CN103131487B - Synthesis method of diesel fuel depressant - Google Patents
Synthesis method of diesel fuel depressant Download PDFInfo
- Publication number
- CN103131487B CN103131487B CN201310075505.XA CN201310075505A CN103131487B CN 103131487 B CN103131487 B CN 103131487B CN 201310075505 A CN201310075505 A CN 201310075505A CN 103131487 B CN103131487 B CN 103131487B
- Authority
- CN
- China
- Prior art keywords
- initiator
- raw material
- vinyl acetate
- alcohol ester
- material liquid
- 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
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention discloses a synthesis method of a diesel fuel depressant. The synthesis method comprises the following steps of: carrying out one-pot polymerization reaction in an initiating agent and a solvent by taking poly-alpha-methylacrylic acid high-carbon alcohol ester, a polar nitrogen compound, vinyl acetic ester and vinyl benzene as raw materials; and mixing a reactant with twain and span to obtain a target product, i.e., the diesel fuel depressant. The synthesis method is free of aftertreatment and simple in process; the synergic initiating agent is adopted to initiate the polymerization reaction, and the raw materials are dropwise added in twice and sufficiently react; the reaction conditions are mild, and the polymerization reaction is carried out in the mixed solvent, so that the reaction temperature range is widened, and the reaction is more easily carried out; and a special raw material proportion is adopted, so that the produced diesel fuel depressant has good perceptibility for diesel fuel with high paraffin content and favorable cold filter plugging point reducing performance, and the low-temperature performance of the diesel fuel is remarkably improved.
Description
Technical field
The present invention relates to a kind of additive, be specifically related to a kind of synthetic method of diesel pour inhibitor.
Background technology
Diesel pour inhibitor PPD (Pour Point Depressant), also known as low temperature flow improver for diesel fuel, is a kind of important fuel dope in diesel production.Only a small amount of PPD need be added in diesel oil, crystal habit and the structure of wax in diesel oil can be changed significantly, reduce wax and form cancellated temperature and intensity, effectively reduce its cold filter clogging temperature, make the low-temperature fluidity that diesel oil keeps good, widen conveying method and the use range of diesel oil further, improve production chains and economic benefit.
China's paraffinic crude output is higher, and it is high thus to refine the diesel oil wax content obtained, and the susceptibility of pour point depressant to this diesel oil is poor both at home and abroad at present, generally can only reduce its condensation point, and is difficult to reduce its cold filter clogging temperature.Development of new diesel oil PPD, improving its susceptibility to different diesel oil, is current important research topic.
Summary of the invention
The cold filter clogging temperature problem reducing the higher diesel oil of wax content is difficult to for diesel pour inhibitor in prior art, the invention provides a kind of synthetic method of diesel pour inhibitor, solve the problem that existing diesel pour inhibitor is difficult to the cold filter clogging temperature reducing the higher diesel oil of wax content, products obtained therefrom diesel pour inhibitor of the present invention is good to the diesel oil susceptibility that wax content is high, has excellent to fall cold filter clogging temperature performance.
The synthetic method of diesel pour inhibitor of the present invention, in initiator and solvent, with poly-α-methacrylic acid high-carbon alcohol ester, polarity nitrogenous compound, vinyl acetate and vinylbenzene for raw material, one kettle way polyreaction, after reactant mixes with tween, sapn, obtain target product diesel pour inhibitor;
Described poly-α-methacrylic acid high-carbon alcohol ester: polarity nitrogenous compound: vinyl acetate: cinnamic mass ratio is 1:0.5 ~ 2:0.5 ~ 2:0.5 ~ 1.If proportioning raw materials is too low, then the pour point depression of the target product pour point depressant generated, to fall filter effect bad, if proportioning raw materials is too high, then easily generates superpolymer even solid.Adopt such proportioning raw materials scope, the susceptibility of the diesel pour inhibitor generated to the high diesel oil of wax content is good, after adding the high diesel oil of wax content, the paraffin contained in diesel oil is more easily in conjunction with eutectic, prevent the mutual bonding of wax intergranular and the growth of wax crystalline substance, diesel oil by which better filter screen, can be reached pour point depression with this, falls the effect of filter.
Raw material of the present invention, is commercially available prod, and wide material sources are simple and easy to get.
A synthetic method for diesel pour inhibitor, concrete steps comprise:
With in the reactor of whipping appts, add solvent, stir, control bath temperature is 60-95 DEG C, pass into nitrogen, add poly-α-methacrylic acid high-carbon alcohol ester and polarity nitrogenous compound, reaction starts to drip initiator for the first time, drip the mixing raw material liquid that part is made up of vinyl acetate and vinylbenzene simultaneously, dropwise after reacting 0.5-4 hour again, second time drips residue initiator, dropping simultaneously remains the mixing raw material liquid be made up of vinyl acetate and vinylbenzene and carries out polyreaction, polymer class pour point depressant is obtained after having reacted, with tween, after sapn mixing, obtain target product diesel pour inhibitor,
Described initiator first time add-on is 50% ~ 80% of initiator total mass, and second time add-on is 20% ~ 50% of initiator total mass;
The described mixing raw material liquid be made up of vinyl acetate and vinylbenzene first time add-on is 20% ~ 50% of mixing raw material liquid total mass, and second time add-on is 50% ~ 80% of mixing raw material liquid total mass.
Described polymer class pour point depressant: tween: the mass ratio of sapn is 8:0.5-1:0.5-1.。Tween, sapn belong to tensio-active agent, polymer class pour point depressant and tween, sapn are adopted such quality proportioning, contributes to the oil soluble improving product, dissemination is formed to wax crystalline substance, make pour point depression after mediation, fall filter and reach best effect, improve the susceptibility of the high diesel oil of wax content.
High-carbon alcohol ester in described poly-α-methacrylic acid high-carbon alcohol ester is the one in lauryl alcohol ester or tetradecyl alcohol ester or hexadecanol ester or octadecyl or behenyl alcohol ester or tetracosanol ester, is preferably the one in hexadecanol ester or octadecyl or behenyl alcohol ester.Like this, can match with the carbon number distribution of paraffinic hydrocarbon in diesel oil, thus improve the susceptibility of pour point depressant to the high diesel oil of paraffinicity.
Described polarity nitrogenous compound is the one in acrylamide or diethylenetriamine or triethylene tetramine.Polarity nitrogenous compound itself can play the effect of dispersing wax crystalline substance, preferably this several polarity nitrogenous compound is as raw material, with α-methacrylic acid high-carbon alcohol ester, vinyl acetate and vinylbenzene at specific material combination, the susceptibility of the finished product diesel pour inhibitor obtained to the high diesel oil of wax content is good, has excellent to fall cold filter clogging temperature performance.
Described solvent is the mixed solvent that toluene and S150 form, and its volume ratio is 1 ~ 2:1.Wherein S150 is solvent oil S150, is commercially available prod, belongs to aromatic hydrocarbons with toluene.Mixed solvent in this proportional range, can widen the temperature range of polyreaction, and polyreaction is more easily carried out; And this mixed solvent has the effect of pour point depression to diesel oil, thus polyreaction complete after without the need to carrying out subsequent disposal.
The pressure of described nitrogen is 0.05-0.2MPa.This reaction is suitable in this pressure range, if pressure is too small, make oxygen in reactive system etc. hinder the material of polyreaction not remove completely, if pressure is excessive, catalyzer or reactive material will be caused to be taken out of reactive system affects extent of reaction and yield.
Described initiator is the mixture of the peroxidation-2-ethyl acid tert-butyl ester and azo-bis-iso-dimethyl, and both mass ratioes are 10:1 ~ 5.Because peroxidation-2-ethyl acid tert-butyl ester reactive behavior is high, play main initiation, azo-bis-iso-dimethyl plays auxiliary initiation, so the ratio azo-bis-iso-dimethyl that in initiator, the peroxidation-2-ethyl acid tert-butyl ester accounts for is many.Such two kinds of initiators synergy initiated polymerization, reaches best initiation effect.
The condition of described polyreaction: polymerization temperature is 60-95 DEG C, polymerization time is 2-8 hour, and wherein polymerization time refers to start to reacting the time terminated Zi dripping raw material.Not only determined by the activity of itself because initiator for reaction is active, also determined by temperature, polymerization temperature is limited within the scope of this, initiator can be made to play best effect.If temperature is too low, cause speed of response slow, if temperature is too high, causes reaction aggravation, easily produce by product.
Described poly-α-methacrylic acid high-carbon alcohol ester: solvent: the mass ratio of initiator is 1:0.8 ~ 2:0.03 ~ 0.08.Based on reaction raw materials, if solvent is too much, then the target product depression effeCt generated is bad, if solvent is very few, then and target product comparatively thickness; If initiator is very few, does not then have and well cause effect, if initiator is too much, then reacts aggravation, easily generate by product.
Described initiator drips at twice, and drips with the mixing raw material liquid be made up of vinyl acetate and vinylbenzene simultaneously, and add-on is 50% ~ 80% of initiator total mass for the first time, and second time add-on is 20% ~ 50% of initiator total mass.
The described mixing raw material liquid be made up of vinyl acetate and vinylbenzene drips at twice, and drips with initiator simultaneously, and add-on is 20% ~ 50% of mixing raw material liquid total mass for the first time, and second time add-on is 50% ~ 80% of mixing raw material liquid total mass.Why initiator drips at twice with the mixing raw material liquid be made up of vinyl acetate and vinylbenzene simultaneously, and first time dropwises reacts 0.5-4 hour again, such polyreaction is carried out under the environment of gentleness, avoids the generation of vigorous reaction under the prerequisite ensureing sufficient reacting.
The synthetic method of diesel pour inhibitor of the present invention; under initiator initiation; using nitrogen as protection gas; poly-α-methacrylic acid high-carbon alcohol ester, polarity nitrogenous compound, vinyl acetate and vinylbenzene is adopted to be raw material; with specific proportioning raw materials; in mixed solvent, there is four-element polymerization reaction, after reactant mixes with tween, sapn, obtain target product diesel pour inhibitor.
Beneficial effect of the present invention has:
(1) adopt poly-α-methacrylic acid high-carbon alcohol ester, polarity nitrogenous compound, vinyl acetate and vinylbenzene to be raw material, one pot process diesel pour inhibitor, without the need to aftertreatment, technique is simple;
(2) adopt synergistic photo initiator initiated polymerization, drip raw material at twice, gentle reaction also sufficient reacting;
(3) reaction conditions is gentle, and polymerization reaction take place in mixed solvent, has widened the scope of temperature of reaction, and reaction is more easily carried out;
(4) adopt specific proportioning raw materials, the susceptibility of the diesel pour inhibitor generated to the high diesel oil of wax content is good, has excellent to fall cold filter clogging temperature performance, significantly improves the low-temperature performance of diesel oil.
Embodiment
embodiment 1
A synthetic method for diesel pour inhibitor, concrete steps comprise:
With in the reactor of whipping appts, add 90mL toluene and 90mL S150 solvent, stir, controlling bath temperature is 95 DEG C, pass into nitrogen, nitrogen pressure is 0.1MPa, adds 200g hexadecanol ester and 100g acrylamide, drip initiator at twice, drip the mixing raw material liquid be made up of vinyl acetate and vinylbenzene simultaneously; Described initiator is made up of the 0.73g peroxidation-2-ethyl acid tert-butyl ester and 0.073g azo-bis-iso-dimethyl, and described mixing raw material liquid is made up of 100g vinyl acetate and 100g vinylbenzene; First time drips 8g initiator, drips the mixing raw material liquid 100g be made up of vinyl acetate and vinylbenzene simultaneously, reacts the mixing raw material liquid dripping remaining initiator and vinyl acetate and vinylbenzene after 0.5 hour and form; Copolymerization 2 hours, obtains polymer class pour point depressant after having reacted;
Take above-mentioned resulting polymers class pour point depressant 0.8g, after mixing with 0.1g tween, 0.1g sapn, obtain target product diesel pour inhibitor.
embodiment 2
A synthetic method for diesel pour inhibitor, concrete steps comprise:
With in the reactor of whipping appts, add 303.0mL toluene and 151.5mL S150 solvent, stir, controlling bath temperature is 60 DEG C, pass into nitrogen, nitrogen pressure is 0.05MPa, adds 200g behenyl alcohol ester and 100g diethylenetriamine, drip initiator at twice, drip the mixing raw material liquid be made up of vinyl acetate and vinylbenzene simultaneously; Described initiator is made up of the 4g peroxidation-2-ethyl acid tert-butyl ester and 2g azo-bis-iso-dimethyl, and described mixing raw material liquid is made up of 100g vinyl acetate and 200g vinylbenzene; First time drips 4.8g initiator, drips the mixing raw material liquid 60g be made up of vinyl acetate and vinylbenzene simultaneously, reacts the mixing raw material liquid dripping remaining initiator and vinyl acetate and vinylbenzene after 2 hours and form; Copolymerization 4 hours, obtains polymer class pour point depressant after having reacted;
Take above-mentioned resulting polymers class pour point depressant 0.8g, after mixing with 0.05g tween, 0.05g sapn, obtain target product diesel pour inhibitor.
embodiment 3
A synthetic method for diesel pour inhibitor, concrete steps comprise:
With in the reactor of whipping appts, add 95.5mL toluene and 63.6mL S150 solvent, stir, controlling bath temperature is 80 DEG C, pass into nitrogen, nitrogen pressure is 0.2MPa, adds 100g octadecyl and 120g triethylene tetramine, drip initiator at twice, drip the mixing raw material liquid be made up of vinyl acetate and vinylbenzene simultaneously; Described initiator is made up of the 3.85g peroxidation-2-ethyl acid tert-butyl ester and 1.15g azo-bis-iso-dimethyl, and described mixing raw material liquid is made up of 120g vinyl acetate and 80g vinylbenzene; First time drips 3.75g initiator, drips the mixing raw material liquid 50g be made up of vinyl acetate and vinylbenzene simultaneously, reacts the mixing raw material liquid dripping remaining initiator and vinyl acetate and vinylbenzene after 4 hours and form; Copolymerization 8 hours, obtains polymer class pour point depressant after having reacted;
Take above-mentioned resulting polymers class pour point depressant 0.8g, after mixing with 0.07g tween, 0.08g sapn, obtain target product diesel pour inhibitor.
embodiment 4
A synthetic method for diesel pour inhibitor, concrete steps comprise:
With in the reactor of whipping appts, add 64.2mL toluene and 49.4mL S150 solvent, stir, controlling bath temperature is 75 DEG C, pass into nitrogen, nitrogen pressure is 0.15MPa, adds 80g octadecyl, 20g hexadecanol ester and 100g triethylene tetramine, drip initiator at twice, drip the mixing raw material liquid be made up of vinyl acetate and vinylbenzene simultaneously; Described initiator is made up of the 3.3g peroxidation-2-ethyl acid tert-butyl ester and 0.7g azo-bis-iso-dimethyl, and described mixing raw material liquid is made up of 100g vinyl acetate and 100g vinylbenzene; First time drips 0.28g initiator, drips the mixing raw material liquid 80g be made up of vinyl acetate and vinylbenzene simultaneously, reacts the mixing raw material liquid dripping remaining initiator and vinyl acetate and vinylbenzene after 3 hours and form; Copolymerization 6 hours, obtains polymer class pour point depressant after having reacted;
Take above-mentioned resulting polymers class pour point depressant 0.8g, after mixing with 0.15g tween, 0.05g sapn, obtain target product diesel pour inhibitor.
experimental example
Above-described embodiment 1-4 products obtained therefrom diesel pour inhibitor is joined in the high diesel oil of wax content, surveys cold filter point of diesel oil according to the method for SH/T0249-92, investigate its depression effeCt, specifically see the following form 1:
The depression effeCt table of table 1 products obtained therefrom diesel pour inhibitor
Get in the 0# ,-10# diesel oil oil sample that commercially available diesel pour inhibitor adds in experimental example, survey cold filter point of diesel oil according to the method for SH/T0249-92, investigate its depression effeCt, specifically see the following form 2:
The depression effeCt table of table 2 market available diesel oil pour point depressant
Adding dosage in table 1 and table 2 is the percentage ratio that pour point depressant accounts for diesel oil oil sample weight; Wherein 0# ,-10# diesel oil oil sample is all purchased in Shandong Chambroad Petrochemicals Co., Ltd.;
Table 1 compares with table 2 can be found out, in the diesel oil oil sample that same wax content is high, add the pour point depressant of same dose, adopt the better effects if of products obtained therefrom diesel pour inhibitor of the present invention, cold filter clogging temperature is lower, significantly improves the low-temperature performance of diesel oil.
Claims (1)
1. the synthetic method of a diesel pour inhibitor, it is characterized in that: in initiator and solvent, with poly-α-methacrylic acid high-carbon alcohol ester, polarity nitrogenous compound, vinyl acetate and vinylbenzene for raw material, one kettle way polyreaction, after reactant mixes with tween, sapn, obtain target product diesel pour inhibitor;
Described poly-α-methacrylic acid high-carbon alcohol ester: polarity nitrogenous compound: vinyl acetate: cinnamic mass ratio is 1:0.5 ~ 2:0.5 ~ 2:0.5 ~ 1;
Concrete steps comprise:
With in the reactor of whipping appts, add solvent, stir, control bath temperature is 60-95 DEG C, pass into nitrogen, add poly-α-methacrylic acid high-carbon alcohol ester and polarity nitrogenous compound, reaction starts to drip initiator for the first time, drip the mixing raw material liquid that part is made up of vinyl acetate and vinylbenzene simultaneously, dropwise after reacting 0.5-4 hour again, second time drips residue initiator, dropping simultaneously remains the mixing raw material liquid be made up of vinyl acetate and vinylbenzene and carries out polyreaction, polymer class pour point depressant is obtained after having reacted, with tween, after sapn mixing, obtain target product diesel pour inhibitor,
Described initiator first time add-on is 50% ~ 80% of initiator total mass, and second time add-on is 20% ~ 50% of initiator total mass;
The described mixing raw material liquid be made up of vinyl acetate and vinylbenzene first time add-on is 20% ~ 50% of mixing raw material liquid total mass, and second time add-on is 50% ~ 80% of mixing raw material liquid total mass;
Described polymer class pour point depressant: tween: the mass ratio of sapn is 8:0.5-1:0.5-1;
High-carbon alcohol ester in described poly-α-methacrylic acid high-carbon alcohol ester is the one in hexadecanol ester or octadecyl or behenyl alcohol ester;
Described polarity nitrogenous compound is the one in acrylamide or diethylenetriamine or triethylene tetramine;
Described solvent is the mixed solvent that toluene and S150 form, and its volume ratio is 1 ~ 2:1;
The pressure of described nitrogen is 0.05-0.2MPa;
Described initiator is the mixture of the peroxidation-2-ethyl acid tert-butyl ester and azo-bis-iso-dimethyl, and both mass ratioes are 10:1-5;
The time of described polyreaction is 2-8 hour;
Described poly-α-methacrylic acid high-carbon alcohol ester: solvent: the mass ratio of initiator is 1:0.8 ~ 2:0.03 ~ 0.08.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075505.XA CN103131487B (en) | 2013-03-11 | 2013-03-11 | Synthesis method of diesel fuel depressant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075505.XA CN103131487B (en) | 2013-03-11 | 2013-03-11 | Synthesis method of diesel fuel depressant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103131487A CN103131487A (en) | 2013-06-05 |
| CN103131487B true CN103131487B (en) | 2015-02-04 |
Family
ID=48491946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310075505.XA Active CN103131487B (en) | 2013-03-11 | 2013-03-11 | Synthesis method of diesel fuel depressant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103131487B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964433A (en) * | 2017-12-12 | 2018-04-27 | 天津大远科技有限公司 | A kind of diesel pour inhibitor and preparation method thereof |
| CN108410443A (en) * | 2018-04-04 | 2018-08-17 | 青岛艾尔乐新材料有限公司 | Efficient thick-oil thinner |
| CN108998121A (en) * | 2018-07-31 | 2018-12-14 | 泰安汉能能源科技有限公司 | Diesel oil synchronous working liquid |
| CN111826222B (en) | 2020-06-02 | 2022-08-19 | 上海应用技术大学 | Nitrogen-containing terpolymer biodiesel pour point depressant and preparation method and application thereof |
| CN114609934B (en) * | 2020-12-07 | 2024-05-28 | 中国石油天然气集团有限公司 | Method and device for determining diesel oil conveying information, computer equipment and storage medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717671A (en) * | 2009-11-24 | 2010-06-02 | 济南开发区星火科学技术研究院 | Diesel oil addictive with dual functions of reducing condensation and viscosity and preparation method |
| CN102153705A (en) * | 2010-12-30 | 2011-08-17 | 吉化集团吉林市星云工贸有限公司 | Method for preparing diesel depressant |
| CN102766491B (en) * | 2012-08-08 | 2015-02-04 | 黄河三角洲京博化工研究院有限公司 | Low-temperature fluidity improver for diesel oil |
-
2013
- 2013-03-11 CN CN201310075505.XA patent/CN103131487B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103131487A (en) | 2013-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103131487B (en) | Synthesis method of diesel fuel depressant | |
| CN101812348B (en) | Diesel pour point depressant | |
| CN102559302B (en) | Diesel pour point depressant and preparation method thereof | |
| CN103642546A (en) | Diesel oil pour-point and viscosity reducer, and preparation method thereof | |
| CN103289760A (en) | Pour point depressant for diesel oil | |
| CN105524211B (en) | A kind of preparation method of quadripolymer diesel pour inhibitor | |
| CN102766491B (en) | Low-temperature fluidity improver for diesel oil | |
| CN108456279A (en) | A kind of pour point depressant for crude oil and the preparation method and application thereof | |
| CN101760264A (en) | Biodiesel lower-temperature fluidity improver and preparation method thereof | |
| CN102911753A (en) | Preparation method of diesel oil pour point depressant | |
| CN106947554A (en) | A kind of flammable nano combined pour-point depressant and preparation method thereof | |
| CN110437900A (en) | A kind of surfactant compound pour-point depressant and its preparation method and application | |
| CN107163997B (en) | A kind of nano combined ter-polymers pour-point depressant and preparation method thereof | |
| CN114369198B (en) | 3-benzoyl ethyl acrylate diesel pour point depressant, diesel pour point depressant composition, preparation and application | |
| CN101665730B (en) | Diesel oil cold filter clogging temperature improving agent and preparation method thereof | |
| CN109337010A (en) | A kind of pour point depressant for crude oil and preparation method thereof | |
| CN111718768B (en) | Polar nitrogen-containing diesel pour point depressant composition and preparation and application thereof | |
| CN102887664B (en) | Polycarboxylic water reducer with strong cement adaptability and good slump retention and synthetic method of polycarboxylic water reducer | |
| CN110527569A (en) | One kind diesel pour inhibitor of Compositional type containing EVA and its preparation and application | |
| CN102634391A (en) | Biodiesel pour point reducer composition as well as preparation method and application thereof | |
| CN113403053A (en) | Oil-soluble thick oil viscosity reducer | |
| CN101935557A (en) | Preparation method of biodiesel with low freezing point | |
| CN106939176B (en) | A kind of polyol class biodiesel pour point reducer composition and preparation method thereof | |
| CN106987289A (en) | A kind of diesel pour inhibitor and its application | |
| CN110564465B (en) | Diesel oil pour point depressant and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200717 Address after: 256500 Boxing Economic Development Zone, Binzhou, Shandong Patentee after: SHANDONG EFIRM BIOCHEMISTRY AND ENVIRONMENTAL PROTECTION Co.,Ltd. Address before: 256500 Boxing Economic Development Zone, Shandong, Binzhou Co-patentee before: SHANDONG CHAMBROAD PETROCHEMICALS Co.,Ltd. Patentee before: CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 256500 Boxing Economic Development Zone, Shandong, Binzhou Patentee after: Yifeng New Material Co.,Ltd. Address before: 256500 Boxing Economic Development Zone, Shandong, Binzhou Patentee before: SHANDONG EFIRM BIOCHEMISTRY AND ENVIRONMENTAL PROTECTION Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230417 Address after: 256500 Boxing Economic Development Zone, Shandong, Binzhou Patentee after: SHANDONG JINGBO ZHONGCHENG CLEAN ENERGY CO.,LTD. Address before: 256500 Boxing Economic Development Zone, Shandong, Binzhou Patentee before: Yifeng New Material Co.,Ltd. |