FR2183237A1 - - Google Patents
Info
- Publication number
- FR2183237A1 FR2183237A1 FR7315953A FR7315953A FR2183237A1 FR 2183237 A1 FR2183237 A1 FR 2183237A1 FR 7315953 A FR7315953 A FR 7315953A FR 7315953 A FR7315953 A FR 7315953A FR 2183237 A1 FR2183237 A1 FR 2183237A1
- Authority
- FR
- France
- 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
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 (2)
| Publication Number | Publication Date |
|---|---|
| FR2183237A1 true FR2183237A1 (en) | 1973-12-14 |
| FR2183237B3 FR2183237B3 (en) | 1976-04-23 |
Family
ID=10152731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7315953A Expired FR2183237B3 (en) | 1972-05-04 | 1973-05-03 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4947355A (en) |
| AR (1) | AR195612A1 (en) |
| BE (1) | BE798934A (en) |
| BR (1) | BR7303235D0 (en) |
| DE (1) | DE2322574A1 (en) |
| ES (1) | ES414392A1 (en) |
| FR (1) | FR2183237B3 (en) |
| GB (1) | GB1423993A (en) |
| NL (1) | NL7306235A (en) |
Families Citing this family (7)
| 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 (en) * | 1981-03-31 | 1982-10-12 | ||
| JPS6090601A (en) * | 1983-10-20 | 1985-05-21 | Seibu Denki Kogyo Kk | Turning method and device for workpiece with circular section |
| EP1475367B1 (en) | 2003-05-08 | 2010-07-07 | Bayer MaterialScience AG | Distillation process for separating diisocyanatodiphenylmethane isomers |
| EP2423183B1 (en) * | 2008-10-06 | 2016-03-30 | Huntsman International LLC | Process for the simultaneous production of different mixtures of diisocyanate isomers of the diphenylmethane series |
| CN112142623A (en) * | 2019-06-27 | 2020-12-29 | 万华化学（宁波）有限公司 | Preparation method and application of low-activity MDI-50 product |
-
1972
- 1972-05-04 GB GB2084772A patent/GB1423993A/en not_active Expired
-
1973
- 1973-04-30 BE BE130601A patent/BE798934A/en unknown
- 1973-05-03 FR FR7315953A patent/FR2183237B3/fr not_active Expired
- 1973-05-04 NL NL7306235A patent/NL7306235A/xx not_active Application Discontinuation
- 1973-05-04 JP JP48050213A patent/JPS4947355A/ja active Pending
- 1973-05-04 ES ES414392A patent/ES414392A1/en not_active Expired
- 1973-05-04 DE DE19732322574 patent/DE2322574A1/en active Pending
- 1973-05-04 BR BR323573A patent/BR7303235D0/en unknown
- 1973-05-04 AR AR24784773A patent/AR195612A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ES414392A1 (en) | 1976-02-01 |
| AR195612A1 (en) | 1973-10-23 |
| BR7303235D0 (en) | 1974-07-18 |
| NL7306235A (en) | 1973-11-06 |
| JPS4947355A (en) | 1974-05-08 |
| DE2322574A1 (en) | 1973-11-22 |
| FR2183237B3 (en) | 1976-04-23 |
| GB1423993A (en) | 1976-02-04 |
| BE798934A (en) | 1973-10-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |