BE798934A - CRYSTALLIZATION PROCESS - Google Patents

CRYSTALLIZATION PROCESS

Info

Publication number: BE798934A
Authority: BE; Belgium
Prior art keywords: crystallization process; crystallization
Prior art date: 1972-05-04

Application number

BE130601A

Other languages

French (fr)

Original Assignee

Ici Ltd

Priority date (The priority date 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 date listed.)

1972-05-04

Filing date

1973-04-30

Publication date

1973-10-30

1973-04-30 Application filed by Ici Ltd filed Critical Ici Ltd

1973-10-30 Publication of BE798934A publication Critical patent/BE798934A/en

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)

BE130601A 1972-05-04 1973-04-30 CRYSTALLIZATION PROCESS BE798934A (en)

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 (en)	1973-10-30

Family

ID=10152731

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE130601A BE798934A (en)	1972-05-04	1973-04-30	CRYSTALLIZATION PROCESS

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 (8)

* Cited by examiner, † Cited by third party
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
US8779182B2 (en) *	2008-10-06	2014-07-15	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
CN112979500B (en) *	2021-05-10	2024-06-18	中国科学院过程工程研究所	Device and method for purifying xylylene diisocyanate

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 AR AR24784773A patent/AR195612A1/en active
- 1973-05-04 DE DE19732322574 patent/DE2322574A1/en active Pending
- 1973-05-04 ES ES414392A patent/ES414392A1/en not_active Expired
- 1973-05-04 BR BR323573A patent/BR7303235D0/en unknown
- 1973-05-04 NL NL7306235A patent/NL7306235A/xx not_active Application Discontinuation
- 1973-05-04 JP JP48050213A patent/JPS4947355A/ja active Pending

Also Published As

Publication number	Publication date
DE2322574A1 (en)	1973-11-22
JPS4947355A (en)	1974-05-08
NL7306235A (en)	1973-11-06
AR195612A1 (en)	1973-10-23
ES414392A1 (en)	1976-02-01
GB1423993A (en)	1976-02-04
BR7303235D0 (en)	1974-07-18
FR2183237A1 (en)	1973-12-14
FR2183237B3 (en)	1976-04-23

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