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Methods of making capsules

A technology for capsules and precursors, applied in the field of preparing capsules, can solve problems such as low permeability

Pending Publication Date: 2022-02-01
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two properties are the desired outcome, but are also characteristic of dense and robust shells with low permeability, which are only possible through judicious selection of constituent materials and conditions to assemble them

Method used

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  • Methods of making capsules
  • Methods of making capsules
  • Methods of making capsules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0325] Example 1: Non-hydrolyzable precursor synthesis

[0326] Precursors for samples A-S, AV-AAD were prepared by:

[0327] Under a nitrogen atmosphere, a certain amount of TAOS reagent (purchased from Sigma Aldrich) was added to a clean dry round bottom flask equipped with a stirring bar and distillation equipment. A volume of acetic anhydride (available from Sigma Aldrich) and catalyst (available from Gelest, Sigma Aldrich) was added, and the contents of the flask were stirred and heated, as indicated in Table 1 . The reaction is heated to the indicated temperature for the indicated time, during which time the organic ester formed by the reaction of the alkoxysilane group with acetic anhydride and the condensation of the silyl acetate group with other alkoxysilane groups are distilled off Further organic esters are formed, this condensation occurs when polyalkoxysilanes (PAOS) ​​are formed. The reaction flask was cooled to room temperature and placed on a rotary evapor...

Embodiment 2

[0329] Example 2: Synthesis of Hydrolyzed Precursors

[0330] Precursors for samples U-Z, AA-AI, and AK-AAB were prepared by:

[0331] Under a nitrogen atmosphere, an amount of TAOS reagent (available from Sigma Aldrich) was added to a clean dry round bottom flask equipped with a stirring bar and distillation equipment, and an amount of alcohol (available from Sigma Aldrich) was added thereto. As shown in Table 2, a certain amount of catalyst dissolved in water was added. 1N and 0.1N HCl dissolved in water were purchased from SigmaAldrich. 0.002N HCl was prepared by diluting 0.1N HCl in distilled water (purchased from Sigma Aldrich). The reaction was stirred and heated to the indicated temperature for the indicated time, during which time the alcohol formed by the hydrolysis of the alkoxysilane groups and the alcohol solvent and some water formed by the condensation of the silanol groups distilled off to form the polyalkane Occurs when oxysilane (PAOS) ​​is used. The rea...

Embodiment 3

[0339] Embodiment 3: oil-in-water capsules

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Abstract

A method of making a population of capsules, the capsules can include a core including a benefit agent and a shell surrounding the core, and the shell can include a first shell component.

Description

technical field [0001] The present disclosure relates to capsules for the transfer and triggered release of benefit agents and methods of making the capsules. Background technique [0002] Microencapsulation is a process in which liquid droplets, solid particles or gases are enclosed within a solid shell, usually in the micro-sized range. The nuclear material is then mechanically separated from the surrounding environment (Jyothi et al., Journal of Microencapsulation, 2010, 27, 187-197). Microencapsulation technology is receiving attention in various scientific fields and has a wide range of commercial applications in different industries. In general, capsules are capable of one or more of: (i) providing formulation or material stability by mechanically separating incompatible components, (ii) protecting the core material from the surrounding environment, ( iii) masking or concealing undesired properties of the active ingredient, and (iv) controlling or triggering the rele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/18A01N25/28A23P10/30A61K8/11A61K9/50B01J13/20B01J13/22B32B15/02C09B67/02C11D3/50D06M23/12F28D20/02
CPCB01J13/185B01J13/22B01J13/206A61K8/11A01N25/28D06M23/12D06M2400/02D06M13/507D06M13/513C11D17/0039A61Q19/00A61K2800/10A61K8/06A61K8/25A61K8/29A61K8/26A01N2300/00A61K2800/56B01J13/10B82Y30/00B82Y40/00
Inventor 玛丽安娜·B·T·卡多索安德烈·马丁·巴罗斯彼得·德尼斯皮埃尔·丹尼尔·维斯特雷特瓦莱丽·王史蒂文·达里尔·史密斯张志兵乔恩·A·普里斯
Owner THE PROCTER & GAMBLE COMPANY