BR9711971A - Processo para a produ-Æo de difluometano - Google Patents

Processo para a produ-Æo de difluometano

Info

Publication number: BR9711971A
Authority: BR; Brazil
Prior art keywords: difluoromethane; difluomethane; production; contained; hydrogen fluoride
Prior art date: 1996-08-27

Application number

BR9711971A

Other languages

English (en)

Inventor

Takehide Tsuda

Takashi Shibanuma

Yasufu Yamada

Original Assignee

Daikin Ind Ltda Sociedade Japo

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.)

1996-08-27

Filing date

1997-08-26

Publication date

1999-08-24

1997-08-26 Application filed by Daikin Ind Ltda Sociedade Japo filed Critical Daikin Ind Ltda Sociedade Japo

1999-08-24 Publication of BR9711971A publication Critical patent/BR9711971A/pt

Links

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- 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
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
- C01B7/195—Separation; Purification

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)

BR9711971A 1996-08-27 1997-08-26 Processo para a produ-Æo de difluometano BR9711971A (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP22529096		1996-08-27
PCT/JP1997/002961 WO1998008789A1 (fr)	1996-08-27	1997-08-26	Procede de fabrication de difluoromethane

Publications (1)

Publication Number	Publication Date
BR9711971A true BR9711971A (pt)	1999-08-24

Family

ID=16827024

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9711971A BR9711971A (pt)	1996-08-27	1997-08-26	Processo para a produ-Æo de difluometano

Country Status (12)

Country	Link
US (1)	US6375808B1 (pt)
EP (1)	EP0924178B1 (pt)
JP (1)	JP3569921B2 (pt)
KR (1)	KR100488229B1 (pt)
CN (1)	CN1122006C (pt)
AT (1)	ATE208359T1 (pt)
AU (1)	AU719437B2 (pt)
BR (1)	BR9711971A (pt)
CA (1)	CA2264686A1 (pt)
DE (1)	DE69708127T2 (pt)
ES (1)	ES2167771T3 (pt)
WO (1)	WO1998008789A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2001233808A (ja)	2000-02-22	2001-08-28	Asahi Glass Co Ltd	ジフルオロメタンの精製方法
US6403849B1 (en)	2000-09-26	2002-06-11	3M Innovative Properties Company	Method for purifying perfluorocarbons
US7371363B2 (en) *	2003-07-15	2008-05-13	Honeywell International Inc.	Methods of purifying hydrogen fluoride
JP5747684B2 (ja) *	2010-09-14	2015-07-15	セントラル硝子株式会社	ヒドロフルオロカーボンまたはヒドロクロロフルオロカーボンの脱水方法、および該脱水方法を用いた１，３，３，３−テトラフルオロプロペンの製造方法
US10032195B2 (en) *	2013-03-13	2018-07-24	Airline Tariff Publishing Company	System, method and computer program product for providing a fare analytic engine
CN104888574A (zh) *	2015-06-02	2015-09-09	江苏三美化工有限公司	一种二氟甲烷反应气中hf的分离设备及其工艺
CN108929193A (zh) *	2018-06-28	2018-12-04	江苏三美化工有限公司	一种高纯度二氟甲烷的精馏工艺
CN113880048B (zh) *	2021-09-30	2023-06-27	中化蓝天霍尼韦尔新材料有限公司	一种氢氟酸高效回收***及方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR741966A (pt) *	1931-09-02	1933-02-23
US2640086A (en)	1951-12-15	1953-05-26	Du Pont	Process for separating hydrogen fluoride from chlorodifluoromethane
GB1052118A (pt) *	1963-03-30
US3873624A (en) *	1973-01-30	1975-03-25	Allied Chem	Process of preparing {60 -formyl sulfides and 2-hydrocarbyl-thioaldoximes therefrom
US3976447A (en)	1973-04-26	1976-08-24	Pennwalt Corporation	Removal of hydrogen fluoride from gaseous mixture by absorption on alkaline earth metal fluoride
US3873629A (en) *	1974-01-23	1975-03-25	Du Pont	Separation of chlorodifluoromethane and hydrogen
FR2414475A1 (fr)	1978-01-13	1979-08-10	Solvay	Procede pour la separation du fluorure d'hydrogene de ses melanges avec le 1-chloro-1, 1-difluorethane
US5094773A (en)	1988-08-01	1992-03-10	E. I. Du Pont De Nemours And Company	Azeotropes of HF and process for the separation of HF via azeotropic distillation
DE69104426T2 (de)	1990-07-04	1995-02-16	Ici Plc	Prozess zur Abtrennung von 1,1,1,2-Tetrafluorethan aus Gemischen desselben mit Fluorwasserstoff und/oder 1-Chlor-2,2-difluorethylen.
JPH05178768A (ja)	1991-12-16	1993-07-20	Showa Denko Kk	１，１，１，２−テトラフルオロエタンとフッ化水素の分離方法
KR100338277B1 (ko) *	1992-04-13	2003-02-20	다이낑 고오교 가부시키가이샤	플루오르화수소의제거방법
FR2695386B1 (fr) *	1992-09-10	1994-10-14	Atochem Elf Sa	Procédé de séparation de fluorure d'hydrogène de ses mélanges avec le 1,1,1-trifluoro-2-chloroéthane.
ES2110293T5 (es) *	1994-02-28	2008-01-16	Arkema France	Procedimiento para la separacion de fluoruro de hidrogeno y de difluormetano.
US5763708A (en) *	1995-09-20	1998-06-09	Allied Signal Inc.	Process for the production of difluoromethane

1997
- 1997-08-26 AU AU38693/97A patent/AU719437B2/en not_active Ceased
- 1997-08-26 AT AT97935886T patent/ATE208359T1/de not_active IP Right Cessation
- 1997-08-26 BR BR9711971A patent/BR9711971A/pt not_active IP Right Cessation
- 1997-08-26 US US09/242,699 patent/US6375808B1/en not_active Expired - Lifetime
- 1997-08-26 EP EP97935886A patent/EP0924178B1/en not_active Expired - Lifetime
- 1997-08-26 WO PCT/JP1997/002961 patent/WO1998008789A1/ja active IP Right Grant
- 1997-08-26 KR KR10-1999-7001454A patent/KR100488229B1/ko not_active IP Right Cessation
- 1997-08-26 CA CA002264686A patent/CA2264686A1/en not_active Abandoned
- 1997-08-26 JP JP51146798A patent/JP3569921B2/ja not_active Expired - Fee Related
- 1997-08-26 ES ES97935886T patent/ES2167771T3/es not_active Expired - Lifetime
- 1997-08-26 DE DE69708127T patent/DE69708127T2/de not_active Expired - Fee Related
- 1997-08-26 CN CN97197481A patent/CN1122006C/zh not_active Expired - Lifetime

Also Published As

Publication number	Publication date
KR100488229B1 (ko)	2005-05-10
ES2167771T3 (es)	2002-05-16
DE69708127D1 (de)	2001-12-13
CN1228754A (zh)	1999-09-15
EP0924178A1 (en)	1999-06-23
EP0924178A4 (pt)	1999-07-14
EP0924178B1 (en)	2001-11-07
US6375808B1 (en)	2002-04-23
DE69708127T2 (de)	2002-06-20
AU3869397A (en)	1998-03-19
WO1998008789A1 (fr)	1998-03-05
CN1122006C (zh)	2003-09-24
JP3569921B2 (ja)	2004-09-29
KR20000035814A (ko)	2000-06-26
CA2264686A1 (en)	1998-03-05
AU719437B2 (en)	2000-05-11
ATE208359T1 (de)	2001-11-15

Similar Documents

Publication	Publication Date	Title
CA2351338A1 (en)	2000-06-02	Improved method for refining vegetable oil
BR0314992A (pt)	2005-08-09	Processo para a preparação de ácido acrìlico, e, uso de cristais em suspensão
BR9711971A (pt)	1999-08-24	Processo para a produ-Æo de difluometano
BR9507711A (pt)	1997-09-23	Processo e dispositivo para recuperação de aminas e uso de residuos obteniveis pelo processo
WO2005009896A8 (en)	2006-05-11	Methods of purifying hydrogen fluoride
TNSN98021A1 (fr)	2005-03-15	Procede pour la purification de l'acide phosphorique obtenu par voie humide.
BR9803925A (pt)	1999-12-21	Processo para a preparação de ésteres do ácido cinâmico.
CA2031229A1 (en)	1992-05-31	Fluoride removal from sulphuric acid
BR8807347A (pt)	1990-03-13	Processo para a recuperacao de alcoois usando uma membrana de polimero modificado por acido organico
BR9713102A (pt)	2000-03-28	Purificação de ácido acrilìco obtido por oxidação catalìtica de propileno
DE60122461D1 (de)	2006-10-05	Regenerierung einer Vorrichtung zur Reingung von Kohlenwasserstoffen
CO5611206A2 (es)	2006-02-28	Metodo para tratar materiales carbonosos
DE3764063D1 (de)	1990-09-06	Verfahren zur herstellung von trifluoromethyliodid.
BR8601149A (pt)	1986-11-25	Processo para remover impurezas soluveis em solventes
PL350532A1 (en)	2002-05-20	Continuous isothermal process for obtaining mononitrotoluene
DE69801395D1 (de)	2001-09-27	Verfahren zur Reinigung von Dimethylsulfoxid (DMSO)
ES2077346T3 (es)	1995-11-16	Procedimiento para el tratamiento de acido sulfurico de desecho.
EE9700332A (et)	1998-06-15	Meetod ja seade kõrgtemperatuurilisel retsükliseerimisel ja spetsiaalsel fraktsioneerival konverteerimisel saadud toorsünteesigaasi täielikuks heitmeteta kasutamiseks
FR2767318B1 (fr)	1999-10-29	Procede de recuperation d'acide nitrique compris dans un melange de composes aromatiques dinitres
BR8400960A (pt)	1984-10-16	Processo para converter carboidratos em acido acetico por crescimento de c. thermoaceticum
CA2173065A1 (en)	1996-10-01	Process for Removal of Diol as Impurity in Cyclic Carbonic Acid Ester
BR9502686A (pt)	1996-03-05	Processo para a neutralização não aquosa de n-acil sarcosinas
BR8200427A (pt)	1982-11-30	Processo para formar continuamente um fluoreto acido a partir de monoxido de carbono,fluoreto de hidrogenio anidro e uma olefina
ATE555077T1 (de)	2012-05-15	Hochkonzentrierte wässrige lösungen von n,n- dialkyl-glyzinen und verfahren zu deren herstellung
TW363905B (en)	1999-07-11	Recycling process for copper-containing waste

Legal Events

Date	Code	Title	Description
2006-03-01	B08F	Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]	Free format text: REFERENTE A 7A E 8A ANUIDADES.
2011-11-29	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 1834 DE 01/03/2006.