Urethane acrylate gel coat resin and method of making

Details Urethane acrylate gel coat resin and method of making Urethane acrylate gel coat resin and method of making

C - Chemistry, Metallurgy

08

G

C08G 18/42 (2006.01) C08G 18/67 (2006.01) C08J 7/04 (2006.01) C09D 175/16 (2006.01)

Patent

CA 2494031

An improved urethane acrylate gel coat resin, its method of manufacture, and its use in gel coat compositions are disclosed. The urethane acrylate gel coat resin contains terminal acrylate moieties and is the reaction product of an oligoester of weight average molecular weight about 200 to about 4000, a diisocyanate, and a hydroxyalkyl (meth)acrylate. The gel coat resin is used in gel coat compositions that exhibit good weatherability and color stability after cure.

L'invention concerne une résine pour couche de gel d'acrylate d'uréthène, un procédé permettant de la produire et son utilisation dans des compositions de couches de gel. Ladite résine pour couche de gel d'acrylate d'uréthène contient des fractions acrylate terminales et est le produit de réaction d'un oligo-ester de poids moléculaire moyen d'environ 200 à 4.000, d'un diisocyanate et d'un (meth)acrylate d'hydroxyalkyle. La résine pour couche de gel s'utilise dans des compositions de couche de gel qui manifestent une bonne aptitude à résister aux intempéries et une bonne stabilité après durcissement.

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