Fabric treatment compositions comprising targeted benefit agents

Patent metadata

Field	Value
Publication number	US-9334469-B2
Application number	US-201414164886-A
Country	US
Kind code	B2
Filing date	Jan 27, 2014
Priority date	Aug 18, 2010
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

The invention provides a benefit agent delivery particle comprising hydroxylpropyl cellulose. The benefit agent delivery particle may further comprise a non-polysaccharide polymer, preferably an aminoplast polymer. The benefit agent delivery particle may comprise a perfume. The invention also provides a process for the manufacture of the particles in which perfume oil is encapsulated using emulsion polymerization to form core-shell particles, (in the alternative the perfume may be adsorbed later) and, a further polymer layer is formed on the outer surface of the core shell-particles in the presence of the delivery aid.

First claim

The invention claimed is:

1. A benefit agent delivery particle having at the outer surface of the particle one or more delivery aids,
wherein the delivery aid comprises hydroxy-propyl cellulose with a molecular weight in excess of 40 kD, and
wherein the delivery aid is bound to the particle by a covalent bond.

2. The particle of claim 1 wherein the molar substitution of the hydroxy-propyl cellulose is in the range from 2.8 to 4.0.

3. The particle of claim 1 wherein the molar substitution of the hydroxy-propyl cellulose is above 3.0.

4. The particle of claim 1 wherein the molar substitution of the hydroxy-propyl cellulose is in the range from 3.2 to 3.8.

5. The particle of claim 1 further comprising a non-polysaccharide polymer.

6. The particle of claim 5 wherein the non-polysaccharide polymer is an aminoplast polymer.

7. The particle of claim 1 further comprising a polymer selected from the group consisting of melamine/urea/formaldehyde class, the isocyanate/diol class and polyesters.

8. The particle of claim 7 wherein the isocyanate/diol class polymer is a polyurethane.

9. The particle of claim 1 further comprising a polymer of monomer selected from the group consisting of olefins, ethylene, vinylaromatic monomers, esters of vinyl alcohol with mono- and di-carboxylic acids, esters of α,β-monoethylenically unsaturated mono- and dicarboxylic acids with alcohols, nitriles of α,β-monoethylenically unsaturated carboxylic acids, conjugated dienes, α,β-monoethylenically unsaturated monocarboxylic and dicarboxylic acids and their amides, methacrylic acid and its esters with alcohols and diols, acrylic acid and its esters with alcohols and diols, dimethyl or di-n-butyl maleate, and vinyl-sulfonic acid and its water-soluble salts, and mixtures thereof.

10. The particle of claim 1 which comprises a perfume.

11. The particle of claim 1 which comprises a core and a shell.

12. A composition comprising:
the particle of claim 1 ; and
an enzyme selected from the group consisting of hemicellulase, cellulase, polygalacturonase, xylanase, pectinase, mannanase, pectate lyase, ligninase, pullulanase, pentosanase, arabinosidase, hyaluronidase, chondroitinase, laccase, glycosylhydrolase, amylases, and mixtures thereof.

13. A laundry treatment composition comprising:
the particle of claim 1 ;
at least one anionic or non-ionic surfactant; and
an enzyme selected from the group consisting of cellulase, mannanase and mixtures thereof.

14. The laundry treatment composition of claim 13 wherein the composition is a liquid or gel.

15. A process for producing benefit agent delivery particles comprising:
forming, by emulsion polymerization, core-shell particles; and
forming, in the presence of hydroxy-propyl cellulose, a polymer layer on an outer surface of the core shell-particles so as to result in the production of the benefit agent delivery particles,

wherein the outer surface of the particles have one or more delivery aids,
wherein the delivery aid comprises hydroxy-propyl cellulose with a molecular weight in excess of 40 kD, and
wherein the delivery aid is bound to the particle by a covalent bond.

Assignees

• Conopco Inc

Inventors

• Chen Honggang
• Ferguson Paul
• Jones Christopher Clarkson
• Mealing David Richard Arthur
• Pan Xiaoyun
• Wang Jinfang

Classifications

• C11D17/0039

  Coated compositions or coated components in the compositions, (micro)capsules · CPC title

• C11D3/225

  etherified, e.g. CMC · CPC title

• C11D3/0036

  Soil deposition preventing compositions; Antiredeposition agents · CPC title

• C11D3/3788

  Graft polymers · CPC title

• C11D3/505 Primary

  encapsulated or adsorbed on a carrier, e.g. zeolite or clay · CPC title