IT1272767B - Process for the preparation of amine isocyanates, oxalic acid or oxalates - Google Patents

Process for the preparation of amine isocyanates, oxalic acid or oxalates

Info

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
Application number
ITMI932277A
Other languages
Italian (it)
Inventor
Francesco Minisci
Fausta Coppa
Francesca Fontana
Original Assignee
Consiglio Nazionale Ricerche
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 Consiglio Nazionale Ricerche filed Critical Consiglio Nazionale Ricerche
Priority to ITMI932277A priority Critical patent/IT1272767B/en
Publication of ITMI932277A0 publication Critical patent/ITMI932277A0/en
Publication of ITMI932277A1 publication Critical patent/ITMI932277A1/en
Application granted granted Critical
Publication of IT1272767B publication Critical patent/IT1272767B/en

Links

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.
ITMI932277A 1993-10-27 1993-10-27 Process for the preparation of amine isocyanates, oxalic acid or oxalates IT1272767B (en)

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)

Also Published As

Publication number Publication date
ITMI932277A0 (en) 1993-10-27
ITMI932277A1 (en) 1995-04-27

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971030