Patent ID: 8414987

Claim:
A method for improving an adhesion of an adhesive to a cured silicon-containing surface, comprising applying a primer composition to the surface before applying the adhesive; and subjecting the surface to a plasma treatment before or after the composition is applied thereto; wherein the primer composition comprises: a polar organic solvent; an acrylic monomer selected from a group consisting of hydroxymethyl acrylate, hydroxymethyl methacrylate, hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, and combinations thereof; and an amino-containing silane having a formula of (R 1 O) x (R 2 ) y SiR 3 NHR 4 , wherein each R 1 independently represents H, C 1 -C 12 hydrocarbonyl, or aryl, each R 2 independently represents H, O, C 1 -C 12 hydrocarbonyl, or aryl, R 3 represents divalent C 1 -C 6 hydrocarbonyl being substituted or unsubstituted with one or more aryl rings and the carbon atom chain of the hydrocarbonyl can be inserted with one or more aryl rings, R 4 represents H, C 1 -C 12 hydrocarbonyl, amino-C 1 -C 12 hydrocarbonyl, or phenylamino, and x is 1, 2 or 3, y is 0, 1 or 2, and the sum of x and y is 3; wherein the amount of the acrylic monomer ranges from about 0.01 wt % to about 25 wt % and the amount of the amino-containing silane ranges from about 1 wt % to about 35 wt %, based on the total weight of the composition.