PROCESS FOR PREPARING ELECTRON-DEFICIENT OLEFIN MONOMERS

(19)

(11)

EP 4 209 484 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	16.08.2023 Bulletin 2023/33

(43)	Date of publication:
	12.07.2023 Bulletin 2023/28

(21)	Application number: 22184081.2

(22)	Date of filing: 11.07.2022

(51)

International Patent Classification (IPC):

C07C 253/30^(2006.01)

C07C 255/19^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	C07C 253/30; C07C 255/19

	C-Sets:
	C07C 253/30, C07C 255/19;

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	KH MA MD TN

(71)	Applicant: Aeardis Ltd.
	Newry, Armagh BT35 8DA (GB)

(72)	Inventors:
	MCARDLE, CIARAN NEWRY, BT35 8DA (GB) YOU, SHULI SHANGHAI, 200032 (CN)

(74)	Representative: Araujo, Daniel
	Ingenias Creaciones Signos e Invenciones S.L.P. Avda Diagonal 514 Planta 1, Puerta 4 ES-08006 Barcelona ES-08006 Barcelona (ES)

(54)	PROCESS FOR PREPARING ELECTRON-DEFICIENT OLEFIN MONOMERS

(57) The present invention relates to a process for preparing electron-deficient olefin monomers. The process is a direct synthesis of electron-deficient monomers by catalysing a reaction between an active methylene compound and a mixture of a source of formaldehyde and a carboxylic acid anhydride, or between an active methylene compound and an acylal, wherein the catalyst system employed is acid based. The products obtained are reactive monomers of high purity, which find application in the field of fast curing adhesives.