BE798934A - Procede de cristallisation - Google Patents
Procede de cristallisationInfo
- Publication number
- BE798934A BE798934A BE130601A BE130601A BE798934A BE 798934 A BE798934 A BE 798934A BE 130601 A BE130601 A BE 130601A BE 130601 A BE130601 A BE 130601A BE 798934 A BE798934 A BE 798934A
- Authority
- BE
- Belgium
- Prior art keywords
- crystallization process
- crystallization
- Prior art date
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)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2084772A GB1423993A (en) | 1972-05-04 | 1972-05-04 | Process for the crystallisation of diphenylmethane diisocyanate from a crude undistilled polyisocyanate mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE798934A true BE798934A (fr) | 1973-10-30 |
Family
ID=10152731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE130601A BE798934A (fr) | 1972-05-04 | 1973-04-30 | Procede de cristallisation |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4947355A (xx) |
| AR (1) | AR195612A1 (xx) |
| BE (1) | BE798934A (xx) |
| BR (1) | BR7303235D0 (xx) |
| DE (1) | DE2322574A1 (xx) |
| ES (1) | ES414392A1 (xx) |
| FR (1) | FR2183237B3 (xx) |
| GB (1) | GB1423993A (xx) |
| NL (1) | NL7306235A (xx) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348285A (en) * | 1976-10-14 | 1978-05-01 | Citizen Watch Co Ltd | Feed mechanism in system for controlling turning angle of spindle for lathe |
| JPS56146648A (en) * | 1980-04-08 | 1981-11-14 | Mitsubishi Heavy Ind Ltd | Method of detecting speed of main shaft drive system of numerical-controlled machine tool |
| JPS57162047U (xx) * | 1981-03-31 | 1982-10-12 | ||
| JPS6090601A (ja) * | 1983-10-20 | 1985-05-21 | Seibu Denki Kogyo Kk | 円形断面形状を有する被加工物の旋削加工方法及び装置 |
| EP1475367B1 (de) | 2003-05-08 | 2010-07-07 | Bayer MaterialScience AG | Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane |
| WO2010040675A2 (en) * | 2008-10-06 | 2010-04-15 | Huntsman International Llc | Process for the simultaneous production of different mixtures of diisocyanate isomers of the diphenylmethane series |
| 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 |
| CN112979500B (zh) * | 2021-05-10 | 2024-06-18 | 中国科学院过程工程研究所 | 一种提纯苯二亚甲基二异氰酸酯的装置与方法 |
-
1972
- 1972-05-04 GB GB2084772A patent/GB1423993A/en not_active Expired
-
1973
- 1973-04-30 BE BE130601A patent/BE798934A/xx unknown
- 1973-05-03 FR FR7315953A patent/FR2183237B3/fr not_active Expired
- 1973-05-04 JP JP48050213A patent/JPS4947355A/ja active Pending
- 1973-05-04 ES ES414392A patent/ES414392A1/es not_active Expired
- 1973-05-04 AR AR24784773A patent/AR195612A1/es active
- 1973-05-04 DE DE19732322574 patent/DE2322574A1/de active Pending
- 1973-05-04 NL NL7306235A patent/NL7306235A/xx not_active Application Discontinuation
- 1973-05-04 BR BR323573A patent/BR7303235D0/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1423993A (en) | 1976-02-04 |
| FR2183237A1 (xx) | 1973-12-14 |
| DE2322574A1 (de) | 1973-11-22 |
| NL7306235A (xx) | 1973-11-06 |
| AR195612A1 (es) | 1973-10-23 |
| BR7303235D0 (pt) | 1974-07-18 |
| ES414392A1 (es) | 1976-02-01 |
| FR2183237B3 (xx) | 1976-04-23 |
| JPS4947355A (xx) | 1974-05-08 |
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