Photocurable composition

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 59/14 (2006.01) C08G 59/24 (2006.01) C08G 59/42 (2006.01) C08G 59/62 (2006.01) C08L 63/10 (2006.01) C09D 163/10 (2006.01)

Patent

CA 2734404

A method for the preparation of a photocurable resin by a reaction comprising the following steps i) reacting a mixture of a novolak type epoxy resin (A) and a dicyclopentadiene-phenol glycidylether resin (B) with ii) an advancement component (C) containing at least 2 phenolic hydroxyl groups per molecule; iii) reacting with an unsaturated monocarboxylic acid (D); and iv) esterification of the unsaturated group containing resin obtained from the steps of i) to iii) with a polycarboxylic acid anhydride or a carboxylic acid anhydride (E) is disclosed.

L'invention concerne un procédé de préparation d'une résine photodurcissable par une réaction comprenant les étapes suivantes : i) mise en réaction d'un mélange d'une résine époxy de type novolaque (A) et d'une résine de dicyclopentadiène-phénol glycidyléther (B) avec ii) un composant d'avancement (C) contenant au moins deux groupes hydroxyles phénoliques par molécule ; iii) mise en réaction avec un acide monocarboxylique insaturé (D) ; et iv) estérification de la résine contenant le groupe insaturé, obtenue à l'issue des étapes i) à iii), avec un anhydride d'acide polycarboxylique ou un anhydride d'acide carboxylique (E).

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