JPS4947355A - - Google Patents
Info
- Publication number
- JPS4947355A JPS4947355A JP48050213A JP5021373A JPS4947355A JP S4947355 A JPS4947355 A JP S4947355A JP 48050213 A JP48050213 A JP 48050213A JP 5021373 A JP5021373 A JP 5021373A JP S4947355 A JPS4947355 A JP S4947355A
- Authority
- JP
- Japan
- 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.)
- Pending
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 |
---|---|
JPS4947355A true JPS4947355A (en) | 1974-05-08 |
Family
ID=10152731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP48050213A Pending JPS4947355A (en) | 1972-05-04 | 1973-05-04 |
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) |
Cited By (4)
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 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1475367B1 (en) | 2003-05-08 | 2010-07-07 | Bayer MaterialScience AG | Distillation process for separating diisocyanatodiphenylmethane isomers |
CA2813552C (en) * | 2008-10-06 | 2015-01-20 | 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 DE DE19732322574 patent/DE2322574A1/en active Pending
- 1973-05-04 ES ES414392A patent/ES414392A1/en not_active Expired
- 1973-05-04 NL NL7306235A patent/NL7306235A/xx not_active Application Discontinuation
- 1973-05-04 BR BR323573A patent/BR7303235D0/en unknown
- 1973-05-04 AR AR24784773A patent/AR195612A1/en active
- 1973-05-04 JP JP48050213A patent/JPS4947355A/ja active Pending
Cited By (5)
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 |
JPS6243801B2 (en) * | 1983-10-20 | 1987-09-17 | Seibu Denki Kogyo Kk |
Also Published As
Publication number | Publication date |
---|---|
BR7303235D0 (en) | 1974-07-18 |
ES414392A1 (en) | 1976-02-01 |
AR195612A1 (en) | 1973-10-23 |
FR2183237A1 (en) | 1973-12-14 |
NL7306235A (en) | 1973-11-06 |
FR2183237B3 (en) | 1976-04-23 |
GB1423993A (en) | 1976-02-04 |
DE2322574A1 (en) | 1973-11-22 |
BE798934A (en) | 1973-10-30 |