# US 10,501,709 B2 · Laundry liquid composition

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- Number: US 10,501,709 B2
- Document ID: US10501709B2
- Status: Granted
- Kind: B2
- Application number: 15/548,784
- Filed: 2016-02-10
- Published: 2018-08-23
- Granted: 2019-12-10
- Earliest claimed: 2015-02-13
- Assignees: Conopco, Inc.
- Applicants: Conopco, Inc.
- Inventors: Catherine Mary Auty; Stephen Norman Batchelor; Jayne Michelle Bird; Matthew Tynan
- Web page: https://patentgrep.com/patent/US10501709B2

## CPC

- C11D 3/40: Dyes {; Pigments}
- C11D 1/83: Mixtures of non-ionic with anionic compounds
- C11D 3/30: Amines; Substituted amines {; Quaternized amines}
- C11D 3/3723: {Polyamines or polyalkyleneimines}
- C11D 1/04: Carboxylic acids or salts thereof (soap C11D9/00)
- C11D 1/146: {Sulfuric acid esters}
- C11D 1/22: derived from aromatic compounds
- C11D 1/28: Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
- C11D 1/29: Sulfates of polyoxyalkylene ethers
- C11D 1/72: Ethers of polyoxyalkylene glycols
- C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

## Abstract

The present invention concerns liquid laundry compositions with specific surfactant mixtures and dye polymers covalently bound to a polyethylene imine substituted by groups selected from ethyl alcohol and iso-propyl alcohol. The present invention is also related to a domestic laundry method.

## Claims

### Claim 1

A liquid laundry detergent formulation comprising:
(i) from 5 to 70 wt % of a mixture of anionic and non-ionic surfactant, wherein the fraction wt % anionic/wt % nonionic is at least 1 and the anionic surfactants are chosen such that the fraction wt % alkyl ether sulphate/wt % total anionic surfactant is at least 0.5 and the alkyl ether sulphate has from 1.0 EO to 1.9 EO; and,
(ii) from 0.001 to 2.0 wt % of a dye polymer, the 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 57 to 98 mol % of the totality of the protons of the primary and secondary amine nitrogen atoms of the unsubstituted polyethylene imine are substituted by iso-propyl alcohol groups; wherein the reactive dye is an anthraquinone dye of the form:
wherein the A ring is substituted by a reactive group selected from: dichlorotriazinyl; difluorochloropyrimidine; monofluorotrazinyl; monofluorochlorotrazinyl; dichloroquinoxaline; difluorotriazine; monochlorotriazinyl; trichloropyrimidine 2-bromoprop-2-enamido; dibromopropanamido; and, a sulfooxyethylsulfonyl reactive group which is —SO2CH2CH2OSO3Na.

### Claim 2 (depends on 1)

A liquid detergent formulation according to claim 1, wherein the A ring is further substituted by one or more organic groups selected from: the group consisting of C1-C8-alkyl; and, SO3Na.

### Claim 3 (depends on 1)

A liquid detergent formulation according to claim 1, wherein the dye is selected from the group consisting of: Reactive blue 1; Reactive blue 2; Reactive blue 4; Reactive blue 5; Reactive blue 6; Reactive blue 12; Reactive blue 16; Reactive blue 19; Reactive blue 24; Reactive blue 27; Reactive blue 29; Reactive blue 36; Reactive blue 44; Reactive blue 46; Reactive blue 47; Reactive blue 49; Reactive blue 50; Reactive blue 53; Reactive blue 55; Reactive blue 61; Reactive blue 66; Reactive blue 68; Reactive blue 69; Reactive blue 74; Reactive blue 86; Reactive blue 93; Reactive blue 94; Reactive blue 101; Reactive blue 103; Reactive blue 114; Reactive blue 117; Reactive blue 125; Reactive blue 141; Reactive blue 142; Reactive blue 145; Reactive blue 149; Reactive blue 155; Reactive blue 164; Reactive blue 166; Reactive blue 177; Reactive blue 181; Reactive blue 185; Reactive blue 188; Reactive blue 189; Reactive blue 206; Reactive blue 208; Reactive blue 246; Reactive blue 247; Reactive blue 258; Reactive blue 261; Reactive blue 262; Reactive blue 263; Reactive blue 172; Reactive Violet 22; Reactive Violet 31; and, Reactive Violet 34.

### Claim 4 (depends on 1)

A liquid detergent formulation according to claim 1, wherein the polyethylene imine comprises from 15 to 45 amine nitrogen atoms.

### Claim 5 (depends on 1)

A liquid detergent formulation according to claim 1, wherein 57 to 80 mol % of the protons of the primary and secondary amine nitrogen atoms are substituted by iso-propyl alcohol groups.

### Claim 6 (depends on 1)

A liquid detergent formulation according to claim 1, wherein the liquid detergent comprises from 10 to 30 wt % of the mixture of anionic and non-ionic surfactant.

### Claim 7 (depends on 1)

A liquid detergent formulation according to claim 1, wherein the fraction wt % anionic/wt % nonionic is from 2 to 5 and wherein the fraction wt % alkyl ether sulphate/wt % total anionic surfactant from 0.7 to 1.

### Claim 8 (depends on 1)

A liquid detergent formulation according to claim 1, wherein the anionic surfactants are selected from the group consisting of: alkyl ether sulphate (AES); primary alkyl sulphate PAS; soap; methyl ester sulfonate (MES); and, linear alkylbenzene sulfonate (LAS).

### Claim 9 (depends on 1)

A domestic laundry method, the method comprising the steps of:
(i) washing laundry with an aqueous solution of the liquid detergent formulation as defined in claim 1, the aqueous solution comprising from 10 ppb to 5000 ppm of the dye polymer; and, from 0.1 g/L to 6 g/L of the surfactant mixture; and,
(ii) optionally rinsing and drying the laundry.