CN111500075A - Novel environment-friendly plasticizer - Google Patents

Novel environment-friendly plasticizer Download PDF

Info

Publication number
CN111500075A
CN111500075A CN202010462974.7A CN202010462974A CN111500075A CN 111500075 A CN111500075 A CN 111500075A CN 202010462974 A CN202010462974 A CN 202010462974A CN 111500075 A CN111500075 A CN 111500075A
Authority
CN
China
Prior art keywords
parts
reaction kettle
epoxy
oleate
stirring
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
Application number
CN202010462974.7A
Other languages
Chinese (zh)
Inventor
谢钢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Huayue New Material Technology Co ltd
Original Assignee
Shandong Huayue New Material Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Huayue New Material Technology Co ltd filed Critical Shandong Huayue New Material Technology Co ltd
Priority to CN202010462974.7A priority Critical patent/CN111500075A/en
Publication of CN111500075A publication Critical patent/CN111500075A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/10Esters; Ether-esters
    • C08K5/11Esters; Ether-esters of acyclic polycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/0008Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0016Plasticisers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/05Alcohols; Metal alcoholates
    • C08K5/053Polyhydroxylic alcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/15Heterocyclic compounds having oxygen in the ring
    • C08K5/151Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1515Three-membered rings
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/014Additives containing two or more different additives of the same subgroup in C08K

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)
  • Lubricants (AREA)

Abstract

The invention discloses a novel environment-friendly plasticizer which comprises the following components (in parts by weight): 40-50 parts of tri-n-butyl citrate, 40-50 parts of acetyl tributyl citrate, 65-75 parts of epoxy octyl soybean oleate, 80-90 parts of epoxy methyl acetylricinoleate, 55-65 parts of epoxy butyl oleate, 20-30 parts of triethanolamine, 30-40 parts of glycerol and 25-35 parts of vegetable oil; according to the invention, the tri-n-butyl citrate, the acetyl tributyl citrate, the epoxy octyl soybean oleate, the epoxy acetyl methyl ricinoleate, the epoxy butyl oleate, the triethanolamine, the glycerol and the vegetable oil are dissolved together to prepare the environment-friendly plasticizer through a scientific and reasonable proportion, and the tri-n-butyl citrate, the acetyl tributyl citrate, the epoxy octyl soybean oleate, the epoxy acetyl methyl ricinoleate, the epoxy butyl oleate, the triethanolamine, the glycerol and the vegetable oil are nontoxic substances, so that the environment-friendly plasticizer does not cause harm to human bodies and accords with the existing environment-friendly concept.

Description

Novel environment-friendly plasticizer
Technical Field
The invention relates to the technical field of plasticizers, in particular to a novel environment-friendly plasticizer.
Background
The plasticizer is a high molecular material auxiliary agent and also phthalate esters in environmental estrogen, and the plasticizer is various, and the most common variety is DEHP (trade name DOP); the chemical name of DEHP is di (2-ethylhexyl) phthalate, which is a colorless and tasteless liquid and is widely applied in industry.
The plasticizer is a polymer material assistant widely used in industry, and the flexibility of the plasticizer can be enhanced by adding the plasticizer in plastic processing, the plasticizer is easy to process, and the plasticizer can be legally used for industrial application.
However, some plasticizers may have toxicity due to different components, and are used in various products based on polyvinyl chloride (PVC), Polyurethane (PU), Natural Rubber (NR), styrene rubber (SBR), nitrile rubber (NBR), and Chloroprene Rubber (CR), and the plasticizers have improved flexibility and are used as softeners, and the conventional plasticizers contain many harmful substances as raw materials, and are easily harmful to the body after long-term use, so that there is a need for a novel nontoxic environment-friendly plasticizer.
Disclosure of Invention
The invention aims to provide a novel environment-friendly plasticizer to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a novel environment-friendly plasticizer comprises the following components (in parts by weight):
40-50 parts of tri-n-butyl citrate, 40-50 parts of acetyl tributyl citrate, 65-75 parts of epoxy octyl soybean oleate, 80-90 parts of epoxy methyl acetylricinoleate, 55-65 parts of epoxy butyl oleate, 20-30 parts of triethanolamine, 30-40 parts of glycerol and 25-35 parts of vegetable oil.
The vegetable oil is characterized by comprising the following components, by weight, 45 parts of tri-n-butyl citrate, 45 parts of acetyl tributyl citrate, 68 parts of epoxy soybean octyl oleate, 85 parts of epoxy acetyl ricinoleic acid methyl ester, 57 parts of epoxy butyl oleate, 26 parts of triethanolamine, 36 parts of glycerol and 32 parts of vegetable oil.
The novel environment-friendly plasticizer is prepared by the following steps:
s1, respectively weighing tri-n-butyl citrate, acetyl tributyl citrate, epoxy octyl soybean oleate, epoxy acetyl methyl ricinoleate, epoxy butyl oleate, triethanolamine, glycerol and vegetable oil by an electronic scale according to the weight;
s2, sequentially adding the weighed tri-n-butyl citrate, acetyl tributyl citrate, epoxy soybean octyl oleate, epoxy acetyl ricinoleic acid methyl ester and epoxy butyl oleate into a reaction kettle, adjusting the temperature of the reaction kettle to 80-100 ℃, and continuously stirring through the reaction kettle at the stirring speed of 400 r/min;
s3, stirring for 5-8 minutes at the temperature of 80-100 ℃ through a reaction kettle, adding the weighed triethanolamine into the reaction kettle, adjusting the temperature of the reaction kettle to 160-170 ℃, and continuously stirring through the reaction kettle at the same time, wherein the stirring speed of the reaction kettle is 400 r/min;
s4, stirring for 15-20 minutes at 160-170 ℃ through a reaction kettle, sequentially adding the weighed glycerol and vegetable oil into the reaction kettle, adjusting the temperature of the reaction kettle to 190-200 ℃, and continuously stirring through the reaction kettle at the same time, wherein the stirring speed of the reaction kettle is 400 r/min;
s5, stirring the mixture for 120-150 minutes by a reaction kettle at the temperature of 190-200 ℃, adjusting the temperature of the reaction kettle to 65 ℃, adjusting the stirring speed of the reaction kettle to 200r/min, and stirring the mixture for 360 minutes by the reaction kettle at the temperature of 65 ℃ and keeping the stirring speed of the reaction kettle at 200r/min, thereby preparing a novel environment-friendly plasticizer mixed solution;
and S6, after the stirring of the reaction kettle is finished, adjusting the temperature of the reaction kettle to normal temperature, recovering the mixed solution to the room temperature under the condition of stirring speed of 200r/min, and then carrying out vacuum dehydration to prepare the novel environment-friendly plasticizer.
Compared with the prior art, the invention has the beneficial effects that:
according to the environment-friendly plasticizer, the tri-n-butyl citrate, the acetyl tributyl citrate, the epoxy soybean octyl oleate, the epoxy acetyl ricinoleic acid methyl ester, the epoxy butyl oleate, the triethanolamine, the glycerol and the vegetable oil are dissolved together through a scientific and reasonable proportion to prepare the environment-friendly plasticizer, the tri-n-butyl citrate, the acetyl ricinoleic acid methyl ester, the epoxy soybean octyl oleate, the epoxy acetyl ricinoleic acid methyl ester, the epoxy butyl oleate, the glycerol and the vegetable oil are uniformly mixed together through the triethanolamine, the stability of the plasticizer is improved, and the tri-n-butyl citrate, the acetyl tributyl citrate, the epoxy soybean octyl oleate, the epoxy acetyl ricinoleic acid methyl ester, the epoxy butyl oleate, the triethanolamine, the glycerol and the vegetable oil are free of toxic substances, do not harm to human bodies, and accord with the existing environment-friendly concept.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In an embodiment, the present invention provides a technical solution: a novel environment-friendly plasticizer comprises the following components (in parts by weight): 45 parts of tri-n-butyl citrate, 45 parts of acetyl tributyl citrate, 68 parts of epoxy octyl soybean oleate, 85 parts of epoxy methyl acetylricinoleate, 57 parts of epoxy butyl oleate, 26 parts of triethanolamine, 36 parts of glycerol and 32 parts of vegetable oil.
Wherein, the tri-n-butyl citrate is dissolved in methanol, lactone, carbon tetrachloride, glacial acetic acid, mineral oil, and the like; plasticization encourage mainly used as cellulose resin and vinyl resin; the tri-n-butyl citrate is an ester compound, is colorless and transparent liquid with high boiling point, is slightly soluble in water and is mutually soluble with most organic solvents; the tri-n-butyl citrate is low in toxicity, can be used as a nontoxic plasticizer, is commonly called an environment-friendly plasticizer, and can replace phthalate plasticizers with limited application range.
The acetyl tributyl citrate is a citrate plasticizer which is widely applied, has the characteristics of no toxicity, no odor, heat resistance, cold resistance, light resistance and excellent water resistance, and can be used as a plasticizer for cellulose plastics and vinyl plastics.
Wherein, the epoxidized octyl soyate is an efficient nontoxic plasticizer for PVC.
Wherein, the epoxy acetyl ricinoleic acid methyl ester is a polyvinyl chloride plasticizer. Good thermal and light stability, excellent cold resistance, high transparency and low toxicity.
Wherein, the epoxy butyl oleate is a light yellow transparent oily liquid; insoluble in water, soluble in chloroform, ether, ketone, and benzene; the epoxy butyl oleate is used as a plasticizer and a stabilizer for plastics and rubber.
Wherein, the triethanolamine is colorless to light yellow transparent viscous liquid with slight ammonia smell and becomes colorless to light yellow cubic crystal system crystal at low temperature; when the color of the product is exposed in the air, the color gradually becomes darker; is easily soluble in water, ethanol, acetone, glycerol, ethylene glycol, etc., and slightly soluble in benzene, diethyl ether, carbon tetrachloride, etc.; triethanolamine can be used as an organic solvent for blending together tri-n-butyl citrate, acetyl tributyl citrate, epoxidized octyl soyate, epoxidized methyl acetylricinoleate, epoxidized butyl oleate, glycerin and vegetable oils.
The glycerol is used for preparing various preparations, solvents and moisture absorbents, and can be dissolved in the plasticizer, so that the stability of the plasticizer is improved.
Wherein the vegetable oil is a natural compound compounded from fatty acid and glycerol, and has the function of a plasticizer.
The novel environment-friendly plasticizer is prepared by the following steps:
s1, respectively weighing tri-n-butyl citrate, acetyl tributyl citrate, epoxy octyl soybean oleate, epoxy acetyl methyl ricinoleate, epoxy butyl oleate, triethanolamine, glycerol and vegetable oil by an electronic scale according to the weight;
s2, sequentially adding the weighed tri-n-butyl citrate, acetyl tributyl citrate, epoxy soybean octyl oleate, epoxy acetyl ricinoleic acid methyl ester and epoxy butyl oleate into a reaction kettle, adjusting the temperature of the reaction kettle to 80-100 ℃, and continuously stirring through the reaction kettle at the stirring speed of 400 r/min;
s3, stirring for 5-8 minutes at the temperature of 80-100 ℃ through a reaction kettle, adding the weighed triethanolamine into the reaction kettle, adjusting the temperature of the reaction kettle to 160-170 ℃, and continuously stirring through the reaction kettle at the same time, wherein the stirring speed of the reaction kettle is 400 r/min;
s4, stirring for 15-20 minutes at 160-170 ℃ through a reaction kettle, sequentially adding the weighed glycerol and vegetable oil into the reaction kettle, adjusting the temperature of the reaction kettle to 190-200 ℃, and continuously stirring through the reaction kettle at the same time, wherein the stirring speed of the reaction kettle is 400 r/min;
s5, stirring the mixture for 120-150 minutes by a reaction kettle at the temperature of 190-200 ℃, adjusting the temperature of the reaction kettle to 65 ℃, adjusting the stirring speed of the reaction kettle to 200r/min, and stirring the mixture for 360 minutes by the reaction kettle at the temperature of 65 ℃ and keeping the stirring speed of the reaction kettle at 200r/min, thereby preparing a novel environment-friendly plasticizer mixed solution;
and S6, after the stirring of the reaction kettle is finished, adjusting the temperature of the reaction kettle to normal temperature, recovering the mixed solution to the room temperature under the condition of stirring speed of 200r/min, and then carrying out vacuum dehydration to prepare the novel environment-friendly plasticizer.
In summary, the following steps: the environment-friendly plasticizer is prepared by dissolving tri-n-butyl citrate, tributyl acetylcitrate, epoxy octyl soybean oleate, epoxy methyl acetylricinoleate, epoxy butyl oleate, triethanolamine, glycerol and vegetable oil together through a scientific and reasonable proportion, the tri-n-butyl citrate, the tri-n-butyl acetylcitrate, the epoxy octyl soybean oleate, the epoxy methyl acetylricinoleate, the epoxy butyl oleate, the glycerol and the vegetable oil are uniformly mixed together through the triethanolamine, the stability of the plasticizer is improved, and the tri-n-butyl citrate, the tri-n acetylcitrate, the epoxy octyl soybean oleate, the epoxy methyl acetylricinoleate, the epoxy butyl oleate, the triethanolamine, the glycerol and the vegetable oil have no toxic substances, do not cause harm to human bodies and accord with the existing environment-friendly concept.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. A novel environment-friendly plasticizer is characterized by comprising the following components (in parts by weight):
40-50 parts of tri-n-butyl citrate, 40-50 parts of acetyl tributyl citrate, 65-75 parts of epoxy octyl soybean oleate, 80-90 parts of epoxy methyl acetylricinoleate, 55-65 parts of epoxy butyl oleate, 20-30 parts of triethanolamine, 30-40 parts of glycerol and 25-35 parts of vegetable oil.
2. A novel environmentally friendly plasticizer according to claim 1, wherein: the vegetable oil is characterized by comprising the following raw materials, by weight, 45 parts of tri-n-butyl citrate, 45 parts of acetyl tributyl citrate, 68 parts of epoxy octyl soybean oleate, 85 parts of epoxy acetyl methyl ricinoleate, 57 parts of epoxy butyl oleate, 26 parts of triethanolamine, 36 parts of glycerol and 32 parts of vegetable oil.
3. A novel environmentally friendly plasticizer according to claim 2, wherein: the method comprises the following steps:
s1, respectively weighing tri-n-butyl citrate, acetyl tributyl citrate, epoxy octyl soybean oleate, epoxy acetyl methyl ricinoleate, epoxy butyl oleate, triethanolamine, glycerol and vegetable oil by an electronic scale according to the weight;
s2, sequentially adding the weighed tri-n-butyl citrate, acetyl tributyl citrate, epoxy soybean octyl oleate, epoxy acetyl ricinoleic acid methyl ester and epoxy butyl oleate into a reaction kettle, adjusting the temperature of the reaction kettle to 80-100 ℃, and continuously stirring through the reaction kettle at the stirring speed of 400 r/min;
s3, stirring for 5-8 minutes at the temperature of 80-100 ℃ through a reaction kettle, adding the weighed triethanolamine into the reaction kettle, adjusting the temperature of the reaction kettle to 160-170 ℃, and continuously stirring through the reaction kettle at the same time, wherein the stirring speed of the reaction kettle is 400 r/min;
s4, stirring for 15-20 minutes at 160-170 ℃ through a reaction kettle, sequentially adding the weighed glycerol and vegetable oil into the reaction kettle, adjusting the temperature of the reaction kettle to 190-200 ℃, and continuously stirring through the reaction kettle at the same time, wherein the stirring speed of the reaction kettle is 400 r/min;
s5, stirring the mixture for 120-150 minutes by a reaction kettle at the temperature of 190-200 ℃, adjusting the temperature of the reaction kettle to 65 ℃, adjusting the stirring speed of the reaction kettle to 200r/min, and stirring the mixture for 360 minutes by the reaction kettle at the temperature of 65 ℃ and keeping the stirring speed of the reaction kettle at 200r/min, thereby preparing a novel environment-friendly plasticizer mixed solution;
and S6, after the stirring of the reaction kettle is finished, adjusting the temperature of the reaction kettle to normal temperature, recovering the mixed solution to the room temperature under the condition of stirring speed of 200r/min, and then carrying out vacuum dehydration to prepare the novel environment-friendly plasticizer.
CN202010462974.7A 2020-05-27 2020-05-27 Novel environment-friendly plasticizer Pending CN111500075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010462974.7A CN111500075A (en) 2020-05-27 2020-05-27 Novel environment-friendly plasticizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010462974.7A CN111500075A (en) 2020-05-27 2020-05-27 Novel environment-friendly plasticizer

Publications (1)

Publication Number Publication Date
CN111500075A true CN111500075A (en) 2020-08-07

Family

ID=71872126

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010462974.7A Pending CN111500075A (en) 2020-05-27 2020-05-27 Novel environment-friendly plasticizer

Country Status (1)

Country Link
CN (1) CN111500075A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103788406A (en) * 2014-02-11 2014-05-14 汤宁 Biological environment-friendly plasticizer capable of completely replacing dioctyl-phthalate (DOP)
CN108530681A (en) * 2018-01-23 2018-09-14 四川大学 A method of improving epoxidized methyl acetorieinoleate plasticizer and polyvinyl chloride resin compatibility
CN108559278A (en) * 2018-03-22 2018-09-21 广州富飞化工科技有限公司 A kind of environment-friendly plasticizer
CN109777046A (en) * 2017-11-10 2019-05-21 丹阳市易通安全技术服务有限公司 A kind of new plasticizer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103788406A (en) * 2014-02-11 2014-05-14 汤宁 Biological environment-friendly plasticizer capable of completely replacing dioctyl-phthalate (DOP)
CN109777046A (en) * 2017-11-10 2019-05-21 丹阳市易通安全技术服务有限公司 A kind of new plasticizer
CN108530681A (en) * 2018-01-23 2018-09-14 四川大学 A method of improving epoxidized methyl acetorieinoleate plasticizer and polyvinyl chloride resin compatibility
CN108559278A (en) * 2018-03-22 2018-09-21 广州富飞化工科技有限公司 A kind of environment-friendly plasticizer

Similar Documents

Publication Publication Date Title
CN103804669B (en) A kind of preparation method being used as the castor oil-base polyester of PVC softening agent
CN103159970A (en) Preparation method of edible film with antibacterial and antioxidant functions
US20160237050A1 (en) Synthesis process for diacetyl epoxy glyceryl oleate
CN111040126A (en) Silane modified epoxidized soybean oil-polylactic acid polyurethane composition and preparation method thereof
CN112111112B (en) High-elasticity rubber and plastic gloves containing magnetic microcapsules and preparation method thereof
CN107176910B (en) A kind of acetylation citric acid aliphatic ester plasticizer and its preparation method and application
CN108752506A (en) Biomass-based monomer internal plasticization PVC material of sulfydryl and preparation method thereof
CN113402891A (en) Migration-resistant micro-crosslinked structure environment-friendly plasticizer and preparation method thereof
CN111500075A (en) Novel environment-friendly plasticizer
CN109438772B (en) Edible packaging film and preparation method and application thereof
CN104945607B (en) A kind of environmental protection polyester plasticizer and its preparation method and application
CN107236269A (en) A kind of degradable combination film and preparation method thereof
CN107286547B (en) Preparation method of chitin liquefied product/polyvinyl alcohol blending film
CN111909473B (en) Extremely low-precipitation high-elasticity PVC glove composition and method for preparing gloves
CN110804029B (en) Epoxy plasticizer and preparation method thereof
CN106243557B (en) Environment-friendly type plastic adhesive floor
CN104945675A (en) Epoxidized soybean oil plasticized ethyl cellulose membrane and method for preparing the same
CN108102205B (en) Disposable green environment-friendly gloves and preparation method thereof
CN111892787B (en) Tear-resistant powder-free high-elasticity PVC glove composition and method for preparing gloves
CN106589468B (en) Controlled degradation cultivates basin and preparation method thereof
CN105273223B (en) Hydroxo complex heat stabilizer, composite thermal stabilizer and poly (vinyl chloride) resin composition and preparation method
CN106317430A (en) Preparation method of potato full-degradable plastic film
CN105418965A (en) Method for preparing anti-aging epoxidized soybean oil plasticizer
CN106867322A (en) A kind of new opplication of waste old polystyrene foamed plastic
CN106188617B (en) A kind of cashew nut phenolic group ether type plasticizer and its synthetic method and application

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20200807