ES517281A0 - Procedimiento para la obtencion de 4,4'-diisocianatodifenilmetano. - Google Patents

Procedimiento para la obtencion de 4,4'-diisocianatodifenilmetano.

Info

Publication number: ES517281A0
Authority: ES; Spain
Prior art keywords: diisocianatodifenilmetano; procedure; obtaining
Prior art date: 1981-11-12
Legal status (The legal status 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 status listed.): Granted

Application number

ES517281A

Other languages

English (en)

Other versions

ES8307721A1 (es

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Bayer AG

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.)

1981-11-12

Filing date

1982-11-11

Publication date

1983-08-01

1982-11-11 Application filed by Bayer AG filed Critical Bayer AG

1983-08-01 Publication of ES517281A0 publication Critical patent/ES517281A0/es

1983-08-01 Publication of ES8307721A1 publication Critical patent/ES8307721A1/es

Status Expired legal-status Critical Current

Links

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

Landscapes

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

ES517281A 1981-11-12 1982-11-11 Procedimiento para la obtencion de 4,4'-diisocianatodifenilmetano. Expired ES8307721A1 (es)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19813145010 DE3145010A1 (de)	1981-11-12	1981-11-12	Verfahren zur herstellung von 4,4'-diisocyanatodiphenylmethan

Publications (2)

Publication Number	Publication Date
ES517281A0 true ES517281A0 (es)	1983-08-01
ES8307721A1 ES8307721A1 (es)	1983-08-01

Family

ID=6146267

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES517281A Expired ES8307721A1 (es)	1981-11-12	1982-11-11	Procedimiento para la obtencion de 4,4'-diisocianatodifenilmetano.

Country Status (6)

Country	Link
US (1)	US4414074A (es)
EP (1)	EP0079516B1 (es)
JP (1)	JPS5890540A (es)
BR (1)	BR8206567A (es)
DE (2)	DE3145010A1 (es)
ES (1)	ES8307721A1 (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2875877B2 (ja) *	1990-10-23	1999-03-31	三井化学株式会社	メチレン架橋ポリフェニレンポリ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
EP1475367B1 (de) *	2003-05-08	2010-07-07	Bayer MaterialScience AG	Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE10333929A1 (de) *	2003-07-25	2005-02-24	Bayer Materialscience Ag	Herstellung von Mischungen von Di- und Polyisocyanaten der Diphenylmethanreihe mit hohen Gehalten an 4,4'-Methylendiphenyldiisocyanat und 2,4'-Methylendiphenyldiisocyanat
DE102004005320A1 (de) *	2004-02-04	2005-08-25	Bayer Materialscience Ag	Herstellung von Di- und Polysocyanaten der Diphenylmethanreihe mit definierter Acidität
DE102004005319A1 (de) *	2004-02-04	2005-08-25	Bayer Materialscience Ag	Verfahren zur Herstellung von hochreinem 2,4'-Methylendiphenyldiisocyanat
DE102005026864A1 (de)	2005-06-10	2006-12-14	Bayer Materialscience Ag	Verfahren zur Herstellung von 4,4'-Diphenylmethandiisocyanat
JP2014500878A (ja) *	2010-11-17	2014-01-16	ビーエーエスエフソシエタス・ヨーロピア	４，４’−メチレンジフェニルジイソシアネートを含む混合物を精錬するための方法
EP2640695B1 (de)	2010-11-17	2015-01-07	Basf Se	Verfahren zur aufreinigung von 4,4'-methylendiphenyldiisocyanat enthaltenden mischungen
US8907124B2 (en)	2010-11-17	2014-12-09	Basf Se	Process for preparing methylenedi(phenyl isocyanate)
US9505711B2 (en)	2010-11-17	2016-11-29	Basf Se	Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
EP2640694B1 (de)	2010-11-17	2019-01-09	Basf Se	Verfahren zur herstellung von methylendiphenyldiisocyanat
EP3498689A1 (en)	2017-12-14	2019-06-19	Sulzer Chemtech AG	A plant and method for purifying an isomeric monomer, such as 4,4'-methylene diphenyl diisocyanate, from a crude mixture
EP3735405B1 (de)	2018-01-05	2021-11-24	Covestro Intellectual Property GmbH & Co. KG	Verfahren zur herstellung von methylen-diphenylen-diisocyanaten und polymethylen-polyphenylen-polyisocyanaten
CN112142623A (zh) *	2019-06-27	2020-12-29	万华化学（宁波）有限公司	一种低活性的mdi-50产品的制备方法及应用

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3155699A (en) *	1960-03-30	1964-11-03	Mobay Chemical Corp	Purification of isocyanates by reduction of the hydrolyzable chlorine and acid content
BE755243Q (fr) *	1965-07-08	1971-02-01	Upjohn Co	Procedes de fabrication d'isocyanates et de polyisocyanates
GB1229181A (es)	1968-08-01	1971-04-21
US3658656A (en) *	1968-11-07	1972-04-25	Takeda Chemical Industries Ltd	Purification of xylylene organic diisocyanate by fractional distillation in the presence of an inert gas or superheated vapor of an organic solvent
DE1923214B2 (de)	1969-05-07	1973-08-02		Verfahren zur gleichzeitigen herstellung von reinem 4,4'-diphenylmethandiisocyanat und einem polyphenyl-polymethylen-polyisocyanatgemisch, polyphenylpolymethylen-polyisocyanate und deren verwendung zur herstellung von polyurethanlacken
US3816496A (en) *	1972-01-03	1974-06-11	Olin Corp	Solvent extraction and distillation technique for purification of organic isocyanates
US3892634A (en) *	1973-02-20	1975-07-01	Upjohn Co	Separation of 2,4{40 {0 and 4,4{40 {0 methylene bis(phenyl isocyanate) from polymethylene polyphenyl polyisocyanates
US3912600A (en) *	1974-05-09	1975-10-14	Upjohn Co	Recovery of polymethylene polyphenyl polyisocyanate from a phoshenosed polyamine feed
US4118286A (en) *	1974-09-25	1978-10-03	Texaco Development Corp.	Process for reducing the acidity of organic polymeric isocyanates
US4189354A (en) *	1976-07-10	1980-02-19	Bayer Aktiengesellschaft	Process for the production of diisocyanatodiphenyl methane isomers with an adjusted content of chlorine compounds
JPS5927896B2 (ja) *	1978-11-06	1984-07-09	富士写真フイルム株式会社	ハロゲン化銀カラ−感光材料

1981
- 1981-11-12 DE DE19813145010 patent/DE3145010A1/de not_active Withdrawn
1982
- 1982-10-25 US US06/436,489 patent/US4414074A/en not_active Expired - Lifetime
- 1982-11-02 DE DE8282110089T patent/DE3268708D1/de not_active Expired
- 1982-11-02 EP EP82110089A patent/EP0079516B1/de not_active Expired
- 1982-11-11 BR BR8206567A patent/BR8206567A/pt not_active IP Right Cessation
- 1982-11-11 ES ES517281A patent/ES8307721A1/es not_active Expired
- 1982-11-12 JP JP57197847A patent/JPS5890540A/ja active Granted

Also Published As

Publication number	Publication date
DE3268708D1 (en)	1986-03-06
EP0079516A3 (en)	1984-10-10
US4414074A (en)	1983-11-08
DE3145010A1 (de)	1983-05-19
EP0079516A2 (de)	1983-05-25
JPH0219824B2 (es)	1990-05-07
BR8206567A (pt)	1983-09-27
ES8307721A1 (es)	1983-08-01
EP0079516B1 (de)	1986-01-22
JPS5890540A (ja)	1983-05-30

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