Epoxy-amine barrier coatings with aryloxy or aryloate groups

Details Epoxy-amine barrier coatings with aryloxy or aryloate groups Epoxy-amine barrier coatings with aryloxy or aryloate groups

C - Chemistry, Metallurgy

09

D

C09D 163/02 (2006.01) C08G 59/18 (2006.01) C08G 59/24 (2006.01) C08G 59/50 (2006.01) C08J 7/04 (2006.01)

Patent

CA 2206898

Polyepoxide-polyamine gas barrier coatings for use on packaging materials such as polymeric containers are provided with low permeability at relatively low amine to epoxy cure ratios by including substantial aryloxy or aryloate group content. The aryloxy or aryloate content may be provided, for example, by polyglycidyl ether of resorcinol or polyglycidyl ester of phthalic acid.

L'invention présente des enduits faisant obstacle à la pénétration de gaz, à base de polyépoxy-polyamine, utilisables sur des matériaux d'emballage, tels que des containers en polymère, et rendus peu perméables, à des rapports de durcissement amine-époxy relativement faibles, par l'adjonction de substances appartenant au groupe aryloxy ou aryloate en proportions importantes. Un éther polyglycidylique du résorcinol ou un ester polyglycidylique de l'acide phtalique peut constituer cet apport aryloxy ou aryloate.

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