Hydroxyl functional oil polyol acrylic graft copolymers

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 289/00 (2006.01) C09D 191/00 (2006.01)

Patent

CA 2753911

Hydroxyl functional oil polyol acrylic graft copolymers are disclosed which can be used to produce coating compositions and coated surfaces. In some embodiments, the coating compositions are used to coat substrates such as packaging materials and the like for the storage of food and beverages. The hydroxyl functional oil polyol acrylic graft copolymers can be prepared by heating an epoxidized vegetable oil and a hydroxyl functional material in the presence of an acid catalyst to form a hydroxyl functional oil polyol, and reacting the hydroxyl functional oil polyol with a mixture of an ethylenically unsaturated monomer component in the presence of an initiator to form the hydroxyl functional oil polyol acrylic graft copolymer. Coating compositions can be prepared by crosslinking the hydroxyl functional oil polyol acrylic graft copolymers with a crosslinker.

La présente invention concerne des copolymères acryliques greffés de polyols d'huiles hydroxylées convenant à la production de compositions de revêtement et de surfaces enduites. Dans certains modes de réalisation, les compositions de revêtement conviennent à l'enduction de substrats tels que des matériaux d'emballage et analogues destinés au stockage d'aliments et de boissons. Pour élaborer de tels copolymères acryliques greffés de polyols d'huiles hydroxylées, on chauffe une huile végétale époxydée et une matière hydroxylée en présence d'un catalyseur acide de façon à former un polyol d'huile hydroxylée, et on fait réagir le polyol d'huile hydroxylée avec un mélange comprenant un composant monomère éthyléniquement insaturé en présence d'un amorceur de façon à former le copolymère acrylique greffé de polyol d'huile hydroxylée. Les compositions de revêtement peuvent s'élaborer par réticulation des copolymères acryliques greffés de polyols d'huiles hydroxylées au moyen d'un réticulant.

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