ES2062685T3 - Procedimiento de purificacion de metacrilamida. - Google Patents
Procedimiento de purificacion de metacrilamida.Info
- Publication number
- ES2062685T3 ES2062685T3 ES91305168T ES91305168T ES2062685T3 ES 2062685 T3 ES2062685 T3 ES 2062685T3 ES 91305168 T ES91305168 T ES 91305168T ES 91305168 T ES91305168 T ES 91305168T ES 2062685 T3 ES2062685 T3 ES 2062685T3
- Authority
- ES
- Spain
- Prior art keywords
- aquosa
- solution
- metacrilamide
- methacrylamide
- crystallization
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/22—Separation; Purification; Stabilisation; Use of additives
- C07C231/24—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
UN PROCESO DE PURIFICACION DE METACRILAMIDA CRUDA POR RECRISTALIZACION DE UNA SOLUCION ACUOSA DE METACRILAMIDA, COMPRENDE LAS ETAPAS CONDUCENTES A LA CRISTALIZACION MEDIANTE EL AJUSTE DE LA CONCENTRACION ION-HIDROGENO DE LA SOLUCION ACUOSA DE METACRILAMIDA A UN PH 8 O MAS, LA SEPARACION DE CRISTAL DE METACRILAMIDA, EL AJUSTE AL 5% POR PESO O MAS DEL LICOR MADRE RESULTANTE A UN PH 5 O MENOS, LA SEPARACION DE LA MATERIA INSOLUBLE DEL PRECIPITADO, Y REUTILIZACION DEL ENTONCES ASI TRATADO LICOR MADRE. LA ALTA CALIDAD DEL CRISTAL DE METACRILAMIDA ASI OBTENIDO ES EXCELENTE EN NUMERO HAZEN, PUREZA Y TRANSPARENCIA DE UNA SOLUCION DE METANOL Y CONVENIENTE PARA USAR COMO VIDRIOS DE PROTECCION CONTRA EL VIENTO.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15271090 | 1990-06-13 | ||
| JP16837490 | 1990-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2062685T3 true ES2062685T3 (es) | 1994-12-16 |
Family
ID=26481561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES91305168T Expired - Lifetime ES2062685T3 (es) | 1990-06-13 | 1991-06-07 | Procedimiento de purificacion de metacrilamida. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5302754A (es) |
| EP (1) | EP0461823B1 (es) |
| DE (1) | DE69103817T2 (es) |
| ES (1) | ES2062685T3 (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011089363A1 (de) * | 2011-12-21 | 2013-06-27 | Evonik Röhm Gmbh | Verfahren zur Herstellung von N-Alkyl(meth)acrylamiden |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2865960A (en) * | 1956-02-28 | 1958-12-23 | Eastman Kodak Co | Process for the removal of impurities from water-soluble acrylamides |
| NL130751C (es) * | 1965-02-01 | |||
| FR2047251A5 (es) * | 1969-05-08 | 1971-03-12 | Sumitomo Chemical Co | |
| US3666809A (en) * | 1969-10-08 | 1972-05-30 | Mitsubishi Chem Ind | Method for the production of acrylamide crystals |
| DE2063529A1 (de) * | 1969-12-26 | 1971-07-08 | Sumitomo Chemical Co , Ltd , Osaka (Japan) | Verfahren zum Abtrennen von Acrylamid |
| US4010142A (en) * | 1975-12-15 | 1977-03-01 | Nalco Chemical Company | Purification of acrylamide via crystallization with centrifugal liquor separation |
| JPS577452A (en) * | 1980-06-18 | 1982-01-14 | Mitsui Toatsu Chem Inc | Purification of aqueous acrylamide |
| JPS5950666B2 (ja) * | 1981-01-20 | 1984-12-10 | 三井東圧化学株式会社 | メタクリルアミドの精製法 |
-
1991
- 1991-06-07 ES ES91305168T patent/ES2062685T3/es not_active Expired - Lifetime
- 1991-06-07 DE DE69103817T patent/DE69103817T2/de not_active Expired - Fee Related
- 1991-06-07 EP EP91305168A patent/EP0461823B1/en not_active Expired - Lifetime
-
1992
- 1992-10-14 US US07/961,020 patent/US5302754A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0461823A1 (en) | 1991-12-18 |
| US5302754A (en) | 1994-04-12 |
| DE69103817T2 (de) | 1995-01-19 |
| DE69103817D1 (de) | 1994-10-13 |
| EP0461823B1 (en) | 1994-09-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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