Self-dispersible hardenable epoxide resins

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 59/10 (2006.01) C08G 59/06 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2356241

The invention relates to hardenable resins which are self-dispersible in water and to a method for producing them. The inventive epoxide resins are special compounds which can be obtained by reacting the following: (a) 1.0 equivalent of epoxide resin, (b) 0.01-1.0 equivalent of a polyfunctional phenol and (c) 0.005-0.5 equivalent of an amine- epoxide adduct, the amine-epoxide adduct (c) representing a reaction product of an aromatic polyepoxide with a polyoxyalkyleneamine. The invention is characterised in that the compounds used to produce the amine-epoxide adduct (c), i.e. the aromatic polyepoxide and the polyoxyalkyleneamine, are used according to an equivalent ratio of 1:0.10 to 1:0.28.

L'invention concerne des résines époxydes durcissables à dispersion spontanée dans l'eau, ainsi que le procédé de fabrication associé. Ces résines sont constituées de composés particuliers que l'on obtient en faisant réagir (a) 1,0 équivalent de résine époxyde, (b) 0,01-1,0 équivalent d'un phénol polyfonctionnel et (c) 0,005-0,5 équivalent d'un produit d'addition amine-époxyde. Ledit produit d'addition (c) est un produit de réaction d'un polyépoxyde aromatique avec une polyoxyalkylènamine. Le procédé est caractérisé par le fait que pour produire le produit d'addition amine-époxyde (c), on utilise des composés, à savoir le polyépoxyde aromatique et la polyoxyalkylènamine, selon un rapport compris entre 1:0,10 et 1:0,28.

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