IT1272767B - Process for the preparation of amine isocyanates, oxalic acid or oxalates - Google Patents
Process for the preparation of amine isocyanates, oxalic acid or oxalatesInfo
- Publication number
- IT1272767B IT1272767B ITMI932277A ITMI932277A IT1272767B IT 1272767 B IT1272767 B IT 1272767B IT MI932277 A ITMI932277 A IT MI932277A IT MI932277 A ITMI932277 A IT MI932277A IT 1272767 B IT1272767 B IT 1272767B
- Authority
- IT
- Italy
- Prior art keywords
- preparation
- oxalic acid
- oxalates
- salts
- isocyanates
- Prior art date
Links
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 title abstract 6
- -1 amine isocyanates Chemical class 0.000 title abstract 2
- 239000012948 isocyanate Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 235000006408 oxalic acid Nutrition 0.000 title abstract 2
- 150000003891 oxalate salts Chemical class 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 150000001447 alkali salts Chemical class 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 150000001879 copper Chemical class 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Abstract
Process for the preparation of alkyl or aryl isocyanates comprising the reaction between monoamides of oxalic acid and the corresponding alkali salts II with persulphuric acid or with the persulphate of an alkali metal or ammonia at a temperature of between 0 and 100 degree C in the presence of catalytic quantities of silver salts and possibly water-soluble copper salts in a two-phase medium comprising water and an organic solvent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI932277A IT1272767B (en) | 1993-10-27 | 1993-10-27 | Process for the preparation of amine isocyanates, oxalic acid or oxalates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI932277A IT1272767B (en) | 1993-10-27 | 1993-10-27 | Process for the preparation of amine isocyanates, oxalic acid or oxalates |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI932277A0 ITMI932277A0 (en) | 1993-10-27 |
ITMI932277A1 ITMI932277A1 (en) | 1995-04-27 |
IT1272767B true IT1272767B (en) | 1997-06-26 |
Family
ID=11367096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI932277A IT1272767B (en) | 1993-10-27 | 1993-10-27 | Process for the preparation of amine isocyanates, oxalic acid or oxalates |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1272767B (en) |
-
1993
- 1993-10-27 IT ITMI932277A patent/IT1272767B/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITMI932277A0 (en) | 1993-10-27 |
ITMI932277A1 (en) | 1995-04-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971030 |