DE69325905T2 - Verfahren zur herstellung von gereinigter terphthalsäure - Google Patents
Verfahren zur herstellung von gereinigter terphthalsäureInfo
- Publication number
- DE69325905T2 DE69325905T2 DE69325905T DE69325905T DE69325905T2 DE 69325905 T2 DE69325905 T2 DE 69325905T2 DE 69325905 T DE69325905 T DE 69325905T DE 69325905 T DE69325905 T DE 69325905T DE 69325905 T2 DE69325905 T2 DE 69325905T2
- Authority
- DE
- Germany
- Prior art keywords
- cta
- steam
- mixture
- aqueous
- pta
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 16
- 239000002253 acid Substances 0.000 title 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 160
- 238000000034 method Methods 0.000 claims abstract description 50
- 230000008569 process Effects 0.000 claims abstract description 49
- 238000002425 crystallisation Methods 0.000 claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 239000012736 aqueous medium Substances 0.000 claims abstract description 21
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 10
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 claims description 98
- 230000008025 crystallization Effects 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000002002 slurry Substances 0.000 claims description 29
- 239000000243 solution Substances 0.000 claims description 28
- GOUHYARYYWKXHS-UHFFFAOYSA-N 4-formylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=O)C=C1 GOUHYARYYWKXHS-UHFFFAOYSA-N 0.000 claims description 22
- 239000012452 mother liquor Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 16
- 238000005984 hydrogenation reaction Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000007864 aqueous solution Substances 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 21
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 18
- 238000000746 purification Methods 0.000 description 13
- 239000007791 liquid phase Substances 0.000 description 12
- 230000009467 reduction Effects 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 230000008020 evaporation Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 5
- 238000004821 distillation Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000012429 reaction media Substances 0.000 description 4
- 239000012808 vapor phase Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229920001283 Polyalkylene terephthalate Polymers 0.000 description 2
- 239000007900 aqueous suspension Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 239000002638 heterogeneous catalyst Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929211415A GB9211415D0 (en) | 1992-05-29 | 1992-05-29 | Process for the production of purified terephthalic acid |
| PCT/GB1993/001033 WO1993024441A1 (en) | 1992-05-29 | 1993-05-20 | Process for the production of purified terephthalic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69325905D1 DE69325905D1 (de) | 1999-09-09 |
| DE69325905T2 true DE69325905T2 (de) | 2000-03-30 |
Family
ID=10716228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69325905T Expired - Lifetime DE69325905T2 (de) | 1992-05-29 | 1993-05-20 | Verfahren zur herstellung von gereinigter terphthalsäure |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0642491B1 (OSRAM) |
| JP (1) | JPH07507292A (OSRAM) |
| CN (1) | CN1039315C (OSRAM) |
| AT (1) | ATE182877T1 (OSRAM) |
| AU (1) | AU668725B2 (OSRAM) |
| BR (1) | BR9306418A (OSRAM) |
| CA (1) | CA2134873A1 (OSRAM) |
| DE (1) | DE69325905T2 (OSRAM) |
| ES (1) | ES2136661T3 (OSRAM) |
| GB (2) | GB9211415D0 (OSRAM) |
| IN (1) | IN186258B (OSRAM) |
| RU (1) | RU94046087A (OSRAM) |
| WO (1) | WO1993024441A1 (OSRAM) |
| ZA (1) | ZA933572B (OSRAM) |
Families Citing this family (64)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5602187A (en) * | 1992-05-18 | 1997-02-11 | Swig Pty Ltd. | Polyethylene terephthalate decontamination |
| US5504121A (en) * | 1992-05-18 | 1996-04-02 | Swig Pty Ltd. | Polyethylene terephthalate decontamination |
| US5922775A (en) * | 1997-10-23 | 1999-07-13 | Octamer, Inc. | Method of treating malignant tumors with ketone thyroxine analogues having no significant hormonal activity |
| AU2003292831A1 (en) * | 2003-01-08 | 2004-08-10 | Mitsubishi Chemical Corporation | Method for producing high purity terephthalic acid |
| US7351396B2 (en) | 2003-06-05 | 2008-04-01 | Eastman Chemical Company | Extraction process for removal of impurities from an aqueous mixture |
| US7410632B2 (en) | 2003-06-05 | 2008-08-12 | Eastman Chemical Company | Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
| US7494641B2 (en) | 2003-06-05 | 2009-02-24 | Eastman Chemical Company | Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid |
| US7452522B2 (en) | 2003-06-05 | 2008-11-18 | Eastman Chemical Company | Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid |
| US7282151B2 (en) | 2003-06-05 | 2007-10-16 | Eastman Chemical Company | Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration |
| US7381386B2 (en) | 2003-06-05 | 2008-06-03 | Eastman Chemical Company | Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
| WO2006001449A1 (ja) * | 2004-06-28 | 2006-01-05 | Mitsubishi Chemical Corporation | 高純度テレフタル酸の製造方法 |
| US7683210B2 (en) | 2004-09-02 | 2010-03-23 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7897810B2 (en) | 2004-09-02 | 2011-03-01 | Eastman Chemical Company | Optimized production of aromatic dicarboxylic acids |
| US7371894B2 (en) | 2004-09-02 | 2008-05-13 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US20070238899A9 (en) | 2004-09-02 | 2007-10-11 | Robert Lin | Optimized production of aromatic dicarboxylic acids |
| JP2008511653A (ja) * | 2004-09-02 | 2008-04-17 | イーストマン ケミカル カンパニー | 芳香族ジカルボン酸の最適化製造 |
| US7563926B2 (en) | 2004-09-02 | 2009-07-21 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7568361B2 (en) | 2004-09-02 | 2009-08-04 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7608732B2 (en) | 2005-03-08 | 2009-10-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7582793B2 (en) | 2004-09-02 | 2009-09-01 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| CN102600770B (zh) * | 2004-09-02 | 2015-08-19 | 奇派特石化有限公司 | 芳族二羧酸的优化制备 |
| US7888530B2 (en) | 2004-09-02 | 2011-02-15 | Eastman Chemical Company | Optimized production of aromatic dicarboxylic acids |
| US7507857B2 (en) | 2004-09-02 | 2009-03-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7572936B2 (en) | 2004-09-02 | 2009-08-11 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7692036B2 (en) | 2004-11-29 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7399882B2 (en) | 2004-09-02 | 2008-07-15 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7390921B2 (en) | 2004-09-02 | 2008-06-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7572932B2 (en) | 2004-09-02 | 2009-08-11 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7504535B2 (en) | 2004-09-02 | 2009-03-17 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7741515B2 (en) | 2004-09-02 | 2010-06-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7495125B2 (en) | 2004-09-02 | 2009-02-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7381836B2 (en) | 2004-09-02 | 2008-06-03 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7589231B2 (en) | 2004-09-02 | 2009-09-15 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7586000B2 (en) | 2004-09-02 | 2009-09-08 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7482482B2 (en) | 2004-09-02 | 2009-01-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7692037B2 (en) | 2004-09-02 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7608733B2 (en) | 2004-09-02 | 2009-10-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7291270B2 (en) | 2004-10-28 | 2007-11-06 | Eastman Chemical Company | Process for removal of impurities from an oxidizer purge stream |
| US7273559B2 (en) | 2004-10-28 | 2007-09-25 | Eastman Chemical Company | Process for removal of impurities from an oxidizer purge stream |
| US7884231B2 (en) | 2005-05-19 | 2011-02-08 | Eastman Chemical Company | Process to produce an enriched composition |
| US7432395B2 (en) | 2005-05-19 | 2008-10-07 | Eastman Chemical Company | Enriched carboxylic acid composition |
| US7557243B2 (en) | 2005-05-19 | 2009-07-07 | Eastman Chemical Company | Enriched terephthalic acid composition |
| US7919652B2 (en) | 2005-05-19 | 2011-04-05 | Eastman Chemical Company | Process to produce an enriched composition through the use of a catalyst removal zone and an enrichment zone |
| US7897809B2 (en) | 2005-05-19 | 2011-03-01 | Eastman Chemical Company | Process to produce an enrichment feed |
| US7834208B2 (en) | 2005-05-19 | 2010-11-16 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
| US7304178B2 (en) | 2005-05-19 | 2007-12-04 | Eastman Chemical Company | Enriched isophthalic acid composition |
| US7741516B2 (en) | 2005-05-19 | 2010-06-22 | Eastman Chemical Company | Process to enrich a carboxylic acid composition |
| US7880031B2 (en) | 2005-05-19 | 2011-02-01 | Eastman Chemical Company | Process to produce an enrichment feed |
| US7884232B2 (en) | 2005-06-16 | 2011-02-08 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7402694B2 (en) | 2005-08-11 | 2008-07-22 | Eastman Chemical Company | Process for removal of benzoic acid from an oxidizer purge stream |
| US7569722B2 (en) | 2005-08-11 | 2009-08-04 | Eastman Chemical Company | Process for removal of benzoic acid from an oxidizer purge stream |
| US7358389B2 (en) | 2006-01-04 | 2008-04-15 | Eastman Chemical Company | Oxidation system employing internal structure for enhanced hydrodynamics |
| US7355068B2 (en) | 2006-01-04 | 2008-04-08 | Eastman Chemical Company | Oxidation system with internal secondary reactor |
| US7863481B2 (en) | 2006-03-01 | 2011-01-04 | Eastman Chemical Company | Versatile oxidation byproduct purge process |
| US20070203359A1 (en) | 2006-03-01 | 2007-08-30 | Philip Edward Gibson | Versatile oxidation byproduct purge process |
| US7897808B2 (en) | 2006-03-01 | 2011-03-01 | Eastman Chemical Company | Versatile oxidation byproduct purge process |
| US7880032B2 (en) | 2006-03-01 | 2011-02-01 | Eastman Chemical Company | Versatile oxidation byproduct purge process |
| US7888529B2 (en) | 2006-03-01 | 2011-02-15 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
| CN102203042A (zh) * | 2008-10-31 | 2011-09-28 | 英威达技术有限公司 | 改进的纯羧酸过滤 |
| GB201016049D0 (en) * | 2010-09-24 | 2010-11-10 | Davy Process Techn Ltd | Process and system |
| CN103121940B (zh) * | 2011-11-18 | 2015-11-18 | 中国石油化工股份有限公司 | 加氢处理粗间苯二甲酸方法 |
| DE102012007675A1 (de) * | 2012-04-17 | 2013-10-17 | BOKELA Ingenieurgesellschaft für mechanische Verfahrenstechnik mbH | Verfahren und Anlage zum Herstellen von TA(Terephtalsäure) |
| KR102185028B1 (ko) | 2013-12-30 | 2020-12-01 | 비피 코포레이션 노쓰 아메리카 인코포레이티드 | 방향족 카르복실산의 정제 |
| JP6564381B2 (ja) | 2013-12-31 | 2019-08-21 | ビーピー・コーポレーション・ノース・アメリカ・インコーポレーテッド | 精製芳香族カルボン酸の製造における高圧の凝縮物の生成 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3522298A (en) * | 1966-03-30 | 1970-07-28 | Mobil Oil Corp | Terephthalic acid purification process |
| DE2601431A1 (de) * | 1976-01-16 | 1977-07-21 | Wiegand Karlsruhe Gmbh | Direkt-dampf-injektionsgeraet |
| US4405809A (en) * | 1981-12-04 | 1983-09-20 | Standard Oil Company (Indiana) | Process for the manufacture of aromatic polycarboxylic acids having delta Y values below ten |
| US4500732A (en) * | 1983-09-15 | 1985-02-19 | Standard Oil Company (Indiana) | Process for removal and recycle of p-toluic acid from terephthalic acid crystallizer solvent |
-
1992
- 1992-05-29 GB GB929211415A patent/GB9211415D0/en active Pending
-
1993
- 1993-05-17 GB GB939310094A patent/GB9310094D0/en active Pending
- 1993-05-20 AT AT93910240T patent/ATE182877T1/de active
- 1993-05-20 IN IN521DE1993 patent/IN186258B/en unknown
- 1993-05-20 ES ES93910240T patent/ES2136661T3/es not_active Expired - Lifetime
- 1993-05-20 AU AU40825/93A patent/AU668725B2/en not_active Ceased
- 1993-05-20 BR BR9306418A patent/BR9306418A/pt not_active Application Discontinuation
- 1993-05-20 JP JP6500293A patent/JPH07507292A/ja active Pending
- 1993-05-20 RU RU94046087/04A patent/RU94046087A/ru unknown
- 1993-05-20 WO PCT/GB1993/001033 patent/WO1993024441A1/en not_active Ceased
- 1993-05-20 CA CA002134873A patent/CA2134873A1/en not_active Abandoned
- 1993-05-20 EP EP93910240A patent/EP0642491B1/en not_active Expired - Lifetime
- 1993-05-20 DE DE69325905T patent/DE69325905T2/de not_active Expired - Lifetime
- 1993-05-21 ZA ZA933572A patent/ZA933572B/xx unknown
- 1993-05-29 CN CN93108224A patent/CN1039315C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB9211415D0 (en) | 1992-07-15 |
| GB9310094D0 (en) | 1993-06-30 |
| CN1039315C (zh) | 1998-07-29 |
| CN1085891A (zh) | 1994-04-27 |
| AU668725B2 (en) | 1996-05-16 |
| EP0642491A1 (en) | 1995-03-15 |
| AU4082593A (en) | 1993-12-30 |
| ATE182877T1 (de) | 1999-08-15 |
| RU94046087A (ru) | 1996-09-27 |
| IN186258B (OSRAM) | 2001-07-21 |
| WO1993024441A1 (en) | 1993-12-09 |
| ES2136661T3 (es) | 1999-12-01 |
| BR9306418A (pt) | 1998-09-15 |
| JPH07507292A (ja) | 1995-08-10 |
| DE69325905D1 (de) | 1999-09-09 |
| CA2134873A1 (en) | 1993-12-09 |
| ZA933572B (en) | 1994-02-14 |
| EP0642491B1 (en) | 1999-08-04 |
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