SE426167B - Sett att rena difenylmetan-4,4'-diisocyanat, som er nervarande i en rablandning innehallande minst 80 vikt-% difenylmetan-4,4' diisocyanat och even innehallande difenylmetan-2,4-diisocyanat - Google Patents
Sett att rena difenylmetan-4,4'-diisocyanat, som er nervarande i en rablandning innehallande minst 80 vikt-% difenylmetan-4,4' diisocyanat och even innehallande difenylmetan-2,4-diisocyanatInfo
- 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
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)
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 (sv) | 1976-01-26 |
SE426167B true SE426167B (sv) | 1982-12-13 |
Family
ID=10343032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7508355A SE426167B (sv) | 1974-07-24 | 1975-07-22 | Sett att rena difenylmetan-4,4'-diisocyanat, som er nervarande i en rablandning innehallande minst 80 vikt-% difenylmetan-4,4' diisocyanat och even innehallande difenylmetan-2,4-diisocyanat |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPS5134137A (sv) |
AT (1) | AT337669B (sv) |
BE (1) | BE831413A (sv) |
BR (1) | BR7504660A (sv) |
DD (1) | DD118618A5 (sv) |
DE (1) | DE2532722C2 (sv) |
ES (1) | ES439618A1 (sv) |
FR (1) | FR2279723A1 (sv) |
GB (1) | GB1517162A (sv) |
IT (1) | IT1039988B (sv) |
NL (1) | NL7508717A (sv) |
SE (1) | SE426167B (sv) |
Families Citing this family (8)
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 (sv) * | 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)
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 |
-
1974
- 1974-07-24 GB GB3272174A patent/GB1517162A/en not_active Expired
-
1975
- 1975-07-16 BE BE1006784A patent/BE831413A/xx not_active IP Right Cessation
- 1975-07-22 IT IT2565375A patent/IT1039988B/it active
- 1975-07-22 NL NL7508717A patent/NL7508717A/xx not_active Application Discontinuation
- 1975-07-22 JP JP8893975A patent/JPS5134137A/ja active Granted
- 1975-07-22 BR BR7504660A patent/BR7504660A/pt unknown
- 1975-07-22 ES ES439618A patent/ES439618A1/es not_active Expired
- 1975-07-22 FR FR7522790A patent/FR2279723A1/fr active Granted
- 1975-07-22 DD DD18741575A patent/DD118618A5/xx unknown
- 1975-07-22 DE DE19752532722 patent/DE2532722C2/de not_active Expired
- 1975-07-22 AT AT566075A patent/AT337669B/de not_active IP Right Cessation
- 1975-07-22 SE SE7508355A patent/SE426167B/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2279723B1 (sv) | 1977-12-09 |
SE7508355L (sv) | 1976-01-26 |
GB1517162A (en) | 1978-07-12 |
JPS6123180B2 (sv) | 1986-06-04 |
DE2532722A1 (de) | 1976-02-05 |
DD118618A5 (sv) | 1976-03-12 |
AT337669B (de) | 1977-07-11 |
DE2532722C2 (de) | 1985-02-21 |
BR7504660A (pt) | 1976-07-06 |
ATA566075A (de) | 1976-11-15 |
AU8327375A (en) | 1977-01-27 |
NL7508717A (nl) | 1976-01-27 |
ES439618A1 (es) | 1977-01-16 |
JPS5134137A (en) | 1976-03-23 |
FR2279723A1 (fr) | 1976-02-20 |
IT1039988B (it) | 1979-12-10 |
BE831413A (nl) | 1976-01-16 |
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