CN102516443A - Method for preparing super absorbent resin - Google Patents
Method for preparing super absorbent resin Download PDFInfo
- Publication number
- CN102516443A CN102516443A CN2011104194958A CN201110419495A CN102516443A CN 102516443 A CN102516443 A CN 102516443A CN 2011104194958 A CN2011104194958 A CN 2011104194958A CN 201110419495 A CN201110419495 A CN 201110419495A CN 102516443 A CN102516443 A CN 102516443A
- Authority
- CN
- China
- Prior art keywords
- parts
- absorbent resin
- super absorbent
- water
- preparation
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 29
- 229920005989 resin Polymers 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title abstract description 5
- 239000002250 absorbent Substances 0.000 title abstract 7
- 230000002745 absorbent Effects 0.000 title abstract 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003999 initiator Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000000084 colloidal system Substances 0.000 claims abstract description 9
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 8
- 239000012966 redox initiator Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 5
- LVHBHZANLOWSRM-UHFFFAOYSA-N itaconic acid Chemical group OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 26
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 12
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical group C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 12
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 10
- 238000006392 deoxygenation reaction Methods 0.000 claims description 7
- 238000013467 fragmentation Methods 0.000 claims description 7
- 238000006062 fragmentation reaction Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000012745 toughening agent Substances 0.000 claims description 6
- 235000010265 sodium sulphite Nutrition 0.000 claims description 5
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 claims description 4
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 4
- 239000004160 Ammonium persulphate Substances 0.000 claims description 3
- 239000004159 Potassium persulphate Substances 0.000 claims description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical group [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 235000019394 potassium persulphate Nutrition 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 22
- 239000008367 deionised water Substances 0.000 abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 2
- 239000003431 cross linking reagent Substances 0.000 abstract 2
- 239000012744 reinforcing agent Substances 0.000 abstract 2
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
- Polymerization Catalysts (AREA)
Abstract
The invention relates to the field of polymerization water-soluble high molecular auxiliary chemicals, in particular to a method for preparing super absorbent resin. The super absorbent resin comprises the following raw materials in parts by weight: 100 to 300 parts of acrylic acid, 100 to 300 parts of caustic soda solution with the mass concentration of 25 to 50 percent, 50 to 100 parts of cross linking agent, 100 to 300 parts of deionized water, 20 to 100 parts of reinforcing agent and 0.5 to 2 parts of redox initiator. The preparation method comprises the following steps of: after adding the acrylic acid into a reactor, adding the caustic soda solution to neutralize; then adding the cross linking agent and the reinforcing agent and filling nitrogen to remove oxygen; adding the initiator to carry out polymerization at a temperature of 30 to 80 DEG C; and after the reaction is completed, obtaining colloid and pelleting, drying and crushing the colloid to obtain the super absorbent resin. The super absorbent resin prepared by the method has higher water adsorption speed and larger water adsorption times. Compared with the existing super absorbent resin, the super absorbent resin prepared by the method can have better water adsorption and water retention effects under the condition of small using amount.
Description
Technical field
The present invention relates to polywater soluble macromolecular auxiliary chemicals field, relate in particular to a kind of preparation method of High hydrophilous resin.
Background technology
Water treatment field now, water quality is increasingly sophisticated, and the requirement of Water Treatment Chemicals is also improved day by day.Mostly polymer flocculant SEPIGEL 305 commonly used in the market is linear structure.It is bigger that its flocculating effect is influenced by the strong shearing action of whizzer, makes the purifying water effect variation, and adding dose increases.
Summary of the invention
The object of the invention is exactly the defective that exists to prior art, and the preparation method of the High hydrophilous resin of absorption speed that a kind of technology simply can significantly improve SAP and water retention capacity is provided.
The present invention realizes that through following technical scheme the weight part of raw material consists of: vinylformic acid 100-300, mass concentration 25-50% sodium hydroxide solution 100-300, linking agent 50-100, water 100-300, toughener 20-100, redox initiator 0.5-2; The preparation process is: after in reactor drum, adding vinylformic acid, add the sodium hydroxide solution neutralization; Add linking agent, toughener, water then, add the redox initiator initiator after the deoxygenation 30-80 ℃ of polymerization; Obtain colloid after reaction finishes and obtain High hydrophilous resin through granulation, drying, fragmentation.
Described linking agent is a N,N methylene bis acrylamide, and described toughener is a methylene-succinic acid, can significantly improve the suction multiple and the absorption speed of water-absorbing resin.
Said redox initiator is the combination of superoxide and sodium sulfite anhy 96, perhaps the combination of persulphate and sodium sulfite anhy 96.
Said superoxide is a hydrogen peroxide; Described persulphate is Potassium Persulphate or ammonium persulphate.
Described polymerization time can confirm that begin to rise to reaction starting point with temperature, temperature no longer rises to reaction end, is preferably 3-6 hour according to the real reaction situation.
The leading indicator of the High hydrophilous resin of the present invention's preparation:
Outward appearance: white particle
PH value: 6.5-7
Inhale the zero(ppm) water multiple: >=2000 times
Inhale the artificial urine multiple: >=800 times
Inhale 0.9% saline water: >=1000 times
The High hydrophilous resin of the present invention's preparation has absorption speed and bigger suction multiple faster, compares with current water-absorbing resin, can be issued to suction, water conservation effect preferably at less consumption.And have following advantage: 1) method for making is easy, and technology is simple; 2) do not use azo-initiator, no azo class material is residual, more is applicable to sanitary product; 3) introduced methylene-succinic acid, resulting resin has stronger absorption speed and stronger water retention capacity; 4), do not have " three wastes " without organic solvent.
Embodiment
Provide five exemplary embodiments below; Initiator wherein can be selected the mixture of hydrogen peroxide, ammonium persulphate and Potassium Persulphate thrin and sodium sulfite anhy 96; The concentration of sodium hydroxide solution is not limited to the concentration among the embodiment; Can suitably select, concentration is selected when higher, and the amount of deionized water can suitably reduce.
Embodiment 1
Each ingredients weight parts:
Vinylformic acid 100
50% sodium hydroxide solution 120
N,N methylene bis acrylamide 80
Deionized water 196
Methylene-succinic acid 60
Initiator 0.5
The preparation process is:
1, earlier vinylformic acid is joined in the reaction kettle;
2, neutralize with sodium hydroxide solution then;
3, add N,N methylene bis acrylamide, deionized water, methylene-succinic acid then;
4, open stirring then, and feed the high pure nitrogen deoxygenation;
5, under nitrogen protection, add initiator 50 ℃ of polymerizations 5 hours;
6, colloid obtains High hydrophilous resin through granulation, drying, fragmentation.
Embodiment 2
Each ingredients weight parts:
Vinylformic acid 90
50% sodium hydroxide solution 110
N,N methylene bis acrylamide 120
Deionized water 200
Methylene-succinic acid 100
Initiator 1.2
The preparation process is:
1, general/vinylformic acid joins in the reaction kettle earlier;
2, neutralize with sodium hydroxide solution then;
3, add N,N methylene bis acrylamide, deionized water, methylene-succinic acid then;
4, open stirring then, and feed the high pure nitrogen deoxygenation;
5, under nitrogen protection, add initiator 70 ℃ of polymerizations 4 hours;
6, colloid obtains High hydrophilous resin through granulation, drying, fragmentation.
Embodiment 3
Each ingredients weight parts:
Vinylformic acid 150
50% sodium hydroxide solution 180
N,N methylene bis acrylamide 60
Deionized water 160
Methylene-succinic acid 70
Initiator 1
The preparation process is:
1, general/vinylformic acid joins in the reaction kettle earlier;
2, neutralize with sodium hydroxide solution then;
3, add N,N methylene bis acrylamide, deionized water, methylene-succinic acid then;
4, open stirring then, and feed the high pure nitrogen deoxygenation;
5, under nitrogen protection, add initiator at 80 ℃ of polyase 13 .5 hours;
6, colloid obtains High hydrophilous resin through granulation, drying, fragmentation.
Embodiment 4
Each ingredients weight parts:
Vinylformic acid 300
50% sodium hydroxide solution 300
N,N methylene bis acrylamide 100
Deionized water 300
Methylene-succinic acid 100
Initiator 2
The preparation process is:
1, general/vinylformic acid joins in the reaction kettle earlier;
2, neutralize with sodium hydroxide solution then;
3, add N,N methylene bis acrylamide, deionized water, methylene-succinic acid then;
4, open stirring then, and feed the high pure nitrogen deoxygenation;
5, under nitrogen protection, add initiator at 80 ℃ of polyase 13s hour;
6, colloid obtains High hydrophilous resin through granulation, drying, fragmentation.
Embodiment 5
Each ingredients weight parts:
Vinylformic acid 100
50% sodium hydroxide solution 100
N,N methylene bis acrylamide 50
Deionized water 100
Methylene-succinic acid 20
Initiator 0.8
The preparation process is:
1, general/vinylformic acid joins in the reaction kettle earlier;
2, neutralize with sodium hydroxide solution then;
3, add N,N methylene bis acrylamide, deionized water, methylene-succinic acid then;
4, open stirring then, and feed the high pure nitrogen deoxygenation;
5, under nitrogen protection, add initiator 30 ℃ of polymerizations 6 hours;
6, colloid obtains High hydrophilous resin through granulation, drying, fragmentation.
Above embodiment 1-5 only is a part exemplary embodiments of the present invention, and the raw material among the present invention is carried out other combination, as long as keep proportioning raw materials and controlled variable among the present invention, the High hydrophilous resin of preparation all can reach following index:
Outward appearance: white particle
PH value: 6.5-7
Inhale the zero(ppm) water multiple: >=2000 times
Inhale the artificial urine multiple: >=800 times
Inhale 0.9% saline water: >=1000 times
Verify through actual the use; This product has been introduced new monomer, has the bigger wetting ability group of density, thereby has absorption speed faster and greater than the suction multiple of 2000ml/g; Compare with current water-absorbing resin, can be issued to suction, water conservation effect preferably at less consumption.
Claims (5)
1. the preparation method of a High hydrophilous resin is characterized in that, the weight part of raw material consists of: vinylformic acid 100-300; Mass concentration 25-50% sodium hydroxide solution 100-300, linking agent 50-100, water 100-300; Toughener 20-100, redox initiator 0.5-2; The preparation process is: after in reactor drum, adding vinylformic acid, add the sodium hydroxide solution neutralization; Add linking agent, toughener, water then, add initiator after the deoxygenation 30-80 ℃ of polymerization; The colloid that reaction obtains after finishing obtains High hydrophilous resin through granulation, drying, fragmentation.
2. the preparation method of High hydrophilous resin according to claim 1 is characterized in that, described linking agent is a N,N methylene bis acrylamide, and described toughener is a methylene-succinic acid.
3. the preparation method of High hydrophilous resin according to claim 1 is characterized in that, said redox initiator is the combination of superoxide and sodium sulfite anhy 96, perhaps the combination of persulphate and sodium sulfite anhy 96.
4. the preparation method of High hydrophilous resin according to claim 3 is characterized in that, said superoxide is a hydrogen peroxide; Described persulphate is Potassium Persulphate or ammonium persulphate.
5. according to the preparation method of the described High hydrophilous resin of the arbitrary claim of 1-4, it is characterized in that described polymerization time is 3-6 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110419495.8A CN102516443B (en) | 2011-12-15 | 2011-12-15 | Method for preparing super absorbent resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110419495.8A CN102516443B (en) | 2011-12-15 | 2011-12-15 | Method for preparing super absorbent resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102516443A true CN102516443A (en) | 2012-06-27 |
| CN102516443B CN102516443B (en) | 2014-01-01 |
Family
ID=46287549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110419495.8A Active CN102516443B (en) | 2011-12-15 | 2011-12-15 | Method for preparing super absorbent resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102516443B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702656A (en) * | 2012-07-05 | 2012-10-03 | 东营市诺尔化工有限责任公司 | Preparation method of high liquid permeability water-absorbing resin |
| CN103214616A (en) * | 2013-04-16 | 2013-07-24 | 华南理工大学 | Preparation method of porous-super-absorbent resin |
| CN104403249A (en) * | 2014-11-19 | 2015-03-11 | 山东诺尔生物科技有限公司 | Preparation method of antibacterial super absorbent resin |
| CN104479074A (en) * | 2014-11-13 | 2015-04-01 | 苏州威尔德工贸有限公司 | High water-absorbing resin for diaper and preparation method thereof |
| CN105131208A (en) * | 2015-08-13 | 2015-12-09 | 浙江省林业科学研究院 | Rice husk carbon-based water retention agent preparation method and rice husk carbon-based water retention agent |
| CN106317280A (en) * | 2016-08-22 | 2017-01-11 | 山东诺尔生物科技有限公司 | Preparation method of high-expansivity water-absorbent resin for cable water-blocking tapes |
| CN106380536A (en) * | 2016-09-19 | 2017-02-08 | 山东诺尔生物科技有限公司 | Preparation method of high-polymer material for water blocking |
| CN109776731A (en) * | 2017-11-13 | 2019-05-21 | 济南华迪工贸有限公司 | A kind of preparation method of polyacrylic acid large-particle size bead-like water-absorbent resin |
| CN112159283A (en) * | 2020-10-18 | 2021-01-01 | 山东喜美农业科技有限公司 | Preparation and use methods of chitosan oligosaccharide coated slow-release fertilizer |
| CN112175143A (en) * | 2020-10-18 | 2021-01-05 | 山东喜美农业科技有限公司 | Preparation method of chitosan oligosaccharide coated sustained release agent |
| WO2023188633A1 (en) * | 2022-03-30 | 2023-10-05 | Ｓｄｐグローバル株式会社 | Water-absorbable resin composition, absorber and absorbent article each using same, and method for producing water-absorbable resin composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587289A (en) * | 2004-07-09 | 2005-03-02 | 浙江大学 | Process for preparing high water absorption resin |
| CN1624008A (en) * | 2004-10-28 | 2005-06-08 | 长沙国藩科技有限公司 | Colour composite high water absorbing resin and its preparation process |
| US20110301027A1 (en) * | 2008-12-19 | 2011-12-08 | Sca Hygiene Products Ab | Superabsorbent polymer composite comprising a superabsorbent polymer and cellulosic nanofibrils |
-
2011
- 2011-12-15 CN CN201110419495.8A patent/CN102516443B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587289A (en) * | 2004-07-09 | 2005-03-02 | 浙江大学 | Process for preparing high water absorption resin |
| CN1624008A (en) * | 2004-10-28 | 2005-06-08 | 长沙国藩科技有限公司 | Colour composite high water absorbing resin and its preparation process |
| US20110301027A1 (en) * | 2008-12-19 | 2011-12-08 | Sca Hygiene Products Ab | Superabsorbent polymer composite comprising a superabsorbent polymer and cellulosic nanofibrils |
Non-Patent Citations (1)
| Title |
|---|
| 吴力立: "聚衣康酸/ 聚丙烯酸互穿网络水凝胶的研究", 《武汉理工大学学报》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702656A (en) * | 2012-07-05 | 2012-10-03 | 东营市诺尔化工有限责任公司 | Preparation method of high liquid permeability water-absorbing resin |
| CN102702656B (en) * | 2012-07-05 | 2013-12-04 | 东营市诺尔化工有限责任公司 | Preparation method of high liquid permeability water-absorbing resin |
| CN103214616A (en) * | 2013-04-16 | 2013-07-24 | 华南理工大学 | Preparation method of porous-super-absorbent resin |
| CN103214616B (en) * | 2013-04-16 | 2015-09-02 | 华南理工大学 | A kind of preparation method of porous-super-absorberesin resin |
| CN104479074A (en) * | 2014-11-13 | 2015-04-01 | 苏州威尔德工贸有限公司 | High water-absorbing resin for diaper and preparation method thereof |
| CN104403249A (en) * | 2014-11-19 | 2015-03-11 | 山东诺尔生物科技有限公司 | Preparation method of antibacterial super absorbent resin |
| CN105131208A (en) * | 2015-08-13 | 2015-12-09 | 浙江省林业科学研究院 | Rice husk carbon-based water retention agent preparation method and rice husk carbon-based water retention agent |
| CN106317280A (en) * | 2016-08-22 | 2017-01-11 | 山东诺尔生物科技有限公司 | Preparation method of high-expansivity water-absorbent resin for cable water-blocking tapes |
| CN106380536A (en) * | 2016-09-19 | 2017-02-08 | 山东诺尔生物科技有限公司 | Preparation method of high-polymer material for water blocking |
| CN109776731A (en) * | 2017-11-13 | 2019-05-21 | 济南华迪工贸有限公司 | A kind of preparation method of polyacrylic acid large-particle size bead-like water-absorbent resin |
| CN112159283A (en) * | 2020-10-18 | 2021-01-01 | 山东喜美农业科技有限公司 | Preparation and use methods of chitosan oligosaccharide coated slow-release fertilizer |
| CN112175143A (en) * | 2020-10-18 | 2021-01-05 | 山东喜美农业科技有限公司 | Preparation method of chitosan oligosaccharide coated sustained release agent |
| CN112175143B (en) * | 2020-10-18 | 2022-03-29 | 山东喜美农业科技有限公司 | Preparation method of chitosan oligosaccharide coated sustained release agent |
| CN112159283B (en) * | 2020-10-18 | 2022-05-13 | 史丹利化肥（平原）有限公司 | Preparation and use methods of chitosan oligosaccharide coated slow-release fertilizer |
| WO2023188633A1 (en) * | 2022-03-30 | 2023-10-05 | Ｓｄｐグローバル株式会社 | Water-absorbable resin composition, absorber and absorbent article each using same, and method for producing water-absorbable resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102516443B (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102516443B (en) | Method for preparing super absorbent resin | |
| CN102382264B (en) | Preparation method of cellulose-based water absorbent material | |
| CN103214616B (en) | A kind of preparation method of porous-super-absorberesin resin | |
| RU2006134597A (en) | METHOD FOR PRODUCING AN ABSORBING AGENT AND AN ABSORBING AGENT | |
| CN103044636B (en) | Preparation method of enzymatically hydrolyzed sericin protein composite absorbent material | |
| CN102702656B (en) | Preparation method of high liquid permeability water-absorbing resin | |
| CN106565913A (en) | Preparation method of urea-wrapped cellulose-based super absorbent resin | |
| CN102516455A (en) | Multi-polymerization preparation method of flocculant | |
| CN102532409A (en) | Method for preparing net-shaped cationic polyacrylamide | |
| CN104448134A (en) | Method for preparing acrylamide copolymer | |
| CN103613709A (en) | Method for synthesizing special heavy metal absorption ion resin by using potato starch xanthate as raw material | |
| CN103058561A (en) | Environmentally-friendly low-energy-consumption polycarboxylic acid high-performance reducer as well as preparation method and application thereof | |
| CN101440144A (en) | Zwitterion association type high wate-absorption resin and preparing method thereof | |
| CN105693952A (en) | Natural component water-retaining agent production technology | |
| CN104403249A (en) | Preparation method of antibacterial super absorbent resin | |
| CN102417564A (en) | Water-retaining agent and preparation method thereof by papermaking sludge | |
| CN107555567A (en) | A kind of composite polyacrylamide for sewage disposal | |
| CN104892856B (en) | A kind of preparation method of polycarboxylate water-reducer | |
| CN106279563A (en) | A kind of preparation method of urine patience water-absorbing resin | |
| CN103087252B (en) | Preparation method of high-absorption composite | |
| CN100412100C (en) | Seaweed type water-absorbing-retaining material, and its preparing method | |
| CN105384882A (en) | Oxidized peat fulvic acid composite water retaining agent and preparation method thereof | |
| CN101993516A (en) | Ultraviolet light initiation preparation method of polyacrylate type composite super absorbent resin | |
| CN103059223A (en) | Method for synthesizing super absorbent resin through graft copolymerization of alpha-potato starch | |
| CN102702405A (en) | Method for preparing ultralow-residue water absorbing resins |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG NUOER BIOLOGICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: DONGYING NUOER CHEMICAL CO., LTD. Effective date: 20141225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141225 Address after: 257333 Shandong city of Dongying province Dongying Port Economic Development Zone, east of Hong Kong Xi Liu Lu Road south of the harbour Patentee after: SHANDONG NUOER BIOLOGICAL TECHNOLOGY Co.,Ltd. Address before: 257333, Dongying County, Shandong province Guangrao Li magpie Industrial Park Patentee before: Dongguan Nuoer Chemical Co.,Ltd. |
|
| 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: Process for preparing high water absorption resin Effective date of registration: 20170228 Granted publication date: 20140101 Pledgee: Weihai commercial bank Limited by Share Ltd. Dongying branch Pledgor: SHANDONG NUOER BIOLOGICAL TECHNOLOGY Co.,Ltd. Registration number: 2017990000133 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180321 Granted publication date: 20140101 Pledgee: Weihai commercial bank Limited by Share Ltd. Dongying branch Pledgor: SHANDONG NUOER BIOLOGICAL TECHNOLOGY Co.,Ltd. Registration number: 2017990000133 |
|
| PC01 | Cancellation 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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Process for preparing high water absorption resin Effective date of registration: 20180321 Granted publication date: 20140101 Pledgee: Weihai commercial bank Limited by Share Ltd. Dongying branch Pledgor: SHANDONG NUOER BIOLOGICAL TECHNOLOGY Co.,Ltd. Registration number: 2018990000212 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190125 Granted publication date: 20140101 Pledgee: Weihai commercial bank Limited by Share Ltd. Dongying branch Pledgor: SHANDONG NUOER BIOLOGICAL TECHNOLOGY Co.,Ltd. Registration number: 2018990000212 |
|
| PC01 | Cancellation 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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Process for preparing high water absorption resin Effective date of registration: 20190221 Granted publication date: 20140101 Pledgee: Weihai commercial bank Limited by Share Ltd. Dongying branch Pledgor: SHANDONG NUOER BIOLOGICAL TECHNOLOGY Co.,Ltd. Registration number: 2019990000081 |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20191224 Granted publication date: 20140101 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200824 Granted publication date: 20140101 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200824 Granted publication date: 20140101 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200824 Granted publication date: 20140101 |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20221124 Granted publication date: 20140101 |
|
| PP01 | Preservation of patent right |