Blended dyed product of fiber dyeable with disperse dye and polyurethane fiber and dyeing method therefor
AssigneeAsahi Kasei Kabushiki Kaisha
InventorKiyoshi Yoshida
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Abstract
A mixed fiber article dyed with disperse dye, composed of fiber dyeable with disperse dye and polyurethane fiber, having a color fastness to a perspiration-alkali test of grade 3 or higher according to the JIS L-0848-A Method and having a surface color shade of 20 or less in terms of L value determined by spectro-colorimetry. The dyed mixed fiber article containing polyurethane fiber can be prepared by dyeing a mixed fiber article composed of disperse dyeable fiber and polyurethane fiber, such as a co-knitted fabric, either in a dye bath in the presence of polyvalent metallic compound and tannic acid or after the co-knitted fabric has been treated in a bath containing polyvalent metallic compound and tannic acid.
Claims10
A dyed mixed fiber article composed of fiber dyeable with disperse dye and polyurethane fiber that is not an elastomeric polyester ether fiber wherein the dyed mixed fiber article has a color fastness to a perspiration-alkali according to the JIS L-0848-A Method of grade 3 or higher and a dyed color shade of 20 or less in terms of L value determined by a spectro-colorimetry, and is dyed with a disperse dye.
A method for dyeing a mixed fiber article composed of fiber dyeable with disperse dye and polyurethane fiber that is not an elastomeric polyester ether fiber comprising sequentially treating the mixed fiber article in a bath containing both tannic acid and polyvalent metallic compound and dyeing the mixed fiber article with a disperse dye or dyeing the mixed fiber article in a dye bath containing disperse dye in the presence of tannic acid and polyvalent metallic compound.
Dependencies are inferred from the claim text.