| 摘要 |
<p>A primer composition comprising (A) 100 parts by weight of a reactive acrylic resin having a backbone copolymer chain prepared from two alkyl methacrylates different in the number of carbon atoms and a side chain containing a prescribed amount of hydroxyl and at least one aromatic ring, (B) 100 to 500 parts by weight of a silane compound prepared by reacting an aminosilane having two amino groups with a dialkoxyepoxysilane and a trialkoxyepoxysilane at a prescribed ratio, (C) 10 to 300 parts by weight of a bisphenol A type epoxy resin having an epoxy equivalent of 1000 to 2000g/eq, and (D) 100 to 500 parts by weight of carbon black. This composition is excellent in storage stability, can retain excellent adhesion for a period from the application thereof to that of a sealant, and exhibits excellent weather resistance.</p> |
