Benefit agent delivery particles comprising dextran

Patent metadata

Field	Value
Publication number	US-9351910-B2
Application number	US-201214239558-A
Country	US
Kind code	B2
Filing date	Jul 30, 2012
Priority date	Aug 24, 2011
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

The invention provides a composition comprising a benefit agent delivery particle comprising dextran as a delivery aid. 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 comprising:
at least one delivery aid and
an aminoplast polymer;
wherein the at least one delivery aid comprises dextran;
wherein the dextran is located at the outer surface of the particle; and
wherein the dextran is an α-D-1,6-glucose-linked glucan with 1-3-branch linkages.

2. A particle according to claim 1 wherein the dextran has a molecular weight above 5 kD.

3. A particle according to claim 1 which comprises a perfume.

4. A particle according to claim 1 which comprises a core and a shell.

5. A composition comprising:
a) a particle according to claim 1 , and,
b) 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.

6. A laundry treatment composition comprising:
a) a particle according to claim 1 ,
b) at least one anionic or non-ionic surfactant, and,
c) an enzyme selected from the group consisting of cellulase, mannanase and mixtures thereof.

7. A laundry treatment composition according to claim 6 wherein the composition is a liquid or gel.

8. A hair treatment composition comprising:
a) a particle according to claim 1 ,
b) at least one anionic or non-ionic surfactant.

9. A process comprising:
a) encapsulating a perfume oil using emulsion polymerization to form core-shell particles, and,
b) forming a further polymer layer on the outer surface of the core shell-particles in the presence of dextran to form the benefit agent delivery particles according to claim 1 .

10. A particle according to claim 2 , wherein the dextran has a molecular weight above 20 kD.

Assignees

• Chen Honggang
• Jones Christopher Clarkson
• Pan Xiaoyun
• Wang Jinfang
• Conopco Inc

Inventors

• Chen Honggang
• Jones Christopher Clarkson
• Pan Xiaoyun
• Wang Jinfang

Classifications

• A61K2800/654

  The particulate/core comprising macromolecular material · CPC title

• A61K8/66

  Enzymes · CPC title

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title

• A61K8/0241 Primary

  Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes) · CPC title

• A61Q5/02

  Preparations for cleaning the hair · CPC title