Methods and compositions for adhering polysulfides or polythioethers to thermoplastic or thermoset materials
AssigneeThe Boeing Company
InventorsDaniel James Cowan, Bart Stevens, Jason Alan Bolles, Robert Frederick Rivers
Life of this patent
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Abstract
Disclosed herein are methods and compositions for preparing a surface comprising thermoplastic or thermoset material to receive a polysulfide or polythioether sealant or coating, the method comprising applying to the surface an activating composition consisting of a tetraalkoxide of a Group 4 metal, a complex of an alkoxide of a Group 4 metal, or a combination thereof.
Claims26
A method for adhering a polysulfide or polythioether sealant to a surface comprising a thermoplastic material selected from the group consisting of polyolefins, polycarbonates, polyacrylates, polyamides, polyetherimides, polyaryletherketones, epoxies, polyimides, polyamide-imides, polyether imides, and perfluoro-alkoxy alkanes, the method consisting of
- applying to the surface an activating composition consisting of a solution of a tetraalkoxide of a Group 4 metal, a complex of an alkoxide of a Group 4 metal, or a combination thereof in an alcohol;
- allowing the composition to dry on the surface;
- optionally mechanically treating the thermoplastic material before or after applying the activating composition;
- and
- applying a polysulfide or polythioether sealant to the surface.
A method for coating a surface comprising a thermoplastic material with a polysulfide or polythioether sealant wherein the thermoplastic material is selected from the group consisting of polyolefins, polycarbonates, polyacrylates, polyamides, polyetherimides, polyaryletherketones, epoxies, polyimides, polyamide-imides, polyether imides, and perfluoro-alkoxy alkanes, the method consisting of
- applying to the surface an activating composition consisting of a solution of a tetraalkoxide of a Group 4 metal, a complex of an alkoxide of a Group 4 metal, or a combination thereof in an alcohol,
- optionally mechanically treating the thermoplastic material before or after applying the activating composition;
- and
- applying a polysulfide or polythioether sealant to the surface carrying the activating composition.
A method for adhering a polythioether sealant to a surface comprising a thermoplastic material selected from the group consisting of polyolefins, polycarbonates, polyacrylates, polyamides, polyetherimides, polyaryletherketones, epoxies, polyimides, polyamide-imides, polyether imides, and perfluoro-alkoxy alkanes, the method consisting of
- applying to the surface an activating composition consisting of a solution of a tetraalkoxide of a Group 4 metal, a complex of an alkoxide of a Group 4 metal, or a combination thereof in an alcohol;
- optionally mechanically treating the thermoplastic material before or after applying the activating composition;
- and
- applying a polythioether sealant to the surface.
A method for adhering a polysulfide or polythioether sealant to a surface consisting of a thermoplastic material selected from the group consisting of polyolefins, polycarbonates, polyacrylates, polyamides, polvetherimides, polyaryletherketones, epoxies, polyimides, polyamide-imides, polyether imides, and perfluoro-alkoxy alkanes, the method consisting of
- applying to the surface an activating composition consisting of a solution of a tetraalkoxide of a Group 4 metal, a complex of an alkoxide of a Group 4 metal, or a combination thereof in an alcohol;
- allowing the composition to dry on the surface;
- optionally mechanically treating the thermoplastic material before or after applying the activating composition;
- and
- applying a polysulfide or polythioether sealant to the surface.
A method for adhering a polysulfide or polythioether sealant to a surface comprising a thermoplastic material selected from the group consisting of polyolefins, polycarbonates, polyacrylates, polyamides, polyetherimides, polyaryletherketones, epoxies, polyimides, polyamide-imides, polyether imides, and perfluoro-alkoxy alkanes, the method consisting of
- activating the thermoplastic material to generate a layer of activated thermoplastic material, wherein the activating comprises applying to the thermoplastic material an activating composition consisting of a solution of a tetraalkoxide of a Group 4 metal, a complex of an alkoxide of a Group 4 metal, or a combination thereof in an alcohol;
- allowing the composition to dry;
- optionally mechanically treating the thermoplastic material before or after applying the activating composition;
- and
- applying a polysulfide or polythioether sealant to the surface.
A method for adhering a polysulfide or polythioether sealant to a surface comprising a thermoplastic material selected from the group consisting of polyolefins, polycarbonates, polyacrylates, polyamides, polyetherimides, polyaryletherketones, epoxies, polyimides, polyamide-imides, polyether imides, and perfluoro-alkoxy alkanes, the method consisting of
- activating the thermoplastic material to generate a layer of activated thermoplastic material, wherein the activating comprises applying to the thermoplastic material an activating composition consisting of a solution of tetra-n-propylzirconate in n-propanol;
- allowing the composition to dry;
- optionally mechanically treating the thermoplastic material before or after applying the activating composition;
- and
- applying a polysulfide or polythioether sealant to the surface.
Dependencies are inferred from the claim text.