Dyed regenerated collagen fiber, artificial hair, and method for dye-fixing treatment of dyed regenerated collagen fiber
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United States of America Patent
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Feb 14, 2017
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Jul 9, 2009
app pub date -
Apr 2, 2007
filing date -
Mar 31, 2006
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Abstract
A dyed regenerated collagen fiber of the invention is a regenerated collagen fiber dyed with a dye having an excellent dye fastness. An aspect of the invention is directed to a dyed regenerated collagen fiber including at least one kind of compound selected from the group consisting of polyalkylenepolyamine compounds, condensation compounds of polyalkylenepolyamine and dicyandiamide, and acid addition salt compounds of the condensation compounds.
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