Aminopropyltrimethoxy silane primer composition and coated articles made therewith
AssigneeGeneral Electric Company
InventorMartin G. Meder
Life of this patent
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Abstract
A primer composition of gamma-aminopropyltrimethoxysilane dissolved in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm.sup.3).sup.1/2, for example, N,N'-dimethylacetamide, useful for bonding coating compositions to substrates. A superior bond is formed between a condensation cure silicone rubber and a polyimide film substrate when a primer composition of gamma-aminopropyltrimethoxysilane dissolved in N,N'-dimethylacetamide is first applied to the surface of the polyimide film and dried and cured thereon.
Claims25
A primer composition consisting essentially of gamma-aminopropyltrimethoxysilane dissolved in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm.sup.3).sup.1/2.
A method for priming a surface to improve bonding of a coating material thereto, comprising wetting the surface with a solution of gamma-aminopropyltrimethoxysilane in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm.sup.3).sup.1/2 prior to applying a coating material to the surface and thereafter drying the surface to remove the aprotic solvent and curing the gamma-aminopropyltrimethoxysilane.
A method of bonding condensation cure silicone to a resin substrate comprising applying a solution of gamma-aminopropyltrimethoxysilane in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm.sup.3).sup.1/2 to the resin substrate;
- drying the resin substrate to remove the aprotic solvent;
- curing the gamma-aminopropyltrimethoxysilane;
- applying the condensation cure silicone to the resin substrate;
- and curing the silicone.
Dependencies are inferred from the claim text.