IP Library › Granted Patent US 12,357,547
Granted Patent B2
US 12,357,547 · App. 18/150,292 · Granted Jul 15, 2025

Compositions containing microcapsules

Inventors: Takashi Sasaki (Union Beach, NJ); Johan G.L. Pluyter (Union Beach, NJ)
Assignee: International Flavors & Fragrances Inc.
A61K8/11A61K8/645A61K8/8152A61K8/84A61Q5/02A61Q13/00C11D3/3726C11D3/38C11D3/505C11D17/0039
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Quick Facts
Patent No.
US 12,357,547
App. No.
18/150,292
Granted
Jul 15, 2025
Kind
B2
Abstract

A microcapsule composition containing microcapsules coated with a deposition protein, e.g., a protein-silanol copolymer, a protein-silane copolymer, a protein-siloxane copolymer, or a cationically modified protein, is provided as is a method for making the microcapsule composition and using the microcapsule composition in consumer products, in particular rinse-off consumer product.

Claims (19)

1. A microcapsule composition comprising a plurality of microcapsules each containing a polymeric wall and an active material encapsulated within the polymeric wall; the polymeric wall contains a protein or a chitosan; and the polymeric wall is coated with a cross-linked protein-silicon copolymer.

2. The microcapsule composition of claim 1 , wherein the polymeric wall further contains 0.2% to 5%, based on the weight of the microcapsule composition, of an aromatic polyisocyanate having a phenyl, tolyl, xylyl, naphthyl, or diphenyl moiety as the aromatic component.

3. The microcapsule composition of claim 1 , further comprising a hydrocolloid.

4. A consumer product comprising a consumer product base and a microcapsule composition of claim 1 .

5. The consumer product of claim 4 , wherein the consumer product is a fabric conditioner, detergent, fabric spray, personal wash product, home care product, liquid soap, shampoo, rinse-off conditioner, or leave-on conditioner.

6. The microcapsule composition of claim 2 , wherein the aromatic polyisocyanate is a trimethylol propane-adduct of xylylene diisocyanate.

7. The microcapsule composition of claim 1 , wherein the protein-silicon copolymer comprises a protein-siloxane copolymer.

8. The microcapsule composition of claim 1 , wherein the protein-silicon copolymer has a molecular weight in the range of 1000 to 500,000.

9. The microcapsule composition of claim 1 , wherein the protein component of the protein-silicon copolymer comprises between 2% and 25% basic amino acids.

10. The microcapsule composition of claim 1 , wherein the protein component of the protein-silicon copolymer comprises a hydrolyzed protein.

11. The microcapsule composition of claim 1 , wherein the protein component of the protein-silicon copolymer comprises a wheat protein and/or a potato protein.

12. The microcapsule composition of claim 1 , wherein the cross-linked protein-silicon copolymer has siloxane cross-links.

13. A microcapsule composition comprising a plurality of microcapsules each containing a polymeric wall and an active material encapsulated within the polymeric wall; the polymeric wall contains a protein or a chitosan; and the polymeric wall is coated with a protein-acrylate copolymer having a nitrogen-containing acrylic moiety.

14. The microcapsule composition of claim 13 , wherein the nitrogen-containing acrylic moiety comprises a tertiary or quaternary amine group.

15. The microcapsule composition of claim 13 , wherein the protein component of the protein-acrylate copolymer comprises between 2% and 25% basic amino acids.

16. The microcapsule composition of claim 13 , wherein the protein component of the protein-acrylate copolymer comprises a hydrolyzed protein.

17. The microcapsule composition of claim 13 , wherein the protein component of the protein-acrylate copolymer comprises a wheat protein and/or a potato protein.

18. The microcapsule composition of claim 13 further comprising a sulfonated naphthalene-formaldehyde condensate.

19. A consumer product comprising a consumer product base and a microcapsule composition of claim 13 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 6, 2023
From: SASAKI, TAKASHI; PLUYTER, JOHAN G. L.
To: INTERNATIONAL FLAVORS & FRAGRANCES INC.
Reel/Frame 062297/0854 →
Continuity (6)
Continuation 17459348 · Aug 27, 2021
Continuation 16881820 · May 22, 2020
Continuation 15971241 · May 4, 2018
Continuation 15381145 · Dec 16, 2016
Provisional Application 62272743 · Dec 30, 2015
Related Publication 20230172820A1 · Jun 8, 2023
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