BR9814979A - Processo para a preparação de difluormetano - Google Patents
Processo para a preparação de difluormetanoInfo
- Publication number
- BR9814979A BR9814979A BR9814979-2A BR9814979A BR9814979A BR 9814979 A BR9814979 A BR 9814979A BR 9814979 A BR9814979 A BR 9814979A BR 9814979 A BR9814979 A BR 9814979A
- Authority
- BR
- Brazil
- Prior art keywords
- difluoromethane
- preparation
- reactor
- difluormetan
- reacted
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
-
- 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
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
"PROCESSO PARA, A PREPARAçãO DE DIFLUORMETANO".Proporciona-se um processo de fluoração em fase líquida para aprodução de difluormetano sem corrosão. No processo destainvenção, o cloreto de metileno e o fluoreto de hidrogênio sãoreagidos em um reator feito de polímero fluorado para a produçãode um produto de reação enquanto uma corrente de reciclagemaquecida de reagentes do processo é alimentada ao reator.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97253197A | 1997-11-18 | 1997-11-18 | |
PCT/US1998/024661 WO1999025670A1 (en) | 1997-11-18 | 1998-11-18 | Process for the preparation of difluoromethane |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9814979A true BR9814979A (pt) | 2001-11-20 |
Family
ID=25519763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9814979-2A BR9814979A (pt) | 1997-11-18 | 1998-11-18 | Processo para a preparação de difluormetano |
Country Status (10)
Country | Link |
---|---|
US (1) | US6166275A (pt) |
EP (1) | EP1042256A1 (pt) |
JP (1) | JP2001523652A (pt) |
KR (1) | KR20010032248A (pt) |
CN (1) | CN1285812A (pt) |
AU (1) | AU1419399A (pt) |
BR (1) | BR9814979A (pt) |
CA (1) | CA2310657A1 (pt) |
NZ (1) | NZ504616A (pt) |
WO (1) | WO1999025670A1 (pt) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9407257D0 (en) * | 1993-04-22 | 1994-06-08 | Ici Plc | Vaporisation of liquids |
AU2001292985A1 (en) * | 2000-09-28 | 2002-04-08 | Honeywell International, Inc. | Fluorination process |
US7189311B2 (en) * | 2001-03-23 | 2007-03-13 | Honeywell International Inc. | Purification of difluoromethane |
US6605193B2 (en) * | 2001-04-25 | 2003-08-12 | Atofina Chemicals, Inc. | Recovery of HFC-32 |
WO2003002251A2 (en) * | 2001-06-28 | 2003-01-09 | Honeywell International, Inc. | Process for preparing fluorination catalyst |
US7371905B2 (en) * | 2003-10-17 | 2008-05-13 | Honeywell International Inc. | Method of producing hydrofluorocarbons |
FR2994430B1 (fr) | 2012-08-10 | 2014-12-19 | Arkema France | Procede de production du difluoromethane |
CN104086356B (zh) * | 2014-06-26 | 2016-01-20 | 聊城氟尔新材料科技有限公司 | 一种二氟甲烷和氯化氢干法分离的装置和工艺 |
CN110790633A (zh) * | 2019-10-09 | 2020-02-14 | 浙江大学 | 一种液相法管道化多联产生产r32和r31的方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2749375A (en) * | 1956-06-05 | Fluorination | ||
US2749374A (en) * | 1950-02-24 | 1956-06-05 | Dow Chemical Co | Production of methylene fluoride |
JPS5946211B2 (ja) * | 1975-12-29 | 1984-11-10 | ダイキン工業株式会社 | 1− クロロ −1,1− ジフルオロエタンマタハ / オヨビ 1,1,1− トリフルオロエタンオセイゾウスルホウホウ |
BE1005095A3 (fr) * | 1991-07-10 | 1993-04-20 | Solvay | Procede pour la preparation de 1,1-dichloro-1,3,3,3-tetrafluoropropane. |
KR100344863B1 (ko) * | 1994-06-20 | 2002-09-18 | 다이낑 고오교 가부시키가이샤 | 디플루오로메탄의제조방법 |
KR960022411A (ko) * | 1994-12-28 | 1996-07-18 | 남경희 | 디플루오로메탄의 제조방법 |
US5763708A (en) * | 1995-09-20 | 1998-06-09 | Allied Signal Inc. | Process for the production of difluoromethane |
FR2748022B1 (fr) * | 1996-04-29 | 1998-07-24 | Atochem Elf Sa | Procede de fabrication du difluoromethane |
-
1998
- 1998-11-18 NZ NZ504616A patent/NZ504616A/en unknown
- 1998-11-18 CN CN98813046A patent/CN1285812A/zh active Pending
- 1998-11-18 KR KR1020007005451A patent/KR20010032248A/ko not_active Application Discontinuation
- 1998-11-18 JP JP2000521057A patent/JP2001523652A/ja not_active Withdrawn
- 1998-11-18 AU AU14193/99A patent/AU1419399A/en not_active Abandoned
- 1998-11-18 EP EP98958082A patent/EP1042256A1/en not_active Withdrawn
- 1998-11-18 WO PCT/US1998/024661 patent/WO1999025670A1/en not_active Application Discontinuation
- 1998-11-18 BR BR9814979-2A patent/BR9814979A/pt not_active IP Right Cessation
- 1998-11-18 CA CA002310657A patent/CA2310657A1/en not_active Abandoned
-
1999
- 1999-09-17 US US09/398,745 patent/US6166275A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6166275A (en) | 2000-12-26 |
WO1999025670A1 (en) | 1999-05-27 |
CN1285812A (zh) | 2001-02-28 |
AU1419399A (en) | 1999-06-07 |
NZ504616A (en) | 2002-02-01 |
CA2310657A1 (en) | 1999-05-27 |
EP1042256A1 (en) | 2000-10-11 |
JP2001523652A (ja) | 2001-11-27 |
KR20010032248A (ko) | 2001-04-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BR9814979A (pt) | Processo para a preparação de difluormetano | |
AR026557A1 (es) | Proceso para la fabricacion de cloruro de vinilo a partir de etano y etileno con recuperacion parcial de hci a partir del efluente del reactor | |
CA2333472A1 (en) | Processes for the production of hexafluoropropene and optionally other halogenated hydrocarbons containing fluorine | |
ES2123803T3 (es) | Proceso para la preparacion de 1,1,1,3,3-pentafluoropropano. | |
BR9813838A (pt) | Processo e aparelho para converter uma alimentação compreendida de materiais halogenados para um ou mais produtos úteis. | |
BR0015918A (pt) | Método e aparelhagem para manufaturar cloreto de vinila e cloreto de vinila obtido | |
ES2093247T3 (es) | Proceso para la produccion de etileno o una mezcla de etileno y cloruro de vinilo. | |
DE69913495D1 (de) | Verfahren zur hydrofluorierung von chlorierten kohlenwasserstoffen | |
HUP9901285A2 (hu) | Eljárás difluor-metán előállítására | |
WO2002026672A3 (en) | Fluorination process | |
KR960022411A (ko) | 디플루오로메탄의 제조방법 | |
BR9902045A (pt) | Processo para reações contìnuas de análogos de polìmeros. | |
BR9908785A (pt) | Processo contìnuo para a produção de uma poliamida mediante a reação de pelo menos uma aminonitrila com água | |
WO2007068965A3 (en) | Process for the production of dichlorotrifluoroethane | |
EP0770588A4 (en) | METHOD FOR PRODUCING DIFLUOROMETHANE | |
ES2139951T3 (es) | Procedimiento de preparacion de 2,6-difluorobenzonitrilo en ausencia de disolvente. | |
BR9610305A (pt) | Process para fabricação de 1,1,1,2-tetrafluoretano | |
BR9811881A (pt) | Processo para a fabricação contìnua de amidos hidroliticamente decompostos, eventualmente substituìdos, utilização do amido hidroliticamente decomposto e dispositivo para sua fabricação | |
KR850008145A (ko) | 회전 오븐중에서 황산과 형석을 반응시켜 플루오르산을 제조하는 방법 | |
HUP0101045A2 (hu) | Folyamatos eljárás propargil-klorid előállítására | |
KR970069959A (ko) | 1, 1, 1, 2-테트라플루오로에탄과 펜타플루오로에탄의 병산방법 | |
ATE356106T1 (de) | Verfahren zur herstellung von halogenierten ethanen | |
EP0573920A2 (en) | Process for the manufacture of tetrachloroethylene | |
ES2146740T3 (es) | Procedimiento de produccion del difluorometano y del 1,1,1,2-tetrafluoroetano. | |
US3592616A (en) | Process for the continuous production of cyanogen chloride |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application fees: application dismissed [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 7O E 8O ANUIDADES. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1910 DE 14/08/2007. |