SE426167B - SET TO PURE DIFENYLMETHAN-4,4'-DIISOCYANATE WHICH IS PRESENT IN A QUICK MIXTURE CONTAINING AT LEAST 80% BY WEIGHT OF DIFENYLMETHAN-4,4 'DIISOCYANATE AND ALSO INCLUDING DIFENYLMETANE-2,4-DIISOCYANATE - Google Patents

SET TO PURE DIFENYLMETHAN-4,4'-DIISOCYANATE WHICH IS PRESENT IN A QUICK MIXTURE CONTAINING AT LEAST 80% BY WEIGHT OF DIFENYLMETHAN-4,4 'DIISOCYANATE AND ALSO INCLUDING DIFENYLMETANE-2,4-DIISOCYANATE

Info

Publication number
SE426167B
SE426167B SE7508355A SE7508355A SE426167B SE 426167 B SE426167 B SE 426167B SE 7508355 A SE7508355 A SE 7508355A SE 7508355 A SE7508355 A SE 7508355A SE 426167 B SE426167 B SE 426167B
Authority
SE
Sweden
Prior art keywords
diisocyanate
difenylmethan
difenylmetane
pure
weight
Prior art date
Application number
SE7508355A
Other languages
Swedish (sv)
Other versions
SE7508355L (en
Inventor
L Alders
Original Assignee
Shell Int Research
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 Shell Int Research filed Critical Shell Int Research
Publication of SE7508355L publication Critical patent/SE7508355L/en
Publication of SE426167B publication Critical patent/SE426167B/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)
SE7508355A 1974-07-24 1975-07-22 SET TO PURE DIFENYLMETHAN-4,4'-DIISOCYANATE WHICH IS PRESENT IN A QUICK MIXTURE CONTAINING AT LEAST 80% BY WEIGHT OF DIFENYLMETHAN-4,4 'DIISOCYANATE AND ALSO INCLUDING DIFENYLMETANE-2,4-DIISOCYANATE SE426167B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3272174A GB1517162A (en) 1974-07-24 1974-07-24 Purification of diisocyanate

Publications (2)

Publication Number Publication Date
SE7508355L SE7508355L (en) 1976-01-26
SE426167B true SE426167B (en) 1982-12-13

Family

ID=10343032

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7508355A SE426167B (en) 1974-07-24 1975-07-22 SET TO PURE DIFENYLMETHAN-4,4'-DIISOCYANATE WHICH IS PRESENT IN A QUICK MIXTURE CONTAINING AT LEAST 80% BY WEIGHT OF DIFENYLMETHAN-4,4 'DIISOCYANATE AND ALSO INCLUDING DIFENYLMETANE-2,4-DIISOCYANATE

Country Status (12)

Country Link
JP (1) JPS5134137A (en)
AT (1) AT337669B (en)
BE (1) BE831413A (en)
BR (1) BR7504660A (en)
DD (1) DD118618A5 (en)
DE (1) DE2532722C2 (en)
ES (1) ES439618A1 (en)
FR (1) FR2279723A1 (en)
GB (1) GB1517162A (en)
IT (1) IT1039988B (en)
NL (1) NL7508717A (en)
SE (1) SE426167B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201066A (en) * 1978-03-29 1980-05-06 Damon Corporation Flexible shaft construction for a high inertia centrifuge
DE3329124A1 (en) * 1983-08-11 1985-02-28 Bayer Ag, 5090 Leverkusen METHOD FOR PURIFYING POLYISOCYANATES AND THE POLYISOCYANATES SO PURIFIED
DE3430022A1 (en) * 1984-08-16 1986-02-27 Bayer Ag, 5090 Leverkusen METHOD FOR OBTAINING PURE DIISOCYANATES
JPS62185917U (en) * 1986-05-20 1987-11-26
DE19914291A1 (en) 1999-03-30 2000-10-05 Bayer Ag Process for the purification of a low molecular isocyanate, comprises addition of an oligomeric organic polyphosphate compound and heating for ten minutes below two hundred degrees
DE19914292A1 (en) 1999-03-30 2000-10-05 Bayer Ag Reduction of the chorine content of low molecular isocyanates comprises reaction with a tertiary or quaternary amine group containing anion exchanger for ten minutes at less than two hundred degrees
DE19922572A1 (en) 1999-05-17 2000-11-23 Bayer Ag Process for the purification of organic isocyanates, the organic isocyanates thus purified and their use
DE102004005319A1 (en) 2004-02-04 2005-08-25 Bayer Materialscience Ag Process for the preparation of high purity 2,4'-methylene diphenyl diisocyanate

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE756979A (en) * 1969-10-04 1971-03-16 Bayer Ag PROCESS FOR PURIFICATION OF DIPHENYLMETHANE-4,4 '-DIISOCYANATE

Also Published As

Publication number Publication date
IT1039988B (en) 1979-12-10
AU8327375A (en) 1977-01-27
BR7504660A (en) 1976-07-06
GB1517162A (en) 1978-07-12
SE7508355L (en) 1976-01-26
BE831413A (en) 1976-01-16
DE2532722C2 (en) 1985-02-21
FR2279723B1 (en) 1977-12-09
DE2532722A1 (en) 1976-02-05
ATA566075A (en) 1976-11-15
JPS5134137A (en) 1976-03-23
ES439618A1 (en) 1977-01-16
DD118618A5 (en) 1976-03-12
FR2279723A1 (en) 1976-02-20
JPS6123180B2 (en) 1986-06-04
AT337669B (en) 1977-07-11
NL7508717A (en) 1976-01-27

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