finished products prepared by the above embodiments and the finished products in the current market are subjected to performance tests and oil resistance tests: .
According to the embodiments, the rubber product prepared by the invention has the advantages of excellent mechanical property, good elasticity and anti-skid property, strong resilience and good oil corrosion resistance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The rubber material with high oil resistance and skid resistance is characterized by comprising the following raw materials in parts by weight: 40-50 parts of chloroprene rubber, 20-30 parts of nitrile rubber, 15-25 parts of polyvinyl chloride, 10-20 parts of thermoplastic polyurethane, 10-20 parts of graphene, 5-15 parts of flame retardant, 5-15 parts of vulcanizing agent, 1-3 parts of antioxidant, 1-3 parts of stabilizer and 1-3 parts of silicone oil.
2. The rubber material with high oil resistance and skid resistance as claimed in claim 1, is characterized by comprising the following raw materials in parts by weight: 40 parts of chloroprene rubber, 20 parts of nitrile rubber, 15 parts of polyvinyl chloride, 10 parts of thermoplastic polyurethane, 10 parts of graphene, 5 parts of flame retardant, 5 parts of vulcanizing agent, 1 part of antioxidant, 1 part of stabilizer and 1 part of silicone oil.
3. The rubber material with high oil resistance and skid resistance as claimed in claim 1, is characterized by comprising the following raw materials in parts by weight: 45 parts of chloroprene rubber, 25 parts of nitrile rubber, 20 parts of polyvinyl chloride, 15 parts of thermoplastic polyurethane, 15 parts of graphene, 10 parts of flame retardant, 10 parts of vulcanizing agent, 2 parts of antioxidant, 2 parts of stabilizer and 2 parts of silicone oil.
4. The rubber material with high oil resistance and skid resistance as claimed in claim 1, is characterized by comprising the following raw materials in parts by weight: 50 parts of chloroprene rubber, 30 parts of nitrile rubber, 25 parts of polyvinyl chloride, 20 parts of thermoplastic polyurethane, 20 parts of graphene, 15 parts of flame retardant, 15 parts of vulcanizing agent, 3 parts of antioxidant, 3 parts of stabilizer and 3 parts of silicone oil.
5. The rubber material with high oil resistance and skid resistance as claimed in claim 1, wherein the flame retardant is one or a mixture of antimony trioxide, magnesium hydroxide and aluminum hydroxide.
6. The rubber material with high oil resistance and skid resistance as claimed in claim 1, wherein the vulcanizing agent is sulfur.
7. The rubber material with high oil resistance and skid resistance as claimed in claim 1, wherein the antioxidant is phosphite ester, and the stabilizer is one or more of antioxidant RD, antioxidant 124 and antioxidant MB.
8. The preparation method of the rubber material with high oil resistance and skid resistance is characterized by comprising the following preparation steps:
s1, stirring and plasticating the chloroprene rubber and the butadiene-acrylonitrile rubber to obtain a mixed master batch;
s2, adding polyvinyl chloride, thermoplastic polyurethane, graphene and a flame retardant into the mixed master batch obtained in the step S1, and mixing at the mixing temperature of 110-140 ℃ for 25-30 minutes to obtain a second mixture;
s3, placing the second mixture at room temperature for 24 hours, finally adding a vulcanizing agent and silicone oil, adding the mixed rubber material into a roll of an open mill, uniformly smashing, thinly passing for 2-3 times, adjusting the roller distance of the thin pass to be 0.5-0.7mm, then discharging the sheet, wherein the thickness of the discharged sheet is 8-12 mm, and discharging the sheet again when no bubbles exist; die pressing: and (3) putting the mixed rubber material into a molding press for compression molding.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011641639.XA CN112831107A (en) | 2020-12-31 | 2020-12-31 | High-oil-resistance anti-slip rubber material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011641639.XA CN112831107A (en) | 2020-12-31 | 2020-12-31 | High-oil-resistance anti-slip rubber material |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112831107A true CN112831107A (en) | 2021-05-25 |
Family
ID=75927000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011641639.XA Pending CN112831107A (en) | 2020-12-31 | 2020-12-31 | High-oil-resistance anti-slip rubber material |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112831107A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117534885A (en) * | 2023-12-20 | 2024-02-09 | 青岛威尔驰液压科技有限公司 | Wear-resistant fireproof heat-insulating rubber composite material and preparation method and application thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101538380A (en) * | 2009-04-14 | 2009-09-23 | 张云龙 | Cable sheath material for coal mine |
CN107011558A (en) * | 2017-05-25 | 2017-08-04 | 马成耀 | A kind of power generator yielding rubber and preparation method thereof |
-
2020
- 2020-12-31 CN CN202011641639.XA patent/CN112831107A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101538380A (en) * | 2009-04-14 | 2009-09-23 | 张云龙 | Cable sheath material for coal mine |
CN107011558A (en) * | 2017-05-25 | 2017-08-04 | 马成耀 | A kind of power generator yielding rubber and preparation method thereof |
Non-Patent Citations (1)
Title |
---|
化学工业出版社组织编写: "《中国化工产品大全 上卷》", 31 January 2005, 化学工业出版社 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117534885A (en) * | 2023-12-20 | 2024-02-09 | 青岛威尔驰液压科技有限公司 | Wear-resistant fireproof heat-insulating rubber composite material and preparation method and application thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109401085A (en) | A kind of EPT rubber packing item and preparation method thereof | |
CN102276953B (en) | Acrylate rubber (ACM) and ethylene acrylate rubber (AEM) combined composition | |
CN105086299B (en) | A kind of low temperature resistant, low pressure becomes inlet manifold gasket material and preparation method thereof | |
CN102993575A (en) | Ethylene propylene diene monomer (EPDM) composition for low-hardness glue injection | |
CN111534105A (en) | Anti-aging silicone rubber sealing material for high-speed rail sealing element and preparation method thereof | |
CN111117012A (en) | Sole of boot and preparation method thereof | |
CN112831107A (en) | High-oil-resistance anti-slip rubber material | |
CN103804882A (en) | High-performance chlorohydrin rubber and preparation method thereof | |
CN114456456B (en) | Low-temperature-resistant oil-resistant nitrile butadiene rubber composite material and preparation method thereof | |
CN109824966B (en) | Wear-resistant oil-resistant engineering sole material and preparation method thereof | |
CN113321859B (en) | Ultralow-temperature oil-resistant nitrile rubber material for plastic filter and preparation method thereof | |
CN109021342B (en) | High-performance hydrogenated nitrile-based rubber compound and preparation method thereof | |
CN115230266A (en) | Multilayer structure wide-temperature-range oil-resistant sealing product and preparation method and application thereof | |
CN103059363A (en) | Special type chloroprene rubber | |
CN115028927B (en) | Ultralow-hardness high-resilience low-pressure-change ethylene propylene diene monomer rubber material and preparation method thereof | |
CN114181470B (en) | Acid-resistant rubber composition and application thereof, vulcanized rubber and preparation method and application thereof | |
CN108912429A (en) | A kind of ozone proof and corrosion resistant type rubber material and its preparation process | |
CN111560148A (en) | Low-temperature-resistant fluororubber material for gearbox oil seal and preparation method thereof | |
DE102021122863A1 (en) | Injection-moulded shoe sole material, shoe sole containing the material and manufacturing method and application thereof | |
JP2000336210A (en) | Oil-resistant, weather-resistant rubber composition and laminate | |
CN111981125A (en) | High-strength high-resilience low-temperature-resistant sealing ring and preparation method thereof | |
KR102677263B1 (en) | Anti-scattering composition including natural rubberhaving core-shell structure capable of realizing color | |
CN104761765A (en) | Nitrile rubber of peroxide fast curing system and preparation method thereof | |
CN111944219B (en) | Oil seal HNBR rubber for engine and preparation method thereof | |
CN113736153B (en) | Sealing gasket and preparation method and application thereof |
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 |