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US 5,314,980 AGranted
Epoxy coating compositions with metal-containing stabilizers
AssigneeMinnesota Mining and Manufacturing Company
InventorEric D. Morrison
Life of this patent
Estimating the term…
Abstract
A coating composition comprises an epoxy silane, an amine hardener that can react with the epoxy silane to form a cross-linked coating, and a stabilizer that includes a sufficient amount of a metal component to delay cross-linking between the epoxy silane and the amine hardener. The coating composition has a shelf life of at least 3 days.
Claims38
A coating composition comprising:
- (a) an epoxy component selected from the group consisting of epoxy terminated silanes, aqueous prehydrolysis products of epoxy terminated silanes, pre-polymerized epoxy terminated silanes, and epoxy terminated siloxanes;
- (b) an amine hardener that can react with the epoxy component to form a cross-linked coating;
- and
- (c) a sufficient amount of a metal component-containing stabilizer to delay crosslinking between the epoxy component and the amine hardener.
1 more element
A method of extending the shelf life of a one-part coating composition comprising an epoxy component and an amine hardener capable of cross-linking with the epoxy component, the method comprising the steps of:
- a) providing an epoxy component selected from the group consisting of epoxy terminated silanes, aqueous prehydrolysis products of epoxy terminated silanes, prepolymerized epoxy terminated silanes, and epoxy terminated siloxanes;
- b) mixing the epoxy component with a stabilized amine hardener that is prepared by blending an amine hardener and a metal component-containing compound such that the amine hardener is rendered temporarily unavailable for cross-linking with the epoxy component.
Dependencies are inferred from the claim text.