Free amine-containing polymeric dyes

Claim 2

The process for water fast coloring a proteinaceous fiber substrate which comprises applying to said substrate a solution comprising a solvent selected from the group consisting of water of pH 2.0 to 4 inclusive and a water-organic solvent containing up to 80% by weight of a member of the class of 1 to 4 carbon alkanols, ethylene glycol, propylene glycol and 3 to 5 carbon alkanones, and dissolved therein from 100 ppm to 0.5% by weight of a polymeric colorant comprising a hydrocarbon polymer backbone to which is covalently bonded through amine linkages a plurality (m) of essentially anionic group-free optically chromophoric groups and to which is also covalently bonded a plurality (n) of free primary or lower alkyl secondary amine groups, wherein n is not less than 1/2 m, and n and m are such that their sum is from 20 to 3000 and the polymeric colorant has a molecular weight of not less than 2000 daltons and thereafter rinsing the substrate with water and drying the substrate.

Claim 3

The process of claim 1 wherein said free amine groups are primary amine groups.

Claim 4

The process of claim 1 wherein n is from 1.2 to 4 times m.

Claim 5

The process of claim 1 wherein said polymeric colorant has the structural formula ##STR82## wherein R 1 and R 1 ' independently are selected from hydrogen and lower saturated alkyls of 1 to 4 carbon atoms; R 2 and R 2 ' independently are selected from hydrogen, lower saturated alkyls of 1 to 4 carbon atoms and phenyl; R 3 is selected from a simple carbon to nitrogen single covalent bond, 1 to 4 carbon atom lower saturated alkylene bridges, and a phenylene bridge; R 4 is selected from hydrogen and lower saturated alkyls of 1 to 4 carbon atoms; R 5 is selected from a carbon to carbon single bond, ethylene, a 1 to 4 carbon saturated alkylsubstituted ethylene, a 6-8 carbon aromatic-substituted ethylene, a ##STR83## ethylene wherein R 7 is selected from hydrogen, 1 to 4 carbon alkyls, and --O--CH 3 , an ##STR84## ethylene, and a nitrilo-substituted ethylene, Chrom is an essentially anionic group-free optically chromophoric group and n, p, and m are numbers such that n is at least 1/2 m and the sum of n+m is from 20 to 3000 and the sum of n+m+p is such as to assure a molecular weight of at least 2000 to the colorant molecule.

Claim 6

The process of claim 4 wherein in said polymeric colorant R 1 , R 2 , and R 4 are each hydrogen, R 3 is a carbon to nitrogen single bond, R 5 is a carbon to carbon single bond and n is from 1 to 6 times m and p is from 0 to 2(n+m).

Claim 7

The process of claim 5 wherein the solvent is water of pH 2.0 to 4 inclusive.

Claim 8

The process of claim 5 wherein the solvent is a water-organic solvent made up of water and up to 80% by weight of a member of the class of 1 to 4 carbon alkanols, ethylene glycol, propylene glycol and 3 to 5 carbon alkanones.

Claim 9

The process of claim 1 wherein said proteinaceous fiber is wool.

Claim 10

The process of claim 1 wherein said proteinaceous fiber is hair.