Protein-based microcapsules
OwnerLaura ETCHENAUSIA, Anaick NICOLAE +3inventors
InventorsLaura ETCHENAUSIA, Anaick NICOLAE, Marlène JACQUEMOND, Valentina VALMACCO, Lahoussine OUALI
Life of this patent
Estimating the term…
Abstract
The present invention relates to a new process for the preparation of protein-based microcapsules. Protein-based microcapsules are also an object of the invention. Perfuming compositions and consumer products comprising said microcapsules, in particular perfumed consumer products in the form of home care or personal care products, are also part of the invention.
Claims15
1- A core-shell microcapsule comprising:
- a core comprising a hydrophobic material, preferably a perfume oil, and
- a polymeric shell comprising a protein chosen in the group consisting of canola protein, sunflower seed protein, fungal protein and mixtures thereof.
2- The core-shell microcapsule according to claim 1, wherein the protein is canola protein.
3- The core-shell microcapsule according to claim 1 or 2, wherein the polymeric shell comprises a material chosen in the group consisting of polyamide, polyurea, polyurethane, polyester, polyacrylate, polysiloxane, polycarbonate, polysulfonamide, polymers of urea and formaldehyde, melamine and formaldehyde, melamine and urea, or melamine and glyoxal and mixtures thereof.
4- The core-shell microcapsule according to anyone of claims 1 to 3, wherein the polymeric shell is a polyamide-based shell.
5- The core-shell microcapsule according to claim 4, wherein the polyamide-based shell is obtained from the reaction between an acyl chloride and at least one amino compound.
6- The core-shell microcapsule according to claim 5, wherein the polyamide-based shell is obtained from the reaction between an acyl chloride and at least two amino compounds.
7- The core-shell microcapsule according to claim 5 or 6, wherein the amino-compound is chosen in the group consisting of ethylene amine having a functionality greater than 3, polyethylenimine, cystamine, cystamine hydrochloride, cystine, cystine hydrochloride, cystine dialkyl ester, cystine dialkyl ester hydrochloride, a xylylene diamine, 1,2-diaminocyclohexane, 1,4-diaminocyclohexane, polyetheramines, ethylene diamine, diethylene triamine, spermine, spermidine, polyamidoamine (PAMAM), guanidine carbonate, chitosan, tris-(2-aminoethyl)amine, 3-aminopropyltriethoxysilane, 1,4 Diaminobutane, 2,2Dimethyl-1,3-propanediamine, 1,3-diaminopentane, 1,2 Diaminopropane, triethylenetetramine, 1,3-diaminopropane;
- urea;
- ethylene urea;
- aminoguanidine bicarbonate;
- 1-(2-aminoethyl) imidazolidin-2-one;
- N-(3-aminopropyl)-N-dodecylpropane-1,3-diamine;
- N1-(2-Aminoethyl)-N1-dodecyl-1,2-ethanediamine;
- aminoethylethanolamine;
- N1-(3-aminopropyl) propane-1,3-diamine, polyethyleneimine, an amino-acid such as lysine, arginine, leucine, histidine, tryptophane, serin, glutamine, threonine, alanine, asparagine, aspartic acid, cysteine, glutamic acid, glycine, isoleucine, methionine, phenylalanine, proline, tyrosine, valine, and mixtures thereof.
8- The core-shell microcapsule according to anyone claims 5 to 7, wherein the acyl chloride is a compound of formula (I)
- wherein n is an integer varying between 1 and 8, preferably between 1 and 6, more preferably between 1 and 4, and
- wherein X is an (n+1)-valent C2 to C45 hydrocarbon group optionally comprising at least one group selected from (i) to (xi),
- wherein R is a hydrogen atom or an alkyl group such as a methyl or an ethyl group, preferably a hydrogen atom.
9- The microcapsule core-shell according to anyone of claims 5 to 8, wherein the polyamide-based shell is obtained from the reaction between an acyl chloride and at least one amino compound and wherein the at least one amino compound is L-Lysine.
10- A process for preparing a core-shell microcapsule slurry comprising the steps of:
- a) Preparing an oil phase comprising a hydrophobic material, preferably a perfume to form an oil phase;
- b) Dispersing the oil phase obtained in step a) into a dispersing phase to form a two-phases dispersion;
- c) Performing a curing step to form microcapsules in the form of a slurry;
- wherein a polyfunctional monomer is added in the oil phase and/or in the dispersing phase, and
- wherein a protein chosen in the group consisting of canola protein, sunflower seed protein, fungal protein, and mixtures thereof, is added in the oil phase and/or in the dispersing phase.
11- The process according to claim 10, wherein the polyfunctional monomer is chosen in the group consisting of at least one acyl chloride, a polyisocyanate, poly anhydride, polyepoxide, acrylate monomers, polyalkoxysilane, and mixtures thereof.
12- The process according to claim 10 or 11, wherein it comprises the steps of:
- a) Preparing an oil phase comprising an acyl chloride and a hydrophobic material, preferably a perfume to form an oil phase;
- b) Dispersing the oil phase obtained in step a) into a dispersing phase to form a two-phases dispersion;
- c) Performing a curing step to form microcapsules in the form of a slurry;
- wherein at least one amino-compound is added in the dispersing phase before the formation of the two-phases dispersion and/or in the two-phases dispersion obtained after step b), and
- wherein a protein chosen in the group consisting of canola protein, sunflower seed protein, fungal protein, and mixtures thereof is added in the oil phase and/or in the dispersing phase.
13- A perfuming composition comprising
- (i) Perfume microcapsule as defined in claims 1 to 9, wherein the hydrophobic active ingredient comprises a perfume,
- (ii) At least one ingredient selected from the group consisting of a perfumery carrier and a perfumery base
- (iii) Optionally at least one perfumery adjuvant.
14- A consumer product comprising:
- a personal care active base, and
- microcapsules as defined in claims 1 to 9 or the perfuming composition as defined in claim 13,
- wherein the consumer product is in the form of a personal care composition.
15- A consumer product comprising:
- a home care or a fabric care active base, and
- microcapsules as defined in claims 1 to 9 or the perfuming composition as defined in claim 13,
- wherein the consumer product is in the form of a home care or a fabric care composition.