FABRICATION OF MIRROR-LIKE COATINGS
First Claim
Patent Images
1. A method of providing a substrate with a multi-layer coating, the method comprising the steps of:
- a) forming a base coating comprised of epoxy on a surface of the substrate;
b) forming a decorative mirror-like coating on the base coating by reacting an amine complex of silver, a reducing sugar and an acetylenic compound; and
c) forming a surface coating on the decorative mirror-like coating which is capable of protecting the decorative mirror-like coating against scratching.
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Abstract
Multi-layer coatings suitable for imparting a decorative, durable mirror-like finish to substrates such as metals are provided which contain a base coating of epoxy, a mirror-like coating, and a scratch-resistant surface coating.
19 Citations
21 Claims
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1. A method of providing a substrate with a multi-layer coating, the method comprising the steps of:
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a) forming a base coating comprised of epoxy on a surface of the substrate; b) forming a decorative mirror-like coating on the base coating by reacting an amine complex of silver, a reducing sugar and an acetylenic compound; and c) forming a surface coating on the decorative mirror-like coating which is capable of protecting the decorative mirror-like coating against scratching. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of providing a metal substrate with a multi-layer coating, the method comprising the steps of:
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a) pretreating a surface of the metal substrate by contacting the surface with a silane; b) forming a base coating on the pretreated surface by first forming a lower layer comprised of leveling agent and solidifier on the pretreated surface followed by an upper layer on top of the lower layer, the upper layer being comprised of reactive diluent, leveling agent and epoxy resin; c) forming a decorative mirror-like coating on the base coating by contacting the base coating with a stannous ion-containing solution and then a mixture comprised of [Ag(NH3)2]+, glucose, carboxylic acid and butynediol; d) forming a surface coating on the decorative mirror-like coating by contacting the decorative mirror-like coating with a surface coating composition obtained by at least one silane, at least one tetraalkyl silicate, at least one alkylalkoxysilane with water and acid, contacting the surface coating composition with the decorative mirror-like coating, and heating the substrate.
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21. A substrate having a multi-layer coating on at least one surface, the multi-layer coating comprising a base coating comprised of cured epoxy, a decorative mirror-like coating comprised of silver on top of the base coating, and a surface coating comprised of polysilicone on top of the decorative mirror-like coating.
Specification