Benefit agent containing delivery particle
Benefit agent containing delivery particles that can be supplied as slurries, compositions comprising such particles, and processes for making and using such particles and compositions.
1. A composition comprising a consumer product adjunct material and benefit agent containing delivery particles comprising a core and a shell encapsulating said core, said benefit agent containing delivery particles comprising:
a) based on total benefit agent containing delivery particle core weight from 0.1% to 0.9% polyvinyl alcohol; said polyvinyl alcohol based on total encapsulated benefit agent particle core weight having at least one of the following properties:
(i) a hydrolysis degree from about 55% to about 99%;
(ii) a viscosity of from about 40 mPa·s to about 120 mPa·s in 4% water solution at 20° C.;
(iii) a degree of polymerization of from about 1,500 to about 2,500;
(iv) number average molecular weight of from about 65,000 Da to about 110,000 Da;
b) said benefit agent containing delivery particles having a volume weighted mean particle size from about 0.5 microns to about 100 microns,
said benefit agent containing delivery particles' shell comprising, said polyvinyl alcohol and one or more polyacrylate polymers, said core comprising, based on total core weight, greater than 10% of a partitioning modifier that comprises a material selected from the group consisting of propan-2-yl tetradecanoate, vegetable oil, modified vegetable oil, and mixtures thereof;
said composition being a consumer product.
2. The composition of claim 1 wherein said partitioning modifier comprises propan-2-yl tetradecanoate.
3. The composition according to claim 1 wherein said shell comprises a polyacrylate.
4. The composition according to claim 1 , wherein said shell comprises a polymer derived from a material that comprises one or more multifunctional acrylate moieties.
5. The composition according to claim 1 , wherein said shell comprises a polymer derived from a material that comprises one or more multifunctional acrylate and/or methacrylate moieties.
6. The composition according to claim 1 , wherein said benefit agent containing delivery particles having a volume weighted mean particle size from about 5 microns to about 45 microns or a volume weighted mean particle size from about 25 microns to about 60 microns, said composition comprising, based on total composition weight, from about 0.1% to about 35% of a fabric softener active.
7. The composition according to claim 1 , said composition comprising, based on total composition weight, from about 5% to about 95% of a surfactant.
8. The composition according to claim 1 wherein said composition comprises, based on total composition weight, from about 5% to about 20% water, said composition being encased in a film.
9. The composition according to claim 1 , said composition comprising a liquid and/or gel and a film, said film encasing said liquid and/or gel, optionally said liquid or gel comprising a suspended solid.
10. The composition according to claim 1 , wherein said benefit agent containing delivery particles have a volume weighted mean particles size from about 2 microns to about 40 microns, said composition comprising based on total composition weight, from about 5% to about 95% free water and from about 0.5% to about 25% of a builder.
11. The composition according to claim 1 , comprising, based on total composition weight, a material selected from the group consisting of a hueing dye, a structurant, a perfume delivery system and mixtures thereof.
12. The composition according to claim 1 , wherein said benefit agent containing delivery particles are produced by a radical polymerization process that comprises the step of combining, based on total radical polymerization process acrylate monomer reactants, from about 50% to about 100% of a hexa-functional urethane acrylate and/or a penta-functional urethane acrylate, from about 0% to about 25% of a methacrylate that comprises an amino moiety and from about 0% to about 25% of an acrylate comprising a carboxyl moiety, with the proviso that the sum of the hexa-functional urethane acrylate and/or penta-functional urethane acrylate, methacrylate that comprises an amino moiety and acrylate comprising a carboxyl moiety, is 100%.
13. The composition according to claim 12 , wherein said methacrylate that comprises an amino moiety comprises tertiarybutylaminoethyl methacrylate and said acrylate comprising a carboxyl moiety comprises beta carboxyethyl acrylate.
14. The composition according to claim 1 , comprising a deposition aid.
15. The composition according to claim 14 , wherein said deposition aid coats the outer surface of said delivery particles' shell.
16. The composition according to claim 14 , wherein said deposition aid comprises a material selected from the group consisting of poly(meth)acrylate, poly(ethylene-maleic anhydride), polyamine, wax, polyvinylpyrrolidone, polyvinylpyrrolidone co-polymers, polyvinylpyrrolidone-ethyl acrylate, polyvinylpyrrolidone-vinyl acrylate, polyvinylpyrrolidone methylacrylate, polyvinylpyrrolidone/vinyl acetate, polyvinyl acetal, polyvinyl butyral, polysiloxane, poly(propylene maleic anhydride), maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, polyvinyl alcohol, styrene-butadiene latex, gelatin, gum Arabic, carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, sodium alginate, chitosan, casein, pectin, modified starch, polyvinyl methyl ether/maleic anhydride, poly(vinyl pyrrolidone/methacrylamidopropyl trimethyl ammonium chloride), polyvinyl pyrrolidone/dimethylaminoethyl methacrylate, polyvinyl amines, polyvinyl formamides, polyallyl amines and copolymers of polyvinyl amines, and mixtures thereof.
17. The composition according to claim 14 , wherein said deposition aid comprises a material selected from the group consisting of poly(meth)acrylates, poly(ethylene-maleic anhydride), polyamine, polyvinylpyrrolidone, polyvinylpyrrolidone-ethyl acrylate, polyvinylpyrrolidone-vinyl acrylate, polyvinylpyrrolidone methylacrylate, polyvinylpyrrolidone/vinyl acetate, polyvinyl acetal, polyvinyl butyral, polysiloxane, poly(propylene maleic anhydride), maleic anhydride derivatives, co-polymers of maleic anhydride derivatives, polyvinyl alcohol, chitosan, carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, polyvinyl methyl ether/maleic anhydride, poly(vinyl pyrrolidone/methacrylamidopropyl trimethyl ammonium chloride), polyvinyl pyrrolidone/dimethylaminoethyl methacrylate, polyvinyl amines, polyvinyl formamides, polyallyl amines and copolymers of polyvinyl amines, and mixtures thereof.
18. A method of treating and/or cleaning a situs, said method comprising
a) optionally washing, rinsing and/or drying said situs;
b) contacting said situs with the composition according to claim 1 ; and
c) optionally washing, rinsing and/or drying said situs wherein said drying steps comprise active drying and/or passive drying.