DE69314086D1 - Verfahren zur Reinigung von 4,4'-Diaminodiphenylmethan - Google Patents
Verfahren zur Reinigung von 4,4'-DiaminodiphenylmethanInfo
- Publication number
- DE69314086D1 DE69314086D1 DE69314086T DE69314086T DE69314086D1 DE 69314086 D1 DE69314086 D1 DE 69314086D1 DE 69314086 T DE69314086 T DE 69314086T DE 69314086 T DE69314086 T DE 69314086T DE 69314086 D1 DE69314086 D1 DE 69314086D1
- Authority
- DE
- Germany
- Prior art keywords
- diaminodiphenylmethane
- purification
- Prior art date
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/82—Purification; Separation; Stabilisation; Use of additives
- C07C209/84—Purification
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4138673A JPH05331110A (ja) | 1992-05-29 | 1992-05-29 | 4,4’−ジアミノジフェニルメタンの精製方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69314086D1 true DE69314086D1 (de) | 1997-10-30 |
DE69314086T2 DE69314086T2 (de) | 1998-01-15 |
Family
ID=15227440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69314086T Expired - Fee Related DE69314086T2 (de) | 1992-05-29 | 1993-05-28 | Verfahren zur Reinigung von 4,4'-Diaminodiphenylmethan |
Country Status (4)
Country | Link |
---|---|
US (1) | US5312989A (de) |
EP (1) | EP0572030B1 (de) |
JP (1) | JPH05331110A (de) |
DE (1) | DE69314086T2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1979306B1 (de) | 2006-01-20 | 2013-04-17 | Basf Se | Verfahren zur simultanen herstellung von 4,4'-diphenylmethandiamin sowie diphenylmethandiisocyanat und polyphenylenpolymethylenpolyisocyanaten |
US10759736B2 (en) | 2018-10-17 | 2020-09-01 | Covestro Deutschland Ag | Process for the preparation of di- and polyamines of the diphenylmethane series |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA745173A (en) * | 1966-10-25 | A. Hall John | Manufacture of 4,4'-diisocyanatodiphenylmethane | |
US2938054A (en) * | 1958-02-18 | 1960-05-24 | Allied Chem | Process for purification of 4, 4'-methylenedianiline |
DE1593865C3 (de) * | 1967-03-30 | 1975-07-10 | Bayer Ag, 5090 Leverkusen | Verfahren zur Isolierung von 4,4'-Diaminodiphenylmethan aus Polyphenylmethylenpolyamingemischen |
US3542871A (en) * | 1968-07-29 | 1970-11-24 | Upjohn Co | Purification of 4,4'-methylene dianiline by crystallization |
US4034039A (en) * | 1976-05-28 | 1977-07-05 | The Upjohn Company | Purification of methylenedianilines |
-
1992
- 1992-05-29 JP JP4138673A patent/JPH05331110A/ja active Pending
-
1993
- 1993-05-28 EP EP93108674A patent/EP0572030B1/de not_active Expired - Lifetime
- 1993-05-28 US US08/068,229 patent/US5312989A/en not_active Expired - Fee Related
- 1993-05-28 DE DE69314086T patent/DE69314086T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0572030A3 (de) | 1995-04-05 |
JPH05331110A (ja) | 1993-12-14 |
US5312989A (en) | 1994-05-17 |
EP0572030B1 (de) | 1997-09-24 |
EP0572030A2 (de) | 1993-12-01 |
DE69314086T2 (de) | 1998-01-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |