Invention Grant
- Patent Title: Encapsulation
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Application No.: US15334540Application Date: 2016-10-26
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Publication No.: US09937477B2Publication Date: 2018-04-10
- Inventor: Hanwei Zhang , Todd Arlin Schwantes , Katie Ann Hobart , Diane Jean Williamson
- Applicant: Encapsys, LLC
- Agent Benjamin Mieliulis
- Main IPC: A01N25/28
- IPC: A01N25/28 ; A61K9/50 ; A61K8/11 ; A61K8/81 ; A61K8/88 ; A61Q15/00 ; A61Q17/04 ; A61Q13/00 ; B01J13/18 ; B01J13/14 ; C09B67/02 ; C10M171/06 ; C11D3/50 ; F28D20/02

Abstract:
An improved process of making a benefit agent delivery particle and an improved microcapsule made by such process are disclosed. The process comprises the steps of providing a first composition of water phase 1, water phase 2 and water phase 3. Water phase 1 comprises water and an initiator; water phase 2 comprises water, a water-soluble or dispersible amine(meth)acrylate or hydroxyl(meth)acrylate and a multifunctional (meth)acrylate. Water phase 3 comprises water, and carboxyalkyl(meth)acrylate and a base or quarternary ammonium acrylate. The first two water phases are combined to prereact the hydroxy- or amine(meth)acrylate and the multifunctional (meth)acrylate to form a multifunctional hydroxyl-amine(meth)acrylate pre-polymer. The pre-polymer is combined with water phase 3; then an emulsion is formed by emulsifying under high shear agitation a second composition into said first composition; said second composition comprising an oil phase comprising an isocyanate and a benefit agent core material thereby forming a wall surrounding the benefit agent core material.
Public/Granted literature
- US20170113200A1 Encapsulation Public/Granted day:2017-04-27
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