RO90861B - Procedeu pentru prepararea etielnglicolului - Google Patents
Procedeu pentru prepararea etielnglicoluluiInfo
- Publication number
- RO90861B RO90861B RO115363A RO11536384A RO90861B RO 90861 B RO90861 B RO 90861B RO 115363 A RO115363 A RO 115363A RO 11536384 A RO11536384 A RO 11536384A RO 90861 B RO90861 B RO 90861B
- Authority
- RO
- Romania
- Prior art keywords
- ethylene glycol
- preparation process
- glycol preparation
- ethylene oxide
- ethylene
- Prior art date
Links
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 title abstract 9
- 238000002360 preparation method Methods 0.000 title 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
- C07C29/10—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes
- C07C29/103—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes of cyclic ethers
- C07C29/106—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of ethers, including cyclic ethers, e.g. oxiranes of cyclic ethers of oxiranes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/20—Dihydroxylic alcohols
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/04—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
- C07D301/08—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
- C07D301/10—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold
-
- 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
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
- Epoxy Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/519,653 US4508927A (en) | 1983-08-02 | 1983-08-02 | Preparation of glycols from ethylene oxide |
Publications (2)
Publication Number | Publication Date |
---|---|
RO90861A RO90861A (ro) | 1987-04-30 |
RO90861B true RO90861B (ro) | 1987-05-01 |
Family
ID=24069223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO115363A RO90861B (ro) | 1983-08-02 | 1984-07-27 | Procedeu pentru prepararea etielnglicolului |
Country Status (18)
Country | Link |
---|---|
US (1) | US4508927A (forum.php) |
EP (1) | EP0133763B1 (forum.php) |
JP (1) | JPS6054332A (forum.php) |
KR (1) | KR910007046B1 (forum.php) |
AR (1) | AR240168A1 (forum.php) |
AU (1) | AU574087B2 (forum.php) |
BG (1) | BG47032A3 (forum.php) |
BR (1) | BR8403842A (forum.php) |
CA (1) | CA1232918A (forum.php) |
DD (1) | DD229688A5 (forum.php) |
DE (1) | DE3476380D1 (forum.php) |
ES (1) | ES534787A0 (forum.php) |
IN (1) | IN161324B (forum.php) |
MX (1) | MX161869A (forum.php) |
RO (1) | RO90861B (forum.php) |
SU (1) | SU1731041A3 (forum.php) |
YU (1) | YU45639B (forum.php) |
ZA (1) | ZA846000B (forum.php) |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4812292A (en) * | 1987-10-26 | 1989-03-14 | Joslyn Valve Corporation | Chemical sterilant recovery and conversion |
US5763691A (en) * | 1995-11-30 | 1998-06-09 | Mitsubishi Chemical Corporation | Ethylene glycol process |
RU2137748C1 (ru) * | 1998-11-16 | 1999-09-20 | Открытое акционерное общество "Нижнекамскнефтехим" | Способ получения концентрированного водного раствора моноэтиленгликоля |
US6258962B1 (en) | 1999-06-14 | 2001-07-10 | Mobil Oil Corp. | Process for producing alkylene carbonates |
US6765101B1 (en) * | 2001-05-01 | 2004-07-20 | Union Carbide Chemicals & Plastics Technology Corporation | Synthesis of lower alkylene oxides and lower alkylene glycols from lower alkanes and/or lower alkenes |
US6452027B1 (en) * | 2001-09-10 | 2002-09-17 | Scientific Design Company, Inc. | Heat recovery procedure |
CA2491523C (en) * | 2002-06-28 | 2013-01-08 | Shell Internationale Research Maatschappij B.V. | A method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin |
TW200503997A (en) | 2002-12-20 | 2005-02-01 | Shell Int Research | Process for the preparation of alkylene glycol |
US8049044B2 (en) * | 2002-12-23 | 2011-11-01 | Shell Oil Company | Remediation process and apparatus |
US8148555B2 (en) * | 2003-06-26 | 2012-04-03 | Shell Oil Company | Method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin |
PE20070158A1 (es) * | 2005-05-10 | 2007-03-02 | Shell Int Research | Proceso y dispositivo para recuperar oxido de etileno de un absorbente graso |
US20070203352A1 (en) * | 2005-12-22 | 2007-08-30 | Bolk Jeroen W | Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process |
US20070154377A1 (en) * | 2005-12-22 | 2007-07-05 | Rekers Dominicus M | Process for the removal of combustible volatile contaminant materials from a process stream |
US20070197808A1 (en) * | 2005-12-22 | 2007-08-23 | Bolk Jeroen W | Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process |
US20070203350A1 (en) * | 2005-12-22 | 2007-08-30 | Bolk Jeroen W | Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process |
US20070197801A1 (en) * | 2005-12-22 | 2007-08-23 | Bolk Jeroen W | Method of installing an epoxidation catalyst in a reactor, a method of preparing an epoxidation catalyst, an epoxidation catalyst, a process for the preparation of an olefin oxide or a chemical derivable from an olefin oxide, and a reactor suitables for such a process |
US20070213545A1 (en) * | 2005-12-22 | 2007-09-13 | Bolk Jeroen W | Method Of Installing An Epoxidation Catalyst In A Reactor, A Method Of Preparing An Epoxidation Catalyst, An Epoxidation Catalyst, A Process For The Preparation Of An Olefin Oxide Or A Chemical Derivable From An Olefin Oxide, And A Reactor Suitable For Such A Process |
US7750170B2 (en) * | 2005-12-22 | 2010-07-06 | Shell Oil Company | Process for mixing an oxidant having explosive potential with a hydrocarbon |
US7459589B2 (en) * | 2005-12-22 | 2008-12-02 | Shell Oil Company | Process for the preparation of an alkylene glycol |
US20070151451A1 (en) * | 2005-12-22 | 2007-07-05 | Rekers Dominicus M | Process for the cooling, concentration or purification of ethylene oxide |
CA2641225A1 (en) * | 2006-02-03 | 2007-08-16 | Shell Internationale Research Maatschappij B.V. | A process for treating a catalyst, the catalyst, and use of the catalyst |
TW200740731A (en) * | 2006-02-22 | 2007-11-01 | Shell Int Research | Process for the preparation of alkanediol |
TWI382979B (zh) * | 2006-02-22 | 2013-01-21 | Shell Int Research | 碳酸伸烷酯之生產方法及由此生產的碳酸伸烷酯於烷二醇及碳酸二烷酯之製造中的用途 |
TW200740749A (en) * | 2006-02-22 | 2007-11-01 | Shell Int Research | Process for the preparation of an alkanediol and a dialkyl carbonate |
TWI378087B (en) * | 2006-02-22 | 2012-12-01 | Shell Int Research | Process for the preparation of an alkanediol and a dialkyl carbonate |
TWI383976B (zh) * | 2006-02-22 | 2013-02-01 | Shell Int Research | 製備碳酸二烷酯及烷二醇的方法 |
TWI387584B (zh) * | 2006-03-13 | 2013-03-01 | Shell Int Research | 碳酸伸烷酯之生產方法及由此生產之碳酸伸烷酯於烷二醇及碳酸二烷酯之製造中之用途 |
US20080154051A1 (en) * | 2006-12-20 | 2008-06-26 | Jeroen Willem Bolk | Method of installing an epoxidation catalyst in a reactor, a method of preparing an epoxidation catalyst, an epoxidation catalyst, a process for the preparation of an olefin oxide or a chemical derivable from an olefin oxide, and a reactor suitable for such a process |
US20080154052A1 (en) * | 2006-12-20 | 2008-06-26 | Jeroen Willem Bolk | Method of installing an epoxidation catalyst in a reactor, a method of preparing an epoxidation catalyst, an epoxidation catalyst, a process for the preparation of an olefin oxide or a chemical derivable from an olefin oxide, and a reactor suitable for such a process |
CA2685512C (en) | 2007-05-09 | 2016-12-06 | Shell Internationale Research Maatschappij B.V. | An epoxidation catalyst, a process for preparing the catalyst, and a process for the production of an olefin oxide, a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, or an alkanolamine |
CN101815694B (zh) * | 2007-08-14 | 2013-07-24 | 国际壳牌研究有限公司 | 制备亚烷基二醇的方法 |
TWI423946B (zh) * | 2007-11-14 | 2014-01-21 | Shell Int Research | 伸烷基二醇的製造方法 |
BRPI0820091B1 (pt) * | 2007-12-06 | 2018-02-06 | Shell Internationale Research Maatschappij B.V. | Processo para a preparação de um alquileno glicol a partir de óxido de alquileno |
US7569710B1 (en) | 2008-02-23 | 2009-08-04 | Brian Ozero | Ethylene oxide recovery process |
JP5868703B2 (ja) * | 2008-05-07 | 2016-02-24 | 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 | オレフィンオキシド、1,2−ジオール、1,2−ジオールエーテル、1,2−カーボネートまたはアルカノールアミンの製造方法 |
EP2297124B1 (en) * | 2008-05-07 | 2013-08-21 | Shell Internationale Research Maatschappij B.V. | A process for the start-up of an epoxidation process, a process for the production of ethylene oxide, a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, or an alkanolamine |
RU2506123C2 (ru) * | 2008-05-15 | 2014-02-10 | Шелл Интернэшнл Рисерч Маатсхаппий Б.В. | Способ получения алкиленкарбоната и алкиленгликоля |
BRPI0912718B1 (pt) * | 2008-05-15 | 2017-12-26 | Shell Internationale Research Maataschappij B.V | Method for producing an alkylene carbonate and / or an alkylene glycol |
EP2315737A2 (en) * | 2008-08-05 | 2011-05-04 | Dow Technology Investments LLC | Two-stage, gas phase process for the manufacture of alkylene glycol |
WO2010046320A1 (en) * | 2008-10-20 | 2010-04-29 | Shell Internationale Research Maatschappij B.V. | Process for removing an alkanol impurity from an organic carbonate stream |
US8907116B2 (en) | 2009-08-12 | 2014-12-09 | Shell Oil Company | Process for removing an alkanol impurity from a dialkyl carbonate stream |
TWI473786B (zh) | 2009-11-16 | 2015-02-21 | Shell Int Research | 製備烷二醇及碳酸二烷酯的方法 |
US8802900B2 (en) * | 2010-11-29 | 2014-08-12 | Shell Oil Company | Process for the preparation of ethylene glycol |
EP2670725B1 (en) * | 2011-01-31 | 2015-01-21 | Shell Internationale Research Maatschappij B.V. | Processes for the production of ethylene glycol |
WO2013028039A2 (ko) * | 2011-08-24 | 2013-02-28 | 롯데케미칼 주식회사 | 알킬렌 카보네이트 및/또는 알킬렌 글리콜 합성용 촉매의 재생 방법 및 알킬렌 카보네이트 및/또는 알킬렌 글리콜의 제조 방법 |
CN102911137A (zh) * | 2012-11-20 | 2013-02-06 | 中国石油化工股份有限公司 | 从乙烯直接氧化产物中分离、回收环氧乙烷的方法 |
CN105503520B (zh) * | 2014-09-25 | 2017-12-15 | 中国石油化工股份有限公司 | 碳酸乙烯酯水解制备乙二醇的方法 |
EP3548471B1 (en) | 2016-12-02 | 2021-05-19 | Shell Internationale Research Maatschappij B.V. | Methods for conditioning an ethylene epoxidation catalyst and associated methods for the production of ethylene oxide |
US10738020B2 (en) | 2017-11-22 | 2020-08-11 | Joseph D. Duff | Recovery of ethylene oxide from sterilization process |
BR112021009797B1 (pt) | 2018-12-10 | 2024-03-12 | Shell Internationale Research Maatschappij B.V | Processo para a preparação de etilenoglicol a partir de etileno |
WO2021110627A1 (en) | 2019-12-06 | 2021-06-10 | Shell Internationale Research Maatschappij B.V. | Process for removing an ether alkanol impurity from an organic carbonate stream |
KR102755274B1 (ko) | 2024-07-05 | 2025-01-22 | 최병렬 | 압축기와 반응기와 촉매제 기반 에틸렌과 프로판과 고분자 재료 혼합 복합 생산 시스템 및 그 운용방법 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3214892A (en) * | 1962-01-05 | 1965-11-02 | Pure Oil Co | Process for selectively absorbing carbon dioxide with ethylene carbonate |
US3629343A (en) * | 1968-10-11 | 1971-12-21 | Vnii Neftekhim Protsessov | Process for the production of alkylene glycols |
IT971363B (it) * | 1972-11-30 | 1974-04-30 | Sir Soc Italiana Resine Spa | Procedimento per la preparazione del glicole etilenico |
US3964980A (en) * | 1975-03-24 | 1976-06-22 | Halcon International, Inc. | Process for the recovery of ethylene oxide |
JPS6039053B2 (ja) * | 1976-08-20 | 1985-09-04 | 帝人株式会社 | グリコ−ルの製造法 |
US4314945A (en) * | 1977-12-22 | 1982-02-09 | Union Carbide Corporation | Alkylene carbonate process |
US4117250A (en) * | 1977-12-22 | 1978-09-26 | Union Carbide Corporation | Continuous process for producing alkylene glycols from alkylene carbonates |
US4160116A (en) * | 1978-08-28 | 1979-07-03 | Showa Denko K.K. | Process for the production of alkylene glycols |
US4237324A (en) * | 1979-01-22 | 1980-12-02 | The Dow Chemical Company | Production of monoglycols from alkylene carbonates |
US4221727A (en) * | 1979-08-17 | 1980-09-09 | The Dow Chemical Company | Ethylene oxide recovery |
US4233221A (en) * | 1979-10-24 | 1980-11-11 | The Dow Chemical Company | Ethylene carbonate process |
EP0024628B1 (en) * | 1979-08-17 | 1985-04-03 | The Dow Chemical Company | Preparation of ethylene carbonate |
JPS5690029A (en) * | 1979-12-24 | 1981-07-21 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of high-purity alkylene glycol |
GB2098985B (en) * | 1981-05-22 | 1985-10-09 | Ici Plc | Production of alkylene glycols |
DE3237138C2 (de) * | 1981-10-16 | 1984-05-17 | Ppg Industries, Inc., Pittsburgh, Pa. | Verfahren zur Herstellung von Ethylencarbonat oder von Gemischen aus Ethylencarbonat und Ethylenglykol |
US4400559A (en) * | 1982-06-14 | 1983-08-23 | The Halcon Sd Group, Inc. | Process for preparing ethylene glycol |
-
1983
- 1983-08-02 US US06/519,653 patent/US4508927A/en not_active Expired - Fee Related
-
1984
- 1984-07-13 IN IN574/DEL/84A patent/IN161324B/en unknown
- 1984-07-18 EP EP84304912A patent/EP0133763B1/en not_active Expired
- 1984-07-18 DE DE8484304912T patent/DE3476380D1/de not_active Expired
- 1984-07-27 AU AU31235/84A patent/AU574087B2/en not_active Ceased
- 1984-07-27 AR AR297377A patent/AR240168A1/es active
- 1984-07-27 RO RO115363A patent/RO90861B/ro unknown
- 1984-07-31 YU YU133984A patent/YU45639B/sh unknown
- 1984-08-01 DD DD84265883A patent/DD229688A5/de not_active IP Right Cessation
- 1984-08-01 BG BG066472A patent/BG47032A3/xx unknown
- 1984-08-01 KR KR1019840004575A patent/KR910007046B1/ko not_active Expired
- 1984-08-01 BR BR8403842A patent/BR8403842A/pt not_active IP Right Cessation
- 1984-08-01 CA CA000460141A patent/CA1232918A/en not_active Expired
- 1984-08-01 SU SU843778492A patent/SU1731041A3/ru active
- 1984-08-01 ES ES534787A patent/ES534787A0/es active Granted
- 1984-08-02 JP JP59161652A patent/JPS6054332A/ja active Granted
- 1984-08-02 ZA ZA846000A patent/ZA846000B/xx unknown
- 1984-08-02 MX MX202239A patent/MX161869A/es unknown
Also Published As
Publication number | Publication date |
---|---|
CA1232918A (en) | 1988-02-16 |
BG47032A3 (en) | 1990-04-16 |
ES8600186A1 (es) | 1985-10-01 |
IN161324B (forum.php) | 1987-11-14 |
RO90861A (ro) | 1987-04-30 |
AR240168A1 (es) | 1990-02-28 |
DE3476380D1 (en) | 1989-03-02 |
JPS6054332A (ja) | 1985-03-28 |
YU133984A (en) | 1986-08-31 |
AU574087B2 (en) | 1988-06-30 |
ZA846000B (en) | 1986-03-26 |
EP0133763A2 (en) | 1985-03-06 |
EP0133763A3 (en) | 1985-11-27 |
US4508927A (en) | 1985-04-02 |
MX161869A (es) | 1991-02-01 |
EP0133763B1 (en) | 1989-01-25 |
AU3123584A (en) | 1985-02-07 |
KR850001719A (ko) | 1985-04-01 |
ES534787A0 (es) | 1985-10-01 |
DD229688A5 (de) | 1985-11-13 |
BR8403842A (pt) | 1985-07-09 |
JPH0446252B2 (forum.php) | 1992-07-29 |
KR910007046B1 (ko) | 1991-09-16 |
SU1731041A3 (ru) | 1992-04-30 |
YU45639B (sh) | 1992-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RO90861B (ro) | Procedeu pentru prepararea etielnglicolului | |
RO93390B (ro) | Procedeu pentru prepararea oxizilor de alchilen | |
FR2281423A1 (fr) | Procede de preparation de composes azotes utilises comme detergents | |
ZA743313B (en) | Process for making ethylene glycol | |
FR2278666A1 (fr) | Procede de preparation d'ethers dimethyliques de glycols aliphatiques | |
PT77006B (en) | Improved process for preparing phenolic foam by using anhydrous aryl sulfonic acid catalysts as well as for preparing compositions used therefor | |
ES8301464A1 (es) | Un procedimiento para preparar la sal calcica de un acido hidroxi metilmercaptobutirico | |
MW474A1 (en) | Improved method for making detergent compositions | |
ES441358A1 (es) | Procedimiento para la preparacion directa de carbonatos al- quilenicos. | |
HUT38623A (en) | Process for production of derivatives of n-substituated neuramin-acid | |
ES471408A1 (es) | Un metodo mejorado para convertir un oxido de fosfina ter- ciaria en la correspondiente fosfina terciaria | |
ES2004803A6 (es) | Un procedimiento para preparar un liquido alcalino esencialmente exento de sulfuro | |
ES8203315A1 (es) | Procedimiento para la preparacion de compuestos de viniles- tilbeno | |
FR2346333A1 (fr) | Procede de preparation d'acide 2-chloronicotinique d'un blanc pur | |
CA998915A (en) | Chemical feeder for water conditioners | |
YU145675A (en) | Process for preparing condensed pyrimidines | |
ES8502961A1 (es) | Procedimiento para la fabricacion de los derivados del acido bicilo (3.2.1) octan carboxilico-3 | |
ES427511A1 (es) | Un procedimiento para la preparacion de triacetonamina. | |
GB1484765A (en) | Process for purifying cyanuric acid | |
IE38877B1 (en) | Process for reacting trivalent phosphorus halides with epoxides | |
YU36733B (en) | Process for preparing pure anhydrous 6-zd-(-)-alfa-aminophenylacetamidoc-penicillanic acid | |
ES460625A1 (es) | Un procedimiento para la preparacion de una solucion acuosa de cal sustancialmente homogenea. | |
YU39930B (en) | Process for obtaining n-phosphonomethylglycine | |
ZA753212B (en) | Cationic flocculants for raw water clarification | |
RO93607B1 (ro) | Procedeu de obtinere a carboximetilcelulozei sodice |