BR7504660A - PROCESS FOR PURIFICATION OF DIPHENYL-METHANE-4,4'-DIISOCIANATE - Google Patents

PROCESS FOR PURIFICATION OF DIPHENYL-METHANE-4,4'-DIISOCIANATE

Info

Publication number
BR7504660A
BR7504660A BR7504660A BR7504660A BR7504660A BR 7504660 A BR7504660 A BR 7504660A BR 7504660 A BR7504660 A BR 7504660A BR 7504660 A BR7504660 A BR 7504660A BR 7504660 A BR7504660 A BR 7504660A
Authority
BR
Brazil
Prior art keywords
diisocianate
diphenyl
methane
purification
Prior art date
Application number
BR7504660A
Other languages
Portuguese (pt)
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 BR7504660A publication Critical patent/BR7504660A/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)
BR7504660A 1974-07-24 1975-07-22 PROCESS FOR PURIFICATION OF DIPHENYL-METHANE-4,4'-DIISOCIANATE BR7504660A (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 (1)

Publication Number Publication Date
BR7504660A true BR7504660A (en) 1976-07-06

Family

ID=10343032

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7504660A BR7504660A (en) 1974-07-24 1975-07-22 PROCESS FOR PURIFICATION OF DIPHENYL-METHANE-4,4'-DIISOCIANATE

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
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
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
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
NL7508717A (en) 1976-01-27
JPS5134137A (en) 1976-03-23
ES439618A1 (en) 1977-01-16
FR2279723A1 (en) 1976-02-20
AT337669B (en) 1977-07-11
DE2532722C2 (en) 1985-02-21
SE426167B (en) 1982-12-13
DD118618A5 (en) 1976-03-12
AU8327375A (en) 1977-01-27
ATA566075A (en) 1976-11-15
SE7508355L (en) 1976-01-26
JPS6123180B2 (en) 1986-06-04
BE831413A (en) 1976-01-16
FR2279723B1 (en) 1977-12-09
IT1039988B (en) 1979-12-10
DE2532722A1 (en) 1976-02-05
GB1517162A (en) 1978-07-12

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