SU718006A3 - Способ выделени 4,4"-диаминодифенилметана - Google Patents
Способ выделени 4,4"-диаминодифенилметана Download PDFInfo
- Publication number
- SU718006A3 SU718006A3 SU772488999A SU2488999A SU718006A3 SU 718006 A3 SU718006 A3 SU 718006A3 SU 772488999 A SU772488999 A SU 772488999A SU 2488999 A SU2488999 A SU 2488999A SU 718006 A3 SU718006 A3 SU 718006A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- isomer
- mixture
- diamines
- diaminodiphenylmethane
- dihydrochloride
- Prior art date
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
- C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
- C07C209/78—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton from carbonyl compounds, e.g. from formaldehyde, and amines having amino groups bound to carbon atoms of six-membered aromatic rings, with formation of methylene-diarylamines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
(54) СПОСОБ ВЫДЕЛЕНИЯ 4,4 -ДИАМИНОДИФЕНИЛМЕТАНА
1
Предлагаетс усовершенствованный
способ выделени 4, 4-дйамино; ифенилметана , который используетс как/лромежуточный продукт пои получении полиамидов , таких как нейлон, при получении соответствующего 4,4-метилен-бис- (Фенилизоцианата), который примен етс в производстве полиуретане вых эластомеров.
Известен способ выделени 4,4 -диаминодифенилм тана из сырого продукта реакции, полученного конденсацией анилина и формальдегида в присутствии сол ной кислоты. Этот продукт разбавл ют гор чей водой и частично нейтрализуют шелочью, nocine чего чистое вешество - моногидрохлорид 4, 4-диаминодифенилметана - кристаллизуют при охлаждении продукта 1 .
-Кроме того,-известен спо.соб 2 выделени 4,4 -диаминодифени метана из смеси с 2,2- и 2,4 -изомеров, которые удал ютс нагреванием изомерной смеси при 30-100 .С в присутствии .стирина или сС -алкилстирина
обшей Формулы
снг
где Р. и R - водород, аминогруппа; R,.,- водород, ал кил С Кроме того, описано отделение 4,4-диаминодифенилметана от смеси его 2,2- и 2,4-изомеров путем обработки смеси галогенидами шелочных или щелочно-земельных металлов, с которыми 4,4-изомер образует аддукт, отделени его и регенерации 4,4 -изомера нагреванием с водой или инертным растворителем 3. При этом в конечном продукте остаетс 15% галогенида щелочного металла, который необходимо удал ть.
Целью изобретени вл етс упроцение процесса.
Claims (3)
1. Патент Канады 745173,№1169127, С 07 С 87/50, опублик.
опублик. 1969.1969 (прототип).
3. Патент Великобритании
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/693,081 US4201722A (en) | 1976-06-04 | 1976-06-04 | Process for separating 4,4'-diaminodiphenylmethane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU718006A3 true SU718006A3 (ru) | 1980-02-25 |
Family
ID=24783232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772488999A SU718006A3 (ru) | 1976-06-04 | 1977-06-03 | Способ выделени 4,4"-диаминодифенилметана |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4201722A (ru) |
| JP (1) | JPS5948819B2 (ru) |
| BE (1) | BE855402A (ru) |
| BR (1) | BR7703390A (ru) |
| DD (1) | DD130930A5 (ru) |
| DE (1) | DE2719996C2 (ru) |
| ES (1) | ES458768A1 (ru) |
| FR (1) | FR2353518A1 (ru) |
| GB (1) | GB1546349A (ru) |
| IT (1) | IT1078289B (ru) |
| MX (1) | MX145854A (ru) |
| NL (1) | NL7705499A (ru) |
| SU (1) | SU718006A3 (ru) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2962512D1 (en) * | 1978-09-12 | 1982-05-27 | Sulzer Ag | Process for the preparation of methylene-bridge polyaryl amines |
| BRPI0707139A2 (pt) * | 2006-01-20 | 2011-04-19 | Basf Se | processo para a preparação simultánea de compostos |
| 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 (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2149525A (en) * | 1934-10-18 | 1939-03-07 | Monsanto Chemicals | Separation of aminodiphenyls |
| GB808425A (en) * | 1954-08-21 | 1959-02-04 | Takashige Tojo | Improvements in or relating to the separation of aromatic amines |
| US2938054A (en) * | 1958-02-18 | 1960-05-24 | Allied Chem | Process for purification of 4, 4'-methylenedianiline |
| US3175007A (en) * | 1961-08-14 | 1965-03-23 | Dow Chemical Co | Purification of dianilines |
| US3410906A (en) * | 1965-10-15 | 1968-11-12 | Phillips Petroleum Co | Process of separating amines |
| US3542871A (en) * | 1968-07-29 | 1970-11-24 | Upjohn Co | Purification of 4,4'-methylene dianiline by crystallization |
| CA1004234A (en) * | 1972-08-04 | 1977-01-25 | Bayer Aktiengesellschaft | Process for the production of polyamines |
| DE2238379C3 (de) * | 1972-08-04 | 1984-08-30 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Polyaminen |
| DE2238920C3 (de) * | 1972-08-08 | 1984-09-27 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Polyaminen |
| US4029705A (en) * | 1975-08-18 | 1977-06-14 | The Upjohn Company | Purification process for MDA |
-
1976
- 1976-06-04 US US05/693,081 patent/US4201722A/en not_active Expired - Lifetime
-
1977
- 1977-05-04 DE DE2719996A patent/DE2719996C2/de not_active Expired
- 1977-05-09 GB GB19353/77A patent/GB1546349A/en not_active Expired
- 1977-05-11 MX MX169100A patent/MX145854A/es unknown
- 1977-05-13 ES ES458768A patent/ES458768A1/es not_active Expired
- 1977-05-18 NL NL7705499A patent/NL7705499A/xx not_active Application Discontinuation
- 1977-05-19 IT IT49480/77A patent/IT1078289B/it active
- 1977-05-25 DD DD7700199122A patent/DD130930A5/xx unknown
- 1977-05-26 BR BR7703390A patent/BR7703390A/pt unknown
- 1977-06-03 SU SU772488999A patent/SU718006A3/ru active
- 1977-06-03 BE BE178208A patent/BE855402A/xx not_active IP Right Cessation
- 1977-06-03 FR FR7717038A patent/FR2353518A1/fr active Granted
- 1977-06-03 JP JP52064972A patent/JPS5948819B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| MX145854A (es) | 1982-04-07 |
| DE2719996C2 (de) | 1986-06-26 |
| GB1546349A (en) | 1979-05-23 |
| DE2719996A1 (de) | 1977-12-15 |
| NL7705499A (nl) | 1977-12-06 |
| DD130930A5 (de) | 1978-05-17 |
| IT1078289B (it) | 1985-05-08 |
| JPS5948819B2 (ja) | 1984-11-29 |
| JPS52148055A (en) | 1977-12-08 |
| FR2353518B1 (ru) | 1983-09-09 |
| ES458768A1 (es) | 1978-03-16 |
| BE855402A (fr) | 1977-12-05 |
| US4201722A (en) | 1980-05-06 |
| BR7703390A (pt) | 1978-02-28 |
| FR2353518A1 (fr) | 1977-12-30 |
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