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US 10,081,785 B2Granted
Dye polymer
AssigneeConopco, Inc.
InventorsStephen Norman Batchelor, Jayne Michelle Bird, Karen Maria Devine
Life of this patent
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Abstract
The present invention provides dye polymers.
Claims14
A dye polymer comprising a polyethylene imine covalently bound to a reactive dye, the polyethylene imine having from 6 to 1000000 amine nitrogen atoms, wherein from 20 to 95 mol % of the totality of protons of primary and secondary amine nitrogen atoms of an unsubstituted polyethylene imine are substituted by iso-propyl alcohol groups, and wherein the dye polymer has one of a blue colour or a violet colour.
A method comprising the steps of:
- (i) treating a textile with an aqueous dye polymer solution comprising from 10 ppb to 5000 ppm of a dye polymer,
- wherein the dye polymer comprises a polyethylene imine covalently bound to a reactive dye, the polyethylene imine having from 6 to 1000000 amine nitrogen atoms,
- wherein from 20 to 95 mol % of the totality of protons of primary and secondary amine nitrogen atoms of an unsubstituted polyethylene imine are substituted by iso-propyl alcohol groups,
- wherein the dye polymer has one of a blue colour or a violet colour, and
- wherein the aqueous dye polymer solution further comprise from 0.0 g/L to 6 g/L of a surfactant;
- and,
- (ii) optionally rinsing and drying the textile.
4 more elements
Dependencies are inferred from the claim text.