Primer composition for glass
AssigneeSunstar Giken Kabushiki Kaisha
InventorsMasahiro Ito, Shingo Tsuno
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Abstract
Primer composition for glass comprising a silane coupling agent, a reaction product of a polyisocyanate and a silane compound, a film-forming agent, and an acidic carbon black having pH 2.5 to 4. Said primer composition has extremely high weatherability and is useful as a primer for glass, particularly for applying to window glass of automobiles.
Claims4
A primer composition for glass which comprises a silane coupling agent selected from the group consisting of epoxysilanes and silane compounds having a functional group active to an epoxy group, a reaction product of a polyisocyanate and a silane compound having a functional group active to an isocyanate group, a film-forming agent, and 2% to 10% by weight, based on the total weight of the composition, of an acidic carbon black having pH 2.5 to 4 in admixture with a conventional organic solvent.
Dependencies are inferred from the claim text.