Polymeric hair dyes
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United States of America Patent
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Jan 17, 2012
Grant Date -
May 12, 2011
app pub date -
Jan 7, 2009
filing date -
Jan 17, 2008
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Abstract
, independently from each other are an anion; a and b independently from each other are a number from 1 to 3; m is a number from 0 to 5000; n is a number from 0 to 5000; and p is a number from 1 to 5000; wherein the sum of m+n+p≧3. The dyes are distinguished by their depth of shade and their good fastness properties to washing, such as, for example, fastness to light, shampooing and rubbing.
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