Granted Patent B2

US 12,539,261 · App. 18/842,208 · Granted Feb 3, 2026

Inventors: Fatimata Dembele-Kuntzmann (Argenteuil, FR); Marion Coureault (Argenteuil, FR)

Assignee: GIVAUDAN SA

A61K8/11A61K8/585A61K8/87A61Q19/00A61K2800/10

Abstract

Claims (42)

1 . An encapsulated composition comprising at least one core-shell microcapsule, wherein the at least one core-shell microcapsule comprises a core comprising at least one benefit agent and a shell surrounding the core, wherein the shell comprises:

a) a polymeric stabilizer that is formed by combination of a bio-based polymeric surfactant with at least one aminosilane resulting in an assembly which comprises moieties derived from the polymeric surfactant and moieties derived from the at least one aminosilane;

b) a bio-based and biodegradable hydrocollolid; and

c) a linker derived from a bio-based and biodegradable epoxy resin;

wherein the bio-based polymeric surfactant comprises a polysaccharide comprising carboxylic acid groups, wherein the carboxylic acid groups comprise uronic acid units;

wherein the bio-based and biodegradable hydrocolloids are plant and seaweed-derived hydrocolloids or gelatin;

wherein the bio-based and biodegradable epoxy resin is selected from the group consisting of epoxidised plant oils, epoxidised alcohols, epoxidised furans, epoxidised phenols and combinations thereof; and

wherein the linker derived from an epoxy resin interacts by covalent or physical bonding with the bio-based and biodegradable hydrocolloid and/or with the bio-based polymeric surfactant.

2 . The encapsulated composition according to claim 1 , wherein the benefit agent is selected from the group consisting of pectin.

3 . The encapsulated composition according to claim 1 , wherein the bio-based polymeric surfactant is a high methoxylated pectin or gum acacia Senegal.

4 . The encapsulated composition according to claim 1 , wherein the at least one aminosilane is a bipodal aminosilane.

5 . The encapsulated composition according to claim 1 , wherein the polymeric stabilizer further comprises a polyfunctional isocyanate.

6 . The encapsulated composition according to claim 1 , wherein the bio-based and biodegradable hydrocolloid is selected from the group consisting of polysaccharides; and combinations thereof, optionally wherein the bio-based and biodegradable hydrocolloid is a pectin, a modified starch, a gelatin or a combination thereof.

7 . The encapsulated composition according to claim 1 , wherein the bio-based and biodegradable epoxy resin is an epoxidised plant oil.

8 . The encapsulated composition according to claim 1 , wherein the shell is further stabilized with a stabilizing agent, optionally wherein the stabilizing agent comprises at least two carboxylic acid groups.

9 . The encapsulated composition according to claim 1 , wherein the shell further comprises a second linker derived from a compound selected from the group consisting of an anhydride an acid, and a combination thereof.

10 . The encapsulated composition according to claim 6 , wherein the polysaccharide is a pectin, modified starches, guar gum, locust bean gum, konjac mannan, gum arabic, gum ghatti, tragacanth, agar, alginates, carrageenan or a combination thereof.

11 . The encapsulated composition according to claim 6 , wherein the protein is gelatin.

12 . A method for preparing an encapsulated composition according to claim 1 , the method comprising the steps of:

a) Providing an oil phase comprising at least one benefit agent, at least one aminosilane, optionally a polyfunctional isocyanate, and a bio-based and biodegradable epoxy resin;

b) Providing an aqueous phase;

c) Emulsifying the oil phase of step a) and the aqueous phase of step b) to form an emulsion of oil droplets in the aqueous phase;

d) Dissolving or dispersing a bio-based polymeric surfactant and, optionally, a second linker in the emulsion formed in step c);

e) Dissolving or dispersing a bio-based and biodegradable hydrocollolid in the emulsion formed in step d);

and, optionally, wherein a step of adding a stabilizing agent is carried out between step d) and step e) and/or after step e);

f) Causing the at least one aminosilane, the bio-based polymeric surfactant, the bio-based and biodegradable hydrocollolid and the bio-based and biodegradable epoxy resin to form a shell at the oil-water interface of the emulsified oil droplets, thereby forming a slurry of microcapsules.

13 . A method for preparing an encapsulated composition according to claim 1 , the method comprising the steps of:

a) Providing an oil phase comprising at least one benefit agent, at least one aminosilane and, optionally a polyfunctional isocyanate;

b) Providing an aqueous phase;

c) Emulsifying the oil phase of step a) and the aqueous phase of step b) to form an emulsion of oil droplets in the aqueous phase;

d) Dissolving or dispersing a bio-based polymeric surfactant and, optionally, a stabilizing agent, in the emulsion formed in step c);

e) Providing a bio-based and biodegradable hydrocollolid;

f) Providing a bio-based and biodegradable epoxy resin, optionally dispersed in a vegetable fatty acid;

g) Dissolving or dispersing the bio-based and biodegradable hydrocollolid provided in step e) and the bio-based and biodegradable epoxy resin provided in step f) in the emulsion formed in step d), wherein

(i) the dissolving or dispersing of the bio-based and biodegradable hydrocollolid provided in step e) is carried out before or after the dissolving or dispersing of the bio-based and biodegradable epoxy resin provided in step f); or

(ii) the bio-based and biodegradable hydrocolloid provided in step e) and the bio-based and biodegradable epoxy resin provided in step f) are mixed together before dissolving or dispersing in the emulsion formed in step d);

h) optionally, adding a stabilizing agent to the emulsion formed in step g); and

i) Causing the at least one aminosilane, the bio-based polymeric surfactant, the bio-based and biodegradable hydrocollolid and the bio-based and biodegradable epoxy resin to form a shell at the oil-water interface of the emulsified oil droplets, thereby forming a slurry of microcapsules.

14 . The method according to claim 13 , further comprising dissolving or dispersing a bio-based and biodegradable epoxy resin in the oil phase of step a).

15 . A consumer product comprising an encapsulated composition according to claim 1 .

16 . A consumer product according to claim 15 , wherein the consumer product is selected from the group consisting of personal care product, fabric care product, home care product or a pet care product.

17 . A method of improving the perception or enhancing the performance of a benefit agent in a consumer product, the method comprises adding the encapsulated composition of claim 1 to the consumer product.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (11)