Primer with long cure time for polymeric substrates

Details Primer with long cure time for polymeric substrates Primer with long cure time for polymeric substrates

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) C08J 7/04 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2493291

The invention relates to a primer composition, comprising at least one polyurethane prepolymer (A) with isocyanate terminal groups, at least one aliphatic polyisocyanate (B), at least one aromatic polyisocyanate (C) and at least one reaction product (D), which may be obtained form at least one epoxysilane and at least one aminosilane or from at least one epoxysilane and at least one mercaptosilane. The invention relates to the use of the primer composition as primer for adhesives, sealants and floor coatings.

L'invention concerne une composition d'apprêt qui contient au moins un prépolymère de polyuréthanne (A) comportant des groupes terminaux isocyanate, au moins un polyisocyanate (B) aliphatique, au moins un polyisocyanate (C) aromatique, et au moins un produit de réaction (D) obtenu à partir d'au moins un époxysilane et d'au moins un aminosilane ou à partir d'au moins un époxysilane et d'au moins un mercaptosilane. L'invention concerne également l'utilisation de ladite composition d'apprêt en tant qu'apprêt pour adhésifs, matériaux d'étanchéité et revêtements de sols.

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