High-efficiency perfume capsules

Patent metadata

Field	Value
Publication number	US-2016348043-A1
Application number	US-201615234273-A
Country	US
Kind code	A1
Filing date	Aug 11, 2016
Priority date	Nov 6, 2009
Publication date	Dec 1, 2016
Grant date	—

Abstract

The present application relates to high efficiency particles and compositions, such as consumer products, comprising such high efficiency particles as well as processes for making and using such high efficiency particles and compositions comprising such high efficiency particles. Such high efficiency particles and compositions provide enhanced benefit agent delivery to a situs that is treated with such high efficiency particles and compositions.

First claim

What is claimed is:

1 . An encapsulate comprising a core, a wall having an outer surface and a coating, said wall encapsulating said core, said coating coating the outer surface of said wall, said coating comprising one or more efficiency polymers having the following formula:

wherein:
a) wherein a and b are integers or averages (real numbers) from about 50-100,000;
b) each R 1 is independently selected from H, CH 3 , (C═O)H, alkylene, alkylene with unsaturated C—C bonds, CH 2 —CROH, (C═O)—NH—R, (C═O)—(CH 2 ) n —OH, (C═O)—R, (CH 2 ) n -E, —(CH 2 —CH(C═O)) n —XR, —(CH 2 ) n —COOH, —(CH 2 ) n —NH 2 , —CH 2 ) n —(C═O)NH 2 , the index n is a integer from about 0 to about 24, E is an electrophilic group; R is a saturated or unsaturated alkane, dialkylsiloxy, dialkyloxy, aryl, alkylated aryl, that may further contain a moiety selected from the group consisting of cyano, OH, COOH, NH 2 , NHR, sulfonate, sulphate, —NH 2 , quaternized amines, thiols, aldehyde, alkoxy, pyrrolidone, pyridine, imidazol, imidazolinium halide, guanidine, phosphate, monosaccharide, oligo or polysaccharide;
c) R 2 or R 3 can be absent or present:
(i) when R 3 is present each R 2 is independently selected from the group consisting of —NH 2 , —COO—, —(C═O)—, —O—, —S—, —NH—(C═O)—, —NR 1 —, dialkylsiloxy, dialkyloxy, phenylene, naphthalene, alkyleneoxy; and each R 3 is independently selected the same group as R 1 ;
(ii) when R 3 is absent each R 2 is independently selected from the group consisting of —NH 2 , —COO—, —(C═O)—, —O—, —S—, —NH—(C═O)—, —NR 1 —, dialkylsiloxy, dialkyloxy, phenylene, naphthalene, alkyleneoxy; and each R 3 is independently selected the same group as R 1 ; and
(iii) when R 2 is absent, each R 3 is independently selected the same group as R 1 ;

d) said one or more efficiency polymers having an average molecular mass from about 1,000 Da to about 50,000,000 Da; a hydrolysis degree, when said efficiency polymer is a polyvinyl formamide, of from about 5% to about 95%; and/or a charge density from about 1 meq/g efficiency polymer to about 23 meq/g efficiency polymer.

2 . An encapsulate according to claim 1 , wherein said one or more efficiency polymers is selected from the group consisting of polyvinyl amines, polyvinyl formamides, and polyallyl amines and copolymers thereof.

3 . An encapsulate according to claim 1 , wherein said coating comprises one or more polyvinyl formamides.

4 . An encapsulate according to claim 1 , having a coating to wall ratio of from about 1:200 to about 1:2.

5 . An encapsulate according to claim 1 , wherein;
a) said core comprises a material selected from the group consisting of perfumes; brighteners; dyes; insect repellants; silicones; waxes; flavors; vitamins; fabric softening agents; skin care agents in one aspect, paraffins; enzymes; anti-bacterial agents; bleaches; sensates; and mixtures thereof; b) said wall comprises a material selected from the group consisting of polyethylenes; polyamides; polystyrenes; polyisoprenes; polycarbonates; polyesters; polyacrylates; aminoplasts, in one aspect said aminoplast comprises a polyureas, polyurethane, and/or polyureaurethane, in one aspect said polyurea comprises polyoxymethyleneurea and/or melamine formaldehyde; polyolefins; polysaccharides, in one aspect alginate and/or chitosan; gelatin; shellac; epoxy resins; vinyl polymers; water insoluble inorganics; silicone; and mixtures thereof.

6 . An encapsulate according to claim 5 , wherein said core comprises perfume and said wall comprises melamine formaldehyde and/or cross linked melamine formaldehyde.

7 . An encapsulate according to claim 6 , wherein said core comprises perfume and said wall comprises melamine formaldehyde and/or cross linked melamine formaldehyde, poly(acrylic acid) and poly(acrylic acid-co-butyl acrylate).

8 . A slurry comprising an encapsulate according to claim 1 , said slurry having a zeta potential of from about −10 meV to about +50 meV.

9 . A slurry comprising, based on total slurry weight, a sufficient amount of the encapsulate of claim 1 to provide said slurry with from about 0.05% to about 10% of the efficiency polymer.

10 . An agglomerate comprising an encapsulate according to claim 1 .

11 . A process of making the agglomerate of claim 10 , said process comprising:
a) combining an encapsulate according to claim 1 ; a plasticizer, and, optionally, a binder and/or chelant to form a mixture; b) combining said mixture with said dusting agent; and c) removing a sufficient amount of said plasticizer from said material to yield a product comprising, based on total product weight from 1% to 50% plasticizer.

12 . A consumer product comprising:
a) an encapsulate according to claim 1 ; and b) an adjunct ingredient.

13 . The consumer product of claim 12 , said consumer product comprising a sufficient amount of encapsulate to provide said consumer product with an efficiency polymer level, based on total consumer product weight, of from about 0.0001% to about 0.1%.

14 . A consumer product according to claim 12 , said consumer product comprising a material selected from the group consisting of an anionic surfactant, cationic surfactant, silicone and mixtures thereof, said consumer product having:
a) an anionic surfactant to efficiency polymer ratio of from about 100.000:1 to about 1:1; b) a cationic surfactant to efficiency polymer ratio of from about 100.000:1 to about 1:1; and/or c) a silicone to efficiency polymer ratio of from about 100.000:1 to about 1:1.

15 . A consumer product according to claim 12 wherein said adjunct ingredient is selected from the group consisting of polymers, in one aspect, a cationic polymer, surfactants, builders, chelating agents, optical brighteners, dye transfer inhibiting agents, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleach activators, polymeric dispersing agents, clay soil removal/anti-redeposition agents, brighteners, dye polymer conjugates; dye clay conjugates, suds suppressors, dyes, bleach catalysts, additional perfume and/or perfume delivery systems, structure elasticizing agents, fabric softeners, carriers, hydrotropes, processing aids, rheology modifiers, structurants, thickeners, pigments, water and mixtures thereof.

16 . A consumer product according to claim 15 , said consumer product comprising a rheology modifier, thickener and/or structurant having a high shear viscosity, at 20 sec-1 shear rate and at 21° C., of from 1 to 7000 cps and a viscosity at low shear (0.5 sec-1 shear rate at 21° C.) of greater than 1000 cps, or even 1000 cps to 200,000 cps.

17 . A consumer product according to claim 11 , said consumer product being a fluid detergent and comprising, based on total fluid detergent weight, less then about 80% water.

18 . A method of cleaning or treating a situs comprising optionally washing and/or rinsing said situs, contacting said situs with a composition according to claim 12 , and optionally washing and/or rinsing said situs.

19 . A process of making a coated encapsulate comprising combining an encapsulate according to claim 1 and a one or more efficiency polymers.

20 . A process of making a coated encapsulate according to claim 19 wherein said encapsulate, when combined with said one or more efficiency polymers, is contained in a slurry.

21 . A process of making a coated encapsulate according to claim 20 wherein a

Assignees

• Procter & Gamble

Inventors

• Smets Johan
• Vansteenwinckel Pascale Claire Annick
• Gizaw Yonas
• Hulskotter Frank
• Boeckh Dieter
• Haehnle Hans-Joachim

Classifications

• A61P31/04

  Antibacterial agents · CPC title

• C09B67/0097

  Dye preparations of special physical nature; Tablets, films, extrusion, microcapsules, sheets, pads, bags with dyes · CPC title

• A61K8/8147

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers · CPC title

• A61K8/11

  Encapsulated compositions · CPC title

• C11D1/12

  Sulfonic acids or sulfuric acid esters; Salts thereof · CPC title