UV-HARDENABLE DISPERSION BASED ON POLYISOCYANATE

• Main Authors: LUEHMANN ERHARD, BLUM HARALD, SOMMER STEFAN, IRLE CHRISTOPH DR
• Format: Patent
• Language: English
• Published: 11.09.2008
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; 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; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide an aqueous UV-hardenable dispersion and to provide its use for producing a coating agent, in particular the use of a coating for a ligneous substrate. SOLUTION: The dispersion comprises the reaction product of one or more polyisocyanates of which at least one polyisocyanate is an oligomeric polyisocyanate of hexamethylene diisocyanate with urethane, biuret, iminooxadiazindione and/or isocyanurate structural units, one or more monohydroxy-functional compounds containing (meth)acryloyl groups, at least one component which has a hydrophilising effect on the basis of incorporated (potentially) ionic groups, and comprises at least one further isocyanate-reactive group and/or at least one component which comprises non-ionically hydrophilically acting groups and includes at least one further isocyanate-reactive group, one or more difunctional and/or poly functional amines or hydroxyamines as chain extender, and optionally other monomeric, oligomeric and/or polymeric substances, which may optionally also contain further unsaturated groups. COPYRIGHT: (C)2008,JPO&INPIT