BE756979A - Procede de purification du diphenylmethane-4,4' -diisocyanate - Google Patents
Procede de purification du diphenylmethane-4,4' -diisocyanateInfo
- Publication number
- BE756979A BE756979A BE756979DA BE756979A BE 756979 A BE756979 A BE 756979A BE 756979D A BE756979D A BE 756979DA BE 756979 A BE756979 A BE 756979A
- Authority
- BE
- Belgium
- Prior art keywords
- diphenylmethane
- diisocyanate
- purification
- 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)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691950101 DE1950101A1 (de) | 1969-10-04 | 1969-10-04 | Verfahren zur Reinigung von Diphenyl-methan-4,4'-diisocyanat |
Publications (1)
Publication Number | Publication Date |
---|---|
BE756979A true BE756979A (fr) | 1971-03-16 |
Family
ID=5747301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE756979D BE756979A (fr) | 1969-10-04 | Procede de purification du diphenylmethane-4,4' -diisocyanate |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2062170A (fr) |
BE (1) | BE756979A (fr) |
DE (1) | DE1950101A1 (fr) |
FR (1) | FR2064979A5 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1517162A (en) * | 1974-07-24 | 1978-07-12 | Shell Int Research | Purification of diisocyanate |
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 |
-
0
- BE BE756979D patent/BE756979A/fr unknown
-
1969
- 1969-10-04 DE DE19691950101 patent/DE1950101A1/de active Pending
-
1970
- 1970-10-02 FR FR7035776A patent/FR2064979A5/fr not_active Expired
- 1970-10-02 AU AU20621/70A patent/AU2062170A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2064979A5 (en) | 1971-07-23 |
DE1950101A1 (de) | 1971-04-08 |
AU2062170A (en) | 1972-04-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BE751254A (fr) | Procede d'hydrogenation de l'adiponitrile | |
BE760826A (fr) | Procede de preparation d'elastomeres de | |
BE757476A (fr) | Procede d'oxydeshydrogenation | |
BE749152A (fr) | Procede de regeneration de catalyseur d'hydrogenation | |
BE756218A (fr) | Procede de production d'acides imidocarboxyliques | |
FR2276398A1 (fr) | Procede de decapage | |
BE750150A (fr) | Procede pour l'obtention de polyurethanes | |
BE749488A (fr) | Procede d'hydrogenation catalytique | |
BE756725A (fr) | Procede de preparation de 3,3,3-trifluoropropylmethylpolysiloxanes | |
BE757561A (fr) | Procede d'obtention d'ethyl-2-hexanol pur | |
BE753621A (fr) | Procede ameliore de production de copolymeres d'ethylene | |
BE827294A (fr) | Procede d'hydrogenation de diacethoxybutene | |
BE756979A (fr) | Procede de purification du diphenylmethane-4,4' -diisocyanate | |
BE746545A (fr) | Procede de preparation d'oximes | |
BE746276A (fr) | Procede de fabrication d'acetylene | |
BE822245A (fr) | Procede d'encapsulement | |
BE754655A (fr) | Procede de fabrication d'etoffes non tissees | |
CH434282A (fr) | Procédé de purification de l'hexaméthylène-diamine | |
BE754434A (fr) | Procede d'enrobage | |
BE744301A (fr) | Procede d'appretage de la laine | |
BE779136R (fr) | Procede de preparation d'acetoxy-1-methyl-3-butene-2-al-4 | |
BE750844A (fr) | Procede de purification d'acide lactique | |
BE777262A (fr) | Procede de production d'aminopenicillines | |
BE757274A (fr) | Procede de production d'uree | |
BE765380A (fr) | Procede de purification d'orgoteine |