Stable aqueous liquid composition of reactive dyes containing β-sulfatoethylsulfonyl groups

Claim 2

An aqueous, liquid fiber-reactive dye composition which is stable to decomposition consisting essentially of 5 to 45% by weight of a water-soluble, fiber-reactive dyestuff having from 1 to 3 --SO 2 CH 2 CH 2 OSO 3 H groups, or a mixture of such dyestuffs; 0 to 10% by weight of water-soluble inert inorganic salt; and 45 to 95% by weight of water; said liquid dye composition having a pH of about 2.5 to about 4.5 and being substantially free of buffer substances.

Claim 3

A composition according to claim 1 wherein said inert inorganic salt is selected from alkali metal or ammonium chlorides or sulfates or mixtures thereof.

Claim 4

A composition according to claim 2 which contains 0 to 6% inert inorganic salt.

Claim 5

A composition according to claim 3 wherein said water-soluble, fiber-reactive dyestuff has, in its free acid form, the formula (HO 3 S) m --F--(SO 2 CH 2 CH 2 OSO 3 H) n wherein F is the chomophoric radical of a monoazo, disazo, anthraquinone, or phthalocyanine dyestuff, or a copper, nickel, chromium or cobalt metal complex thereof, m is an integer from 1 to 4 and n is an integer from 1 to 3.

Claim 6

A composition according to claim 4 wherein m is 1 and n is 1.

Claim 7

A composition according to claim 1 wherein said dyestuff, in its free acid form, has a formula selected from the group consisting of ##STR5## wherein Ar is ##STR6## R f is --SO 2 CH 2 CH 2 OSO 3 H; R is independently selected from lower alkyl, lower alkoxy, bromo, chloro, nitro, trifluoromethyl, lower alkylamino, carboxy and sulfo; R 1 is independently selected from amino, lower alkylamino, lower alkanoyl amino, benzoyl amino, and benzoyl amino substituted by chloro, bromo, nitro, trifluoromethyl, lower alkyl or lower alkoxy; R 2 is independently selected from R and R 1 ; R 3 is H, --NHCH 2 CH 2 OH, --N(CH 2 CH 2 OH) 2 , ##STR7## --NHCH 2 CH 2 OSO 3 H, --N(CH 2 CH 2 OSO 3 H) 2 , --NHCH 2 CH 2 CN' or --N(CH 2 CH 2 CN) 2 ; R 4 is lower alkyl, carboxy, lower alkoxy carbonyl, or carbamoyl; R 5 is H or OH; Me is Cu, Ni, Co, or Cr; m is independently 0, 1 or 2; n is independently 0, 1 or 2; p is independently 0 or 1; q is independently 0 or 1, provided that at least one q in a given structure is 1; and x and y are independently 1 or 2, and z is 0, 1 or 2, provided that x+y+z=3 or 4.

Claim 8

The composition of claim 6 wherein Me is Cu.

Claim 9

A composition according to claim 1 wherein said dyestuff, in its free acid form, has a formula selected from the group consisting of ##STR8##

Claim 10

A composition according to claim 8 which contains 10 to 20% of said dyestuff, 0 to 6% of said inert inorganic salt, and 75 to 90% water.

Claim 11

A composition according to claim 8 which contains 30 to 40% of said dyestuff, 0 to 6% of said inert inorganic salt, and 55-70% water.