CN111170828B - Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst - Google Patents

Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst Download PDF

Info

Publication number
CN111170828B
CN111170828B CN202010053617.5A CN202010053617A CN111170828B CN 111170828 B CN111170828 B CN 111170828B CN 202010053617 A CN202010053617 A CN 202010053617A CN 111170828 B CN111170828 B CN 111170828B
Authority
CN
China
Prior art keywords
methallyl
methallyl alcohol
salt
catalyst
cupric
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.)
Active
Application number
CN202010053617.5A
Other languages
Chinese (zh)
Other versions
CN111170828A (en
Inventor
张华星
杨志杰
吕海霞
蒋勇军
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.)
Ningbo Jinlai Chemical Co ltd
Zhejiang University of Science and Technology ZUST
Original Assignee
Ningbo Institute of Technology of ZJU
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 Ningbo Institute of Technology of ZJU filed Critical Ningbo Institute of Technology of ZJU
Priority to CN202010053617.5A priority Critical patent/CN111170828B/en
Publication of CN111170828A publication Critical patent/CN111170828A/en
Application granted granted Critical
Publication of CN111170828B publication Critical patent/CN111170828B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/09Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
    • C07C29/095Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of esters of organic acids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/72Copper
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00Preparation of carboxylic acid esters
    • C07C67/10Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

A method for preparing methallyl alcohol using an in situ generated Cu (I) catalyst comprising: dissolving a cupric salt in water, adding a reducing organic substance, stirring, and dropwise adding the mixture into a methallyl alcohol preparation system; or (II) adding a divalent copper salt into a methallyl alcohol preparation system, and then dropwise adding a reduced organic matter aqueous solution to perform catalytic reaction; or (III) adding a reduced organic matter aqueous solution into a methallyl alcohol preparation system, and then dropwise adding a cupric salt aqueous solution to perform catalytic reaction; or (IV) mixing the solid cupric salt and the solid reducing organic matter in proportion, and adding the mixture into a methallyl alcohol preparation system in batches for catalytic reaction. The reaction system has the characteristics of high activity and high selectivity, the conversion rate and the selectivity of the methallyl alcohol are obviously improved, the generation of a byproduct methallyl ether is reduced, the bivalent copper is used for replacing the monovalent copper, the synthesis cost is obviously reduced, and the market competitiveness is improved.

Description

Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst
Technical Field
The invention relates to a catalytic reaction system, in particular to a method for preparing an active monovalent copper ion catalyst by in-situ reduction of a divalent copper salt, which is used for preparing methallyl alcohol and has good effect; in particular to a method for preparing methallyl alcohol by using an in-situ generated Cu (I) catalyst.
Background
Many nucleophilic substitution reactions use cuprous salt as a catalyst, but the use of cuprous salt as a catalyst often has the characteristics of high cost and low activity caused by long-term storage, and the cuprous salt can be reduced into cuprous ions under the action of a water-soluble reducing compound.
Methallyl alcohol is an important organic intermediate, and has wide application in the aspects of perfume synthesis, resin synthesis, surfactant synthesis and the like. The current synthetic route of methallyl alcohol is mainly as follows: the first method is a halohydrocarbon hydrolysis route, and patents US2072015, US2323781, US2313767 and CN101759528B respectively adopt different bases and catalysts to hydrolyze methallyl chloride to obtain methallyl alcohol; however, the direct hydrolysis method of halogenated hydrocarbon usually generates a large amount of wastewater and salt, and about 15% of the byproduct methyl allyl ether is generated. Another method is a two-step method for preparing methallyl alcohol by halohydrocarbon esterification and hydrolysis, which is mentioned in patent application documents with publication numbers of CN103242139A and CN105037097A, using methallyl chloride as a raw material, firstly reacting with a sodium acetate aqueous solution to obtain methallyl acetate, and secondly hydrolyzing with a sodium hydroxide aqueous solution to obtain methallyl alcohol; however, in both of the above two synthetic processes, cuprous salts such as cuprous chloride and cuprous bromide are used as catalysts, and the cuprous salt catalysts are expensive, and have variable activity, unstable catalytic activity, and low conversion rate and selectivity.
Disclosure of Invention
Aiming at the defects of the synthetic method in the prior art, the invention provides a method for preparing methallyl alcohol by using an in-situ generated Cu (I) catalyst, the method uses cheap divalent copper salt to carry out catalytic reaction on monovalent copper salt obtained by immediate reduction, the reaction system has the characteristics of high activity and high selectivity, the conversion rate and the selectivity of methallyl alcohol are obviously improved, the generation of a byproduct methallyl ether is reduced, the divalent copper is used for replacing the monovalent copper, the synthetic cost is obviously reduced, and the market competitiveness is improved.
In order to solve the technical problems, the invention adopts the technical scheme that: a process for preparing methallyl alcohol using an in situ generated Cu (I) catalyst, the process comprising:
dissolving a divalent copper salt in water, adding a reduced organic matter in a 0.1-50mol multiple, stirring at normal temperature, and dropwise adding the mixture to a methallyl alcohol preparation system; the methallyl alcohol preparation system changes the color of a green cupric salt solution into the color of a brownish red cuprous salt;
or alternatively
Secondly, adding a divalent copper salt into a methallyl alcohol preparation system, and then dropwise adding a reduction organic matter aqueous solution into a reaction system to perform catalytic reaction; the color of the reaction system is changed from green cupric salt solution to brown red cuprous salt;
or
(III) adding a reducing organic matter aqueous solution into a methallyl alcohol preparation system, and then dropwise adding a cupric salt aqueous solution into a reaction system to perform catalytic reaction; the color of the reaction system is changed from green cupric salt solution to brown red cuprous salt;
or alternatively
(IV) mixing the solid cupric salt and the solid reducing organic matter according to a proportion, adding the mixture into a methallyl alcohol preparation system in batches, and carrying out catalytic reaction; the color of the reaction system is changed from green cupric salt solution to brownish red cuprous salt.
Preferably, the methallyl alcohol preparation system is a system for preparing methallyl alcohol by hydrolyzing methallyl chloride, or a system for preparing methallyl carboxylate by hydrolyzing methallyl chloride and carboxylate and then preparing methallyl alcohol.
Preferably, the cupric salt of the present invention is one or more of cupric chloride, cupric nitrate, cupric sulfate, cupric acetate and all the copper salt hydrates thereof.
Preferably, the reduced organic substance (water-soluble reducing substance) of the present invention is one or more of glucose, sodium gluconate, citric acid, sodium citrate, vitamin C, isovitamin C, sodium ascorbate, and sodium isoascorbate.
Preferably, the weight ratio of the bivalent copper salt and the reduced organic matter is 0.5-1:1-10; preferably 1:2.
Preferably, the catalytic system of the invention is used for preparing the carboxylic acid methallyl ester by using methallyl chloride and carboxylate, and hydrolyzing the carboxylic acid methallyl ester into methallyl alcohol, wherein the using amount of the cupric salt catalyst is 1-50% of the mass of the methallyl chloride.
The invention has the advantages and beneficial effects that:
1. the method is characterized in that in a reaction system, in-situ generated Cu (I) obtained by directly reacting is used as a catalyst for the first time; according to the method, cheap divalent copper salt is used, and the obtained monovalent copper salt is subjected to catalytic reaction through instant reduction, so that the reaction system has the characteristics of high activity and high selectivity, the conversion rate and selectivity of methallyl alcohol are obviously improved, and the generation of a byproduct methallyl ether is reduced. And the bivalent copper is used for replacing the univalent copper, so that the synthesis cost is obviously reduced, and the market competitiveness is improved.
2. In the invention, the monovalent copper ions obtained by in-situ reduction can show stronger catalytic activity than that of direct monovalent copper salts, and the system is applied to catalysis of nucleophilic substitution reaction in which halogenated hydrocarbon participates in a water phase system, so that the yield and the selectivity can be obviously improved.
Detailed description of the preferred embodiments
The present invention is further described in detail with reference to the following examples, which should be construed as limiting the scope of the invention as claimed.
Example 1
2000g of methallyl chloride, 1600g of sodium formate and 1000g of water are added to a reaction kettle and stirred to dissolve. 50g of copper sulfate and 200g of a solid mixture of vitamin C were added in portions, and the reaction temperature was controlled to be in a reflux state. After 4h of reaction, gas phase detection shows that the reaction is almost finished, and the content of each component is 0.1% of raw material methyl allyl chloride, 95% of methyl allyl formate alcohol ester, 3% of methyl allyl alcohol and 0.5% of methyl allyl ether.
Example 2
To the reactor, 2000g of methallyl chloride was added, 1600g of sodium formate was added, 500g of water was added, and 50g of copper chloride was added. 700g of a 19% vitamin C aqueous solution was added dropwise thereto, and the reaction temperature was controlled to be in a reflux state. After 4h of reaction, gas phase detection shows that the reaction is almost finished, and the content of each component is 0.2 percent of raw material methyl allyl chloride, 96 percent of methyl allyl formate alcohol ester, 3.5 percent of methyl allyl alcohol and 0.4 percent of methyl allyl ether.
Example 3
2000g of methallyl chloride, 1800g of sodium acetate, 500g of water and 60g of copper sulfate are added into a reaction kettle. 800g of 20 percent sodium gluconate aqueous solution is dripped, and the reaction temperature is controlled in a reflux state. After 4 hours of reaction, gas phase detection shows that the reaction is basically finished, and the content of each component is 0.5 percent of raw material methyl allyl chloride, 92 percent of acetic acid methyl allyl alcohol ester, 5.5 percent of methyl allyl alcohol and 0.3 percent of methyl allyl ether.
Example 4
2000g of methallyl chloride, 1800g of sodium acetate and 1000g of water are added into a reaction kettle, and a solid mixture of 50g of copper sulfate and 200g of vitamin C is added in batches, wherein the reaction temperature is controlled to be in a reflux state. After 4h of reaction, gas phase detection shows that the reaction is almost finished, and the content of each component is 0.5 percent of raw material methyl allyl chloride, 91 percent of acetic acid methyl allyl alcohol ester, 6.5 percent of methyl allyl alcohol and 0.8 percent of methyl allyl ether.
Example 5
Adding a reaction product obtained in any one of the embodiments 1-4 into a reaction kettle, carrying out layered separation to obtain a crude product, slowly dropwise adding a sodium hydroxide aqueous solution with the mass percent of 5%, heating and refluxing for 2 hours, comprehensively hydrolyzing an ester (the obtained formic acid or the methyl allyl acetate in the embodiments) to obtain a methyl allyl alcohol crude product, standing and layering, drying and rectifying the upper layer to obtain the methyl allyl alcohol product, wherein the yield is over 91%. Drying and rectifying to obtain a product methallyl alcohol, and performing nuclear magnetic detection, wherein the detection result is as follows:
1 h NMR,. Delta.1.30 (s, 3H), 2.0 (s, 1H), 4.8 (m, 1H), 5.21 (m, 1H), 5.35 (m, 1H) 5.81 (d, 1H); the product obtained in the application is proved to be the target product.
The examples show that the methallyl alcohol prepared by the method has the advantages of high yield, few side reactions, simple reaction steps and low raw material cost.
The above detailed description is given of the preferred embodiments of the present invention, and it is not intended that the present invention be limited to the above detailed description, and it should be understood that various changes, substitutions and alterations can be made by those skilled in the art without departing from the spirit of the present invention.

Claims (5)

1. A process for preparing methallyl alcohol using an in situ generated Cu (I) catalyst, characterized in that: the method comprises the following steps:
dissolving a cupric salt in water, adding a 0.1-50mol multiple of reduced organic matter, stirring at normal temperature, and dropwise adding the mixture to a methallyl alcohol preparation system; the methallyl alcohol preparation system changes the color of the green cupric salt solution into the color of brownish red cuprous salt;
or
Secondly, adding a divalent copper salt into a methallyl alcohol preparation system, and then dropwise adding a reduction organic matter aqueous solution into a reaction system to perform catalytic reaction; the color of the reaction system is changed from green cupric salt solution to brownish red cuprous salt;
or
Thirdly, adding a reducing organic matter aqueous solution into a methallyl alcohol preparation system, and then dropwise adding a cupric salt aqueous solution into a reaction system to perform catalytic reaction; the color of the reaction system is changed from green cupric salt solution to brownish red cuprous salt;
or
(IV) mixing the solid cupric salt and the solid reducing organic matter according to a proportion, adding the mixture into a methallyl alcohol preparation system in batches, and carrying out catalytic reaction; the color of the reaction system is changed from green cupric salt solution to brownish red cuprous salt;
the methallyl alcohol preparation system is a system for preparing methallyl alcohol by hydrolyzing methallyl chloride, or a system for preparing methallyl carboxylate from methallyl chloride and carboxylate and then hydrolyzing the methallyl carboxylate into methallyl alcohol;
the cupric salt is one or more of cupric chloride, cupric nitrate, cupric sulfate, cupric acetate and all cupric salt hydrates thereof;
the reducing organic matter is one or more of glucose, sodium gluconate, citric acid, sodium citrate, vitamin C, isovitamin C, sodium ascorbate and sodium isovitamin C.
2. The process for preparing methallyl alcohol with an in situ generated Cu (I) catalyst of claim 1 wherein: the weight ratio of the divalent copper salt to the reduced organic matter is 0.5-1:1-10.
3. The method of preparing methallyl alcohol with an in situ generated Cu (I) catalyst of claim 2 wherein: the weight ratio of the divalent copper salt to the reduced organic matter is 1:2.
4. The method of preparing methallyl alcohol with an in situ generated Cu (I) catalyst of claim 1 wherein: the catalyst is used for preparing methallyl alcohol by hydrolyzing methallyl chloride, and the using amount of the catalyst is 1-50% of the mass of the methallyl chloride.
5. The method of preparing methallyl alcohol with an in situ generated Cu (I) catalyst of claim 1 wherein: the catalyst is used for preparing the carboxylic acid methallyl ester by using the methallyl chloride and the carboxylate, and then hydrolyzing the carboxylic acid methallyl ester into the methallyl alcohol, wherein the using amount of the cupric salt catalyst is 1-50% of the mass of the methallyl chloride.
CN202010053617.5A 2020-01-17 2020-01-17 Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst Active CN111170828B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010053617.5A CN111170828B (en) 2020-01-17 2020-01-17 Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010053617.5A CN111170828B (en) 2020-01-17 2020-01-17 Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst

Publications (2)

Publication Number Publication Date
CN111170828A CN111170828A (en) 2020-05-19
CN111170828B true CN111170828B (en) 2023-01-03

Family

ID=70648181

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010053617.5A Active CN111170828B (en) 2020-01-17 2020-01-17 Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst

Country Status (1)

Country Link
CN (1) CN111170828B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112625257B (en) * 2020-12-11 2022-05-20 江苏大学 Preparation method of MOF-Cu and application of MOF-Cu in synthesis of diaryl sulfone compounds

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072015A (en) * 1932-10-04 1937-02-23 Shell Dev Process for the treatment of unsaturated halides
US2313767A (en) * 1940-11-22 1943-03-16 Pittsburgh Plate Glass Co Hydrolysis of allyl halides
FR2302991A1 (en) * 1975-03-07 1976-10-01 Ube Industries 2 Alkoxy 4 allyl phenols prodn. - by reacting alkoxy phenols with allyl halides in presence of base and copper catalyst
US4152530A (en) * 1978-07-24 1979-05-01 Rhone-Poulenc Inc. Process for preparing allylic alcohols from allylic halides
CN1803352A (en) * 2005-09-29 2006-07-19 江苏大学 Method for preparing nanometer copper
CN101759528A (en) * 2010-01-12 2010-06-30 宁波尖锋紫星生物科技有限公司 Synthesizing method of 2-methallyl alcohol
CN103242139A (en) * 2013-05-22 2013-08-14 南京工业大学 Method for preparing 2-methyl allyl alcohol by two-step esterification and hydrolysis
CN103588622A (en) * 2013-11-29 2014-02-19 上海多纶化工有限公司 Method for synthesizing 2-methallyl alcohol through continuous hydrolysis reaction
CN104014816A (en) * 2014-06-21 2014-09-03 吉林大学 Preparation method of antioxidant copper nanoparticle
CN105037097A (en) * 2015-06-23 2015-11-11 浙江绿科安化学有限公司 Synthetic method of 2-methallyl alcohol
CN105819489A (en) * 2016-03-13 2016-08-03 河南师范大学 Green synthesis method of cuprous chloride
CN108059584A (en) * 2017-11-02 2018-05-22 浙江大学宁波理工学院 The preparation method of methallyl alcohol
CN108191604A (en) * 2017-12-22 2018-06-22 浙江大学 A kind of continuous method for preparing 2- methallyl alcohols
CN108558600A (en) * 2018-04-08 2018-09-21 襄阳金达成精细化工有限公司 A kind of synthetic method of low stain 2- methallyl alcohols

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2072015A (en) * 1932-10-04 1937-02-23 Shell Dev Process for the treatment of unsaturated halides
US2313767A (en) * 1940-11-22 1943-03-16 Pittsburgh Plate Glass Co Hydrolysis of allyl halides
FR2302991A1 (en) * 1975-03-07 1976-10-01 Ube Industries 2 Alkoxy 4 allyl phenols prodn. - by reacting alkoxy phenols with allyl halides in presence of base and copper catalyst
US4152530A (en) * 1978-07-24 1979-05-01 Rhone-Poulenc Inc. Process for preparing allylic alcohols from allylic halides
CN1803352A (en) * 2005-09-29 2006-07-19 江苏大学 Method for preparing nanometer copper
CN101759528A (en) * 2010-01-12 2010-06-30 宁波尖锋紫星生物科技有限公司 Synthesizing method of 2-methallyl alcohol
CN103242139A (en) * 2013-05-22 2013-08-14 南京工业大学 Method for preparing 2-methyl allyl alcohol by two-step esterification and hydrolysis
CN103588622A (en) * 2013-11-29 2014-02-19 上海多纶化工有限公司 Method for synthesizing 2-methallyl alcohol through continuous hydrolysis reaction
CN104014816A (en) * 2014-06-21 2014-09-03 吉林大学 Preparation method of antioxidant copper nanoparticle
CN105037097A (en) * 2015-06-23 2015-11-11 浙江绿科安化学有限公司 Synthetic method of 2-methallyl alcohol
CN105819489A (en) * 2016-03-13 2016-08-03 河南师范大学 Green synthesis method of cuprous chloride
CN108059584A (en) * 2017-11-02 2018-05-22 浙江大学宁波理工学院 The preparation method of methallyl alcohol
CN108191604A (en) * 2017-12-22 2018-06-22 浙江大学 A kind of continuous method for preparing 2- methallyl alcohols
CN108558600A (en) * 2018-04-08 2018-09-21 襄阳金达成精细化工有限公司 A kind of synthetic method of low stain 2- methallyl alcohols

Also Published As

Publication number Publication date
CN111170828A (en) 2020-05-19

Similar Documents

Publication Publication Date Title
CN101632932B (en) Dimethyl carbonate supported catalyst directly synthesized by methanol and carbon dioxide
CN113492021B (en) Preparation method of rhodium catalyst
CN111889097B (en) Aniline hydrogenation catalyst, preparation method and application
CN101940958A (en) Method for preparing low-carbon olefine catalyst by loading iron-based synthetic gas
CN111170828B (en) Method for preparing methallyl alcohol using in situ generated Cu (I) catalyst
CN102500382B (en) Catalyst for synthesizing methanol and preparation method thereof
CN114213368A (en) Method for preparing furan dicarboxylic acid by oxidizing 5-hydroxymethylfurfural with composite catalyst
CN113731426A (en) Catalyst for synthesizing mixed alcohol by CO hydrogenation and preparation method thereof
CN116478416A (en) Porphyrin-based bimetallic MOFs material and preparation method and application thereof
CN105582926B (en) Terephthalic acid (TPA) hydrogenation catalyst
CN111187146B (en) Process for producing 2-methyl-3-buten-2-ol
CN109761799B (en) Method for catalyzing selective oxidation of glucose
CN109772345B (en) Preparation of nickel catalyst for synthesizing ester by aldehyde oxidation esterification and application of nickel catalyst and ionic liquid co-catalysis system
CN113318730B (en) δ-MnO2Catalyst, preparation method and application thereof
CN110860297B (en) Preparation method of Cu-Ag/La @ HAP catalyst and application of catalyst in preparation of lactic acid by catalytic oxidation of 1, 2-propanediol
CN111423309B (en) Method for synthesizing 1-butene-3, 4-diol through gas-solid phase continuous isomerization
CN107519873B (en) Preparation method and application of Cu-based metal catalyst
CN107602408B (en) Synthesis method of acetamino diethyl malonate
CN117427696B (en) Supported heteropolyacid salt catalyst, preparation method and application thereof
CN111302910B (en) Method for producing acetophenone and acetic acid by biomass directional catalysis
CN115490579B (en) Preparation method of hydroxyanisole
CN104801291B (en) Zn/ gold/mesoporous carbon catalysts for producing chloroethanes and preparation method thereof
CN109761783B (en) Preparation method of gluconic acid
CN118002169B (en) Catalyst for catalytic conversion of furfuryl alcohol into 1, 5-pentanediol, preparation method and application
CN113351255B (en) Co complex catalyst for preparing isobutyric acid by oxidizing isobutyraldehyde 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
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 315100 No. 1, Qian Hunan Road, Ningbo Higher Education Park, Zhejiang

Patentee after: Zhejiang University of science and engineering Ningbo

Address before: 315100 No. 1, Qian Hunan Road, Yinzhou District Higher Education Park, Ningbo, Zhejiang

Patentee before: Ningbo Institute of Technology, Zhejiang University

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20231225

Address after: 6 Guangxing Road, Binhai Industrial Park, xiaocao'e Town, Yuyao City, Ningbo City, Zhejiang Province

Patentee after: Ningbo Jinlai Chemical Co.,Ltd.

Address before: 315100 No.1 Qianhu South Road, Ningbo Higher Education Park, Ningbo City, Zhejiang Province

Patentee before: Zhejiang University of science and engineering Ningbo