Encapsulation

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United States of America Patent

PATENT NO 9937477
SERIAL NO

15334540

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
WATERTITE PRODUCTS INC455 W VICTORIA STREET COMPTON CA 90220
IPS CORPORATION455 W VICTORIA STREET COMPTON CA 90220
ENCAPSYS LLC920 MILLIKEN ROAD M-495 SPARTANBURG SC 29303
IPS ADHESIVES LLC455 W VICTORIA STREET COMPTON CA 90220
IPS STRUCTURAL ADHESIVES INC455 W VICTORIA STREET COMPTON CA 90220
WELD-ON ADHESIVES INC455 W VICTORIA STREET COMPTON CA 90220

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hobart, Katie Ann Neenah, US 2 24
Schwantes, Todd Arlin Lena, US 49 1160
Williamson, Diane Jean Kaukauna, US 3 24
Zhang, Hanwei Appleton, US 16 37

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