Method for preparing patination materials and patination material
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United States of America Patent
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Mar 5, 2013
Grant Date -
Aug 11, 2005
app pub date -
Apr 7, 2003
filing date -
Apr 9, 2002
priority date (Note) -
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Abstract
The present invention relates to a method for preparing an artificial patination material to substrates, preferably made from copper or copper alloys and a patination material. The raw material is a copper salt, which reacts with an alkali metal hydroxide. The precipitate is dispersed with powerful mixing and an addition of a dispersing agent. An oxidative agent like manganese dioxide is used, and carbon is used as an agent for catalyzing natural patina forming. Metal compounds are used to achieving desired color and/or color tinge. The invention relates also to the corresponding patination material.
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