3-component coating composition of high solvent resistance...

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 151/08 (2006.01) C08G 18/40 (2006.01) C08G 18/61 (2006.01) C08G 18/62 (2006.01) C09D 167/00 (2006.01)

Patent

CA 2232875

The invention relates to coating compositions comprising: (A) from 5 to 60% by weight of at least one polyester-modified polyacrylate resin consisting of: (a1) from 20 to 60% by weight of at least one polyester and (a2) from 40 to 80% by weight of at least one hydroxyl-containing polyacrylate resin which has been prepared at least in part in the presence of component (a1), (B) from 1 to 35% by weight of at least one hydroxyl- containing, siloxane-modified polyacrylate resin, and (C) from 5 to 50% by weight of an isocyanate crosslinking agent, and to a process for the production of a protective and/or decorative coating with such coating compositions, and to their use as topcoats and refinish coating materials.

L'invention concerne une peinture comportant: (A) 5 à 60 % en poids d'au moins une résine polyacrylate modifiée au polyester composée de (a1) 20 à 60 % en poids d'au moins un polyester et (a2) 40 à 80 % en poids d'au moins une résine polyacrylate contenant un groupe hydroxyle, cette résine étant produite au moins partiellement en présence de la composante (a1), (B) 1 à 35 % en poids d'au moins une résine polyacrylate modifiée au siloxane, contenant un groupe hydroxyle, ainsi que (C) 5 à 50 % en poids d'un agent de réticulation d'isocyanate. L'invention concerne également un procédé de production d'une couche de revêtement décorative et/ou protectrice comportant de tels agents de revêtement ainsi que leur utilisation comme peinture de finition et de réparation.

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