AR195612A1 - A PROCEDURE FOR THE SPARATION OF DIPHENYLMETHAN DIISOCYANATE WITH REGARD TO A CRUDE NON-DISTILLED POLYISOCYANATE MIXTURE - Google Patents

A PROCEDURE FOR THE SPARATION OF DIPHENYLMETHAN DIISOCYANATE WITH REGARD TO A CRUDE NON-DISTILLED POLYISOCYANATE MIXTURE

Info

Publication number
AR195612A1
AR195612A1 AR24784773A AR24784773A AR195612A1 AR 195612 A1 AR195612 A1 AR 195612A1 AR 24784773 A AR24784773 A AR 24784773A AR 24784773 A AR24784773 A AR 24784773A AR 195612 A1 AR195612 A1 AR 195612A1
Authority
AR
Argentina
Prior art keywords
sparation
regard
procedure
polyisocyanate mixture
crude non
Prior art date
Application number
AR24784773A
Other languages
Spanish (es)
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.)
Filing date
Publication date
Application filed by Ici Ltd filed Critical Ici Ltd
Application granted granted Critical
Publication of AR195612A1 publication Critical patent/AR195612A1/en

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)
AR24784773A 1972-05-04 1973-05-04 A PROCEDURE FOR THE SPARATION OF DIPHENYLMETHAN DIISOCYANATE WITH REGARD TO A CRUDE NON-DISTILLED POLYISOCYANATE MIXTURE AR195612A1 (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
AR195612A1 true AR195612A1 (en) 1973-10-23

Family

ID=10152731

Family Applications (1)

Application Number Title Priority Date Filing Date
AR24784773A AR195612A1 (en) 1972-05-04 1973-05-04 A PROCEDURE FOR THE SPARATION OF DIPHENYLMETHAN DIISOCYANATE WITH REGARD TO A CRUDE NON-DISTILLED POLYISOCYANATE MIXTURE

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)

* 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
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

Also Published As

Publication number Publication date
ES414392A1 (en) 1976-02-01
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
FR2183237A1 (en) 1973-12-14
GB1423993A (en) 1976-02-04
BE798934A (en) 1973-10-30

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