Dye polymer

Patent metadata

Field	Value
Publication number	US-9790453-B2
Application number	US-201214002131-A
Country	US
Kind code	B2
Filing date	Feb 23, 2012
Priority date	Mar 10, 2011
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

The present invention relates to polymeric shading dye and their use in laundry applications. The polymers are alkoxylated polyethylene imines and the dyes are reactive dyes.

First claim

We claim:

1. A dye polymer, the dye polymer comprising a core polyamine of which from 90 to 100 mol % of the primary and secondary amines of the core polyamine are alkoxylated and from 0.1 to 30 mol % of the primary and secondary amines of the core polyamine are covalently bound to a reactive dye, wherein the reactive dye is selected from a chromophore selected from the group consisting of: azo; anthraquinone; phthalocyanine; and, triphendioxazine;
wherein a molecular weight of the core polyamine is 500 to 1000;
wherein the core polyamine is a polyethylene-imine; and
wherein the primary and secondary amines of the core polyamine are alkoxylated with polyalkylene oxide chains having repeat units of alkoxy moieties in a range from 5 to 30.

2. A dye polymer according to claim 1 , wherein the reactive dye is selected from the group consisting of: reactive blue; reactive black; reactive red; and, reactive violet dyes.

3. A dye polymer according to claim 1 , wherein the reactive dye is selected from the group consisting of mixtures of: reactive black and reactive red; reactive blue and reactive red; reactive black and reactive violet; and, reactive blue and reactive violet, wherein the number of blue or black dye moieties is in excess of the red or violet dye moieties.

4. A dye polymer according to claim 1 , wherein the reactive dye has reactive group selected from the group consisting of: dichlorotriazinyl; difluorochloropyrimidine; monofluorotrazinyl; dichloroquinoxaline; vinylsulfone; difluorotriazine; monochlorotriazinyl; bromoacrlyamide; and, trichloropyrimidine.

5. A dye polymer according to claim 1 , wherein the reactive is dye blue bis-azo dye of the form

wherein one or both of the A and B rings are substituted by a reactive group.

6. A dye polymer according to claim 1 , wherein the weight average molecular weight of the dye polymer is from 7000 to 70000.

7. A laundry treatment composition comprising:
(i) from 2 to 70 wt % of a surfactant; and,
(ii) from 0.0001 to 20.0 wt % of the dye polymer as defined in claim 1 .

8. A domestic method of treating a textile, the method comprising the steps of:
(i) treating a textile with an aqueous solution of the dye polymer as defined in claim 1 , the aqueous solution comprising from 10 ppb to 5000 ppm, of the dye polymer; and, from 0.0 g/L to 3 g/L of a surfactant; and,
(ii) optionally rinsing and drying the textile.

9. A domestic method of treating a textile according to claim 8 , wherein the aqueous solution comprises a fluorescer in the range from 0.0001 g/l to 0.1 g/l.

Assignees

• Batchelor Stephen Norman
• Meng Sheng
• Tao Qingsheng
• Wang Jinfang
• Conopco Inc

Inventors

• Batchelor Stephen Norman
• Meng Sheng
• Tao Qingsheng
• Wang Jinfang

Classifications

• C11D3/3723

  Polyamines or polyalkyleneimines · CPC title

• C09B69/106

  containing an azo dye · CPC title

• C11D3/40

  Dyes {; Pigments} · CPC title

• C09B69/109

  containing other specific dyes · CPC title

• C09B69/101

  containing an anthracene dye · CPC title