Delivery particle

Patent metadata

Field	Value
Publication number	US-2015252313-A1
Application number	US-201514719522-A
Country	US
Kind code	A1
Filing date	May 22, 2015
Priority date	Jul 20, 2010
Publication date	Sep 10, 2015
Grant date	—

Abstract

The present application relates to delivery particles comprising benefit agents, and products comprising such delivery particles, as well as processes for making and using such delivery particles and products comprising such delivery particles. The process of making such particles does not unduly degrade the benefit agent and when such particles are employed in a product, they are stable, yet they release the desired amount of benefit agent when such product is used as intended.

First claim

What is claimed is:

1 . A delivery particle comprising a shell material and one or more matrices, said shell encapsulating or embedding said one or more matrices, said one or more matrices comprising one or more matrix binders and a plurality of matrix benefit agent cores, said matrix benefit agent cores being dispersed in said one or more matrix binders, said delivery particle having a mean particle size distribution of from about 10 microns to about 350 microns.

2 . The delivery particle of claim 1 , wherein:
a) said matrix binder comprises a material selected from the group consisting of a water soluble and/or water dispersible non-reducing polysaccharide, a water soluble and/or water dispersible acrylate derivative and mixtures thereof; b) said shell material comprises a material selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, cellulose acetate, poly(vinyl-alcohol-co-vinylacetate), acrylic acid-ethylene-vinyl acetate copolymer and mixtures thereof; and c) said matrix benefit agent comprises a material selected from the group consisting of a preformed peracid, a metal catalyst, a bleach activator, a bleach booster, a diacyl peroxide, a hydrogen peroxide source and an enzyme.

3 . The delivery particle of claim 2 wherein:
a) said metal catalyst comprises a material selected from the group consisting of dichloro-1,4-diethyl-1,4,8,11-tetraaazabicyclo[6.6.2]hexadecane manganese(II); dichloro-1,4-dimethyl-1,4,8,11-tetraaazabicyclo[6.6.2]hexadecane manganese(II) and mixtures thereof;
b) said bleach booster comprises a material selected from the group consisting of 2-[3-[(2-hexyldodecyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 3,4-dihydro-2-[3-[(2-pentylundecyl)oxy]-2-(sulfooxy)propyl]isoquinolinium, inner salt; 2-[3-[(2-butyldecyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 3,4-dihydro-2-[3-(octadecyloxy)-2-(sulfooxy)propyl]isoquinolinium, inner salt; 2-[3-(hexadecyloxy)-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 3,4-dihydro-2-[2-(sulfooxy)-3-(tetradecyloxy)propyl]isoquinolinium, inner salt; 2-[3-(dodecyloxy)-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 2-[3-[(3-hexyldecyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 3,4-dihydro-2-[3-[(2-pentylnonyl)oxy]-2-(sulfooxy)propyl]isoquinolinium, inner salt; 3,4-dihydro-2-[3-[(2-propylheptyl)oxy]-2-(sulfooxy)propyl]isoquinolinium, inner salt; 2-[3-[(2-butyloctyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 2-[3-(decyloxy)-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt; 3,4-dihydro-2-[3-(octyloxy)-2-(sulfooxy)propyl]isoquinolinium, inner salt; 2-[3-[(2-ethylhexyl)oxy]-2-(sulfooxy)propyl]-3,4-dihydroisoquinolinium, inner salt and mixtures thereof;
c) said bleach activator comprises a material selected from the group consisting of tetraacetyl ethylene diamine (TAED); benzoylcaprolactam (BzCL); 4-nitrobenzoylcaprolactam; 3-chlorobenzoylcaprolactam; benzoyloxybenzenesulphonate (BOBS); nonanoyloxybenzenesulphonate (NOBS); phenyl benzoate (PhBz); decanoyloxybenzenesulphonate (C 10 -OBS); benzoylvalerolactam (BZVL); octanoyloxybenzenesulphonate (C 8 -OBS); perhydrolyzable esters; 4-[N-(nonaoyl) amino hexanoyloxy]-benzene sulfonate sodium salt (NACA-OBS); dodecanoyloxybenzenesulphonate (LOBS or C 12 -OBS); 10-undecenoyloxybenzenesulfonate (UDOBS or C 11 -OBS with unsaturation in the 10 position); decanoyloxybenzoic acid (DOBA); (6-octanamidocaproyl)oxybenzenesulfonate; (6-nonanamidocaproyl)oxybenzenesulfonate; (6-decanamidocaproyl)oxybenzenesulfonate and mixtures thereof;
d) said preformed peracid comprises a material selected from the group consisting of peroxymonosulfuric acids; perimidic acids; percabonic acids; percarboxilic acids and salts of said acids;
e) said diacyl peroxide comprises a material selected from the group consisting of dinonanoyl peroxide, didecanoyl peroxide, diundecanoyl peroxide, dilauroyl peroxide, dibenzoyl peroxide, di-(3,5,5-trimethyl hexanoyl) peroxide and mixtures thereof;
f) said hydrogen peroxide source comprises a material selected from the group consisting of a perborate, a percarbonate, a peroxyhydrate, a persulfate and mixtures thereof; and
g) said enzyme comprises a material selected from the group consisting of peroxidases, proteases, lipases, phospholipases, cellobiohydrolases, cellobiose dehydrogenases, esterases, cutinases, pectinases, mannanases, pectate lyases, keratinases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, glucanases, arabinosidases, hyaluronidase, chondroitinase, laccases, amylases, and mixtures thereof.

4 . The delivery particle of claim 2 , wherein:
a) said polyvinyl alcohol comprises a polyvinyl alcohol variant having a degree of hydrolysis from about 80 mol % to about 99 mol %; and a molecular weight from about 10,000 gram/mol to about 750,000 gram/mol; b) said polyvinyl acetate comprises a polyvinyl acetate variant having a degree of polymerization from about 150 to about 5,000; and c) said cellulose acetate comprises a cellulose acetate variant having a molecular weight from about 30,000 to about 50,000 gram/mol.

5 . The delivery particle of claim 2 wherein:
a) said water soluble and/or water dispersible non-reducing polysaccharide comprises a material selected from the group consisting of xanthan gum, diutan gum, guar gum, gellan gum, carrageenan, synergistic gum systems and mixtures thereof; and
b) said water soluble and/or water dispersible acrylate derivative has a glass transition temperature from about 50° C. to about 130° C.

6 . The delivery particle of claim 2 , said matrix binder having a centrifuge retention capacity from about 2 gram/gram to about 500 gram/gram.

7 . The delivery particle of claim 1 , wherein said delivery particle comprises:
a) a single matrix comprising one or more matrix binders and a plurality of matrix benefit agent cores that comprise the same or a different material; or b) a plurality of matrices, each of said matrices independently comprising one or more matrix binders and a plurality matrix benefit agent cores that comprise the same or a different material, said plurality of matrices being encapsulated by or embedded in said shell material.

8 . The delivery particle of claim 1 , said delivery particle having a stability index of from about 0.80 to about 1.

9 . The delivery particle of claim 1 , said delivery particle having a release index of from about 0.25 to about 1.

10 . The delivery particle of claim 1 , said delivery particle having a matrix to shell material mass ratio of from about 20:80 to about 90:10.

11 . The delivery particle of claim 1 , said delivery particle having a matrix binder to shell mass ratio of from about 50:50 to about 3:97.

12 . The delivery particle of claim 1 , said delivery particle comprising an additional outer layer, said outer layer comprising a second shell material, a deposition aid polymer and/or mixtures thereof.

13 . The delivery particle of claim 12 , wherein said deposition aid polymer comprises polyvinylformamide.

14 . A consumer product comprising the delivery particle of claim 1 and an adjunct ingredient.

15 . A consumer product according to claim 14 , said consumer product comprising a material selected from the group consisting of an external structuring system, an anti-agglomeration agent and mixtures thereof.

16 . A consumer product according to claim 15 , wherein said external structuring system comprises a hydrogenated castor oil derivative.

17 . A cons

Assignees

• Procter & Gamble

Inventors

• Fernandez Prieto Susana
• Simoncelli Alberto
• Vega Jose Luis
• Smets Johan

Classifications

• C11D3/3955

  Organic bleaching agents (C11D3/3951 takes precedence) · CPC title

• C11D17/0039 Primary

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

• C11D3/38672

  Granulated or coated enzymes · CPC title

• C11D3/3935

  granulated, coated or protected · CPC title