CA2199466C - Reseaux polymeres surperabsorbants - Google Patents
Reseaux polymeres surperabsorbants Download PDFInfo
- Publication number
- CA2199466C CA2199466C CA002199466A CA2199466A CA2199466C CA 2199466 C CA2199466 C CA 2199466C CA 002199466 A CA002199466 A CA 002199466A CA 2199466 A CA2199466 A CA 2199466A CA 2199466 C CA2199466 C CA 2199466C
- Authority
- CA
- Canada
- Prior art keywords
- polysuccinimide
- crosslinked
- polyaspartate
- reaction mixture
- polymeric network
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 claims abstract description 72
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 44
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011541 reaction mixture Substances 0.000 claims abstract description 30
- 238000004132 cross linking Methods 0.000 claims abstract description 19
- 150000007530 organic bases Chemical class 0.000 claims abstract description 8
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 5
- 150000004985 diamines Chemical class 0.000 claims description 31
- 239000000047 product Substances 0.000 claims description 31
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 31
- 239000000178 monomer Substances 0.000 claims description 18
- 229960002317 succinimide Drugs 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 150000003141 primary amines Chemical group 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 229920005604 random copolymer Polymers 0.000 claims description 5
- 239000000010 aprotic solvent Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 239000012266 salt solution Substances 0.000 claims description 3
- DSLBDPPHINVUID-REOHCLBHSA-N (2s)-2-aminobutanediamide Chemical group NC(=O)[C@@H](N)CC(N)=O DSLBDPPHINVUID-REOHCLBHSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 3
- 239000003960 organic solvent Substances 0.000 claims 3
- CKLJMWTZIZZHCS-REOHCLBHSA-L aspartate group Chemical group N[C@@H](CC(=O)[O-])C(=O)[O-] CKLJMWTZIZZHCS-REOHCLBHSA-L 0.000 claims 1
- 238000010908 decantation Methods 0.000 claims 1
- 238000000502 dialysis Methods 0.000 claims 1
- 238000007865 diluting Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 26
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 abstract description 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 17
- 239000011780 sodium chloride Substances 0.000 description 17
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 16
- 229920000642 polymer Polymers 0.000 description 14
- 150000001412 amines Chemical class 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 8
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000003880 polar aprotic solvent Substances 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- -1 sodium chloride Chemical class 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 5
- QLBRROYTTDFLDX-UHFFFAOYSA-N [3-(aminomethyl)cyclohexyl]methanamine Chemical compound NCC1CCCC(CN)C1 QLBRROYTTDFLDX-UHFFFAOYSA-N 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229920000805 Polyaspartic acid Polymers 0.000 description 4
- 229940009098 aspartate Drugs 0.000 description 4
- MBYLVOKEDDQJDY-UHFFFAOYSA-N tris(2-aminoethyl)amine Chemical compound NCCN(CCN)CCN MBYLVOKEDDQJDY-UHFFFAOYSA-N 0.000 description 4
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 235000003704 aspartic acid Nutrition 0.000 description 3
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001184 polypeptide Polymers 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 108090000765 processed proteins & peptides Proteins 0.000 description 3
- 102000004196 processed proteins & peptides Human genes 0.000 description 3
- 238000012719 thermal polymerization Methods 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 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 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 229940024606 amino acid Drugs 0.000 description 2
- 235000001014 amino acid Nutrition 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 238000007385 chemical modification Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003495 polar organic solvent Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 2
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 description 1
- STMZGJLCKJFMLQ-UHFFFAOYSA-N 2-[3-(2-aminoethyl)cyclohexyl]ethanamine Chemical compound NCCC1CCCC(CCN)C1 STMZGJLCKJFMLQ-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- QCQCHGYLTSGIGX-GHXANHINSA-N 4-[[(3ar,5ar,5br,7ar,9s,11ar,11br,13as)-5a,5b,8,8,11a-pentamethyl-3a-[(5-methylpyridine-3-carbonyl)amino]-2-oxo-1-propan-2-yl-4,5,6,7,7a,9,10,11,11b,12,13,13a-dodecahydro-3h-cyclopenta[a]chrysen-9-yl]oxy]-2,2-dimethyl-4-oxobutanoic acid Chemical compound N([C@@]12CC[C@@]3(C)[C@]4(C)CC[C@H]5C(C)(C)[C@@H](OC(=O)CC(C)(C)C(O)=O)CC[C@]5(C)[C@H]4CC[C@@H]3C1=C(C(C2)=O)C(C)C)C(=O)C1=CN=CC(C)=C1 QCQCHGYLTSGIGX-GHXANHINSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 101150065749 Churc1 gene Proteins 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- 206010021639 Incontinence Diseases 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- 241001077660 Molo Species 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 102100038239 Protein Churchill Human genes 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- BIVUUOPIAYRCAP-UHFFFAOYSA-N aminoazanium;chloride Chemical compound Cl.NN BIVUUOPIAYRCAP-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000005251 capillar electrophoresis Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000013270 controlled release Methods 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003058 plasma substitute Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920006350 polyacrylonitrile resin Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000768 polyamine Chemical class 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003139 primary aliphatic amines Chemical class 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000005619 secondary aliphatic amines Chemical class 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1092—Polysuccinimides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/04—Polyamides derived from alpha-amino carboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Hematology (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
L'invention concerne des procédés de production de réseaux polymères superabsorbants de polyaspartates à partir de polysuccimide réticulé. Dans un aspect préféré, le polysuccimide est tout d'abord mis en réaction avec un agent de réticulation organique, de préférence une base organique contenant au moins deux groupes aminés primaires, pour former du polysuccimide réticulé. Ce polysuccimide réticulé est alors hydrolysé pour former un réseau polymère de polyaspartate qui présente une caractéristique superabsorbante dans l'eau et dans une solution saline. D'autres aspects du procédé sont décrits, dans lesquels des réseaux polymères superabsorbants de polyaspartates sont produits dans une cuve de réaction unique par réticulation séquentielle de polysuccimide au moyen d'un agent de réticulation dans un mélange réactionnel aqueux, puis par hydrolyse du produit réactionnel pour produire un réseau polymère de polyaspartate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/305,266 US5612384A (en) | 1994-09-13 | 1994-09-13 | Superabsorbing polymeric networks |
| US305,266 | 1994-09-13 | ||
| PCT/US1995/011588 WO1996008523A1 (fr) | 1994-09-13 | 1995-09-13 | Reseaux polymeres surperabsorbants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2199466A1 CA2199466A1 (fr) | 1996-03-21 |
| CA2199466C true CA2199466C (fr) | 2007-04-03 |
Family
ID=37951711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002199466A Expired - Fee Related CA2199466C (fr) | 1994-09-13 | 1995-09-13 | Reseaux polymeres surperabsorbants |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2199466C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501327B (zh) * | 2020-06-03 | 2022-09-23 | 嘉兴学院 | pH敏感型纳米纤维水凝胶毡及其制备方法 |
-
1995
- 1995-09-13 CA CA002199466A patent/CA2199466C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2199466A1 (fr) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140915 |