CN105175643B - A kind of elasticity blocks the preparation method of polymer beads - Google Patents
A kind of elasticity blocks the preparation method of polymer beads Download PDFInfo
- Publication number
- CN105175643B CN105175643B CN201510551498.5A CN201510551498A CN105175643B CN 105175643 B CN105175643 B CN 105175643B CN 201510551498 A CN201510551498 A CN 201510551498A CN 105175643 B CN105175643 B CN 105175643B
- Authority
- CN
- China
- Prior art keywords
- polymer beads
- elasticity
- blocks
- preparation
- stalk
- 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
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The present invention relates to the preparation methods that a kind of elasticity blocks polymer beads.The production method that the elasticity blocks polymer beads is to make proppant by using stalk oxidation catalysis product, and introducing polyoxyethylene ether under inorganic salts crosslinking agent and organic crosslinking agent with function monomer or mixture is polymerized.The flexible polymer composition granule is in space net structure, the performance high with intensity with high salt, high-temperature stability is good.Profile control and water plugging especially suitable for oil field high temperature and high salinity Complex Reservoir.
Description
Technical field
The present invention relates to a kind of preparation methods of plugging material in oilfield development process field, and in particular to a kind of elasticity
Block the preparation method of polymer beads.
Background technology
Most domestic oil field has been enter into the exploitation later stage, and the block of oil recovery condition harshness need to be developed largely, high temperature high mineralization
It is increasing to spend oil well, higher technology requirement is proposed to regulating section of oil wells water blockoff.General water shutoff agent high salt tolerance alkaline resistance properties
Force difference, under hot conditions, requirement is not achieved in the stability of water shutoff agent.
The present invention makes cellulose and lignin in stalk decompose by aoxidizing stalk, the oxidation fulvic acid produced, low point
The water-soluble products such as sub- sugar, amino acid can be used as skeletal support agent, and stalk oxidative degradation products have resistance to hard water and chelating
The strong feature of ability, while polyoxyethylene ether is introduced to improve high salt tolerance performance.
Invention content
Technical problem to be solved by the invention is to provide a kind of oxidation agricultural straws to prepare elasticity closure polymer beads
Method.
In order to solve the above technical problems, the technical scheme is that:A kind of elasticity blocks the preparation side of polymer beads
Method includes the following steps:
(1) by clean stalk drying, crushing, a diameter of 0.1-0.5 centimetres of stalk crushed material is obtained；
(2) stalk crushed material, swelling agent, oxidant and deionized water, control temperature 100-120 are added into reaction kettle
DEG C, it reacts 1-2 hours, obtains catabolite；
(3) catabolite in step (2) is kept the temperature into aging 2-4 hours under the conditions of 30-40 DEG C；
(4) catabolite in step (3) is separated by filtration, obtains solid filter residue and stalk oxidation solution；
(5) it by function monomer or mixture, after deionized water mixing is added, injects in polymeric kettle；
Wherein function monomer or mixture include basic components or acrylonitrile, maleic acid, itaconic acid, N, N- dimethyl propylenes
The mixture of more than one substances and basic components in acrylamide, basic components contain at least one in acrylamide and acrylic acid
Kind；
(6) the stalk oxidation solution in step (4) is added in the polymeric kettle of step (5), potassium carbonate is added, it is fully mixed
It closes；
(7) in the mixed liquor into step (6), inorganic salts crosslinking agent and organic crosslinking agent is added, adds polyoxyethylene
Ether and organic silicone oil are uniformly mixed, and it is 30-60 DEG C to control the polymeric kettle temperature, is passed through carbon dioxide gas 25-35 minutes,
Initiator is added, logical carbon dioxide gas to system becomes viscous, and stops leading to carbon dioxide gas, become with bullet after 1-2 hours
The polymeric colloid of property；
(8) polymeric colloid be granulated, dried, crushing obtains elasticity and blocks polymer beads.
Swelling agent is KOH, K as a preferred technical solution,2CO3With the mixture of octadecylamine, stalk crushed material, KOH,
K2CO3It is 100 with octadecylamine weight part ratio:(5-10):(8-12):(3-5).
The mixture that oxidant is thiourea dioxide as a preferred technical solution, hydrogen peroxide, potassium peroxydisulfate form, two
Aminoiminomethanesulfonic acid, hydrogen peroxide, potassium peroxydisulfate weight part ratio be 65: 22 : 13:, the parts by weight of stalk crushed material and oxidant
Than 100:(1.5-3.0).
The weight part ratio 100 of stalk crushed material and step (2) deionized water as a preferred technical solution,:(80-
100)。
Potassium carbonate parts by weight in function monomer or mixture, stalk oxidation solution and step (6) as a preferred technical solution,
Than being 500:(200-300):(45-55).
Function monomer or mixture and the weight part ratio of deionized water in step (5) are as a preferred technical solution,
(250-300):1000。
As a preferred technical solution, polyoxyethylene ether be cetyl polyoxyethylene ether, Steareth,
One kind in nonylphenol polyoxyethylene ether.
Inorganic crosslinking agent is crystal aluminum chloride, addition and mixed liquor in step (6) as a preferred technical solution,
Weight ratio is (0.1-0.25):100；Organic crosslinking agent is N, N- methylene-bisacrylamides, is mixed in addition and step (6)
The weight ratio of liquid is (0.05-0.06):100；The addition of polyoxyethylene ether and the weight ratio of mixed liquor in step (6) are 0.3:
100；The addition of the organic silicone oil and the weight ratio of mixed liquor in step (6) are 0.2:100.
The initiator is potassium peroxydisulfate and sodium pyrosulfite, the addition of potassium peroxydisulfate as a preferred technical solution,
Weight ratio with mixed liquor in sodium pyrosulfite addition and step (6) is 0.0075:0.0075:100, potassium peroxydisulfate is sub- with coke
Sodium sulphate sequentially adds.
As a preferred technical solution, wet granulation is used using by polymeric colloid.
As further preferred technical solution, wet granulation is carried out using single screw rod thrust type comminutor.
As a preferred technical solution, through being granulated obtained polymer beads, the polymer beads aperture is 3-4mm,
Tapered structure.
As a preferred technical solution, in step (8), dried using crawler belt fluidization drying machine, drying temperature is
70-110℃。
Specific implementation mode
Embodiment 1
By 5kg KOH, 12kg K2CO3Reaction kettle is added, 17 kg deionized waters, stirring and dissolving is added.By 100kg stalks
It crushes and is added in reaction kettle for the little particle of 0.1-0.5 centimetres of diameter, be sufficiently mixed, add 3 kg octadecylamines, fill into 63 kg
1.625 kg thiourea dioxides, 0.55kg hydrogen peroxide, 0.325kg potassium peroxydisulfates is added in deionized water, is uniformly mixed.105
It is reacted 2 hours at DEG C, obtains catabolite.By catabolite, aging 4 hours, blowing obtain stalk through filtering under the conditions of 40 DEG C
Oxidation solution and part filter residue.
175 kg of acrylamide, 39 kg of acrylic acid, 26 kg of N,N-DMAA are weighed, 20 kg of maleic acid is gone
920 kg of ionized water fully dissolves, and K is added2CO325 kg are added 150 kg of stalk oxidation solution, crystal aluminum chloride 1.4 are added
Kg, N, N- methylene bisacrylamide acyl 0.6775 kg, cetyl polyoxyethylene ether 4.065kg, organic silicone oil 2.71kg.By body
After system is sufficiently mixed, 40 DEG C of controlling reaction temperature leads to CO230 min of gas sequentially adds potassium peroxydisulfate 101.6g, burnt sulfurous
Sour sodium 101.6g is uniformly mixed, and when system becomes viscous, stopping is passed through CO2Gas becomes flexible poly- after 2 hours
Close object colloid.Through single screw rod thrust type comminutor carry out wet granulation, obtain aperture be 3-4 mm polymer beads, using
Crawler belt fluidization drying machine dries 30 min, crushing obtains elasticity and blocks polymer beads.
Embodiment 2
By 8 kg KOH, 10 kg K2CO3Reaction kettle is added, 21 kg deionized waters, stirring and dissolving is added.By 100kg straw
Stalk crushes is added reaction kettle for the little particle of 0.1-0.5 centimetres of diameter, is sufficiently mixed, adds 5 kg octadecylamines, fill into 60 kg
1.69 kg thiourea dioxides, 0.57kg hydrogen peroxide, 0.338 kg potassium peroxydisulfates is added in deionized water, is uniformly mixed.
It is reacted 2 hours at 100 DEG C, obtains catabolite.By catabolite, aging 4 hours, blowing obtain straw through filtering under the conditions of 40 DEG C
Stalk oxidation solution and part filter residue.
195 kg of acrylamide, 35 kg of acrylic acid, 20 kg of itaconic acid are weighed, 900 kg of deionized water fully dissolves, adds
Enter K2CO3150 kg of stalk oxidation solution is added in 24kg, and crystal aluminum chloride 2.648 kg, N, N- methylene-bisacrylamides is added
0.72kg, Steareth 3.9 kg, organic silicone oil 2.64kg.After system is sufficiently mixed, controlling reaction temperature
50 DEG C, lead to CO235 min of gas sequentially adds potassium peroxydisulfate 99g, sodium pyrosulfite 99g, is uniformly mixed, when system becomes viscous,
Stopping is passed through CO2Gas becomes flexible polymeric colloid after 2 hours.It is carried out through single screw rod thrust type comminutor
Wet granulation obtains aperture and dries 30 min for the polymer beads of 3-4 mm, using crawler belt fluidization drying machine, crushes
It obtains elasticity and blocks polymer beads.
Embodiment 3
By 8 kgKOH, 11 kgK2CO3Reaction kettle is added, 22 kg deionized waters, stirring and dissolving is added.By 100kg stalks
It crushes and reaction kettle is added for a diameter of 0.1-0.5 centimetres of little particle, be sufficiently mixed, add 4 kg octadecylamines, fill into 58 kg
The oxidant being made of 1.69 kg thiourea dioxides, 0.57kg hydrogen peroxide, 0.325 kg potassium peroxydisulfates is added in deionized water
2.6 kg of mixture is uniformly mixed.It is reacted 1.5 hours at 110 DEG C, obtains catabolite.By catabolite in 40 DEG C of conditions
Lower aging 3.5 hours, blowing obtain stalk oxidation solution and part filter residue through filtering.
250 kg of acrylamide is weighed, 900 kg of deionized water fully dissolves, and K is added2CO3Stalk oxidation is added in 27 kg
Crystal aluminum chloride 3.3 kg, N, 0.79 kg of N- methylene-bisacrylamides, nonylphenol polyoxyethylene ether is added in 150 kg of liquid
3.98 kg, organic silicone oil 2.65kg.After system is sufficiently mixed, 60 DEG C of controlling reaction temperature leads to CO230 min of gas, successively
Potassium peroxydisulfate 99.5g, sodium pyrosulfite 99.5g is added, is uniformly mixed, when system becomes viscous, stopping is passed through CO2Gas, by 2
Become flexible polymeric colloid after hour.Wet granulation is carried out through single screw rod thrust type comminutor, it is 3-4 to obtain aperture
The polymer beads of mm obtain elasticity and block polymer beads using 30 min of crawler belt fluidization drying machine drying, crushing.
Embodiment 4
By 7kg KOH, 10kg K2CO3Reaction kettle is added, 20 kg deionized waters, stirring and dissolving is added.By 100kg stalks
It crushes and is added in reaction kettle for the little particle of 0.1-0.5 centimetres of diameter, be sufficiently mixed, add 4kg octadecylamines, fill into 65 kg
1.625kg thiourea dioxides, 0.55kg hydrogen peroxide, 0.325 kg potassium peroxydisulfates is added in deionized water, is uniformly mixed.105
It is reacted 2 hours at DEG C, obtains catabolite.By catabolite, aging 4 hours, blowing obtain stalk through filtering under the conditions of 40 DEG C
Oxidation solution and part filter residue.
180 kg of acrylic acid is weighed, 36 kg of N,N-DMAA, itaconic acid 34kg, 920 kg of deionized water fill
Divide dissolving, K is added2CO3150 kg of stalk oxidation solution is added in 26 kg, and crystal aluminum chloride 3.36 kg, N, N- methylene is added
Bisacrylamide 0.81kg, octadecyl polyoxyethylene 4.04 kg, organic silicone oil 2.69kg.After system is sufficiently mixed, control
40 DEG C of reaction temperature leads to CO230 min of gas sequentially adds potassium peroxydisulfate 101g, sodium pyrosulfite 101g, is uniformly mixed, body
When system becomes viscous, stopping is passed through CO2Gas becomes flexible polymeric colloid after 2 hours.Through single screw rod thrust type
Comminutor carries out wet granulation, obtains aperture and dries 30 for the polymer beads of 3-4 mm, using crawler belt fluidization drying machine
Min, crushing obtain elasticity and block polymer beads.
Embodiment 5
By 8kg KOH, 11kg K2CO3Reaction kettle is added, 21kg deionized waters, stirring and dissolving is added.By 100kg straw powders
The broken little particle for 0.1-0.5 centimetres of diameter is added in reaction kettle, is sufficiently mixed, adds 5kg octadecylamines, fills into 80 kg and go
1.95kg thiourea dioxides, 0.66kg hydrogen peroxide, 0.39 kg potassium peroxydisulfates is added in ionized water, is uniformly mixed.At 105 DEG C
Reaction 2 hours, obtains catabolite.By catabolite, aging 4 hours, blowing obtain stalk oxidation through filtering under the conditions of 40 DEG C
Liquid and part filter residue.
Acrylamide 170, itaconic acid 90kg are weighed, 930 kg of deionized water fully dissolves, and K is added2CO326 kg are added
Crystal aluminum chloride 2.73 kg, N, 0.75 kg of N- methylene-bisacrylamides, cetyl is added in 150 kg of stalk oxidation solution
Polyoxyethylene ether 4.09 kg, organic silicone oil 2.73kg.After system is sufficiently mixed, 40 DEG C of controlling reaction temperature leads to CO2Gas
30 min sequentially add potassium peroxydisulfate 102.5g, sodium pyrosulfite 102.5g, are uniformly mixed, when system becomes viscous, stop being passed through
CO2Gas becomes flexible polymeric colloid after 2 hours.Wet granulation is carried out through single screw rod thrust type comminutor,
It obtains aperture and obtains elastic envelope for the polymer beads of 3-4 mm, using 30 min of crawler belt fluidization drying machine drying, crushing
Stifled polymer beads.
The basic principles and main features and advantages of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of elasticity blocks the preparation method of polymer beads, include the following steps:
(1) by clean stalk drying, crushing, a diameter of 0.1-0.5 centimetres of stalk crushed material is obtained；
(2) stalk crushed material, swelling agent, oxidant and deionized water are added into reaction kettle, controls 100-120 DEG C of temperature, instead
It answers 1-2 hours, obtains catabolite；
(3) catabolite in step (2) is kept the temperature into aging 2-4 hours under the conditions of 30-40 DEG C；
(4) catabolite in step (3) is separated by filtration, obtains solid filter residue and stalk oxidation solution；
(5) it by function monomer or mixture, after deionized water mixing is added, injects in polymeric kettle；
The wherein described function monomer or mixture include basic components or acrylonitrile, maleic acid, itaconic acid, N, N- dimethyl propylenes
The mixture of more than one substances and basic components in acrylamide, the basic components contain in acrylamide and acrylic acid extremely
Few one kind；
(6) the stalk oxidation solution in step (4) is added in the polymeric kettle of step (5), potassium carbonate is added, is sufficiently mixed；
(7) in the mixed liquor into step (6), inorganic salts crosslinking agent and organic crosslinking agent is added, add polyoxyethylene ether and
Organic silicone oil is uniformly mixed, and it is 30-60 DEG C to control the polymeric kettle temperature, is passed through carbon dioxide gas 25-35 minutes, is added
Initiator, logical carbon dioxide gas to system become viscous, and stopping is passed through carbon dioxide gas, by 1-2 hours, becomes with bullet
The polymeric colloid of property；
(8) polymeric colloid be granulated, dried, crushing obtains elasticity and blocks polymer beads.
2. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:Swelling agent is
KOH、K2CO3With the mixture of octadecylamine, stalk crushed material, KOH, K2CO3It is 100 with octadecylamine weight part ratio:(5-10):(8-
12):(3-5)。
3. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:The oxidant
For thiourea dioxide, hydrogen peroxide, potassium peroxydisulfate composition mixture, thiourea dioxide, hydrogen peroxide, potassium peroxydisulfate weight part ratio
It is 65:22:13, the weight part ratio of stalk crushed material and oxidant is 100:(1.5-3.0).
4. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:Stalk crushed material
With the weight part ratio 100 of deionized water in step (2):(80-100).
5. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:Function monomer or
Potassium carbonate weight part ratio is 500 in mixture, stalk oxidation solution and step (6):(200-300):(45-55), function monomer or
Mixture and the weight part ratio of deionized water in step (5) are (250-300):1000.
6. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:Polyoxyethylene ether
For one kind in cetyl polyoxyethylene ether, Steareth or nonylphenol polyoxyethylene ether.
7. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:The inorganic friendship
Connection agent is crystal aluminum chloride, and the weight ratio of mixed liquor is (0.1-0.25) in addition and step (6):100；Organic crosslinking agent
For N, the weight ratio of N- methylene-bisacrylamides, addition and mixed liquor in step (6) is (0.05-0.06):100；It is described
The addition of polyoxyethylene ether and the weight ratio of mixed liquor in step (6) are 0.3:100；The addition and step of the organic silicone oil
Suddenly the weight ratio of mixed liquor is 0.2 in (6):100.
8. a kind of elasticity as described in claim 1 blocks the preparation method of polymer beads, it is characterised in that:The initiator
For potassium peroxydisulfate and sodium pyrosulfite, the addition of potassium peroxydisulfate, the addition of sodium pyrosulfite and mixed liquor in step (6)
Weight ratio is 0.0075:0.0075:100.
9. a kind of elasticity as claimed in claim 8 blocks the preparation method of polymer beads, it is characterised in that:It is obtained through being granulated
Polymer beads, the polymer beads grain size be 3-4mm, tapered structure.
10. a kind of elasticity according to claim 1 blocks the preparation method of polymer beads, it is characterised in that:Step (8)
In, it is dried using fluidization drying machine, drying temperature is 70-110 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510551498.5A CN105175643B (en) | 2015-09-02 | 2015-09-02 | A kind of elasticity blocks the preparation method of polymer beads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510551498.5A CN105175643B (en) | 2015-09-02 | 2015-09-02 | A kind of elasticity blocks the preparation method of polymer beads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105175643A CN105175643A (en) | 2015-12-23 |
| CN105175643B true CN105175643B (en) | 2018-09-25 |
Family
ID=54898133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510551498.5A Active CN105175643B (en) | 2015-09-02 | 2015-09-02 | A kind of elasticity blocks the preparation method of polymer beads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105175643B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106589257A (en) * | 2016-12-09 | 2017-04-26 | 孙安顺 | Preparation method of lignin grafted and copolymerized polymer flocculation type profile modifying/water plugging agent |
| CN113122212B (en) * | 2020-01-13 | 2022-10-04 | 中国石油天然气股份有限公司 | Preparation method and application of profile control agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532416A (en) * | 2010-12-31 | 2012-07-04 | 莱芜市涌金化工有限公司 | Method for preparing soil water retention modifier by oxidizing and grafting straws |
| CN102911647A (en) * | 2012-10-30 | 2013-02-06 | 中国石油化工股份有限公司 | Temporary plugging agent for drilling fluid and preparation method of temporary plugging agent |
-
2015
- 2015-09-02 CN CN201510551498.5A patent/CN105175643B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532416A (en) * | 2010-12-31 | 2012-07-04 | 莱芜市涌金化工有限公司 | Method for preparing soil water retention modifier by oxidizing and grafting straws |
| CN102911647A (en) * | 2012-10-30 | 2013-02-06 | 中国石油化工股份有限公司 | Temporary plugging agent for drilling fluid and preparation method of temporary plugging agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105175643A (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106366203B (en) | A kind of preparation method of Cardia Salt carboxymethyl cellulose lithium | |
| CN101837958B (en) | Preparation method of high temperature stability insoluble sulfur | |
| CN105175643B (en) | A kind of elasticity blocks the preparation method of polymer beads | |
| CN106317315A (en) | Plugging agent for oil reservoir fracture plugging | |
| CN105566560B (en) | A kind of structure directing type composite initiator system and acrylamide polymer and its preparation method and application | |
| CN105197926A (en) | Method for preparing activated carbon with enzymatic hydrolysis lignin as raw material | |
| CN104401952A (en) | Preparation method for sectional synthesis of crystal II type ammonium polyphosphate | |
| CN104109301B (en) | A kind of double orientation polyvinyl chloride tube material and preparation method thereof | |
| CN109705264A (en) | A kind of preparation method of displacement of reservoir oil temperature-tolerant anti-salt polyacrylamide | |
| CN105062446A (en) | Granular profile control water-plugging agent | |
| CN104725580A (en) | Dolomite ore composite water absorbent and preparation method thereof | |
| CN108841114A (en) | A kind of novel environment friendly Wood-plastic material and preparation method thereof | |
| CN103772558A (en) | Preparation method of low-viscosity hydrolyzed polyacrylonitrile sodium salt filtrate reducer | |
| CN101280077A (en) | Regenerative vulcanized butadiene nitrile rubber and preparation thereof | |
| CN1333036C (en) | Pre-crosslinked granular plugging agent and its production | |
| CN104231156A (en) | Clean fracturing fluid thickening agent and preparation method thereof | |
| CN104448145A (en) | Preparation method of super absorbent resin | |
| CN101191002A (en) | MBS resin composition with excellent impact property | |
| CN103601850A (en) | Preparation method of super absorbent resin | |
| CN105482799B (en) | It is a kind of temporarily to block up diversion agent and preparation method thereof from degradation hydraulic fracturing | |
| CN105968594A (en) | Weather-resistant water-swelling waterproof rubber sealing material and preparation method thereof | |
| CN101423588A (en) | Industrial synthesis method for producing high water absorption resin | |
| CN106543367A (en) | Drilling fluid macromolecule salt-resisting high-temperature-resisting fluid loss additive and preparation method thereof | |
| CN106882826A (en) | A kind of preparation method of flame retardant of magnesium hydroxide | |
| CN105879845A (en) | Preparation method of heavy metal absorbent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200529 Address after: 163000 No. 9 Sanan Road, Sartu District, Daqing City, Heilongjiang Province Patentee after: Daqing Osbesen Chemical Technology Co.,Ltd. Address before: 271100 No. 168 West Longtan Avenue, Shandong, Laiwu Patentee before: LAIWU YONGJIN CHEMICAL Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210914 Address after: 152000 Wang Da Bao Tun, Juxing village, jixinggang Town, Anda City, Suihua City, Heilongjiang Province (400m south of the village committee) Patentee after: Heilongjiang Anyou Chemical Co.,Ltd. Address before: 163000 No. 9 Sanan Road, Sartu District, Daqing City, Heilongjiang Province Patentee before: Daqing Osbesen Chemical Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221117 Address after: 163000 No. 9 Sanan Road, Sartu District, Daqing City, Heilongjiang Province Patentee after: Daqing Osbesen Chemical Technology Co.,Ltd. Address before: 152000 Wang Da Bao Tun, Juxing village, jixinggang Town, Anda City, Suihua City, Heilongjiang Province (400m south of the village committee) Patentee before: Heilongjiang Anyou Chemical Co.,Ltd. |
|
| TR01 | Transfer of patent right |