Copper phthalocyanine blue reactive dye
AssigneeSumitomo Chemical Company, Limited
InventorsToshio Nakamatsu, Naoki Harada, Yasuo Tezuka
Life of this patent
Estimating the term…
Abstract
A turquoise blue reactive dye represented by a free acid of the formula, ##STR1## wherein [CuPc] is a copper phthalocyanine nucleus, W is ##STR2## in which R.sub.1 and R.sub.2 are each a hydrogen atom or a methyl group and i is an integer of 2 to 6 both inclusive, Y.sub.1 and Y.sub.2 are each a hydrogen atom, a methyl, methoxy or sulfonic acid group, l and m are each a number of 0 to 3, and n is a number of 1 to 3, provided that l+m+n is not more than 4. This dye is suitable for dyeing cellulose fibers to produce a turquoise blue dyed product superior in fastnesses, acid stability, build-up property, level dyeing property, and low-temperature dyeability.
Claims4
A compound represented by a free acid of the formula, ##STR29## wherein [CuPc] is a copper phthalocyanine nucleus, W is ##STR30## in which R.sub.1 and R.sub.2 are each a hydrogen atom or a methyl group and i is an integer of 2 to 6 both inclusive, Y.sub.1 and Y.sub.2 are each a hydrogen atom, a methyl, methoxy or sulfonic acid group, l and m are each a number of 0 to 3, and n is a number of 1 to 3, provided that l+m+n is not more than 4.
A compound represented by a free acid of the formula, ##STR31## wherein l and m are each a number of 0 to 3, and n is a number of 1 to 3, provided that l+m+n is not more than 4.
A compound represented by a free acid of the formula, ##STR32## wherein l and m are each a number of 0 to 3, n is a number of 1 to 3, provided that l+m+n is not more than 4.
A compound represented by a free acid of the formula, ##STR33## wherein l and m are each a number of 0 to 3, and n is a number of 1 to 3, provided that l+m+n is not more than 4.
Dependencies are inferred from the claim text.