Aqueous liquid detergent formulation comprising enzyme particles

Patent metadata

Field	Value
Publication number	US-2017191005-A1
Application number	US-201515311841-A
Country	US
Kind code	A1
Filing date	May 18, 2015
Priority date	May 22, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

The present invention relates to an aqueous liquid laundry formulation comprising an ester based laundry ingredient; an effective cleaning amount of protease enzyme; an effective cleaning amount of lipase enzyme; and from 5 to 60 wt % surfactant; wherein at least 70 wt % of the effective cleaning amount of lipase enzyme is encapsulated and separated from the ester based laundry ingredient and the liquid by a coating which is insoluble in the formulation but which dissolves on dilution with the wash; and wherein the laundry formulation comprises at least 20 wt % water.

First claim

1 . An aqueous liquid laundry formulation comprising:
i) an ester based laundry ingredient; ii) an effective cleaning amount of protease enzyme; iii) an effective cleaning amount of lipase enzyme; and iv) from 5 to 60 wt % surfactant; characterised in that at least 70 wt % of the effective cleaning amount of lipase enzyme is encapsulated and separated from the ester based laundry ingredient and the liquid by a coating which is insoluble in the formulation but which dissolves on dilution with the wash; and wherein the laundry formulation comprises at least 20 wt % water.

2 . An aqueous liquid laundry formulation according to claim 1 which further comprises a structurant.

3 . An aqueous liquid laundry formulation according to claim 1 or 2 wherein the coating comprises polyvinyl alcohol, preferably anionically modified polyvinyl alcohol.

4 . An aqueous liquid laundry formulation according to any preceding claim wherein the ester based laundry ingredient comprises a polyester soil release polymer, preferably comprising a poly(propylene terephthalate) midblock and endblocks comprising polyoxyethylene.

5 . An aqueous liquid laundry formulation according to any of claims 1 to 4 wherein the effective cleaning amount of protease enzyme is in contact with the liquid and is not encapsulated.

6 . An aqueous liquid laundry formulation according to any of claims 1 to 5 wherein the effective cleaning amount of protease enzyme comprises hindered protease enzyme.

7 . An aqueous liquid laundry formulation according to any preceding claim wherein at least 80 wt % of the effective cleaning amount of lipase enzyme is encapsulated and separated from the ester based laundry ingredient by the coating, more preferably at least 90 wt % of the effective cleaning amount of lipase enzyme is encapsulated and separated from the ester based laundry ingredient by the coating.

8 . An aqueous liquid laundry formulation according to any preceding claim wherein at least 95 wt % of the effective cleaning amount of lipase enzyme is encapsulated and separated from the ester based laundry ingredient by the coating.

9 . An aqueous liquid laundry formulation according to any of claims 1 to 8 which further comprises non-protease enzymes.

10 . An aqueous liquid laundry formulation according to claim 9 wherein the non-protease enzymes are encapsulated with the effective cleaning amount of lipase enzyme.

11 . An aqueous liquid laundry formulation according to any of claims 3 to 10 wherein the anionic modification to the polyvinyl alcohol coating comprises less than 10 mol % 2-acrylamido-2-methylpropanesulphonic acid or sodium salt thereof.

12 . An aqueous liquid laundry formulation according to any of claims 1 to 11 which further comprises a sequestrant.

13 . An aqueous liquid laundry formulation according to any preceding claim wherein the lipase enzyme coating comprises a thickness of greater than or equal to 5 microns, more preferably the lipase enzyme coating comprises a thickness of greater than or equal to 8 microns, even more preferably the lipase enzyme coating comprises a thickness of greater than or equal to 10 microns.

14 . An aqueous liquid laundry formulation according to any of claim 2 to 13 wherein the structurant comprises citrus pulp.

Assignees

• Conopco Inc Dba Unilever

Inventors

• Foverskov Morten
• Grainger David Stephen
• Lund Henrik
• Wells John Francis

Classifications

• C11D3/38627 Primary

  containing lipase · CPC title

• C11D3/0036

  Soil deposition preventing compositions; Antiredeposition agents · CPC title

• C11D3/3715 Primary

  Polyesters or polycarbonates · CPC title

• C11D3/38618

  Protease or amylase in liquid compositions only · CPC title

• C11D3/38672

  Granulated or coated enzymes · CPC title