CN117777315A - Tackifying and cutting biopolymer and preparation method thereof - Google Patents
Tackifying and cutting biopolymer and preparation method thereof Download PDFInfo
- Publication number
- CN117777315A CN117777315A CN202311862263.9A CN202311862263A CN117777315A CN 117777315 A CN117777315 A CN 117777315A CN 202311862263 A CN202311862263 A CN 202311862263A CN 117777315 A CN117777315 A CN 117777315A
- Authority
- CN
- China
- Prior art keywords
- biopolymer
- ethanol
- cutting
- tackifying
- heating
- 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
- 229920001222 biopolymer Polymers 0.000 title claims abstract description 36
- 238000005520 cutting process Methods 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 72
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 69
- 229920002907 Guar gum Polymers 0.000 claims abstract description 31
- 239000000665 guar gum Substances 0.000 claims abstract description 31
- 229960002154 guar gum Drugs 0.000 claims abstract description 31
- 235000010417 guar gum Nutrition 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000012153 distilled water Substances 0.000 claims abstract description 26
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- NPDQLMCROPIYGG-UHFFFAOYSA-N 9,14-diazapentacyclo[11.7.0.02,10.03,8.015,20]icosa-1,3,5,7,9,11,13,15,17,19-decaene Chemical compound C1=CC=C2C3=C4C5=CC=CC=C5N=C4C=CC3=NC2=C1 NPDQLMCROPIYGG-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000010992 reflux Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 7
- GKIPXFAANLTWBM-UHFFFAOYSA-N epibromohydrin Chemical compound BrCC1CO1 GKIPXFAANLTWBM-UHFFFAOYSA-N 0.000 claims description 5
- 244000303965 Cyamopsis psoralioides Species 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 230000008719 thickening Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000010008 shearing Methods 0.000 abstract description 8
- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000012467 final product Substances 0.000 abstract 1
- 238000000643 oven drying Methods 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 9
- 230000014759 maintenance of location Effects 0.000 description 6
- 244000007835 Cyamopsis tetragonoloba Species 0.000 description 5
- 229920000926 Galactomannan Polymers 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OMDQUFIYNPYJFM-XKDAHURESA-N (2r,3r,4s,5r,6s)-2-(hydroxymethyl)-6-[[(2r,3s,4r,5s,6r)-4,5,6-trihydroxy-3-[(2s,3s,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1OC[C@@H]1[C@@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)[C@H](O)[C@H](O)[C@H](O)O1 OMDQUFIYNPYJFM-XKDAHURESA-N 0.000 description 2
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229960003082 galactose Drugs 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 229920002558 Curdlan Polymers 0.000 description 1
- 239000001879 Curdlan Substances 0.000 description 1
- 229920002581 Glucomannan Polymers 0.000 description 1
- 229920000057 Mannan Polymers 0.000 description 1
- 229920001938 Vegetable gum Polymers 0.000 description 1
- GZCGUPFRVQAUEE-UHFFFAOYSA-N alpha-D-galactose Natural products OCC(O)C(O)C(O)C(O)C=O GZCGUPFRVQAUEE-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-UHFFFAOYSA-N alpha-D-glucopyranose Natural products OCC1OC(O)C(O)C(O)C1O WQZGKKKJIJFFOK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229940078035 curdlan Drugs 0.000 description 1
- 235000019316 curdlan Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229930182830 galactose Natural products 0.000 description 1
- 239000012213 gelatinous substance Substances 0.000 description 1
- 239000000416 hydrocolloid Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention belongs to the technical field of organic synthesis, and relates to a tackifying and cutting biopolymer and a preparation method thereof. The preparation method comprises the following steps: sequentially adding indolo [2,3-C ] carbazole, ethanol and epihalohydrin into a reactor, adjusting pH to 9-10, heating for reflux, reacting, distilling under reduced pressure, adding distilled water, and heating; adding guar gum and sodium hydroxide solution, stirring for reaction, heating, preserving heat for reaction, regulating pH to 7-8 with hydrochloric acid, cooling to room temperature, adding ethanol, filtering, oven drying, and pulverizing to obtain the final product. The invention has the characteristics of simple synthesis process, high apparent viscosity and good shearing resistance.
Description
Technical Field
The invention belongs to the technical field of organic synthesis, and relates to a tackifying and cutting biopolymer and a preparation method thereof.
Background
Guar gum (guar gum) is a galactomannan gum, which is a natural polymer curdlan extracted from the endosperm of guar seeds produced in India, pakistan, etc. As a biopolymer, guar gum is a macromolecular natural hydrocolloid, belonging to one of natural galactomannans, quality improvers, a natural thickener. The appearance is free flowing powder from white to yellowish, can be dissolved in cold water or hot water, and forms gelatinous substances after meeting water, thereby achieving the effect of rapid thickening.
Guar gum is a natural galactomannan, which is composed of (1-4) -beta-D-mannans as main chains, single alpha-D-galactopyranose as side chains, and (1-6) bonds connected with the main chains. Galactose is randomly distributed throughout the molecule in the backbone but is often present in groups of two or three, and this substantially linear branched structure determines the properties of guar gum as opposed to those of unbranched, water insoluble glucomannans.
Guar gum has excellent performance and is widely applied in the fields of cosmetics, petroleum drilling and production, food, medicine, textile printing and dyeing, building coating, papermaking and the like. Especially, the research and application in the oil field fracturing fluid are started from the 90 th century of 20 th century, and the oil field fracturing fluid has good performance and wide prospect.
To impart better performance properties to guar gum, guar gum base is typically chemically modified. The modification of guar gum has two main directions: one is to introduce functional groups into molecular chains, so that properties which are not possessed by guar gum are obtained, and the other is to try to increase the length of the molecular chains of guar gum, increase the molecular weight of the guar gum, and further enhance the bridging connection capability of the guar gum.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a tackifying and cutting biopolymer and a preparation method thereof.
One of the purposes of the invention discloses a tackifying and cutting biopolymer, and the molecular structural formula of the biopolymer is as follows:
wherein Guar stands for Guar molecule.
The invention also discloses a preparation method of the tackifying and cutting biopolymer, which comprises the following specific steps:
(1) Sequentially adding indolo [2,3-C ] carbazole, ethanol and epihalohydrin into a reactor, regulating pH to 9-10 with sodium hydroxide solution, heating for reflux, reacting for 2-4h, distilling off 70-80% ethanol under reduced pressure, adding distilled water, and heating to 60-70deg.C;
(2) Adding distilled water, guar gum and 10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1-2h, heating to 60-70 ℃, adding the mixed liquid in the step (1), carrying out heat preservation and reacting for 2-4h, regulating pH to 7-8 with hydrochloric acid, cooling to room temperature, adding ethanol, filtering, drying and crushing to obtain the product biopolymer.
Preferably, in the step (1), the epihalohydrin is one of epichlorohydrin and epibromohydrin, and the molar ratio of the epihalohydrin to the indolo [2,3-C ] carbazole is 1.6-2.4:1.
preferably, in the step (1), the weight ratio of the ethanol, the distilled water and the indolo [2,3-C ] carbazole is 6-8:4-6:1.
preferably, in the step (2), the weight ratio of the distilled water, guar gum, 10wt% sodium hydroxide solution, ethanol and indolo [2,3-C ] carbazole is 15-20:3-4:1-2:20-30:1.
the reaction equation for the biopolymer synthesis of the present invention is as follows:
the biopolymer is obtained by grafting modification of guar gum molecules. Indolo [2,3-C ] carbazole is introduced into guar gum molecules, and belongs to a strong rigid structure, so that the shearing resistance is greatly improved, different guar gum molecules can be connected to the same molecule, the molecular weight is improved, and the viscosity of guar gum can be greatly improved.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The biopolymer of the invention has wide sources of raw materials, simple synthesis process and no pollution.
(2) The biopolymer has the characteristic of high apparent viscosity, and the concentration of 0.6wt% can reach 680 mPa.s at the highest;
(3) The biopolymer of the invention has stronger shear rate, and can be used for 170s at 80 DEG C －1 Continuously shearing for 2 hours under the shearing rate condition, wherein the viscosity retention rate can reach 74.2%; at 120 ℃ for 170s －1 The viscosity retention rate can reach 65.4% after continuous shearing for 2 hours under the shearing rate condition.
Drawings
FIG. 1 shows a biopolymer S according to the invention 8 A rheology profile at 80 ℃;
FIG. 2 shows a biopolymer S according to the invention 8 Rheology profile at 120 ℃.
Detailed Description
Other advantages and effects of the present invention will become readily apparent to those skilled in the art from the following disclosure, when considered in light of the following detailed description of the invention. The invention may be practiced or carried out in other embodiments that depart from the specific details disclosed herein and that may be modified or varied from the spirit and scope of the present invention.
The invention is further illustrated below with reference to examples.
Example 1
(1) 0.05mol of indolo [2,3-C ] carbazole, 76.9g of ethanol and 0.08mol of epichlorohydrin are added into a reactor in sequence, the pH value is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed, the reaction is carried out for 2 hours, 70% of ethanol by weight is distilled off under reduced pressure, and 51.3g of distilled water is added to raise the temperature to 60 ℃.
(2) Adding 192g of distilled water, 51.2g of guar gum and 12.8g of 10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1h, heating to 60 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 2h, regulating pH to 7-8 with hydrochloric acid, cooling to room temperature, adding 256g of ethanol, filtering, drying and crushing to obtain the product biopolymer S 1 。
Example 2
(1) 0.05mol of indolo [2,3-C ] carbazole, 81.4g of ethanol and 0.085mol of epichlorohydrin are added into a reactor in sequence, the pH value is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed, the reaction is carried out for 3 hours, 80% of ethanol by weight is distilled off under reduced pressure, and 56.4g of distilled water is added to raise the temperature to 70 ℃.
(2) Adding 214g distilled water, 48.4g guar gum and 15.4g10wt% sodium hydroxide solution into another reactor, stirring and reacting for 2 hours, heating to 70 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 4 hours, regulating pH to 7-8 by hydrochloric acid, cooling to room temperature, adding 268.4g ethanol, filtering, drying and crushing to obtain the product biopolymer S 2 。
Example 3
(1) 0.05mol of indolo [2,3-C ] carbazole, 88.6g of ethanol and 0.09mol of epichlorohydrin are added into a reactor in sequence, the pH value is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed, the reaction is carried out for 3 hours, 75% of ethanol by weight is distilled off under reduced pressure, and 61.3g of distilled water is added to raise the temperature to 68 ℃.
(2) Adding 222.3g of distilled water, 46.2g of guar gum and 17.6g of 10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1h, heating to 68 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 2.5h, adjusting pH to 7-8 by hydrochloric acid, cooling to room temperature, adding 291.3g of ethanol, filtering, drying and crushing to obtain the product biopolymer S 3 。
Example 4
(1) 0.05mol of indolo [2,3-C ] carbazole, 102.4g of ethanol and 0.095mol of epichlorohydrin are added into a reactor in sequence, the pH value is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed, the reaction is carried out for 2.5 hours, 80% of ethanol by weight is distilled off under reduced pressure, and 65.8g of distilled water is added to heat the mixture to 65 ℃.
(2) Adding 244.3g of distilled water, 44.5g of guar gum and 18.9g of 10wt% sodium hydroxide solution into another reactor, stirring and reacting for 2 hours, heating to 65 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 3.5 hours, regulating pH to 7-8 by hydrochloric acid, cooling to room temperature, adding 299g of ethanol, filtering, drying and crushing to obtain the product biopolymer S 4 。
Example 5
(1) 0.05mol of indolo [2,3-C ] carbazole, 99.2g of ethanol and 0.12mol of epichlorohydrin are added into a reactor in sequence, the pH value is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed, the reaction is carried out for 4 hours, 80% of ethanol by weight is distilled off under reduced pressure, and 71.4g of distilled water is added to raise the temperature to 70 ℃.
(2) Adding 256g distilled water, 42.6g guar gum and 20.3g10wt% sodium hydroxide solution into another reactor, stirring to react for 1h, heating to 70 ℃, adding the mixed liquid in the step (1), preserving heat to react for 4h, regulating pH to 7-8 with hydrochloric acid, cooling to room temperature, adding 333g ethanol, filtering, drying and crushing to obtain the product biopolymer S 5 。
Example 6
(1) 0.05mol of indolo [2,3-C ] carbazole, 87g of ethanol and 0.11mol of epoxy bromopropane are sequentially added into a reactor, the pH is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed for 4 hours, 70% of ethanol by weight is distilled off under reduced pressure, and 76.8g of distilled water is added to raise the temperature to 60 ℃.
(2) Adding 231g distilled water, 38.4g guar gum and 22g10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1h, heating to 60 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 2h, regulating pH to 7-8 with hydrochloric acid, cooling to room temperature, adding 358.4g ethanol, filtering, drying and crushing to obtain the product biopolymer S 6 。
Example 7
(1) 0.05mol of indolo [2,3-C ] carbazole, 83g of ethanol and 0.105mol of epoxy bromopropane are sequentially added into a reactor, the pH is regulated to 9-10 by sodium hydroxide solution, the mixture is heated and refluxed for 4 hours, 75% of ethanol by weight is distilled off under reduced pressure, and 69.2g of distilled water is added to raise the temperature to 70 ℃.
(2) Adding 207.4g of distilled water, 40g of guar gum and 23.6g of 10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1.5h, heating to 70 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 3.3h, adjusting pH to 7-8 with hydrochloric acid, cooling to room temperature, adding 377.1g of ethanol, filtering, drying and crushing to obtain the biopolymer S 7 。
Example 8
(1) 0.05mol of indolo [2,3-C ] carbazole, 81.7g of ethanol and 0.1mol of epoxy bromopropane are sequentially added into a reactor, the pH is regulated to 9-10 by using a sodium hydroxide solution, the mixture is heated and refluxed for 2.5 hours, 78% of ethanol by weight is distilled off under reduced pressure, and 67.3g of distilled water is added to raise the temperature to 68 ℃.
(2) Adding 225.1g distilled water, 39g guar gum and 25g10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1h, heating to 68 ℃, adding the mixed liquid in the step (1), preserving heat and reacting for 4h, adjusting pH to 7-8 with hydrochloric acid, cooling to room temperature, adding 384g ethanol, filtering, drying and crushing to obtain the product biopolymer S 8 。
Example 9 apparent viscosity test
The evaluation method is carried out with reference to SY/T5764-2007 general technical requirement for vegetable gums for fracturing.
500mL of distilled water was measured in a blender, started at low speed, and 3.00g of biopolymer (S) 1 -S 8 ) Regulating the voltage to 50-55V, stirring for 5min, pouring the biopolymer solution into a beaker, capping, placing in a water bath at 30 ℃ for 4h at constant temperature, and testing the apparent viscosity.
The results of the comparison experiments with unmodified guar are shown in Table 1.
TABLE 1 apparent viscosity test results
| S 1 | S 2 | S 3 | S 4 | S 5 | S 6 | S 7 | S 8 | Before transformation | |
| Viscosity, mPas | 605 | 642 | 635 | 652 | 665 | 680 | 674 | 680 | 210 |
As can be seen from table 1:
biopolymer S of the invention 1 -S 8 At a concentration of 0.6% by weight, the apparent viscosity is greater than 600 mPas up to 680 mPas (S) 8 ) The method comprises the steps of carrying out a first treatment on the surface of the Whereas the apparent viscosity of the comparative experiment (guar gum before modification) was 210 mPas, which was significantly lowerIn the present invention.
Example 10 evaluation of Heat and shear resistance
Sample (S) in example 9 8 ) Adding into MARS-III high temperature high pressure rotary rheometer, heating to 80, 120deg.C, and heating for 170s －1 Is continuously sheared for 2 hours, and the viscosity value is read on line.
The results of the comparison experiment with unmodified guar are shown in figures 1 and 2.
As can be seen from fig. 1: shearing at 80deg.C for 2 hr to obtain S 8 The viscosity of (2) was reduced from 302 to 224.1 mPas with a viscosity retention of 74.2%, whereas the unmodified guar viscosity was reduced from 100 to 22.4 mPas with a viscosity retention of 22.4%.
As can be seen from fig. 2: shearing at 120deg.C for 2 hr to obtain S 8 The viscosity of (3) was reduced from 215 mPas to 140.7 mPas with a viscosity retention of 65.4%, whereas the unmodified guar viscosity was reduced from 78 mPas to 14 mPas with a viscosity retention of 17.9%.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (6)
1. The preparation method of the tackifying and cutting biopolymer is characterized by comprising the following specific steps:
(1) Sequentially adding indolo [2,3-C ] carbazole, ethanol and epihalohydrin into a reactor, regulating pH to 9-10 with sodium hydroxide solution, heating for reflux, reacting for 2-4h, distilling off 70-80% ethanol under reduced pressure, adding distilled water, and heating to 60-70deg.C;
(2) Adding distilled water, guar gum and 10wt% sodium hydroxide solution into another reactor, stirring and reacting for 1-2h, heating to 60-70 ℃, adding the mixed liquid in the step (1), carrying out heat preservation and reacting for 2-4h, regulating pH to 7-8 with hydrochloric acid, cooling to room temperature, adding ethanol, filtering, drying and crushing to obtain the product biopolymer.
2. The method for producing a thickening and cutting biopolymer according to claim 1, wherein in the step (1), the epihalohydrin is one of epichlorohydrine and epibromohydrine.
3. The method for preparing a tackifying and cutting biopolymer according to claim 1 or 2, wherein the molar ratio of epihalohydrin to indolo [2,3-C ] carbazole is 1.6-2.4:1.
4. the method for preparing a tackifying and cutting biopolymer according to claim 1, wherein in the step (1), the weight ratio of ethanol, distilled water and indolo [2,3-C ] carbazole is 6-8:4-6:1.
5. the method for preparing a tackifying and cutting biopolymer according to claim 1, wherein in the step (2), the weight ratio of distilled water, guar gum, 10wt% sodium hydroxide solution, ethanol and indolo [2,3-C ] carbazole is 15-20:3-4:1-2:20-30:1.
6. a tackifying and cutting biopolymer, characterized in that the molecular structural formula of the biopolymer is as follows:
wherein Guar stands for Guar molecule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311862263.9A CN117777315B (en) | 2023-12-28 | 2023-12-28 | Tackifying and cutting biopolymer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311862263.9A CN117777315B (en) | 2023-12-28 | 2023-12-28 | Tackifying and cutting biopolymer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117777315A true CN117777315A (en) | 2024-03-29 |
| CN117777315B CN117777315B (en) | 2024-08-06 |
Family
ID=90389292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311862263.9A Active CN117777315B (en) | 2023-12-28 | 2023-12-28 | Tackifying and cutting biopolymer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117777315B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111264A (en) * | 2020-09-24 | 2020-12-22 | 西南石油大学 | Guar gum graft copolymer nano composite gel fracturing fluid and preparation method thereof |
| CN117088993A (en) * | 2023-10-18 | 2023-11-21 | 东营市宝泽能源科技有限公司 | Guar gum for oilfield fracturing and preparation method thereof |
| CN117164738A (en) * | 2023-09-27 | 2023-12-05 | 东营施普瑞石油工程技术有限公司 | Modified guar gum for fracturing and preparation method thereof |
-
2023
- 2023-12-28 CN CN202311862263.9A patent/CN117777315B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111264A (en) * | 2020-09-24 | 2020-12-22 | 西南石油大学 | Guar gum graft copolymer nano composite gel fracturing fluid and preparation method thereof |
| CN117164738A (en) * | 2023-09-27 | 2023-12-05 | 东营施普瑞石油工程技术有限公司 | Modified guar gum for fracturing and preparation method thereof |
| CN117088993A (en) * | 2023-10-18 | 2023-11-21 | 东营市宝泽能源科技有限公司 | Guar gum for oilfield fracturing and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| ATHIRA SREEDEVI MADHAVIKUTTY: "pH responsive cationic guar gum-borate self- healing hydrogels for muco-adhesion", SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, vol. 24, no. 1, 28 February 2023 (2023-02-28), pages 21722886 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117777315B (en) | 2024-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116693715B (en) | High-temperature-resistant modified guar gum and synthetic method thereof | |
| CN114773494B (en) | Amphoteric guar gum and preparation method thereof | |
| JPS60192753A (en) | Synergistic viscosifier composition | |
| Reddy et al. | Free radical degradation of guar gum | |
| CN107987820B (en) | Temperature-resistant and salt-resistant oil displacement polymer and preparation method and application thereof | |
| US20080281000A1 (en) | Hydrophobic Polysaccharide Derivatives | |
| CN117088993B (en) | Guar gum for oilfield fracturing and preparation method thereof | |
| CN117164738B (en) | Modified guar gum for fracturing and preparation method thereof | |
| CN109970916A (en) | Cellulose graft copolymer and its preparation method and application | |
| CN117069888B (en) | Polymer thickener for salt-resistant fracturing and synthesis method thereof | |
| CN116655828A (en) | Modified guar gum for fracturing and preparation method thereof | |
| CN115232261A (en) | Hybrid gelling agent for oilfield acidification based on POSS-based crosslinking agent and preparation method thereof | |
| CN117777315B (en) | Tackifying and cutting biopolymer and preparation method thereof | |
| WO2001074907A1 (en) | Viscosified aqueous fluids and viscosifier therefor | |
| CN110964496A (en) | Fracturing fluid thickening tackifier | |
| CN114702632A (en) | Filtrate reducer for water-based drilling fluid and preparation method thereof | |
| CN114605970B (en) | Humic acid resin filtrate reducer for drilling fluid and preparation method thereof | |
| CN113248665B (en) | Sewage-resistant polymer for oil extraction and preparation method thereof | |
| CN112210021B (en) | Cationic guar gum thickener, and preparation method and application thereof | |
| CN117431053B (en) | Polymer suspension emulsion for fracturing fluid and preparation method thereof | |
| CN118146446B (en) | Fracturing fluid thickener and preparation method thereof | |
| CN116063585B (en) | Modified temperature-resistant guanidine gum and preparation method thereof | |
| CN114949940B (en) | Defoaming agent for oil field and preparation method thereof | |
| CN114891156B (en) | Series methyl alkyl substituent diallyl ammonium chloride copolymer demulsifier and preparation method thereof | |
| CN1528839A (en) | Preparation of coating printing thickener grafted by acrylic/acrylamide |
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 |