Encapsulates

Patent metadata

Field	Value
Publication number	US-9890351-B2
Application number	US-201213569254-A
Country	US
Kind code	B2
Filing date	Aug 8, 2012
Priority date	Aug 10, 2011
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

The present application relates to encapsulates, compositions, products comprising such encapsulates, and processes for making and using such encapsulates. Such encapsulates comprise a core comprising a perfume and a shell that encapsulates said core, such encapsulates may optionally comprise a parametric balancing agent, such shell comprising one or more azobenzene moieties.

First claim

What is claimed is:

1. An encapsulate comprising a shell and a core, said core comprising a core material selected from the group consisting of a perfume, a silicone, a biocontrol agent, an antimicrobial, a flavor, a heating or cooling agent, a drug, a sun screen and mixtures thereof; said shell encapsulating said core and said shell comprising a cross-linked polymer having a main chain and an electromagnetic radiation sensitive moiety; wherein said electromagnetic radiation sensitive moiety is incorporated into the main chain of the polymer, and is sensitive to a species of electromagnetic radiation selected from the group consisting of infrared radiation, visible light, ultraviolet radiation and mixtures thereof; and wherein said electromagnetic radiation sensitive moiety is provided by a monomer selected from the group consisting of 4-[(E)-(4-chlorocarbonylphenyl)azo]benzoyl chloride, 4-[(E)-(4-aminophenyl)azo]aniline, [4-[(E)-[4-(aminomethyl)phenyl]azo]phenyl]methanamine, (E)-bis(4-vinylphenyl)diazene, [4-[(E)-[4-(hydroxymethyl)phenyl]azo]phenyl]methanol, 4-[(E)-(4-hydroxyphenyl)azo]phenol, 4-[(E)-[4-chlorocarbonyl-2-(diethylamino)phenyl]azo]-3-(diethylamino)benzoyl chloride, 4-[(E)-(4-chlorocarbonyl-2-pyrrolidin-1-yl-phenyl)azo]-3-pyrrolidin-1-yl-benzoyl chloride, 4-[(E)-(4-formylphenyl)azo]benzaldehyde, 4-[(E)-(4-chlorocarbonyl-2,6-dimethoxy-phenyl)azo]-3,5-dimethoxy-benzoyl chloride, 4-methacryloxy-azobenzene, 4,4′-di(methacrylamido)-azobenzene, 4,4′-dimethacryloxy-azobenzene, 4-hydroxymethyl-azobenzene, 4-methacrylxoxymethyl-azobenzene, 4,4′-dimethacryloxymethyl-azobenzene, 4,4′-bis(chlorocarbonyl)azobenzene, and mixtures thereof.

2. The encapsulate of claim 1 , wherein said cross-linked polymer is selected from the group consisting of polyamides, aminoplast polymers polyurethanes, polyureas, polycarbonates, polyacrylates, polyesters, and mixtures thereof.

3. A composition comprising one or more encapsulates according to claim 1 and an adjunct ingredient.

4. The composition of claim 3 , comprising, based on total composition weight from about 0.1% to about 25% of said encapsulate.

5. The encapsulate of claim 1 , wherein said shell of said encapsulate, upon exposure of said encapsulate to ultraviolet light for about four hours, permits release of said core material from said core, thereby increasing the amount of core material in a surrounding environment.

6. The encapsulate of claim 1 , wherein said electromagnetic radiation sensitive moiety is provided by a monomer selected from the group consisting of 4-[(E)-(4-chlorocarbonylphenyl)azo]benzoyl chloride, 4-[(E)-(4-aminophenyl)azo]aniline, (E)-bis(4-vinylphenyl)diazene, and mixtures thereof.

7. The encapsulate of claim 1 , wherein said cross-linked polymer is a polyamide.

8. The encapsulate of claim 1 , wherein said cross-linked polymer is a polyacrylate.

9. The encapsulate of claim 1 , wherein said cross-linked polymer is an aminoplast polymer.

Assignees

• Smets Johan
• Fernandez Prieto Susana
• Smith Steven Daryl
• Underiner Todd Laurence
• Wos John August
• Huhn Wolfgang Edgar
• Frederick Heath A
• Giamberini Marta
• Tylkowski Bartosz
• Procter & Gamble

Inventors

• Smets Johan
• Fernandez Prieto Susana
• Smith Steven Daryl
• Underiner Todd Laurence
• Wos John August
• Huhn Wolfgang Edgar
• Frederick Heath A
• Giamberini Marta
• Tylkowski Bartosz

Classifications

• A61K8/8152

  Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers · CPC title

• A61Q5/12

  Preparations containing hair conditioners · CPC title

• A61K2800/47

  Magnetic materials; Paramagnetic compounds · CPC title

• C11D17/0039 Primary

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

• A61K8/8129

  Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers or esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers, e.g. polyvinylmethylether · CPC title