CN102807791A - 制备非常低粘度的纤维素醚的方法和产品 - Google Patents
制备非常低粘度的纤维素醚的方法和产品 Download PDFInfo
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- CN102807791A CN102807791A CN2012102372086A CN201210237208A CN102807791A CN 102807791 A CN102807791 A CN 102807791A CN 2012102372086 A CN2012102372086 A CN 2012102372086A CN 201210237208 A CN201210237208 A CN 201210237208A CN 102807791 A CN102807791 A CN 102807791A
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- ether
- cellulose
- weight
- viscosity
- coating
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- Granted
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- 238000000034 method Methods 0.000 title claims abstract description 74
- 229920003086 cellulose ether Polymers 0.000 title claims abstract description 40
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 328
- 241001550224 Apha Species 0.000 claims abstract 2
- 229920002678 cellulose Polymers 0.000 claims description 162
- 239000001913 cellulose Substances 0.000 claims description 162
- 239000011248 coating agent Substances 0.000 claims description 47
- 238000000576 coating method Methods 0.000 claims description 47
- 239000000463 material Substances 0.000 claims description 42
- 239000007864 aqueous solution Substances 0.000 claims description 41
- 239000000243 solution Substances 0.000 claims description 32
- 239000008199 coating composition Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 abstract description 60
- 239000002253 acid Substances 0.000 abstract description 36
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 238000002845 discoloration Methods 0.000 abstract 1
- 239000002585 base Substances 0.000 description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 230000003472 neutralizing effect Effects 0.000 description 17
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 16
- 239000003795 chemical substances by application Substances 0.000 description 16
- 239000000047 product Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 10
- 229920003091 Methocel™ Polymers 0.000 description 9
- 238000012691 depolymerization reaction Methods 0.000 description 9
- 238000005562 fading Methods 0.000 description 9
- 238000005507 spraying Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 description 8
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 229920013820 alkyl cellulose Polymers 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000006386 neutralization reaction Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 229920000609 methyl cellulose Polymers 0.000 description 5
- 239000001923 methylcellulose Substances 0.000 description 5
- 235000010981 methylcellulose Nutrition 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 4
- -1 Type 3U Chemical compound 0.000 description 4
- 150000002170 ethers Chemical class 0.000 description 4
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 4
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003826 tablet Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 2
- 229920003102 Methocel™ E4M Polymers 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007888 film coating Substances 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009492 tablet coating Methods 0.000 description 2
- 239000002700 tablet coating Substances 0.000 description 2
- RPZANUYHRMRTTE-UHFFFAOYSA-N 2,3,4-trimethoxy-6-(methoxymethyl)-5-[3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxyoxane;1-[[3,4,5-tris(2-hydroxybutoxy)-6-[4,5,6-tris(2-hydroxybutoxy)-2-(2-hydroxybutoxymethyl)oxan-3-yl]oxyoxan-2-yl]methoxy]butan-2-ol Chemical compound COC1C(OC)C(OC)C(COC)OC1OC1C(OC)C(OC)C(OC)OC1COC.CCC(O)COC1C(OCC(O)CC)C(OCC(O)CC)C(COCC(O)CC)OC1OC1C(OCC(O)CC)C(OCC(O)CC)C(OCC(O)CC)OC1COCC(O)CC RPZANUYHRMRTTE-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 101100136092 Drosophila melanogaster peng gene Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 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 1
- 206010023126 Jaundice Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000015872 dietary supplement Nutrition 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 229910000397 disodium phosphate Inorganic materials 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 229910052811 halogen oxide Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007937 lozenge Substances 0.000 description 1
- 229920003087 methylethyl cellulose Polymers 0.000 description 1
- 229940045641 monobasic sodium phosphate Drugs 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000000820 nonprescription drug Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000008177 pharmaceutical agent Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000004627 transmission electron microscopy Methods 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/26—Cellulose ethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/26—Cellulose ethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/26—Cellulose ethers
- C09D101/28—Alkyl ethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
- C09D101/08—Cellulose derivatives
- C09D101/26—Cellulose ethers
- C09D101/28—Alkyl ethers
- C09D101/284—Alkyl ethers with hydroxylated hydrocarbon radicals
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Wood Science & Technology (AREA)
- Biochemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Medicinal Preparation (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US98668607P | 2007-11-09 | 2007-11-09 | |
US60/986,686 | 2007-11-09 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN200880115113.9A Division CN101855247B (zh) | 2007-11-09 | 2008-11-05 | 制备非常低粘度的纤维素醚的方法和产品 |
Publications (2)
Publication Number | Publication Date |
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CN102807791A true CN102807791A (zh) | 2012-12-05 |
CN102807791B CN102807791B (zh) | 2014-10-15 |
Family
ID=40254480
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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CN200880115113.9A Active CN101855247B (zh) | 2007-11-09 | 2008-11-05 | 制备非常低粘度的纤维素醚的方法和产品 |
CN201210237208.6A Active CN102807791B (zh) | 2007-11-09 | 2008-11-05 | 制备非常低粘度的纤维素醚的方法和产品 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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CN200880115113.9A Active CN101855247B (zh) | 2007-11-09 | 2008-11-05 | 制备非常低粘度的纤维素醚的方法和产品 |
Country Status (7)
Country | Link |
---|---|
US (2) | US8920554B2 (zh) |
EP (1) | EP2209811B1 (zh) |
JP (1) | JP5596552B2 (zh) |
KR (1) | KR101597992B1 (zh) |
CN (2) | CN101855247B (zh) |
MX (1) | MX2010004931A (zh) |
WO (1) | WO2009061815A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114380923A (zh) * | 2020-10-22 | 2022-04-22 | 信越化学工业株式会社 | 用于生产解聚的纤维素醚的方法 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101556517B1 (ko) | 2007-11-09 | 2015-10-01 | 다우 글로벌 테크놀로지스 엘엘씨 | 셀룰로스 에테르 피복 조성물 및 방법 |
TWI483749B (zh) * | 2010-12-03 | 2015-05-11 | Nippon Soda Co | 羥烷基纖維素 |
JP5717424B2 (ja) * | 2010-12-03 | 2015-05-13 | 学校法人神戸学院 | コーティング粒子 |
EP2875072B1 (en) | 2012-07-17 | 2017-03-15 | Dow Global Technologies LLC | Composition comprising an organic liquid diluent and a cellulose ether of very low viscosity |
KR101971738B1 (ko) * | 2012-12-11 | 2019-04-23 | 롯데정밀화학 주식회사 | 부분 중화법을 통한 초저점도 히드록시알킬 셀룰로오스의 제조방법 |
KR101586136B1 (ko) * | 2013-01-09 | 2016-01-15 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 저중합도 셀룰로오스에테르의 제조 방법 및 이에 따라 제조된 셀룰로오스에테르 |
WO2014137789A1 (en) * | 2013-03-07 | 2014-09-12 | Dow Global Technologies Llc | Novel esterified cellulose ethers of low viscosity and high molecular weight |
KR102194967B1 (ko) | 2013-03-07 | 2020-12-24 | 다우 글로벌 테크놀로지스 엘엘씨 | 초고분자량의 신규한 에스테르화된 셀룰로스 에테르 |
US9486532B2 (en) | 2013-03-07 | 2016-11-08 | Dow Global Technologies Llc | Esterified cellulose ethers of low viscosity |
BR112015015846A2 (pt) | 2013-03-07 | 2017-07-11 | Dow Global Technologies Llc | éter de celulose esterificado, composição, dispersão sólida, forma de dosagem, invólucro de cápsula e processo para produzir um éter de celulose esterificado |
EP2997046B1 (en) | 2013-05-14 | 2019-09-25 | Dow Global Technologies LLC | Cellulose ethers esterified with dicarboxylic acids |
KR102049872B1 (ko) * | 2013-08-28 | 2019-11-29 | 롯데정밀화학 주식회사 | 셀룰로오스 에테르의 제조 방법 |
US20170335019A1 (en) * | 2014-10-31 | 2017-11-23 | Dow Global Technologies Llc | Process for preparing an ester of a cellulose ether |
EP3212673B1 (en) * | 2014-10-31 | 2018-09-12 | Dow Global Technologies LLC | Process for producing a cellulose ether acetate succinate |
WO2016069343A1 (en) * | 2014-10-31 | 2016-05-06 | Dow Global Technologies Llc | Efficient process for preparing an ester of a cellulose ether |
CN107406521B (zh) * | 2015-03-16 | 2019-04-05 | 陶氏环球技术有限责任公司 | 用于在脂肪族羧酸存在下制备酯化纤维素醚的方法 |
EP3668901B1 (en) * | 2017-08-16 | 2021-05-05 | Nutrition & Biosciences USA 1, LLC | Method for controlled preparation of low molecular weight cellulose ether |
DE102017223690A1 (de) | 2017-12-22 | 2019-06-27 | Se Tylose Gmbh & Co. Kg | Oxidativer Abbau von Celluloseethern |
CN109021119A (zh) * | 2018-06-14 | 2018-12-18 | 恒达亲水胶体泰州有限公司 | 一种用于热升华转印纸用的羧甲基纤维素钠的制备方法 |
CN109627346A (zh) * | 2018-12-06 | 2019-04-16 | 泸州北方纤维素有限公司 | 稳定性良好的超低粘度乙基纤维素及其制备方法 |
CN115572107B (zh) * | 2022-11-11 | 2024-01-19 | 亚士创能新材料(滁州)有限公司 | 耐温变施工的真石漆及其制备方法、应用 |
KR102637627B1 (ko) * | 2023-11-24 | 2024-02-19 | 디케이화인케미칼 주식회사 | 의료의약용 셀룰로오스 제조방법 및 그에 의하여 제조되는 의료의약용 셀룰로오스 |
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WO2002003967A1 (en) * | 2000-07-07 | 2002-01-17 | Societe D'exploitation De Produits Pour Les Industries Chimiques (S.E.P.P.I.C.) | Film-coating composition based on cellulose derivatives and sugar alcohols |
CN1334822A (zh) * | 1998-11-27 | 2002-02-06 | 沃尔夫瓦尔斯罗德有限公司 | 制备低粘性水溶性的纤维素醚的方法 |
CN1490336A (zh) * | 2002-10-14 | 2004-04-21 | 中国科学院成都有机化学研究所 | 一种超低粘度羧甲基纤维素及其制备方法 |
US20040242862A1 (en) * | 2001-08-25 | 2004-12-02 | Alf Hammes | Method for producing a cellulose ether of low viscosity by means of acid oxidative decomposition of ground and dried cellulose ethers |
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EP0384573A1 (en) * | 1989-01-23 | 1990-08-29 | The Dow Chemical Company | Removal of color material from water-soluble polymer solutions |
US4988807A (en) | 1989-01-23 | 1991-01-29 | The Dow Chemical Company | Removal of undesirable material from water-soluble polysaccharide ethers |
FR2643556B1 (fr) * | 1989-02-27 | 1993-03-05 | Sanofi Sa | Composition pharmaceutique a liberation prolongee d'acide valproique |
US5218107A (en) | 1991-12-30 | 1993-06-08 | The Dow Chemical Company | Removal of undesirable material from water-soluble cellulose ether aqueous solutions |
DE19941893A1 (de) * | 1999-09-03 | 2001-03-08 | Clariant Gmbh | Niederviskose, heisswasser-flockbare Celluloseether, Verfahren zu deren Herstellung durch Depolymerisation sowie deren Verwendung |
DE10117208A1 (de) * | 2001-04-06 | 2002-10-10 | Wolff Walsrode Ag | Verfahren zur Herstellung von niederviskosen, wässrigen Celluloseetherlösungen |
ATE519785T1 (de) * | 2006-06-14 | 2011-08-15 | Dow Global Technologies Llc | Verfahren zur verringerung des mittleren molekulargewichts von celluloseethern |
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2008
- 2008-11-05 US US12/741,771 patent/US8920554B2/en active Active
- 2008-11-05 CN CN200880115113.9A patent/CN101855247B/zh active Active
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- 2008-11-05 WO PCT/US2008/082477 patent/WO2009061815A1/en active Application Filing
- 2008-11-05 CN CN201210237208.6A patent/CN102807791B/zh active Active
- 2008-11-05 EP EP08848109.8A patent/EP2209811B1/en active Active
- 2008-11-05 KR KR1020107009919A patent/KR101597992B1/ko active Active
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CN1334822A (zh) * | 1998-11-27 | 2002-02-06 | 沃尔夫瓦尔斯罗德有限公司 | 制备低粘性水溶性的纤维素醚的方法 |
WO2002003967A1 (en) * | 2000-07-07 | 2002-01-17 | Societe D'exploitation De Produits Pour Les Industries Chimiques (S.E.P.P.I.C.) | Film-coating composition based on cellulose derivatives and sugar alcohols |
US20040242862A1 (en) * | 2001-08-25 | 2004-12-02 | Alf Hammes | Method for producing a cellulose ether of low viscosity by means of acid oxidative decomposition of ground and dried cellulose ethers |
CN1490336A (zh) * | 2002-10-14 | 2004-04-21 | 中国科学院成都有机化学研究所 | 一种超低粘度羧甲基纤维素及其制备方法 |
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CN114380923A (zh) * | 2020-10-22 | 2022-04-22 | 信越化学工业株式会社 | 用于生产解聚的纤维素醚的方法 |
CN114380923B (zh) * | 2020-10-22 | 2025-03-04 | 信越化学工业株式会社 | 用于生产解聚的纤维素醚的方法 |
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US20150059619A1 (en) | 2015-03-05 |
JP5596552B2 (ja) | 2014-09-24 |
US8920554B2 (en) | 2014-12-30 |
CN101855247A (zh) | 2010-10-06 |
EP2209811A1 (en) | 2010-07-28 |
US20100307379A1 (en) | 2010-12-09 |
CN101855247B (zh) | 2013-03-20 |
KR20100083812A (ko) | 2010-07-22 |
CN102807791B (zh) | 2014-10-15 |
JP2011503294A (ja) | 2011-01-27 |
WO2009061815A1 (en) | 2009-05-14 |
KR101597992B1 (ko) | 2016-02-26 |
MX2010004931A (es) | 2010-06-11 |
EP2209811B1 (en) | 2019-03-06 |
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