CN101747885A - 一种高分子量抗盐聚合物驱油剂的制备方法 - Google Patents
一种高分子量抗盐聚合物驱油剂的制备方法 Download PDFInfo
- Publication number
- CN101747885A CN101747885A CN 200810243755 CN200810243755A CN101747885A CN 101747885 A CN101747885 A CN 101747885A CN 200810243755 CN200810243755 CN 200810243755 CN 200810243755 A CN200810243755 A CN 200810243755A CN 101747885 A CN101747885 A CN 101747885A
- Authority
- CN
- China
- Prior art keywords
- molecular weight
- high molecular
- oil displacement
- resistant polymer
- polymer oil
- 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.)
- Granted
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 15
- 150000003839 salts Chemical class 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000007062 hydrolysis Effects 0.000 claims abstract description 21
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 239000007800 oxidant agent Substances 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000012216 screening Methods 0.000 claims abstract description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012986 chain transfer agent Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000008367 deionised water Substances 0.000 claims abstract description 3
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 230000002829 reductive effect Effects 0.000 claims description 12
- 239000003153 chemical reaction reagent Substances 0.000 claims description 10
- 230000003301 hydrolyzing effect Effects 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 9
- FGRJGEWVJCCOJJ-UHFFFAOYSA-N 2,2-dimethylaziridine Chemical compound CC1(C)CN1 FGRJGEWVJCCOJJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- 239000004159 Potassium persulphate Substances 0.000 claims description 7
- 229920000297 Rayon Polymers 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 7
- 235000019394 potassium persulphate Nutrition 0.000 claims description 7
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 6
- 229940045803 cuprous chloride Drugs 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000009818 secondary granulation Methods 0.000 claims description 5
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 4
- NSOXQYCFHDMMGV-UHFFFAOYSA-N Tetrakis(2-hydroxypropyl)ethylenediamine Chemical compound CC(O)CN(CC(C)O)CCN(CC(C)O)CC(C)O NSOXQYCFHDMMGV-UHFFFAOYSA-N 0.000 claims description 4
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 4
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 4
- 239000011790 ferrous sulphate Substances 0.000 claims description 4
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 4
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 claims description 4
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical group [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 4
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical group NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 4
- FKOZPUORKCHONH-UHFFFAOYSA-N 2-methylpropane-1-sulfonic acid Chemical compound CC(C)CS(O)(=O)=O FKOZPUORKCHONH-UHFFFAOYSA-N 0.000 claims description 2
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 229910001379 sodium hypophosphite Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 238000001914 filtration Methods 0.000 abstract description 8
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- 239000002738 chelating agent Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 238000009817 primary granulation Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000011163 secondary particle Substances 0.000 abstract 1
- 239000011734 sodium Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000012266 salt solution Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 150000003926 acrylamides Chemical class 0.000 description 3
- 239000012267 brine Substances 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- -1 sodium hypophosphites Chemical class 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200810243755 CN101747885B (zh) | 2008-12-15 | 2008-12-15 | 一种高分子量抗盐聚合物驱油剂的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200810243755 CN101747885B (zh) | 2008-12-15 | 2008-12-15 | 一种高分子量抗盐聚合物驱油剂的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101747885A true CN101747885A (zh) | 2010-06-23 |
CN101747885B CN101747885B (zh) | 2013-05-15 |
Family
ID=42475514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200810243755 Active CN101747885B (zh) | 2008-12-15 | 2008-12-15 | 一种高分子量抗盐聚合物驱油剂的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101747885B (zh) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103788295A (zh) * | 2012-10-30 | 2014-05-14 | 中国石油化工股份有限公司 | 一种两步法制备丙烯酰胺系共聚物的方法 |
CN103930454A (zh) * | 2011-11-11 | 2014-07-16 | 罗门哈斯公司 | 不饱和羧酸的小粒度次磷酸盐/酯调聚物 |
CN104017131A (zh) * | 2014-05-30 | 2014-09-03 | 北京石大万嘉新材料科技有限公司 | 聚合物微凝胶驱油剂及其制备方法和应用 |
CN104387527A (zh) * | 2014-11-07 | 2015-03-04 | 安徽天润化学工业股份有限公司 | 一种抗温抗盐聚丙烯酰胺的制备方法 |
CN106715640A (zh) * | 2014-07-29 | 2017-05-24 | 艺康美国股份有限公司 | 用于原油回收的聚合物乳液 |
CN109705264A (zh) * | 2018-12-04 | 2019-05-03 | 山东水衡化工有限责任公司 | 一种驱油用耐温抗盐聚丙烯酰胺的制备方法 |
CN110776595A (zh) * | 2019-10-17 | 2020-02-11 | 中国石油天然气股份有限公司 | 一种驱油用线性抗盐聚合物及其制备方法 |
CN112321764A (zh) * | 2021-01-04 | 2021-02-05 | 东营聚星石油科技有限公司 | 耐温抗盐粘弹性颗粒驱油剂及其制备方法和应用 |
CN113201103A (zh) * | 2021-05-14 | 2021-08-03 | 厦门大学 | 一种驱油用粘度调节剂及其制备方法 |
US11136425B2 (en) | 2013-01-31 | 2021-10-05 | Championx Usa Inc. | Mobility control polymers for enhanced oil recovery |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7157409B2 (en) * | 2002-09-25 | 2007-01-02 | M-I Llc | Surfactant-polymer compositions for enhancing the stability of viscoelastic-surfactant based fluid |
CN100434447C (zh) * | 2005-09-09 | 2008-11-19 | 中国科学院理化技术研究所 | 纳微米水溶性微凝胶驱油材料及其制备方法 |
US9034802B2 (en) * | 2006-08-17 | 2015-05-19 | Schlumberger Technology Corporation | Friction reduction fluids |
CN100595257C (zh) * | 2006-12-29 | 2010-03-24 | 中国科学院长春应用化学研究所 | 一种接枝型压裂液及制备方法 |
-
2008
- 2008-12-15 CN CN 200810243755 patent/CN101747885B/zh active Active
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103930454B (zh) * | 2011-11-11 | 2017-05-24 | 罗门哈斯公司 | 不饱和羧酸的小粒度次磷酸盐/酯调聚物 |
CN103930454A (zh) * | 2011-11-11 | 2014-07-16 | 罗门哈斯公司 | 不饱和羧酸的小粒度次磷酸盐/酯调聚物 |
CN103788295B (zh) * | 2012-10-30 | 2016-08-17 | 中国石油化工股份有限公司 | 一种两步法制备丙烯酰胺系共聚物的方法 |
CN103788295A (zh) * | 2012-10-30 | 2014-05-14 | 中国石油化工股份有限公司 | 一种两步法制备丙烯酰胺系共聚物的方法 |
US11136425B2 (en) | 2013-01-31 | 2021-10-05 | Championx Usa Inc. | Mobility control polymers for enhanced oil recovery |
CN104017131A (zh) * | 2014-05-30 | 2014-09-03 | 北京石大万嘉新材料科技有限公司 | 聚合物微凝胶驱油剂及其制备方法和应用 |
US11118099B2 (en) | 2014-07-29 | 2021-09-14 | Championx Usa Inc. | Polymer emulsions for use in crude oil recovery |
CN106715640B (zh) * | 2014-07-29 | 2020-04-21 | 艺康美国股份有限公司 | 用于原油回收的聚合物乳液 |
CN106715640A (zh) * | 2014-07-29 | 2017-05-24 | 艺康美国股份有限公司 | 用于原油回收的聚合物乳液 |
CN104387527A (zh) * | 2014-11-07 | 2015-03-04 | 安徽天润化学工业股份有限公司 | 一种抗温抗盐聚丙烯酰胺的制备方法 |
CN109705264A (zh) * | 2018-12-04 | 2019-05-03 | 山东水衡化工有限责任公司 | 一种驱油用耐温抗盐聚丙烯酰胺的制备方法 |
CN110776595A (zh) * | 2019-10-17 | 2020-02-11 | 中国石油天然气股份有限公司 | 一种驱油用线性抗盐聚合物及其制备方法 |
CN110776595B (zh) * | 2019-10-17 | 2021-09-21 | 中国石油天然气股份有限公司 | 一种驱油用线性抗盐聚合物及其制备方法 |
CN112321764A (zh) * | 2021-01-04 | 2021-02-05 | 东营聚星石油科技有限公司 | 耐温抗盐粘弹性颗粒驱油剂及其制备方法和应用 |
CN113201103A (zh) * | 2021-05-14 | 2021-08-03 | 厦门大学 | 一种驱油用粘度调节剂及其制备方法 |
CN113201103B (zh) * | 2021-05-14 | 2022-05-27 | 厦门大学 | 一种驱油用粘度调节剂及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101747885B (zh) | 2013-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101747885B (zh) | 一种高分子量抗盐聚合物驱油剂的制备方法 | |
CN101735387B (zh) | 一种阴离子聚丙烯酰胺的制备方法 | |
CN102060965B (zh) | 提高耐温抗盐性能的部分水解聚丙烯酰胺的制备方法 | |
CN100575462C (zh) | 速溶型水煤浆粉的生产方法 | |
CN102286134A (zh) | 一种高性能减水剂的制备方法 | |
CN101735376B (zh) | 一种赤泥沉降剂的制备方法 | |
CN102936308A (zh) | 一种溶液法合成氯醋树脂的方法 | |
CN101747472A (zh) | 一种高分子量速溶阳离子絮凝剂的制备方法 | |
CN102649828A (zh) | 一种超高水解度聚丙烯酰胺的制备方法 | |
US11787888B2 (en) | Acrylamide copolymer and preparation method therefor and use thereof | |
CN104448135B (zh) | 一种油田用耐温抗盐聚丙烯酰胺制备方法 | |
CN104788674A (zh) | 一种离子液体-聚醚混合液为催化剂和反应介质的聚天冬氨酸制备方法 | |
CN102746834A (zh) | 一种聚合物降滤失剂及其制备方法 | |
CN1084339C (zh) | 高分子量阴离子聚丙烯酰胺制备方法 | |
CN1022417C (zh) | 速溶阴离子型聚丙烯酰胺制备 | |
CN103864987B (zh) | 一种部分水解的丙烯酰胺聚合物及其制备方法和应用 | |
CN101696251A (zh) | 一种超高分子量水解聚丙烯酰胺及其制备方法 | |
CN101735385B (zh) | 一种水分散阴离子聚丙烯酰胺的制备方法 | |
CN102558436B (zh) | 一种用于污水处理的阳离子型处理剂的制备 | |
CN108048064A (zh) | 一种长效水基防蜡剂的制备方法 | |
CN111139039A (zh) | 一种磺化酚醛树脂接枝改性聚合物降滤失剂及其制备方法 | |
CN110194816B (zh) | 一种抗盐减阻剂聚合物及合成工艺 | |
CN103102459B (zh) | 一种明胶接枝丙烯酰胺阳离子高分子絮凝剂的制备方法 | |
CN102336867A (zh) | 一种钻井液用增粘剂的制备方法 | |
CN114437487B (zh) | 速溶型聚丙烯酰胺组合物及其制备方法与应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
ASS | Succession or assignment of patent right |
Owner name: ANHUI TIANRUN CHEMICAL INDUSTRY CO., LTD. Free format text: FORMER OWNER: ANHUI TIANRUN FUNCTIONAL POLYMER ENGINEERING RESEARCH CO., LTD. Effective date: 20130326 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20130326 Address after: 233010 No. 71, Jianghuai Road, Bengbu, Anhui Applicant after: Anhui Tianrun Chemicals Co., Ltd. Address before: 233010 Anhui city of Bengbu province Jianghuai Yuhui District Road No. 71 Applicant before: Anhui Tianrun Functional Polymers Engineering Co., Ltd. |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method for preparing high molecular weight salt-resistant polymer oil displacement agents Effective date of registration: 20180102 Granted publication date: 20130515 Pledgee: Bengbu financing guarantee Group Co., Ltd. Pledgor: Anhui Tianrun Chemicals Co., Ltd. Registration number: 2017340000508 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180821 Granted publication date: 20130515 Pledgee: Bengbu financing guarantee Group Co., Ltd. Pledgor: Anhui Tianrun Chemicals Co., Ltd. Registration number: 2017340000508 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method for preparing high molecular weight salt-resistant polymer oil displacement agents Effective date of registration: 20180831 Granted publication date: 20130515 Pledgee: CITIC Bank Limited by Share Ltd Bengbu branch Pledgor: Anhui Tianrun Chemicals Co., Ltd. Registration number: 2018340000449 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191106 Granted publication date: 20130515 Pledgee: CITIC Bank Limited by Share Ltd Bengbu branch Pledgor: Anhui Tianrun Chemicals Co., Ltd. Registration number: 2018340000449 |
|
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method for preparing high molecular weight salt-resistant polymer oil displacement agents Effective date of registration: 20191108 Granted publication date: 20130515 Pledgee: CITIC Bank Limited by Share Ltd Bengbu branch Pledgor: Anhui Tianrun Chemicals Co., Ltd. Registration number: Y2019340000181 |
|
PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201021 Granted publication date: 20130515 Pledgee: CITIC Bank Limited by Share Ltd. Bengbu branch Pledgor: ANHUI TIANRUN CHEMICALS Co.,Ltd. Registration number: Y2019340000181 |