Process for the functionalisation of surfaces

Details Process for the functionalisation of surfaces Process for the functionalisation of surfaces

B - Operations, Transporting

05

D

B05D 3/06 (2006.01) B05D 1/38 (2006.01) C08F 2/50 (2006.01) G02B 1/04 (2006.01) G02B 1/12 (2006.01) G03F 7/027 (2006.01) G03F 7/031 (2006.01) G03F 7/075 (2006.01)

Patent

CA 2208710

The present invention describes a novel coating process that comprises the use of a functional photoinitiator, or a macroinitiator derived therefrom, in a cascade of process steps, wherein, on the one hand, a functional photoinitiator or a macroinitiator derived therefrom is covalently bonded to a carrier and, on the other hand, an oligomer or polymer forming a new surface layer is covalently bonded to the functional photoinitiator, or to the carrier modified by a functional photoinitiator, via functional groups that are co- reactive with isocyanate groups. The invention relates also to novel intermediates that are carriers to which functional photoinitiators that contain free isocyanate groups are bonded.

La présente invention se rapporte à un nouveau processus de revêtement consistant à utiliser, en une succession d'étapes, un photoamorceur fonctionnel, ou un macroamorceur dérivé de celui-ci. D'une part, un photoamorceur fonctionnel ou un macroamorceur dérivé de celui-ci est lié de manière covalente à un support et, d'autre part, un oligomère ou polymère formant une nouvelle couche superficielle est lié de manière covalente au photoamorceur fonctionnel ou au support modifié par un photoamorceur fonctionnel, via des groupes fonctionnels qui co-réagissent avec des groupes isocyanates. L'invention se rapporte également à de nouveaux intermédiaires qui sont des supports auxquels sont liés des photoamorceurs fonctionnels contenant des groupes isocyanates libres.

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