Personal care compositions and methods
Methods of making personal care compositions including microcapsules and methods of enhancing the efficacy of the microcapsules in said personal care compositions.
1. A method for forming a packaged antiperspirant composition wherein the antiperspirant composition is made via split stream manufacturing process; the method comprising:
forming an antiperspirant composition by combining an antiperspirant, a structurant, a solvent, and a plurality of microcapsules;
transferring the antiperspirant composition to a package;
wherein the antiperspirant composition is subjected to a temperature of not more than 60° C. for 24 hours or less prior to the transfer into the package.
2. The method of claim 1 , wherein the temperature of the composition is from about 20° C. to about 60° C. prior to transfer.
3. The method of claim 1 , wherein the antiperspirant active is combined with the microcapsules prior to being combined with the structurant and solvent.
4. The method of claim 3 , wherein the composition further comprises a malodor reducing agent, a moisture-triggered fragrance technology, or a combination thereof.
5. The method of claim 4 , wherein the moisture-triggered fragrance technology is selected from the group consisting of cyclic oligosaccharides, starches, polysaccharide-based encapsulation systems, and combinations thereof.
6. The method of claim 3 , wherein the composition further comprises a volatile silicone.
7. The method of claim 6 , wherein the composition is an anhydrous personal care composition selected from the group consisting of a soft-solid deodorant, a soft-solid antiperspirant, an invisible solid deodorant, and an invisible solid antiperspirant.
8. The method of claim 1 , wherein the microcapsules are spray-dried.
9. The method of claim 1 , wherein the microcapsules are in the form of a powder with a water content of less than 15% by weight of the powder.
10. The method of claim 1 , wherein the composition further comprises a malodor reducing agent selected from the group consisting of pantothenic acid, petrolatum, menthyl acetate, uncomplexed cyclodextrin, complexed cyclodextrin, talc, silica, and combinations thereof.
11. The method of claim 1 , wherein the microcapsules comprise a core material and a shell; wherein the core material comprises a fragrance.
12. The method of claim 11 , wherein the core material further comprises an oil soluble material selected from the group consisting of mono, di- and tri-esters of C 4 -C 24 fatty acids with glycerine; butyl oleate; hydrogenated castor oil; castor oil; mineral oil; capryllic triglyceride; vegetable oil; geranyl palmitate; silicone oil; isopropyl myristate; soybean oil; hexadecanoic acid; methyl ester; isododecane; and combinations thereof.
13. The method of claim 11 , wherein the shell comprises a shell material selected from the group consisting of polyacrylates; polyethylenes; polyamides; polystyrenes; polyisoprenes; polycarbonates ; polyesters; polyureas; polyurethanes; polyolefins; polysaccharides; epoxy resins; vinyl polymers; urea cross-linked with formaldehyde or gluteraldehyde; melamine cross-linked with formaldehyde; gelatin-polyphosphate coacervates optionally cross-linked with gluteraldehyde; gelatin-gum Arabic coacervates; cross-linked silicone fluids; polyamine reacted with polyisocyanates; acrylate monomers polymerized via free radical polymerization; silk; wool; gelatin; cellulose; proteins; and combinations thereof.
14. The method of claim 11 , wherein the shell comprises a reaction product of a first mixture in the presence of a second mixture comprising an emulsifier, the first mixture comprising a reaction product of i) an oil soluble or dispersible amine with ii) a multifunctional acrylate or methacrylate monomer or oligomer, an oil soluble acid and an initiator, the emulsifier comprising a water soluble or water dispersible acrylic acid alkyl acid copolymer, an alkali or alkali salt, and optionally a water phase initiator.
15. The method of claim 14 , wherein the amine comprises an aminoalkyl acrylate or an aminoalkyl methacrylate.
16. The method of claim 14 , wherein said amine is a diethylaminoethyl methacrylate, dimethylaminoethyl methacrylate, or tertiarybutyl aminoethyl methacrylate.
17. The method of claim 11 , wherein the shell comprises a polyacrylate material.