Encapsulates

A mixture and polymer technology, applied in detergent composition, chemical/physical process, organic cleaning composition, etc., can solve the problem of not providing effective encapsulation of solid water-soluble beneficial agent

Inactive Publication Date: 2012-12-05
PROCTER & GAMBLE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While such processes provide certain benefits, new protective processes that allow triggered release of beneficial agents are needed
While melamine formaldehyde encapsulation techniques exist, applicants have recognized that such techniques do not provide effective encapsulation of solid water-soluble benefit agents because such solid water-soluble benefit agents dissolve during the emulsification step of the encapsulation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0392] a. Preparation of calibration curve: Add 40 μL of 10.000 ppm detergent in deionized water as described in Examples 7, 8 and 9 to 150 μL of Chicago Sky Blue reagent, and at 37° C. Incubate for 3 minutes (see table below). After incubation, absorbance measurements (Abs 1 ) of the detergent and dye solutions were performed at 600 nm. 60 μL of hydrogen peroxide reagent was added to the solution and incubated at 37° C. for 30 minutes. After incubation, the absorbance (Abs 2) of the solution was measured at 600 nm. Repeat the protocol with different levels of metal catalyst according to the table below:

[0393] sample

Xppm metal catalyst

Abs 1

Abs 2

ABS=Abs 1-Abs 2

0

0

1

0.05

2

0.10

3

0.20

4

0.30

5

0.40

6

0.50

7

...

Embodiment 1

[0414] Example 1: Preparation of encapsulates by interfacial polymerization

[0415] Core preparation: 40 g of the suspension composed of a solid water-soluble manganese complex such as meso-5,5,7,12 was cooled to 25°C and mixed with 4.482 g of trimesoyl chloride (Sigma Aldrich). , 12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane and rac-5,5,7,12,12,14-hexamethyl-1,4,8 , a manganese complex of 11-tetraazacyclotetradecane ligand (99% of the particles have a particle size of 3.65 microns), polysiloxane (60,000 centistokes) and a hydrophobic Sexual organic composition formation. The mixture was kept at 25°C.

[0416] Solution 1 was prepared: 2 grams of polyvinyl alcohol (87-89% hydrolyzed, Mw 13000, Sigma-Aldrich) were dissolved and mixed in 198 grams of deionized water. The solution was cooled to 25°C.

[0417] Solution 2 was prepared: 8.598 grams of diethylenetriamine (Sigma-Aldrich) was mixed with 10 grams of deionized water. The solution was cooled to 25°C.

[0418]...

Embodiment 2

[0420] Example 2: Preparation of encapsulates by thermally induced phase separation

[0421] Preparation of cores: 70 g of a suspension consisting of a solid water-soluble manganese complex such as meso-5,5, 7,12,12,14-Hexamethyl-1,4,8,11-Tetraazacyclotetradecane and rac-5,5,7,12,12,14-Hexamethyl-1, Manganese complex of 4,8,11-tetraazacyclotetradecane ligand (99% of the particles have a particle size of 3.65 microns), polysiloxane (60,000 centistokes) and materials listed in Tables 1 to 10 A formulated hydrophobic organic composition is formed. The mixture was kept at 5°C.

[0422] Prepare Solution 1: Dissolve 1.8 g of polyvinyl alcohol at 60 °C 70-75 (DuPont) was dissolved in 148.2 grams of deionized water. The solution was cooled to 5°C.

[0423] Solution 2 was prepared: 1.87 grams of hydroxypropylmethylcellulose (Sigma-Aldrich) was dissolved in 60 grams of deionized water. The solution was kept at 5°C until the hydroxypropylmethylcellulose was completely dissolved....

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Abstract

The present application relates to encapsulated, solid, water soluble benefit agents and products comprising such encapsulates, as well as processes for making and using such encapsulates and products comprising such encapsulates. The encapsulation processes disclosed, offer solutions to emulsification problems and minimize negative interactions between the benefit agent and shell materials that occur during particle making and processing, by employing a protective suspension agent.

Description

field of invention [0001] This patent application relates to encapsulated solid water-soluble benefit agents and products comprising such encapsulates, and methods of making and using such encapsulates and products comprising such encapsulates. Background of the invention [0002] Products (e.g., consumer products) may contain one or more solid water-soluble benefit agents that provide a desired benefit (e.g., stain removal and / or bleach). Unfortunately, such benefit agents are degraded by or degrade components of the product prior to use of such products. Therefore, there is a need for protection systems that protect product components. Protection systems include coating processes such as starch encapsulation and agglomeration. While such processes provide certain benefits, new protective processes that allow triggered release of benefit agents are needed. While melamine formaldehyde encapsulation techniques exist, applicants have recognized that such techniques do not ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A61K8/11B01J2/00B01J13/06C11D3/37C11D3/39C11D17/00
CPCC11D3/38672C11D17/0039B01J13/02C11D3/3935
InventorJ.斯梅茨S.费尔南德斯普里埃托R.S.博布诺克S.J.吉内布雷捷耶P.M.K.珀尼尔J-S.乌伊特斯普罗特
OwnerPROCTER & GAMBLE CO