Paint for silver film protection and method
First Claim
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1. A method of protecting a silver film deposited on a substrate to prevent the silver film from delaminating, comprising the steps of:
- a) preparing a paint base by mixing a first cross linkable resin selected from the group consisting of;
alkyd, polyester, acrylic, epoxy and epoxy modified acrylic resins, a second cross linking resin selected from the group consisting of;
melamine-formaldehyde, urea-formaldehyde, isocyanates and amine resins, a modifying resin selected from the group consisting of epoxy and phenoxy resins and a metal carboxylate selected from the group consisting of;
octoates, tallates, rosinates, laurates, oleates, octadecanoates, neodecanoates, linoleates, naphthenoates, versatates and hexanoates;
b) applying the paint base to the silver film;
c) curing the paint base with heat to cross link the resins; and
d) contributing metal II ions from the selected metal carboxylate to the cured paint to thereby prevent the silver film from delaminating.
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Accused Products
Abstract
A paint and method are divulged for protecting the silver film of mirrors. The paint in its preferred embodiment includes a metal carboxylate which will contribute metal ions, namely stannous octoate for the contribution of stannous(II) ions in an amount of 0.5% or greater by weight. Alternate methods of the invention utilize an additional coating over the paint, such as an acrylic, epoxy or blend thereof which is UV curable. In another form of the paint, copper octoate is utilized in a minimum amount of 0.5% by weight for contribution of copper(II) ions.
46 Citations
10 Claims
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1. A method of protecting a silver film deposited on a substrate to prevent the silver film from delaminating, comprising the steps of:
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a) preparing a paint base by mixing a first cross linkable resin selected from the group consisting of;
alkyd, polyester, acrylic, epoxy and epoxy modified acrylic resins, a second cross linking resin selected from the group consisting of;
melamine-formaldehyde, urea-formaldehyde, isocyanates and amine resins, a modifying resin selected from the group consisting of epoxy and phenoxy resins and a metal carboxylate selected from the group consisting of;
octoates, tallates, rosinates, laurates, oleates, octadecanoates, neodecanoates, linoleates, naphthenoates, versatates and hexanoates;b) applying the paint base to the silver film; c) curing the paint base with heat to cross link the resins; and d) contributing metal II ions from the selected metal carboxylate to the cured paint to thereby prevent the silver film from delaminating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification