ES439618A1 - Un procedimiento para la purificacion de difenil-metano-4, 4'-diisocianato. - Google Patents

Un procedimiento para la purificacion de difenil-metano-4, 4'-diisocianato.

Info

Publication number
ES439618A1
ES439618A1 ES439618A ES439618A ES439618A1 ES 439618 A1 ES439618 A1 ES 439618A1 ES 439618 A ES439618 A ES 439618A ES 439618 A ES439618 A ES 439618A ES 439618 A1 ES439618 A1 ES 439618A1
Authority
ES
Spain
Prior art keywords
diisocyanate
purification
mdi
crude mixture
upper layer
Prior art date
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.)
Expired
Application number
ES439618A
Other languages
English (en)
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of ES439618A1 publication Critical patent/ES439618A1/es
Expired legal-status Critical Current

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
ES439618A 1974-07-24 1975-07-22 Un procedimiento para la purificacion de difenil-metano-4, 4'-diisocianato. Expired ES439618A1 (es)

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
ES439618A1 true ES439618A1 (es) 1977-01-16

Family

ID=10343032

Family Applications (1)

Application Number Title Priority Date Filing Date
ES439618A Expired ES439618A1 (es) 1974-07-24 1975-07-22 Un procedimiento para la purificacion de difenil-metano-4, 4'-diisocianato.

Country Status (12)

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

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 (de) * 1983-08-11 1985-02-28 Bayer Ag, 5090 Leverkusen Verfahren zur reinigung von polyisocyanaten und die so gereinigten polyisocyanate
DE3430022A1 (de) * 1984-08-16 1986-02-27 Bayer Ag, 5090 Leverkusen Verfahren zur gewinnung von reinen diisocyanaten
JPS62185917U (fr) * 1986-05-20 1987-11-26
DE19914292A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Verringerung des Chlorgehaltes von organischen Isocyanaten
DE19914291A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten
DE19922572A1 (de) 1999-05-17 2000-11-23 Bayer Ag Verfahren zur Reinigung von organischen Isocyanaten, die so gereinigten organischen Isocyanate und ihre Verwendung
DE102004005319A1 (de) 2004-02-04 2005-08-25 Bayer Materialscience Ag Verfahren zur Herstellung von hochreinem 2,4'-Methylendiphenyldiisocyanat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE756979A (fr) * 1969-10-04 1971-03-16 Bayer Ag Procede de purification du diphenylmethane-4,4' -diisocyanate

Also Published As

Publication number Publication date
NL7508717A (nl) 1976-01-27
ATA566075A (de) 1976-11-15
FR2279723A1 (fr) 1976-02-20
FR2279723B1 (fr) 1977-12-09
IT1039988B (it) 1979-12-10
JPS5134137A (en) 1976-03-23
SE7508355L (sv) 1976-01-26
SE426167B (sv) 1982-12-13
DE2532722C2 (de) 1985-02-21
DD118618A5 (fr) 1976-03-12
DE2532722A1 (de) 1976-02-05
JPS6123180B2 (fr) 1986-06-04
AU8327375A (en) 1977-01-27
BR7504660A (pt) 1976-07-06
AT337669B (de) 1977-07-11
BE831413A (nl) 1976-01-16
GB1517162A (en) 1978-07-12

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