BR9002162A - Processo para a obtencao de poliisocianatos - Google Patents

Processo para a obtencao de poliisocianatos

Info

Publication number: BR9002162A
Authority: BR; Brazil
Prior art keywords: polyisocianates; obtaining; obtaining polyisocianates
Prior art date: 1989-05-10

Application number

BR909002162A

Other languages

English (en)

Inventor

Guenter Hammen

Hartmut Knoefel

Wolfgang Friederichs

Original Assignee

Bayer Ag

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.)

1989-05-10

Filing date

1990-05-09

Publication date

1991-08-13

1990-05-09 Application filed by Bayer Ag filed Critical Bayer Ag

1991-08-13 Publication of BR9002162A publication Critical patent/BR9002162A/pt

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/18—Separation; Purification; Stabilisation; Use of additives
- C07C263/20—Separation; Purification
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

BR909002162A 1989-05-10 1990-05-09 Processo para a obtencao de poliisocianatos BR9002162A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE3915181A DE3915181A1 (de)	1989-05-10	1989-05-10	Verfahren zur herstellung von polyisocyanaten

Publications (1)

Publication Number	Publication Date
BR9002162A true BR9002162A (pt)	1991-08-13

Family

ID=6380340

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR909002162A BR9002162A (pt)	1989-05-10	1990-05-09	Processo para a obtencao de poliisocianatos

Country Status (7)

Country	Link
US (1)	US5043471A (pt)
EP (1)	EP0396977B1 (pt)
JP (1)	JPH02295959A (pt)
BR (1)	BR9002162A (pt)
CA (1)	CA2015222A1 (pt)
DE (2)	DE3915181A1 (pt)
ES (1)	ES2055213T3 (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH04221356A (ja) *	1990-12-20	1992-08-11	Mitsubishi Gas Chem Co Inc	キシリレンジイソシアネートの製造方法
DE4200236A1 (de) *	1992-01-08	1993-07-15	Bayer Ag	Verfahren zur isolierung von polyisocyanat-isomeren aus polyisocyanatgemischen
EP0795543B1 (de) *	1996-03-15	2001-10-31	Bayer Ag	Verwendung von hochsiedenden Lösemitteln bzw. -gemischen als Wärmetauschmedium für die thermische Spaltung von Carbamidsäureestern
ES2245685T3 (es) *	2000-02-29	2006-01-16	Huntsman International Llc	Procedimiento para la preparacion de poliisocianatos organicos.
US9056819B2 (en)	2007-03-30	2015-06-16	Asahi Kasei Chemicals Corporation	Isocyanate production process using composition containing carbamic acid ester and aromatic hydroxy compound, and composition for transfer and storage of carbamic acid ester
EP2626345B1 (en)	2010-10-04	2019-01-16	Asahi Kasei Kabushiki Kaisha	Separation method and method for producing isocyanate
CN103804236B (zh) *	2012-11-13	2016-06-22	中国科学院过程工程研究所	一种加压热解制备异氰酸酯的设备及方法
JP2019199421A (ja) *	2018-05-15	2019-11-21	旭化成株式会社	イソシアネートの製造方法
JP2022170318A (ja) *	2021-04-28	2022-11-10	旭化成株式会社	イソシアネートの製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2409712A (en) *	1944-02-03	1946-10-22	Du Pont	Chemical process and products
US3962302A (en) *	1974-03-08	1976-06-08	Atlantic Richfield Company	Production of isocyanates from esters of carbamic acids (urethanes)
US3919278A (en) *	1974-06-13	1975-11-11	Atlantic Richfield Co	Production of isocyanates from lower alkyl esters of mononuclear aromatic carbamic acids
US3919279A (en) *	1974-06-26	1975-11-11	Atlantic Richfield Co	Catalytic production of isocyanates from esters of carbamic acids
US3919280A (en) *	1974-07-05	1975-11-11	Atlantic Richfield Co	Recovery of solvents employed in the production of isocyanates from esters of carbamic acids
JPS5219624A (en) *	1975-08-07	1977-02-15	Mitsui Toatsu Chem Inc	Process for preparation of isocyanates
DE2942543A1 (de) *	1979-10-20	1981-05-07	Basf Ag, 6700 Ludwigshafen	Verfahren zur herstellung von arylisocyanaten durch thermische spaltung von arylurethanen
DE3108990A1 (de) *	1981-03-10	1982-09-23	Bayer Ag, 5090 Leverkusen	Verfahren zur herstellung von polyisocyanaten
DE3215591A1 (de) *	1982-04-27	1983-10-27	Bayer Ag, 5090 Leverkusen	Verfahren zur kontinuierlichen thermischen spaltung von carbamidsaeureestern
JPS60231640A (ja) *	1984-05-02	1985-11-18	Asahi Chem Ind Co Ltd	イソシアナ−トの連続的製法
DE3430022A1 (de) *	1984-08-16	1986-02-27	Bayer Ag, 5090 Leverkusen	Verfahren zur gewinnung von reinen diisocyanaten

1989
- 1989-05-10 DE DE3915181A patent/DE3915181A1/de not_active Withdrawn
1990
- 1990-04-24 CA CA002015222A patent/CA2015222A1/en not_active Abandoned
- 1990-04-27 ES ES90108013T patent/ES2055213T3/es not_active Expired - Lifetime
- 1990-04-27 EP EP90108013A patent/EP0396977B1/de not_active Expired - Lifetime
- 1990-04-27 DE DE59006103T patent/DE59006103D1/de not_active Expired - Fee Related
- 1990-05-04 US US07/519,190 patent/US5043471A/en not_active Expired - Fee Related
- 1990-05-08 JP JP2117031A patent/JPH02295959A/ja active Pending
- 1990-05-09 BR BR909002162A patent/BR9002162A/pt not_active Application Discontinuation

Also Published As

Publication number	Publication date
ES2055213T3 (es)	1994-08-16
EP0396977A2 (de)	1990-11-14
CA2015222A1 (en)	1990-11-10
EP0396977A3 (de)	1992-01-22
DE59006103D1 (de)	1994-07-21
EP0396977B1 (de)	1994-06-15
DE3915181A1 (de)	1990-11-15
US5043471A (en)	1991-08-27
JPH02295959A (ja)	1990-12-06

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Legal Events

Date	Code	Title	Description
1996-11-12	FD3	Appl. lapsed due to non-payment of renewal fee