| 摘要 |
Compound of the formula: <IMAGE> (I) in which Pc represents a metallized or non-metallized phthalocyanine residue, X represents a hydrogen or alkali metal atom, one of the substituents R1 and R2 represents a linear alkyl or alkenyl residue containing 12 to 18 carbon atoms, and the other represents a hydrogen atom, n represents a whole number or a fraction from 0 to 2 inclusive, m represents a whole number or a fraction from 2 to 4 inclusive, and the sum m + n is equal to or greater than 3; mixtures thereof and derivatives resulting from the action of an SO3X group on an amino group of a compound of formula (I) or on a compound of the formula:
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