NL8400148A - Werkwijze voor het zuiveren van polyethers en/of copolyethers met ten minste een beperkte oplosbaarheid in water. - Google Patents
Werkwijze voor het zuiveren van polyethers en/of copolyethers met ten minste een beperkte oplosbaarheid in water. Download PDFInfo
- Publication number
- NL8400148A NL8400148A NL8400148A NL8400148A NL8400148A NL 8400148 A NL8400148 A NL 8400148A NL 8400148 A NL8400148 A NL 8400148A NL 8400148 A NL8400148 A NL 8400148A NL 8400148 A NL8400148 A NL 8400148A
- Authority
- NL
- Netherlands
- Prior art keywords
- water
- acid
- polyethers
- copolyethers
- polyether
- Prior art date
Links
- 229920000570 polyether Polymers 0.000 title claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 27
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 23
- 150000002500 ions Chemical class 0.000 claims description 22
- 239000002253 acid Substances 0.000 claims description 21
- 239000003054 catalyst Substances 0.000 claims description 16
- 235000011007 phosphoric acid Nutrition 0.000 claims description 14
- 238000000746 purification Methods 0.000 claims description 14
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 12
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 150000007513 acids Chemical class 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 235000005985 organic acids Nutrition 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002594 sorbent Substances 0.000 claims description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 26
- 239000000047 product Substances 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- -1 alkali metal salts Chemical class 0.000 description 11
- 239000011734 sodium Substances 0.000 description 11
- 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 10
- 229910052783 alkali metal Inorganic materials 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 150000002009 diols Chemical class 0.000 description 8
- 229920005862 polyol Polymers 0.000 description 8
- 150000003077 polyols Chemical class 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 8
- 239000004814 polyurethane Substances 0.000 description 8
- 229910052708 sodium Inorganic materials 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 5
- 229910052700 potassium Chemical class 0.000 description 5
- 239000011591 potassium Chemical class 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical class [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 150000004679 hydroxides Chemical class 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000002242 deionisation method Methods 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 229940052303 ethers for general anesthesia Drugs 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- 159000000001 potassium salts Chemical class 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000605112 Scapanulus oweni Species 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000001632 acidimetric titration Methods 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Natural products CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 229960004132 diethyl ether Drugs 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- XLSMFKSTNGKWQX-UHFFFAOYSA-N hydroxyacetone Chemical compound CC(=O)CO XLSMFKSTNGKWQX-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 235000012243 magnesium silicates Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- DJEHXEMURTVAOE-UHFFFAOYSA-M potassium bisulfite Chemical compound [K+].OS([O-])=O DJEHXEMURTVAOE-UHFFFAOYSA-M 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 235000010259 potassium hydrogen sulphite Nutrition 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 1
- 229910000342 sodium bisulfate Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 1
- 235000019798 tripotassium phosphate Nutrition 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
Classifications
-
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS83422A CS241409B1 (en) | 1983-01-21 | 1983-01-21 | Method of water/soluble polyerthers' and/or copolyethers' refining or at least limitation |
| CS42283 | 1983-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8400148A true NL8400148A (nl) | 1984-08-16 |
Family
ID=5336253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8400148A NL8400148A (nl) | 1983-01-21 | 1984-01-17 | Werkwijze voor het zuiveren van polyethers en/of copolyethers met ten minste een beperkte oplosbaarheid in water. |
Country Status (8)
| Country | Link |
|---|---|
| CS (1) | CS241409B1 (el) |
| DD (1) | DD252955A3 (el) |
| DE (1) | DE3401780A1 (el) |
| FR (1) | FR2539747A3 (el) |
| GB (1) | GB2135322B (el) |
| HU (1) | HU193001B (el) |
| IT (1) | IT1173079B (el) |
| NL (1) | NL8400148A (el) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4985551A (en) * | 1988-12-29 | 1991-01-15 | Basf Corporation | Process for purification of catalysts from polyols using ion exchange resins |
| ES2058048T3 (es) * | 1992-03-24 | 1999-06-16 | Dow Chemical Co | Nuevo procedimiento de acabado para polieteres hidroxi-funcionales. |
| ES2100120B1 (es) * | 1994-07-12 | 1998-04-01 | Repsol Quimica Sa | Procedimiento discontinuo de intercambio ionico para la purificacion de los polioles polieteres brutos. |
| PL191594B1 (pl) * | 2000-01-18 | 2006-06-30 | Wojciech Balcerowiak | Sposób otrzymywania komponentów pakietu dodatków do paliw silnikowych |
| DE10024313A1 (de) * | 2000-05-17 | 2001-11-22 | Basf Ag | Verfahren zur Abtrennung von Alkalimetallionen aus Alkoxylaten |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE547702A (el) * | 1956-05-25 | |||
| NL229031A (el) * | 1957-06-27 | |||
| GB870457A (en) * | 1957-12-23 | 1961-06-14 | Shell Res Ltd | Improvements in and relating to the preparation of polyoxyalkylene compounds |
| US3016404A (en) * | 1959-09-28 | 1962-01-09 | Allied Chem | Purification of crude alkylene oxide polyether |
| GB892557A (en) * | 1959-12-31 | 1962-03-28 | Ici Ltd | Purification process |
| GB916552A (en) * | 1960-04-01 | 1963-01-23 | Ici Ltd | Purification of polyethers |
| GB1054337A (el) * | 1963-07-11 | |||
| US3299151A (en) * | 1963-10-08 | 1967-01-17 | Pittsburgh Plate Glass Co | Preparation of polyether polyols |
| GB1116501A (en) * | 1965-01-21 | 1968-06-06 | Ici Ltd | Process for the purification of polyethers |
| US3742069A (en) * | 1970-07-06 | 1973-06-26 | Ici America Inc | Purification of polyglycerols |
| GB1377486A (en) * | 1971-02-16 | 1974-12-18 | Ici Ltd | Polyether purification process |
| DE2854541A1 (de) * | 1978-12-16 | 1980-06-26 | Bayer Ag | Verfahren zur reinigung nichtionischer emulgatoren |
| DE3016113A1 (de) * | 1980-04-25 | 1981-10-29 | Bayer Ag, 5090 Leverkusen | Verfahren zur aufarbeitung von polyetherpolyolen |
| DE3016112A1 (de) * | 1980-04-25 | 1981-11-05 | Bayer Ag, 5090 Leverkusen | Verfahren zur aufarbeitung von polyetherpolyolen |
| JPS5770124A (en) * | 1980-10-20 | 1982-04-30 | Dai Ichi Kogyo Seiyaku Co Ltd | Purification of polyether-polyol |
| DE3107449A1 (de) * | 1981-02-27 | 1982-09-16 | Basf Ag, 6700 Ludwigshafen | Verfahren zur reinigung von polytetramethylenetherglykolen |
-
1983
- 1983-01-21 CS CS83422A patent/CS241409B1/cs unknown
-
1984
- 1984-01-17 NL NL8400148A patent/NL8400148A/nl not_active Application Discontinuation
- 1984-01-19 DE DE19843401780 patent/DE3401780A1/de not_active Withdrawn
- 1984-01-19 HU HU84206A patent/HU193001B/hu unknown
- 1984-01-19 IT IT19236/84A patent/IT1173079B/it active
- 1984-01-20 GB GB08401542A patent/GB2135322B/en not_active Expired
- 1984-01-20 FR FR8400870A patent/FR2539747A3/fr active Granted
- 1984-01-27 DD DD84259654A patent/DD252955A3/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2539747A3 (fr) | 1984-07-27 |
| HUT34047A (en) | 1985-01-28 |
| DD252955A3 (de) | 1988-01-06 |
| GB2135322B (en) | 1987-09-30 |
| GB8401542D0 (en) | 1984-02-22 |
| IT8419236A0 (it) | 1984-01-19 |
| CS42283A1 (en) | 1985-08-15 |
| IT1173079B (it) | 1987-06-18 |
| DE3401780A1 (de) | 1984-07-26 |
| HU193001B (en) | 1987-08-28 |
| FR2539747B3 (el) | 1984-12-21 |
| GB2135322A (en) | 1984-08-30 |
| CS241409B1 (en) | 1986-03-13 |
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