Alkoxy silane adhesive compositions
AssigneeLord Corporation
InventorFred H. Sexsmith
Life of this patent
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Abstract
An adhesive composition useful for bonding various substrates which contain an alkoxy silane compound and an unsaturated acid compound. A preferred embodiment of the invention is an aqueous formulation containing a low molecular weight alkoxy silane compound, a low molecular weight unsaturated acid compound, and water. An example of the alkoxy silane compound is aminopropyl triethoxysilane while an example of the unsaturated acid compound is methacrylic acid. The adhesive composition is particularly effective in bonding non-sulfurcured elastomeric materials such as polyol- and peroxide-cured elastomers to metal surfaces.
Claims16
An aqueous adhesive composition consisting essentially of an alkoxy silane compound, an unsaturated acid compound and water, wherein the alkoxy silane compound corresponds to the following formula:
- ##STR2## wherein R.sub.1 is a divalent aliphatic hydrocarbon residue having from about 1 to 10 carbon atoms;
- R.sub.2, R.sub.3, and R.sub.4 are the same or different monovalent aliphatic hydrocarbon residues of sufficient molecular weight so that the silane is stable during preparation of the adhesive composition and yet do not prejudice hydrolysis of the silane under conditions of use of the adhesive composition;
- and X is an amino or alkylamino group.
An aqueous adhesive composition comprising from about 25 to 75 percent by weight of solute of aminopropyl triethoxysilane, from about 75 to 25 percent by weight of solute of methacrylic acid, and water in an amount sufficient to create an aqueous formulation having a total solids content ranging from about 2 to 15 percent.
Dependencies are inferred from the claim text.