CN1103860A - 制备高度纯化的苯二羧酸异构物的方法 - Google Patents
制备高度纯化的苯二羧酸异构物的方法 Download PDFInfo
- Publication number
- CN1103860A CN1103860A CN94100679A CN94100679A CN1103860A CN 1103860 A CN1103860 A CN 1103860A CN 94100679 A CN94100679 A CN 94100679A CN 94100679 A CN94100679 A CN 94100679A CN 1103860 A CN1103860 A CN 1103860A
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- China
- Prior art keywords
- oxidation
- extraction
- block
- oxidation step
- reaction
- 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.)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
-
- 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
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/14—Monocyclic dicarboxylic acids
- C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
- C07C63/26—1,4 - Benzenedicarboxylic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims (19)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU93046191 | 1993-09-28 | ||
RU93046191/04A RU2047595C1 (ru) | 1993-09-28 | 1993-09-28 | Способ получения изомеров фталевых кислот с высокой степенью чистоты |
RU93046190/04A RU2047594C1 (ru) | 1993-09-28 | 1993-09-28 | Способ получения изомеров бензолдикарбоновых кислот с высокой степенью очистки |
RU93046190 | 1993-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1103860A true CN1103860A (zh) | 1995-06-21 |
CN1050118C CN1050118C (zh) | 2000-03-08 |
Family
ID=26653761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN94100679A Expired - Lifetime CN1050118C (zh) | 1993-09-28 | 1994-01-12 | 制备高度纯化的苯二羧酸异构物的方法 |
Country Status (21)
Country | Link |
---|---|
US (1) | US5359133A (zh) |
JP (1) | JP3009223B2 (zh) |
KR (1) | KR970000136B1 (zh) |
CN (1) | CN1050118C (zh) |
AU (1) | AU5576394A (zh) |
BE (1) | BE1008546A4 (zh) |
BG (1) | BG62324B1 (zh) |
BR (1) | BR9305996A (zh) |
CA (1) | CA2128719C (zh) |
DE (2) | DE4397599T1 (zh) |
ES (1) | ES2081265B1 (zh) |
FR (1) | FR2710638B1 (zh) |
GB (1) | GB2286588B (zh) |
IT (1) | IT1271011B (zh) |
MY (1) | MY108978A (zh) |
PL (1) | PL175685B1 (zh) |
RO (1) | RO113850B1 (zh) |
SA (1) | SA94140587B1 (zh) |
SK (1) | SK280582B6 (zh) |
TW (1) | TW307753B (zh) |
WO (1) | WO1995009143A1 (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1310866C (zh) * | 2002-12-09 | 2007-04-18 | 伊斯曼化学公司 | 对苯二甲酸的氧化提纯方法 |
CN1310867C (zh) * | 2002-12-09 | 2007-04-18 | 伊斯曼化学公司 | 对苯二甲酸的氧化纯化方法 |
CN104892391A (zh) * | 2006-03-01 | 2015-09-09 | 奇派特石化有限公司 | 使用氧化蒸煮下游的热液体取出的多元羧酸生产系统 |
CN105130782A (zh) * | 2006-03-01 | 2015-12-09 | 奇派特石化有限公司 | 使用来自氧化蒸煮的冷却的母液作为杂质吹洗系统的进料的多元羧酸生产系统 |
CN105579428A (zh) * | 2013-09-24 | 2016-05-11 | 伊士曼化工公司 | 生产对苯二甲酸的方法 |
Families Citing this family (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5929274A (en) * | 1995-06-07 | 1999-07-27 | Hfm International, Inc. | Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid |
WO1996041790A1 (fr) * | 1995-06-08 | 1996-12-27 | Mogilev Order Of Lenin Proizvodstvennoe Obiedinenie 'khimvolokno' Named After V.I. Lenin | Processus de production d'acide isophtalique de purete monomerique |
JP3757995B2 (ja) * | 1996-07-12 | 2006-03-22 | 三菱瓦斯化学株式会社 | 高純度イソフタル酸の製造方法 |
JP3341620B2 (ja) * | 1997-03-19 | 2002-11-05 | 株式会社日立製作所 | 芳香族ポリカルボン酸の製造方法および装置 |
KR20000041506A (ko) * | 1998-12-22 | 2000-07-15 | 유현식 | 아로마틱폴리카본산의 제조방법 |
US6180822B1 (en) | 1998-12-22 | 2001-01-30 | Samsung General Chemical Co., Ltd. | Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic compounds or partially oxidized intermediates thereof with carbon dioxide containing gas |
KR100549107B1 (ko) * | 1999-04-28 | 2006-02-06 | 삼성토탈 주식회사 | 아로마틱 폴리카본산의 제조방법 |
US6194607B1 (en) | 1998-12-22 | 2001-02-27 | Samsung General Chemicals Co., Ltd. | Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic hydrocarbons or partially oxidized intermediates thereof |
US6465685B1 (en) | 1999-11-24 | 2002-10-15 | General Electric Company | Method for oxidation of xylene derivatives |
US6399790B1 (en) | 1999-11-24 | 2002-06-04 | General Electric Company | Method for oxidation of xylene derivatives |
WO2001053245A1 (en) | 2000-01-18 | 2001-07-26 | Inca International S.P.A. | Oxidation of alkyl aromatic compounds to aromatic acids in an aqueous medium |
US6657067B2 (en) | 2002-03-22 | 2003-12-02 | General Electric Company | Method for the manufacture of chlorophthalic anhydride |
US6649773B2 (en) | 2002-03-22 | 2003-11-18 | General Electric Company | Method for the manufacture of halophthalic acids and anhydrides |
US6657068B2 (en) | 2002-03-22 | 2003-12-02 | General Electric Company | Liquid phase oxidation of halogenated ortho-xylenes |
KR101004217B1 (ko) * | 2002-12-09 | 2010-12-24 | 이스트만 케미칼 컴파니 | 테레프탈산의 산화적 정제 방법 |
MXPA05005979A (es) * | 2002-12-09 | 2005-08-18 | Eastman Chem Co | Proceso para la purificacion oxidativa de acido tereftalico. |
US7132566B2 (en) * | 2003-09-22 | 2006-11-07 | Eastman Chemical Company | Process for the purification of a crude carboxylic acid slurry |
WO2004052820A1 (en) * | 2002-12-09 | 2004-06-24 | Eastman Chemical Company | Process for the purification of a crude carboxylic acid slurry |
US7546747B2 (en) * | 2004-01-15 | 2009-06-16 | Eastman Chemical Company | Process for production of a dried carboxylic acid cake suitable for use in polyester production |
US7348452B2 (en) * | 2004-04-22 | 2008-03-25 | Eastman Chemical Company | Liquid phase oxidation of P-xylene to terephthalic acid in the presence of a catalyst system containing nickel, manganese, and bromine atoms |
US20050283022A1 (en) * | 2004-06-18 | 2005-12-22 | Sheppard Ronald B | Filtrate preparation process for terephthalic acid filtrate treatment |
US7541489B2 (en) | 2004-06-30 | 2009-06-02 | Sabic Innovative Plastics Ip B.V. | Method of making halophthalic acids and halophthalic anhydrides |
US7910769B2 (en) | 2004-09-02 | 2011-03-22 | 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 |
US7741515B2 (en) | 2004-09-02 | 2010-06-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7615663B2 (en) * | 2004-09-02 | 2009-11-10 | Eastman Chemical Company | Optimized production of aromatic dicarboxylic acids |
US7504535B2 (en) | 2004-09-02 | 2009-03-17 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7582793B2 (en) | 2004-09-02 | 2009-09-01 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7568361B2 (en) | 2004-09-02 | 2009-08-04 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7683210B2 (en) | 2004-09-02 | 2010-03-23 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7692036B2 (en) | 2004-11-29 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
WO2006028817A2 (en) * | 2004-09-02 | 2006-03-16 | Eastman Chemical Company | Optimized liquid-phase oxidation |
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 |
US7692037B2 (en) | 2004-09-02 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7371894B2 (en) * | 2004-09-02 | 2008-05-13 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US20060205974A1 (en) * | 2005-03-08 | 2006-09-14 | Lavoie Gino G | Processes for producing aromatic dicarboxylic acids |
US7550627B2 (en) * | 2005-03-08 | 2009-06-23 | Eastman Chemical Company | Processes for producing aromatic dicarboxylic acids |
US7884231B2 (en) * | 2005-05-19 | 2011-02-08 | Eastman Chemical Company | Process to produce an enriched composition |
US7897809B2 (en) * | 2005-05-19 | 2011-03-01 | Eastman Chemical Company | Process to produce an enrichment feed |
US7432395B2 (en) * | 2005-05-19 | 2008-10-07 | Eastman Chemical Company | Enriched carboxylic acid composition |
US7834208B2 (en) * | 2005-05-19 | 2010-11-16 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
US20060264664A1 (en) * | 2005-05-19 | 2006-11-23 | Parker Kenny R | Esterification of an exchange solvent enriched composition |
US7741516B2 (en) * | 2005-05-19 | 2010-06-22 | Eastman Chemical Company | Process to enrich a carboxylic acid composition |
US20060264662A1 (en) * | 2005-05-19 | 2006-11-23 | Gibson Philip E | Esterification of an enriched composition |
US7557243B2 (en) * | 2005-05-19 | 2009-07-07 | Eastman Chemical Company | Enriched terephthalic acid composition |
US20060264656A1 (en) * | 2005-05-19 | 2006-11-23 | Fujitsu Limited | Enrichment process using compounds useful in a polyester process |
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 |
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 |
US20070155987A1 (en) * | 2006-01-04 | 2007-07-05 | O'meadhra Ruairi S | Oxidative digestion with optimized agitation |
US20070179312A1 (en) * | 2006-02-02 | 2007-08-02 | O'meadhra Ruairi Seosamh | Process for the purification of a crude carboxylic axid slurry |
US7501537B2 (en) * | 2006-03-01 | 2009-03-10 | Eastman Chemical Company | Polycarboxylic acid production system employing oxidative digestion with reduced or eliminated upstream liquor exchange |
US7393973B2 (en) * | 2006-03-01 | 2008-07-01 | Eastman Chemical Company | Polycarboxylic acid production system with enhanced residence time distribution for oxidative digestion |
US7326807B2 (en) * | 2006-03-01 | 2008-02-05 | Eastman Chemical Company | Polycarboxylic acid production system with enhanced heating for oxidative digestion |
US7772424B2 (en) * | 2006-03-01 | 2010-08-10 | Eastman Chemical Company | Polycarboxylic acid production system employing enhanced evaporative concentration downstream of oxidative digestion |
US7816556B2 (en) * | 2006-03-01 | 2010-10-19 | Eastman Chemical Company | Polycarboxylic acid production system employing enhanced multistage oxidative digestion |
US7888529B2 (en) * | 2006-03-01 | 2011-02-15 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
US20070208194A1 (en) * | 2006-03-01 | 2007-09-06 | Woodruff Thomas E | Oxidation system with sidedraw secondary reactor |
CN101636374A (zh) * | 2006-12-21 | 2010-01-27 | 纳幕尔杜邦公司 | 用于制备卤代芳香二酸的方法 |
US8455680B2 (en) | 2008-01-15 | 2013-06-04 | Eastman Chemical Company | Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
US8614350B2 (en) | 2008-01-15 | 2013-12-24 | Eastman Chemical Company | Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
US9156765B2 (en) | 2011-12-29 | 2015-10-13 | Uop Llc | Process for oxidizing alkyl-aromatic compounds |
US9045408B2 (en) | 2011-12-29 | 2015-06-02 | Uop Llc | Process for oxidizing alkyl-aromatic compounds |
CN104011005A (zh) * | 2011-12-29 | 2014-08-27 | 环球油品公司 | 制备对苯二酸的方法 |
US8927764B2 (en) | 2011-12-29 | 2015-01-06 | Uop Llc | Process for producing terephthalic acid |
US9085522B2 (en) | 2011-12-29 | 2015-07-21 | Uop Llc | Process for producing terephthalic acid |
US9024059B2 (en) | 2011-12-29 | 2015-05-05 | Uop Llc | Process for producing terephthalic acid |
US9199906B2 (en) | 2013-09-24 | 2015-12-01 | Eastman Chemical Company | Processes for producing isophthalic acid |
CN105688988B (zh) | 2014-12-16 | 2018-11-27 | 财团法人工业技术研究院 | 糠醛化合物的氧化反应催化剂及糠醛化合物的氧化方法 |
CN107954850A (zh) * | 2017-11-02 | 2018-04-24 | 华东理工大学 | 间苯二甲酸的制备方法 |
CN107963964A (zh) * | 2017-11-02 | 2018-04-27 | 华东理工大学 | 间苯二甲酸的制备方法 |
Family Cites Families (24)
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DE1270030C2 (de) * | 1962-04-27 | 1973-07-19 | Verfahren zur reinigung von terephthalsaeure | |
US3595908A (en) * | 1966-11-01 | 1971-07-27 | Inst Francais Du Petrole | Two-step oxidation of paraxylene for the production of terephthalic acid |
DE1643721B1 (de) * | 1967-12-22 | 1971-10-21 | Basf Ag | Verfahren zur kontinuierlichen Herstellung von Benzoldicarbonsaeuren |
US3626001A (en) * | 1968-05-09 | 1971-12-07 | Atlantic Richfield Co | Method for the production of high-purity isophthalic or terephthalic acid |
US3683017A (en) * | 1970-04-01 | 1972-08-08 | Fmc Corp | Oxidation of p-xylene and p-tolujc acid to terephthalic acid |
JPS5518698B1 (zh) * | 1971-04-03 | 1980-05-21 | ||
US3845117A (en) * | 1972-12-14 | 1974-10-29 | Halcon International Inc | Process for preparation of phthalic acids |
US3920735A (en) * | 1973-05-21 | 1975-11-18 | Standard Oil Co | Zirconium enhanced activity of transition metal-bromine catalysis of di- and trimethyl benzene oxidation in liquid phase |
JPS5291835A (en) * | 1976-01-29 | 1977-08-02 | Mitsubishi Chem Ind Ltd | Prepation of terephtalic acid for direct polymerization |
DE2906945C2 (de) * | 1978-02-23 | 1984-01-12 | Asahi Kasei Kogyo K.K., Osaka | Verfahren zur Gewinnung hochreiner Terephthalsäure |
JPS5555138A (en) * | 1978-10-19 | 1980-04-22 | Mitsubishi Chem Ind Ltd | Preparation of highly pure terephthalic acid |
GB2051804B (en) * | 1979-07-02 | 1983-10-12 | Ici Ltd | Preparation of aromatic carboxylic acids |
US4334086A (en) * | 1981-03-16 | 1982-06-08 | Labofina S.A. | Production of terephthalic acid |
JPS57200328A (en) * | 1981-06-03 | 1982-12-08 | Mitsubishi Chem Ind Ltd | Preparation of terephthalic acid |
JPS59104345A (ja) * | 1982-12-03 | 1984-06-16 | Kuraray Yuka Kk | 直接重合用に適したテレフタル酸の製造方法 |
JPS59106435A (ja) * | 1982-12-10 | 1984-06-20 | Mitsubishi Chem Ind Ltd | 高純度テレフタル酸の製法 |
JPS60233032A (ja) * | 1984-05-04 | 1985-11-19 | Kuraray Yuka Kk | 直接重合用に適したテレフタル酸の製造法 |
US4892970A (en) * | 1985-12-30 | 1990-01-09 | Amoco Corporation | Staged aromatics oxidation in aqueous systems |
JPH0662495B2 (ja) * | 1986-05-16 | 1994-08-17 | 三菱化成株式会社 | 高純度テレフタル酸の製法 |
JP2504461B2 (ja) * | 1987-04-24 | 1996-06-05 | 三菱化学株式会社 | 高品質テレフタル酸の製法 |
US4786753A (en) * | 1987-05-18 | 1988-11-22 | Amoco Corporation | Oxidation process for the manufacture of aromatic acids from alkylaromatic compounds |
DE69104280T2 (de) * | 1990-06-25 | 1995-02-16 | Mitsubishi Gas Chemical Co | Verfahren zur Herstellung von hochreiner Isophthalsäure. |
CA2050866A1 (en) * | 1990-09-10 | 1992-03-11 | George F. Schaefer | Oxidation of dialkyl polyaromatics to dicarboxypolyaromatics |
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-
1993
- 1993-10-14 KR KR1019930021276A patent/KR970000136B1/ko not_active IP Right Cessation
- 1993-10-27 US US08/141,738 patent/US5359133A/en not_active Expired - Lifetime
- 1993-11-30 ES ES09450020A patent/ES2081265B1/es not_active Expired - Fee Related
- 1993-11-30 WO PCT/KR1993/000106 patent/WO1995009143A1/en active Application Filing
- 1993-11-30 GB GB9415915A patent/GB2286588B/en not_active Expired - Lifetime
- 1993-11-30 JP JP6516877A patent/JP3009223B2/ja not_active Expired - Lifetime
- 1993-11-30 DE DE4397599T patent/DE4397599T1/de active Pending
- 1993-11-30 RO RO94-01218A patent/RO113850B1/ro unknown
- 1993-11-30 CA CA002128719A patent/CA2128719C/en not_active Expired - Lifetime
- 1993-11-30 BR BR9305996A patent/BR9305996A/pt not_active IP Right Cessation
- 1993-11-30 PL PL93308537A patent/PL175685B1/pl unknown
- 1993-11-30 AU AU55763/94A patent/AU5576394A/en not_active Abandoned
- 1993-11-30 SK SK877-94A patent/SK280582B6/sk not_active IP Right Cessation
- 1993-11-30 DE DE4397599A patent/DE4397599C2/de not_active Expired - Lifetime
- 1993-12-30 MY MYPI93002874A patent/MY108978A/en unknown
-
1994
- 1994-01-12 CN CN94100679A patent/CN1050118C/zh not_active Expired - Lifetime
- 1994-01-20 TW TW083100473A patent/TW307753B/zh not_active IP Right Cessation
- 1994-03-06 SA SA94140587A patent/SA94140587B1/ar unknown
- 1994-07-20 BG BG98919A patent/BG62324B1/bg unknown
- 1994-07-26 BE BE9400702A patent/BE1008546A4/nl not_active IP Right Cessation
- 1994-09-14 IT ITMI941879A patent/IT1271011B/it active IP Right Grant
- 1994-09-21 FR FR9411253A patent/FR2710638B1/fr not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1310866C (zh) * | 2002-12-09 | 2007-04-18 | 伊斯曼化学公司 | 对苯二甲酸的氧化提纯方法 |
CN1310867C (zh) * | 2002-12-09 | 2007-04-18 | 伊斯曼化学公司 | 对苯二甲酸的氧化纯化方法 |
CN100338007C (zh) * | 2002-12-09 | 2007-09-19 | 伊斯曼化学公司 | 粗羧酸浆液的纯化方法 |
CN104892391A (zh) * | 2006-03-01 | 2015-09-09 | 奇派特石化有限公司 | 使用氧化蒸煮下游的热液体取出的多元羧酸生产系统 |
CN105130782A (zh) * | 2006-03-01 | 2015-12-09 | 奇派特石化有限公司 | 使用来自氧化蒸煮的冷却的母液作为杂质吹洗系统的进料的多元羧酸生产系统 |
CN105579428A (zh) * | 2013-09-24 | 2016-05-11 | 伊士曼化工公司 | 生产对苯二甲酸的方法 |
Also Published As
Publication number | Publication date |
---|---|
JPH08506571A (ja) | 1996-07-16 |
PL308537A1 (en) | 1995-08-21 |
ES2081265B1 (es) | 1996-10-16 |
SK280582B6 (sk) | 2000-04-10 |
IT1271011B (it) | 1997-05-26 |
GB9415915D0 (en) | 1995-05-24 |
DE4397599C2 (de) | 1998-02-19 |
GB2286588B (en) | 1996-09-11 |
FR2710638A1 (fr) | 1995-04-07 |
ES2081265A1 (es) | 1996-02-16 |
SA94140587B1 (ar) | 2006-11-12 |
BE1008546A4 (nl) | 1996-06-04 |
US5359133A (en) | 1994-10-25 |
BG62324B1 (bg) | 1999-08-31 |
FR2710638B1 (fr) | 1996-04-26 |
SK87794A3 (en) | 1995-05-10 |
GB2286588A (en) | 1995-08-23 |
JP3009223B2 (ja) | 2000-02-14 |
ITMI941879A1 (it) | 1996-03-14 |
CA2128719C (en) | 1998-06-09 |
PL175685B1 (pl) | 1999-01-29 |
WO1995009143A1 (en) | 1995-04-06 |
MY108978A (en) | 1996-11-30 |
KR950008467A (ko) | 1995-04-17 |
RO113850B1 (ro) | 1998-11-30 |
CN1050118C (zh) | 2000-03-08 |
BR9305996A (pt) | 1997-10-21 |
DE4397599T1 (de) | 1997-07-24 |
BG98919A (bg) | 1995-05-31 |
KR970000136B1 (ko) | 1997-01-04 |
AU5576394A (en) | 1995-04-18 |
ITMI941879A0 (it) | 1994-09-14 |
CA2128719A1 (en) | 1995-03-29 |
TW307753B (zh) | 1997-06-11 |
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