| http://www.w3.org/ns/prov#value | - A method, as claimed in claim 1, wherein for said reactive dyen=1 to 7; and R is a carboxylic acid, an alkali or alkaline earth metal salt of a carboxylic acid, or R is an acid chloride, an acid fluoride, or an acyl azide; or R is a hydroxybenzotriazolyl ester, a succinimidyl ester, a sulfosuccinimidyl ester, an alkali or alkaline earth metal salt of a sulfosuccinimidyl ester, a symmetric anhydrid
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