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US 7,022,206 B2Granted
Coolant resistant and thermally stable primer composition
AssigneeLord Corporation
InventorZhiqiang M. Wang
Life of this patent
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Abstract
A coolant-resistant and thermally stable primer composition comprising an organic-functional silane, preferably the reaction product of at least one amino-functional silane and at least one isocyanato-functional silane, is provided. The primer composition may additionally comprise a phenoxy resin, a phenolic resin and talc. A method for bonding an elastomer to a metal also is provided.
Claims20
A primer composition, comprising:
- a phenolic resin, a phenoxy resin, and an organic-functional silane adduct which is the reaction product of (1) an isocyanatesilane and a non-isocyanatesilane which is reactive with isocyanate groups, or (2) reaction product of a molar excess of a non-isocyanate organofunctional silane with a polyisocyanate, wherein adduct (2) is characterized by the absence of free isocyanate groups.
A thermally stable primer composition, comprising:
- a phenolic resin, a phenoxy resin, surface-treated talc and a silane adduct prepared by reacting an organofunctional silane selected from the group consisting of hydroxyfunctional silane and mercaptofunctional silane with an isocyanato-functional silane or polyisocyanate.
Dependencies are inferred from the claim text.