Self-photoinitiating water-dispersable acrylate ionomers and...

Details Self-photoinitiating water-dispersable acrylate ionomers and... Self-photoinitiating water-dispersable acrylate ionomers and...

C - Chemistry, Metallurgy

08

F

C08F 20/10 (2006.01)

Patent

CA 2564314

The invention detailed herein comprises a family of novel multifunctional acrylate ionomeric resins, which are water-dispersible, and have built-in photoinitiator. The inventive resins are made self-photoinitiating by their reaction with .beta.-keto esters (e.g., acetoacetates), .beta.-diketones (e.g., 2,4-pentanedione), .beta.-keto amides (e.g., acetoacetanilide, acetoacetamide), and/or other .beta.-dicarbonyl compounds that can participate in the Michael addition reaction as ~Michael donors.~. These water-dispersable resins cure under standard ultraviolet (UV) cure conditions to give tack-free coatings without the addition of traditional photoinitiators. The present invention further relates to the use of these resins in coatings.

L'invention ici décrite concerne une famille de nouvelles résines ionomères d'acrylate multifonctionnelles, lesquelles sont hydrodispersables et comportent un photoinitiateur intégré. Les résines de l'invention sont rendues auto-photoinitiatrices par leur réaction avec des .beta.-céto esters (par exemple, acétoacétates), .beta.-dicétones (par exemple, 2,4-pentanedione), .beta.-céto amides (par exemple, acétoacétanilide, acétoacétamide), et/ou d'autres composés .beta.-dicarbonyle pouvant participer à la réaction d'addition de Michael en tant que donneurs Michael . Ces résines hydrodispersables durcissent dans des conditions normalisées de durcissement aux ultraviolets (UV) pour donner des revêtements non poisseux sans l'addition de photoinitiateurs classiques. La présente invention concerne également l'utilisation de ces résines dans des revêtements.

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