PHOTORADICAL PROCESS FOR CURING AN ALKYD RESIN

The invention relates to a process for cross-linking an unsaturated alkyd resin A by radical polymerisation comprising the steps of: i) placing an unsaturated alkyd resin A in contact with a polythiol T as a cross-linking agent, in the presence of: a. a radical photoinitiator (PA) absorbing light at...

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Bibliographische Detailangaben
Hauptverfasser:	LALEVÉE, Jacques, ZAHOUILY, Khalid, KAVALLI, Tuba
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to a process for cross-linking an unsaturated alkyd resin A by radical polymerisation comprising the steps of: i) placing an unsaturated alkyd resin A in contact with a polythiol T as a cross-linking agent, in the presence of: a. a radical photoinitiator (PA) absorbing light at a wavelength λ in the UV or visible range, and b. an iodonium salt as a radical co-initiator (coA); ii) irradiating the reaction mixture obtained in step i) at the wavelength λ; and optionally iii) recovering the cross-linked alkyd resin obtained.