SG83716A1 - Catalyst and use thereof in the production of vinyl acetate - Google Patents

Catalyst and use thereof in the production of vinyl acetate

Info

Publication number
SG83716A1
SG83716A1 SG9902470A SG1999002470A SG83716A1 SG 83716 A1 SG83716 A1 SG 83716A1 SG 9902470 A SG9902470 A SG 9902470A SG 1999002470 A SG1999002470 A SG 1999002470A SG 83716 A1 SG83716 A1 SG 83716A1
Authority
SG
Singapore
Prior art keywords
catalyst
production
vinyl acetate
vinyl
acetate
Prior art date
Application number
SG9902470A
Other languages
English (en)
Inventor
Simon James Kitchen
Daiyi Qin
Original Assignee
Bp Chem Int Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bp Chem Int Ltd filed Critical Bp Chem Int Ltd
Publication of SG83716A1 publication Critical patent/SG83716A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
    • C08F4/26—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of manganese, iron group metals or platinum group metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/66—Silver or gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/52—Gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/58—Platinum group metals with alkali- or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
    • C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
    • C07C67/055—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
SG9902470A 1998-05-22 1999-05-18 Catalyst and use thereof in the production of vinyl acetate SG83716A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9810928.3A GB9810928D0 (en) 1998-05-22 1998-05-22 Catalyst and process

Publications (1)

Publication Number Publication Date
SG83716A1 true SG83716A1 (en) 2001-10-16

Family

ID=10832459

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9902470A SG83716A1 (en) 1998-05-22 1999-05-18 Catalyst and use thereof in the production of vinyl acetate

Country Status (20)

Country Link
US (2) US6376706B2 (pt)
EP (1) EP0967009B1 (pt)
JP (1) JP4491063B2 (pt)
KR (2) KR19990088442A (pt)
CN (1) CN1149126C (pt)
BR (1) BR9917059B1 (pt)
CA (1) CA2272223A1 (pt)
DE (1) DE69935473T2 (pt)
ES (1) ES2284237T3 (pt)
GB (1) GB9810928D0 (pt)
ID (1) ID23346A (pt)
MY (1) MY129792A (pt)
NO (1) NO317804B1 (pt)
RS (1) RS20060284A (pt)
RU (1) RU2225254C2 (pt)
SA (1) SA99200490B1 (pt)
SG (1) SG83716A1 (pt)
TW (1) TWI258389B (pt)
UA (1) UA60322C2 (pt)
ZA (1) ZA993400B (pt)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010040654A (ko) * 1998-02-05 2001-05-15 스티븐 아이. 밀러 Ｐｄ-Ａｕ 비닐 아세테이트 모노머 촉매의 노화 방지
EP1038578A3 (en) * 1999-03-26 2002-01-30 President of Shizuoka University, a government agency of Japan Method of producing formaldehyde directly from methane
DE19920390C2 (de) * 1999-05-04 2002-08-01 Celanese Chem Europe Gmbh Katalysator und Verfahren zur Herstellung von Vinylacetat
US6534438B1 (en) * 2000-07-26 2003-03-18 Bp Chemicals Limited Catalyst composition
JP2002079089A (ja) * 2000-09-07 2002-03-19 Showa Denko Kk 低級脂肪族カルボン酸エステル製造用触媒、該触媒の製造方法、及び該触媒を用いた低級脂肪族カルボン酸エステルの製造方法
DE10048844A1 (de) * 2000-10-02 2002-04-11 Basf Ag Verfahren zur Herstellung von Platinmetall-Katalysatoren
GB0026241D0 (en) * 2000-10-26 2000-12-13 Bp Chem Int Ltd Process
CA2448322A1 (en) 2001-03-30 2002-10-10 Shell Internationale Research Maatschappij B.V. Process for preparing a group viii-metal containing catalyst, use thereof for preparing an alkenyl carboxylate
DE10124600A1 (de) * 2001-05-21 2002-11-28 Basf Ag Ni/Ti02-Hydrierkatalysator
JP4421201B2 (ja) 2002-03-27 2010-02-24 シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー 触媒を調製する方法、触媒、および触媒の使用
TW200539941A (en) 2003-12-19 2005-12-16 Celanese Int Corp Methods of making alkenyl alkanoates
US7468455B2 (en) 2004-11-03 2008-12-23 Velocys, Inc. Process and apparatus for improved methods for making vinyl acetate monomer (VAM)
UA95442C2 (ru) * 2004-12-20 2011-08-10 Селаниз Интернешнл Корпорейшн Модифицированные материалы носителей для катализаторов
US8227369B2 (en) 2005-05-25 2012-07-24 Celanese International Corp. Layered composition and processes for preparing and using the composition
WO2007145151A1 (en) * 2006-06-13 2007-12-21 Showa Denko K.K. Process for production of supported catalyst for acetic acid production
JP4963922B2 (ja) * 2006-10-04 2012-06-27 昭和電工株式会社 酢酸アルケニル製造用触媒の製造方法
US7825204B2 (en) * 2006-12-19 2010-11-02 Lyondell Chemical Technology, L.P. Inorganic oxide extrudates
JP4969501B2 (ja) * 2007-04-13 2012-07-04 昭和電工株式会社 酢酸アリル製造用触媒の製造方法
US7811968B2 (en) * 2007-05-11 2010-10-12 Lyondell Chemical Technology, L.P. Preparation of palladium-gold catalysts
TW200934581A (en) * 2007-11-07 2009-08-16 Sumitomo Chemical Co Method for preparing ketone compound
US20100121100A1 (en) * 2008-11-12 2010-05-13 Daniel Travis Shay Supported palladium-gold catalysts and preparation of vinyl acetate therewith
WO2011033689A1 (en) 2009-09-18 2011-03-24 Nippon Kayaku Kabushiki Kaisha Catalyst and process for preparing acrolein and/or acrylic acid by dehydration reaction of glycerin
US8440855B2 (en) * 2009-12-08 2013-05-14 Haldor Topsoe A/S Process for the production of acetic acid ethylene and vinyl acetate monomer
US8273682B2 (en) * 2009-12-16 2012-09-25 Lyondell Chemical Technology, L.P. Preparation of palladium-gold catalyst
US8329611B2 (en) * 2009-12-16 2012-12-11 Lyondell Chemical Technology, L,P. Titania-containing extrudate
US8507720B2 (en) * 2010-01-29 2013-08-13 Lyondell Chemical Technology, L.P. Titania-alumina supported palladium catalyst
US20120149939A1 (en) 2010-12-10 2012-06-14 Celanese International Corporation Recovery of Acetic Acid from Heavy Ends in Vinyl Acetate Synthesis Process
DE102011081786A1 (de) * 2011-08-30 2013-02-28 Wacker Chemie Ag Verfahren zur Acetoxylierung von Olefinen in der Gasphase
CN106999899A (zh) 2014-10-20 2017-08-01 维洛塞斯科技有限公司 去除热量的过程
RU2702107C1 (ru) * 2018-10-22 2019-10-04 Пуцзин Кемикал Индастри Ко., Лтд Катализатор карбонилирования и его получение
TW202128605A (zh) 2019-12-19 2021-08-01 美商瑟蘭斯國際股份有限公司 於乙酸乙烯酯製造期間監測各式流之可燃性之方法及系統
TWI718818B (zh) * 2019-12-19 2021-02-11 財團法人工業技術研究院 氫化不飽和多元酸的觸媒與方法
TW202204892A (zh) 2020-06-29 2022-02-01 美商瑟蘭斯國際股份有限公司 於乙酸乙烯酯製造之金屬離子原位分析
CN114425454B (zh) * 2020-10-14 2024-02-02 中国石油化工股份有限公司 醋酸乙烯催化剂及醋酸乙烯合成方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188490A (en) * 1977-05-27 1980-02-12 National Distillers And Chemical Corporation Catalytic oxidation of ethylene to mixtures of acetic acid and vinyl acetate
US4356316A (en) * 1980-03-05 1982-10-26 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing unsaturated carboxylic esters
US5185308A (en) * 1991-05-06 1993-02-09 Bp Chemicals Limited Catalysts and processes for the manufacture of vinyl acetate
EP0620205A1 (en) * 1993-04-06 1994-10-19 Showa Denko Kabushiki Kaisha Process for producing acetic acid

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230009B (de) 1964-06-05 1966-12-08 Hoechst Ag Verfahren zur Herstellung von Acetaldehyd und Essigsaeure und gleichzeitig von Vinylacetat
DE1252662B (pt) * 1965-06-25
US3373189A (en) 1965-07-09 1968-03-12 Nat Distillers Chem Corp Vapor phase process for producing vinyl acetate from ethylene
US3450748A (en) 1966-05-11 1969-06-17 Union Oil Co Preparation of vinyl acetate,acetaldehyde and acetic acid from ethylene
US3485877A (en) * 1966-10-21 1969-12-23 Eastman Kodak Co Process for converting ethylenically unsaturated hydrocarbons to carbonylic compounds
DE1667053C3 (de) * 1967-12-02 1975-10-09 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung eines Palladiumkatalysators
US3627821A (en) * 1967-12-23 1971-12-14 Knapsack Ag Process for the manufacture of unsaturated esters of carboxylic acids
DE2160649A1 (de) * 1971-12-07 1973-06-14 Hoechst Ag Verfahren zur herstellung von allylacetat
US3969274A (en) * 1974-03-14 1976-07-13 National Distillers And Chemical Corporation Fixed bed catalyst
JPS514118A (en) * 1974-06-27 1976-01-14 Kuraray Co Sakusanbiniruno seizohoho
US3970697A (en) 1974-07-01 1976-07-20 National Distillers And Chemical Corporation Oxidation of ethylene to acetic acid
DE2509251C3 (de) * 1975-03-04 1978-07-13 Hoechst Ag, 6000 Frankfurt Verfahren zur Herstellung eines Palladiumkatalysators
GB1571910A (en) * 1975-12-18 1980-07-23 Nat Distillers Chem Corp Vinyl acetate process and catalyst therefor
DE2601154A1 (de) * 1976-01-14 1977-07-21 Bayer Ag Neuer katalysator, seine herstellung und verwendung
US4048096A (en) * 1976-04-12 1977-09-13 E. I. Du Pont De Nemours And Company Surface impregnated catalyst
JPS56123946A (en) * 1980-03-05 1981-09-29 Asahi Chem Ind Co Ltd Preparation of unsaturated carboxylic acid ester
US5218140A (en) * 1988-08-02 1993-06-08 Union Carbide Chemicals & Plastics Technology Corporation Carbonylation reaction and catalyst therefor
US5557014A (en) * 1990-03-05 1996-09-17 Catalytica, Inc. Catalytic system for olefin oxidation to carbonyl products
US5179056A (en) * 1991-05-06 1993-01-12 Union Carbide Chemicals & Plastics Technology Corporation Production of alkenyl alkanoate catalysts
US5347046A (en) * 1993-05-25 1994-09-13 Engelhard Corporation Catalyst and process for using same for the preparation of unsaturated carboxylic acid esters
DE4323980C1 (de) * 1993-07-16 1995-03-30 Hoechst Ag Palladium und Kalium sowie Cadmium, Barium oder Gold enthaltender Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Vinylacetat
DE4323978C1 (de) * 1993-07-16 1995-02-16 Hoechst Ag Palladium und Kalium sowie Cadmium, Barium oder Gold enthaltender Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Vinylacetat
DE4323981C1 (de) * 1993-07-16 1995-03-09 Hoechst Ag Palladium und Kalium sowie Cadmium, Barium oder Gold enthaltender Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Vinylacetat
CA2135021A1 (en) * 1993-11-19 1995-05-20 David J. Gulliver Process for the preparation of catalysts for use in the production of vinyl acetate
US5466652A (en) * 1994-02-22 1995-11-14 The Standard Oil Co. Process for the preparation of vinyl acetate catalyst
US5665667A (en) * 1994-06-02 1997-09-09 The Standard Oil Company Process for the preparation of vinyl acetate catalyst
DE19501891C1 (de) * 1995-01-23 1996-09-26 Degussa Verfahren zur Herstellung eines Trägerkatalysators und seine Verwendung für die Produktion von Vinylacetat
DE19523271A1 (de) * 1995-06-27 1997-01-02 Hoechst Ag Katalysator und Verfahren zur Herstellung von Vinylacetat
US5576457A (en) * 1995-05-23 1996-11-19 Hoechst Celanese Corporation Catalyst and procedure for preparation of vinyl acetate
US6022823A (en) * 1995-11-07 2000-02-08 Millennium Petrochemicals, Inc. Process for the production of supported palladium-gold catalysts
US5705679A (en) * 1996-04-02 1998-01-06 Nicolau; Ioan Honeycomb catalyst for vinyl acetate synthesis
DE19619961A1 (de) * 1996-05-17 1997-11-20 Degussa Preßlinge auf Basis von pyrogen hergestelltem Siliciumdioxid
GB9616573D0 (en) 1996-08-07 1996-09-25 Bp Chem Int Ltd Process
JPH1072403A (ja) * 1996-08-28 1998-03-17 Showa Denko Kk 酢酸ビニルの製造法
GB9622911D0 (en) * 1996-11-04 1997-01-08 Bp Chem Int Ltd Process
US5777715A (en) * 1997-01-21 1998-07-07 Allen Vision Systems, Inc. Low vision rehabilitation system
DE19754991C2 (de) * 1997-12-11 2000-03-23 Celanese Chem Europe Gmbh Katalysator, Verfahren zur Herstellung des Katalysators und Verfahren zur Herstellung von Vinylacetat unter Einsatz des Katalysators
US6072078A (en) * 1997-12-12 2000-06-06 Celanese International Corporation Vinyl acetate production using a catalyst comprising palladium, gold, copper and any of certain fourth metals
KR20010040654A (ko) * 1998-02-05 2001-05-15 스티븐 아이. 밀러 Ｐｄ-Ａｕ 비닐 아세테이트 모노머 촉매의 노화 방지

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188490A (en) * 1977-05-27 1980-02-12 National Distillers And Chemical Corporation Catalytic oxidation of ethylene to mixtures of acetic acid and vinyl acetate
US4356316A (en) * 1980-03-05 1982-10-26 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing unsaturated carboxylic esters
US5185308A (en) * 1991-05-06 1993-02-09 Bp Chemicals Limited Catalysts and processes for the manufacture of vinyl acetate
EP0620205A1 (en) * 1993-04-06 1994-10-19 Showa Denko Kabushiki Kaisha Process for producing acetic acid

Also Published As

Publication number Publication date
ES2284237T3 (es) 2007-11-01
CN1243038A (zh) 2000-02-02
CN1149126C (zh) 2004-05-12
KR20060077908A (ko) 2006-07-05
ZA993400B (en) 2000-11-20
BR9917059A (pt) 2001-12-11
DE69935473D1 (de) 2007-04-26
UA60322C2 (uk) 2003-10-15
JP4491063B2 (ja) 2010-06-30
TWI258389B (en) 2006-07-21
GB9810928D0 (en) 1998-07-22
EP0967009B1 (en) 2007-03-14
KR19990088442A (ko) 1999-12-27
NO992461L (no) 1999-11-23
BR9917059B1 (pt) 2010-10-19
DE69935473T2 (de) 2007-12-06
NO317804B1 (no) 2004-12-13
EP0967009A2 (en) 1999-12-29
MY129792A (en) 2007-04-30
SA99200490B1 (ar) 2006-11-14
RS20060284A (en) 2007-09-21
JP2000000473A (ja) 2000-01-07
US6472556B2 (en) 2002-10-29
EP0967009A3 (en) 2000-04-12
US20010012818A1 (en) 2001-08-09
CA2272223A1 (en) 1999-11-22
NO992461D0 (no) 1999-05-21
RU2225254C2 (ru) 2004-03-10
US6376706B2 (en) 2002-04-23
ID23346A (id) 2000-04-05
US20010049335A1 (en) 2001-12-06

Similar Documents

Publication Publication Date Title
SG83716A1 (en) Catalyst and use thereof in the production of vinyl acetate
HUP9901871A3 (en) Catalyst and process for the preparation of vinyl acetate
ZA956007B (en) Oxidation catalyst its preparation and oxidation using the oxidation catalyst
IL154272A0 (en) The use of benzylideneaminoguanidines and hydroxyguanidines as melanocortin receptor ligands
PL330787A1 (en) Palladium-gold catalyst for use in vinyl acetate production
PL348349A1 (en) Antrhranilic acid amides and the use thereof as medicaments
GB9807142D0 (en) Catalyst and process utilising the catalyst
HUP9904047A3 (en) N-arylsulfilimine compounds and their use as catalysts in the preparation of n-arylarylsulfonamide compounds
HUP9904367A3 (en) Benzamidine derivatives and the use thereof as medicaments with ltb4-antagonistic effect
HK1039082B (zh) 光催化劑顆粒及其製備方法
ZA9811282B (en) Catalyst process for producing the catalyst and process for preparing vinyl acetate using the catalyst
HUP0001603A3 (en) Cycloalkylalkanecarboxamides and the production and use thereof
SG75902A1 (en) Catalyst process for producing the catalyst and process for preparing vinyl acetate using the catalyst
AU2841801A (en) Triazolotriazinones and the use thereof
IL136296A0 (en) Catalyst, process for its preparation, and its use in the synthesis of 1,2-dichloroethane
IL142778A0 (en) Therapeutic product and its use
AU2001266329A1 (en) Bimodal porous material and catalyst using the same
IL129909A0 (en) Novel calpaines their production and use thereof
HUP0004027A2 (en) New tissue-specific calpaines, their production and their use
AU2001258396A1 (en) Catalytic system based on bimetallic cyanides and their use in the synthesis of polyether-polyols
GB9504077D0 (en) Catalyst and its use
ZA955128B (en) Novel amido-quinoxalinediones the preparation and use thereof
HUP0104954A3 (en) Prv-1 gene and the use thereof
PL354184A1 (en) The prv-1 gene and use thereof
IL146940A0 (en) Novel calpains and their use