Encapsulates

Patent metadata

Field	Value
Publication number	US-2016130537-A1
Application number	US-201614988007-A
Country	US
Kind code	A1
Filing date	Jan 5, 2016
Priority date	May 20, 2013
Publication date	May 12, 2016
Grant date	—

Abstract

The present application relates processes that can be used to produce encapsulated benefit agents comprising a core and a shell that encapsulates said core, encapsulated benefit agents produced by such process and products comprising such encapsulated benefit agents as well as methods of making and using such products. Such process can be used to produce particles that offer the desired protection and release benefits when used in a varity of products.

First claim

What is claimed is:

1 . A population of encapsulated benefit agents having a population diameter coefficient of variation from about 6% to about 50%, said population of encapsulated benefit agents comprising encapsulated benefit agents having a mean diameter of from about 3 micrometers to about 300 micrometers, said encapsulated benefit agent comprising a core and a shell that encapsulates said core, said shell comprising an acrylate derivative, said shell having a thickness of from about 0.3 micrometers to about 15 micrometers, and a shell thickness coefficient of variation from about 2% to about 30%.

2 . The population of encapsulated benefit agents of claim 1 having a population diameter coefficient of variation from about 8% to about 35%, said population of encapsulated benefit agents comprising encapsulated benefit agents having a mean diameter of from about 5 micrometers to about 240 micrometers, said shell having a thickness of from about from about 1 micrometer to about 8 micrometers and a shell thickness coefficient of variation from about 4% to about 25%.

3 . The population of encapsulated benefit agents of claim 2 having a population diameter coefficient of variation from about 12% to about 25%, said population of encapsulated benefit agents comprising encapsulated benefit agents having a mean diameter of from about 10 micrometers to about 120 micrometers, said encapsulated benefit agent comprising a core and a shell that encapsulates said core, said shell comprising an acrylate derivative, in one aspect a film forming polymer that is an acrylate derivative, said shell having a thickness of from about 1.5 micrometers to about 6 micrometers and a shell thickness coefficient of variation from about 6% to about 20%.

4 . The population of encapsulated benefit agents of claim 1 where said acrylate derivative is a film forming polymer.

5 . A population of encapsulated benefit agents according to claim 1 wherein said core comprises a material selected from the group consisting of a perfume, a hueing agent, a brightener, a silicone, an enzyme and mixtures thereof.

6 . A population of encapsulated benefit agents according to claim 5 wherein:
a) said perfume comprises a material selected from the group consisting of prop-2-enyl 3-cyclohexylpropanoate, (4aR,5R,7aS,9R)-octahydro-2,2,5,8,8,9a-hexamethyl-4h-4a,9-methanoazuleno(5,6-d)-1,3-dioxole, (3aR,5aS,9aS,9bR)-3a,6,6,9a-tetramethyl-2,4,5,5a,7,8,9,9b-octahydro-1H-benzo[e][1]benzofuran, 4-methoxybenzaldehyde, benzyl 2-hydroxybenzoate, 2-methoxynaphthalene, 3-(4-tert-butylphenyl)propanal, 3a,6,6,9a-tetramethyl-2,4,5,5a,7,8,9,9b-octahydro-1H-benzo[e][1]benzofuran, 3,7-dimethyloct-6-en-1-ol, 3,7-dimethyloct-6-enenitrile, 3-(4-tert-butylphenyl)butanal, 3-(4-propan-2-ylphenyl)butanal, (E)-1-(2,6,6-trimethyl-1-cyclohexa-1,3-dienyl)but-2-en-1-one, decanal, (E)-1-(2,6,6-trimethyl-1-cyclohex-3-enyl)but-2-en-1-one, (5E)-3-methylcyclopentadec-5-en-1-one, 2,6-dimethyloct-7-en-2-ol, ethyl 2-methylpentanoate, ethyl 2-methylbutanoate, 1,3,3-trimethyl-2-oxabicyclo[2,2,2]octane, 2-methoxy-4-prop-2-enylphenol, 3a,4,5,6,7,7a-hexahydro-4,7-methano-1H-indenyl acetate, 3-(3-propan-2-ylphenyl)butanal, a,4,5,6,7,7a-hexahydro-1H-4,7-methanoinden-1-yl propanoate, (2E)-3,7-dimethylocta-2,6-dien-1-ol, (12E)-1-oxacyclohexadec-12-en-2-one, [2-[1-(3,3-dimethylcyclohexyl)ethoxy]-2-methylpropyl]propanoate, hexyl acetate, 2-(phenylmethylidene)octanal, hexyl 2-hydroxybenzoate, (E)-4-(2,6,6-trimethyl-1-cyclohex-2-enyl)but-3-en-2-one, (E)-4-(2,6,6-trimethyl-1-cyclohexenyl)but-3-en-2-one, (E)-3-methyl-4-(2,6,6-trimethyl-1-cyclohex-2-enyl)but-3-en-2-one, 1-(2,3,8,8-tetramethyl-1,3,4,5,6,7-hexahydronaphthalen-2-yl)ethanone, propan-2-yl 2-methylbutanoate, (1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexan-1-ol, (E)-2-ethyl-4-(2,2,3-trimethyl-1-cyclopent-3-enyl)but-2-en-1-ol, 2,4-dimethylcyclohex-3-ene-1-carbaldehyde, 3,7-dimethylocta-1,6-dien-3-ol, 3,7-dimethylocta-1,6-dien-3-yl acetate, 1-((3R,3aS,7R,8aS)-2,3,4,7,8,8a-hexahydro-3,6,8,8-tetramethyl-1H-3a,7-methanoazulen-5-yl)-ethanone, methyl 3-oxo-2-pentylcyclopentaneacetate, 2-methylundec anal, 2-[2-(4-methyl-1-cyclohex-3-enyl)propyl]cyclopentan-1-one, 1-(5,5-dimethyl-1-cyclohexenyl)pent-4-en-1-one, 2-cyclohexylidene-2-phenylacetonitrile, 2-phenylethanol, 3,7-dimethyloctan-3-ol, 5-heptyloxolan-2-one, (2-tert-butylcyclohexyl)acetate and mixtures thereof;
b) said hueing agent comprises a material selected from the group consisting of a small molecule dye, a polymeric dye, a dye clay conjugate, a pigment or mixtures thereof;
c) said brightener comprises a material selected from the group consisting of disodium 4,4′-bis-(2-sulfostyryl) biphenyl; benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-[4-[(2-hydroxyethyl)methylamino]-6-(phenylamino)-1,3,5-triazin-2-y]amino]-, disodium salt; disodium 4,4′-bis{[4-anilino-6-[bis(2-hydroxyethyl)amino-s-triazin-2yl]-amino}-2,2′-stilbenedisulfonate; disodium 4,4′-bis[(4-anilino-6-(N-2-hydroxyethyl-N-methylamino)-s-triazine-2-yl)amino]2,2′-stilbenedisulfonate; disodium 4,4′-bis{[4-anilino-6-methylamino-s-triazin-2-yl]-amino}-2,2′-stilbenedisulfonate; disodium 4,4′-bis[4,6-di-anilino-s-triazin-2-yl]-2,2′-stilbenedisulfonate; disodium 4,4′-bis{[4-anilino-6-morpholino-s-triazin-2-yl}-amino}-2,2′-stilbenedisulfonate and mixtures thereof;
d) said silicone comprises a material selected from the group consisting of non-functionalized siloxane polymers, functionalized siloxane polymers, silicone resins, silicone solvents, cyclic silicones and mixtures thereof; and
e) 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.

7 . A population of encapsulated benefit agents according to claim 6 , wherein:
a) said small molecule dye comprises a material selected from the group consisting of dyes falling into the Colour Index (C.I.) classifications of Direct Blue, Direct Red, Direct Violet, Acid Blue, Acid Red, Acid Violet, Basic Blue, Basic Violet and Basic Red, or mixtures thereof; b) said polymeric dye comprises polymeric dyes selected from the group consisting of polymers containing conjugated chromogens (dye-polymer conjugates) and polymers with chromogens co-polymerized into the backbone of the polymer and mixtures thereof; c) said dye clay conjugate comprises at least one cationic/basic dye and a smectite clay, and mixtures thereof; d) said non-functionalized siloxane polymer comprises polydimethylsiloxane, dimethicone, dimethiconol, dimethicone crosspolymer, phenyl trimethicone, alkyl dimethicone, lauryl dimethicone, stearyl dimethicone, phenyl dimethicone, phenylpropyl substituted dimethicone and mixtures thereof. e) said functionalized siloxane polymer comprises aminosilicones, amidosilicones, silicone polyethers, silicone-urethane polymers, quaternary ABn silicones, amino ABn silicones, and mixtures thereof.

8 . A population of encapsulated benefit agents according to claim 1 wherein said acrylate derivative is derived from the reaction of a mono-functional acrylate monomer, a di-functional acrylate monomer, a tri-functional acrylate monomer, a tetra-functional acrylate monomer, a penta-functional acrylate monomer or mixtures thereof and a photoinitiator.

9 . A population of encapsulated benefit agents according to claim 8 wherein said functional monomer is selected from the group consisting of tertiobutyl cyclohexanol acrylate, 2-(2-ethoxy)ethyl acrylate, C 1

Assignees

• Procter & Gamble

Inventors

• Fernandez Prieto Susana
• Smets Johan
• Tylkowski Bartosz
• Giamberini Marta

Classifications

• C11D3/505

  encapsulated or adsorbed on a carrier, e.g. zeolite or clay · CPC title

• C11D3/40

  Dyes {; Pigments} · CPC title

• C11D3/38672

  Granulated or coated enzymes · CPC title

• C11D17/0039 Primary

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

• C11D3/42

  Brightening agents {; Blueing agents} · CPC title