Glazing units, methods of making the same and adhesion promoters therefor
AssigneeLibbey-Owens-Ford Co.
InventorsPaul T. Mattimoe, Theodore J. Motter, John J. Hofmann, Siegfried H. Herliczek
Life of this patent
Estimating the term…
Abstract
An automobile glazing structure that includes at least one sheet of glass, that incorporates a multi-layer protective laceration inhibiting shield bonded to its inboard glass surface to present an exposed inboard surface, and that has areas of at least one surface of a layer of the shield treated with the reaction product of a film forming resin and a compound capable of hydrolysis followed by condensation as an adhesion promoting primer.
Claims11
A transparent, temperature stable, glazing structure for automobiles that is free of apparent distortion and birefringence color;
- comprising the combination, with a surface of glass that is to become the inboard glass surface when said glazing structure is mounted in an automobile, of a relatively soft and extensible penetration resistant protective plastic cover on said surface that includes a layer of relatively high adhesion plastic selected from the group consisting of polyvinyl butyral, ionomer resin, polyurethane and polyvinyl chloride, heat and pressure laminated to said inboard glass surface of said structure, a more durable layer of stretched plastic selected from the group consisting of polyethylene terephthalate, polyurethane, cellulose triacetate, fluorinated copolymers of ethylene and propylene, copolymers of acrylic acid esters, and polyvinyl fluoride arranged with its major axis of stretch at right angles to the horizontal dimension of said glazing structure on said relatively high adhesion plastic layer, and a relatively harder abrasion resistant coating layer 1/2 to 14 mils thick selected from the group consisting of (a) mixtures of polysilicic acid and copolymers of fluorinated monomers with compounds containing alcohol groups, (b) hydrolysis and condensation products of methyltriethoxy silane and (c) a mixture of hydrolysis and condensation products of methyltriethoxy silane and polysilicic acid on said more durable layer of stretched plastic;
- and an adhesion promoter comprising a solution of a reaction product of a film forming resin with a compound capable of hydrolysis followed by condensation on a surface of one of said last mentioned layers.
A method of sealing a glazing structure, having an exposed surface of a mixture of polysilicic acid and copolymers of fluorinated monomers with compounds containing secondary alcohol groups, in a frame with a polysulfide mastic as the adhesive;
- comprising applying an adhesion promoting material selected from the group consisting of the reaction product of a solid epoxy resin having an epoxide equivalent of 1550 to 2000 with gamma-aminopropyltriethoxy silane, the reaction product of a solid epoxy resin having an epoxide equivalent of 1550 to 2000 with N-beta (aminoethyl)-gamma-aminopropyl trimethoxy silane, the reaction product of a solid epoxy resin having an epoxide equivalent of 1550 to 2000 with substituted aminoalkyltrimethoxy silane, the reaction product of a liquid epoxy resin having an epoxide equivalent of 175 to 210 with N-beta (aminoethyl)-gamma-aminopropyl trimethoxy silane, the reaction product of a liquid epoxy resin having an epoxide equivalent of 175 to 210 with gamma-aminopropyltriethoxy silane, the reaction product of a liquid polysulphide resin with gamma-aminopropyltriethoxy silane, and the reaction product of a liquid polysulphide with tetraisopropyl titanate, to areas of said exposed surface that are to be in contact with said mastic, and then sealing said structure in said frame.
Dependencies are inferred from the claim text.