Coloring agent for dope-dyeing viscose rayon
AssigneeNippon Shokubai Kagaku Kogyo Co., Ltd.
InventorsIwao Fujikawa, Mitsuo Kushino, Yasuhiro Yamamoto
Life of this patent
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Abstract
A coloring agent for the dope-dyeing viscose rayon, comprising minute spherical cured particles of an amino resin produced from formaldehyde and at least one amino compound selected from the group consisting of benzoguanamine, melamine, and urea and colored with a dye, a viscose composition containing the coloring agent, a viscose rayon obtained by spinning the composition, and a method for manufacture thereof.
Claims10
A dope-dyeing viscose rayon spinning composition, produced by incorporating in the viscose 0.1 to 10 parts by weight, based on 100 parts by weight of the viscose, of a coloring agent comprising minute spherical cured particles of an amino resin produced from formaldehyde and at least one amino compound selected from the group consisting of benzoguanamine, melamine, and urea and colored with a dye.
A colored viscose rayon, produced by uniformly dispersing in the viscose rayon 1 to 30 parts by weight, based on 100 parts by weight of the viscose rayon, of a coloring agent comprising minute spherical cured particles of an amino resin produced from formaldehyde and at least one amino compound selected from the group consisting of benzoguanamine, melamine and urea and colored with a dye.
Dependencies are inferred from the claim text.