TW222617B - - Google Patents
Info
- Publication number
- TW222617B TW222617B TW082102217A TW82102217A TW222617B TW 222617 B TW222617 B TW 222617B TW 082102217 A TW082102217 A TW 082102217A TW 82102217 A TW82102217 A TW 82102217A TW 222617 B TW222617 B TW 222617B
- Authority
- TW
- Taiwan
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
- C01B7/195—Separation; Purification
- C01B7/196—Separation; Purification by distillation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/389—Separation; Purification; Stabilisation; Use of additives by adsorption on solids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22183392A JP3171685B2 (ja) | 1992-02-04 | 1992-08-20 | １，１，１，２テトラフルオロエタンの精製法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW222617B true TW222617B (US20050026921A1-20050203-C00045.png) | 1994-04-21 |
Family
ID=16772913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW082102217A TW222617B (US20050026921A1-20050203-C00045.png) | 1992-08-20 | 1993-03-24 |
Country Status (6)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470442A (en) * | 1994-03-11 | 1995-11-28 | E. I. Du Pont De Nemours And Company | Separating and removing impurities from tetrafluoroethanes by using extractive distillation |
| US5723429A (en) * | 1994-03-11 | 1998-03-03 | E. I. Du Pont De Nemours And Company | Azeotropic or azeotrope-like compositions of tetrafluoroethane and chlorotetrafluoroethane |
| GB9425063D0 (en) * | 1994-12-13 | 1995-02-08 | Ici Plc | Process for the recovery of a hydrfluoroalkane in the liquid phase |
| ES2155201T3 (es) | 1995-10-10 | 2001-05-01 | Ici Plc | Procedimiento para la recuperacion de fluoruro de hidrogeno. |
| US6001796A (en) * | 1996-07-03 | 1999-12-14 | Alliedsignal Inc. | Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride |
| WO1998000379A1 (en) * | 1996-07-03 | 1998-01-08 | Alliedsignal Inc. | Water extraction of hydrogen fluoride from a halocarbon/hydrogen fluoride azeotropic mixture |
| GB9707176D0 (en) | 1997-04-09 | 1997-05-28 | Ici Plc | Hydrogen fluoride recovery process |
| US6458249B2 (en) | 1997-11-10 | 2002-10-01 | E. I. Du Pont De Nemours And Company | Process for purifying perfluorinated products |
| DE10221113B4 (de) * | 2002-05-06 | 2013-04-04 | Fluorchemie Gmbh Frankfurt | Verfahren zur Herstellung hochreiner Flusssäure |
| US9309116B2 (en) * | 2011-09-26 | 2016-04-12 | Honeywell International Inc. | Method for producing high concentration aqueous HF solutions |
| CN104016305B (zh) * | 2014-05-26 | 2016-06-22 | 浙江衢化氟化学有限公司 | 一种从氢氟烃粗品中回收氟化氢的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2478362A (en) * | 1948-06-15 | 1949-08-09 | Kinetic Chemicals Inc | Distillation process for separating products of perchloro-ethylene fluorination |
| US4038332A (en) * | 1975-10-09 | 1977-07-26 | Phillips Petroleum Company | Separation of ethyl fluoride |
| US4911792A (en) * | 1988-08-01 | 1990-03-27 | E. I. Du Pont De Nemours And Company | Process for the separation of HF via phase separation and distillation |
| DE69031344D1 (de) * | 1989-10-04 | 1997-10-02 | Du Pont | Verfahren zur reinigung von fluorkohlenwasserstoffen |
| EP0542290A1 (de) * | 1991-11-15 | 1993-05-19 | Hoechst Aktiengesellschaft | Verfahren zur Trennung eines Gemischs, enthaltend Fluorwasserstoff und 1-Chlor-2,2,2-trifluorethan |
-
1993
- 1993-03-24 TW TW082102217A patent/TW222617B/zh not_active IP Right Cessation
- 1993-05-06 EP EP93107385A patent/EP0583551B1/en not_active Expired - Lifetime
- 1993-05-06 DE DE69304638T patent/DE69304638T2/de not_active Expired - Lifetime
- 1993-05-14 KR KR1019930008270A patent/KR100288458B1/ko not_active IP Right Cessation
- 1993-05-29 CN CN93106510A patent/CN1034167C/zh not_active Expired - Lifetime
-
1994
- 1994-03-23 US US08/216,780 patent/US5382724A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR940005531A (ko) | 1994-03-21 |
| KR100288458B1 (ko) | 2001-05-02 |
| DE69304638T2 (de) | 1997-04-17 |
| CN1034167C (zh) | 1997-03-05 |
| EP0583551B1 (en) | 1996-09-11 |
| CN1083037A (zh) | 1994-03-02 |
| EP0583551A1 (en) | 1994-02-23 |
| DE69304638D1 (de) | 1996-10-17 |
| US5382724A (en) | 1995-01-17 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK4A | Expiration of patent term of an invention patent |