EP 0000144 A1 19790110 - Process for preparing 2-isocyanatoalkyl esters of unsaturated carboxylic acids.
Title (en)
Process for preparing 2-isocyanatoalkyl esters of unsaturated carboxylic acids.
Title (de)
Verfahren zur Herstellung von 2-Isocyanatalkylestern ungesättigter Carbonsäuren.
Title (fr)
Procédé de préparation d'esters 2-isocyanato-alcoyliques d'acides carboxyliques non saturés.
Publication
Application
Priority
US 80680577 A 19770615
Abstract (en)
[origin: CA1099733A] This invention is directed to a process for preparing a 2-isocyanatoalkyl ester of an unsaturated carboxylic acid by reacting a water-soluble 2-alkenyl--2-oxazoline with a solution of phosgene in a water-immiscible organic solvent in the presence of an aqueous solution of a hydrochloric acid acceptor. The process is characterized by adding the 2-alkenyl-2-oxazoline into the reaction mixture as an aqueous solution. The aqueous solution of -the 2-alkenyl-2-oxazoline is prepared by reacting a 2-alkyl-2-oxazoline with formaldehyde to form 2-(.alpha.-hydroxymethylalkyl)-2-oxazoline, dehydrating the 2-(.alpha.-hydroxymethylalkyl)-2-oxazoline to form the 2-alkenyl--2-oxazoline, and separating a volatile composition from the reaction product of the dehydrating step which when condensed, comprises an aqueous solution of the 2-alkenyl--2-oxazoline. The 2-isocyanatoalkyl esters produced by the process of this invention are useful as reactive inter mediates in preparing coating formulations from hydroxyl-containing compounds that are curable through the carbon-to-carbon double bond.
IPC 1-7
IPC 8 full level
C07C 265/04 (2006.01); C07C 67/00 (2006.01); C07C 67/18 (2006.01); C07C 241/00 (2006.01); C07C 263/10 (2006.01); C07D 263/12 (2006.01); C07D 263/14 (2006.01)
CPC (source: EP US)
C07C 263/08 (2013.01 - EP US); C07D 263/12 (2013.01 - EP US); C07D 263/14 (2013.01 - EP US)
Citation (search report)
- [A] DE 1913273 A1 19700924 - BAYER AG
- [A] US 2821544 A 19580128 - HANS HOLTSCHMIDT
- [A] FR 1217276 A 19600503 - BAYER AG
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0000144 A1 19790110; EP 0000144 B1 19810805; AU 3705978 A 19791220; AU 515393 B2 19810402; CA 1099733 A 19810421; DE 2860892 D1 19811105; JP S545921 A 19790117; JP S5757021 B2 19821202; US 4278809 A 19810714
DOCDB simple family (application)
EP 78100156 A 19780614; AU 3705978 A 19780613; CA 305468 A 19780614; DE 2860892 T 19780614; JP 7200378 A 19780614; US 80680577 A 19770615