Coating agents which can be hardened by the addition of...

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/67 (2006.01) A61K 6/09 (2006.01) C07C 265/14 (2006.01) C07C 275/60 (2006.01) C08G 18/78 (2006.01) C08G 18/81 (2006.01) C09D 175/16 (2006.01)

Patent

CA 2356685

The invention relates to compounds comprising isocyanate groups or capped isocyanate groups, allophanate groups and radically polymerizable C-C double covalent bonds, whereby the C-C double covalent bonds are activated by a carbonyl group bonded directly thereon or by an O-atom in ether function (activated double covalent bonds), derived from polyisocyanates and alcohols A which, in addition to the alcohol group, carry another activated double covalent bond (compounds (I)). The invention also relates to radiation-hardenable preparations and coating agents which contain compounds (I), to methods for coating while using these substances, and to coated articles produced according to these methods. The invention additionally relates to the use of compounds (I) in radiation-hardenable materials such as in casting materials, dental materials, composite materials, sealants, adhesives, fillers, printing inks, in photostructurable materials such as solder resists, photoresists, photopolymeric printing plates, and stereolithographic resins.

L'invention concerne des composés renfermant des groupes isocyanates ou des groupes isocyanates coiffés, des groupes allophanates et des doubles liaisons C-C pouvant subir une polymérisation radicalaire. Les doubles liaisons C-C peuvent être activées par un groupe carbonyle directement fixé sur elles ou par un atome d'O faisant partie d'une fonction éther (doubles liaisons activées). Ces composés sont dérivés de polyisocyanates et d'alcools A, qui portent une autre double liaison activée en plus du groupe alcool (composés (I)). L'invention concerne également des préparations et des matériaux de revêtement durcissables par rayonnement, qui renferment les composés (I); un procédé de revêtement faisant appel auxdits matériaux; et des articles revêtus fabriqués selon ledit procédé. L'invention concerne aussi l'utilisation des composés (I) dans des matériaux durcissables par rayonnement, tels que matériaux coulés, matériaux dentaires, matériaux composites, matériaux d'étanchéité, adhésifs, mastics et encres d'imprimerie, ainsi que dans des matériaux photopolymérisables tels que matériaux de soudure, photorésines, plaques d'impression photopolymères et résines pour stéréolithographie.

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