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US 9,937,477 B2Granted
Encapsulation
OwnerHanwei Zhang, Todd Arlin Schwantes +2inventors
InventorsHanwei Zhang, Todd Arlin Schwantes, Katie Ann Hobart, Diane Jean Williamson
Life of this patent
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OwnerHanwei Zhang, Todd Arlin Schwantes +2inventors
InventorsHanwei Zhang, Todd Arlin Schwantes, Katie Ann Hobart, Diane Jean Williamson
Estimating the term…
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.
A microcapsule having a shell containing surface charge functional groups, the microcapsule made by a process comprising:
A microcapsule having a shell with surface charge functional groups, the microcapsule comprising an oil soluble or dispersible benefit agent core material and a shell surrounding the benefit agent core material, the shell comprising a polyurea formed from a first component of an isocyanate and a second component of an amine, the amine comprising the reaction product of an alkylaminoalkyl(meth)acrylate and a multifunctional (meth)acrylate, together with a carboxyalkyl(meth)acrylate or quarternary ammonium acrylate.
A microcapsule having a shell with surface charge functional groups, the microcapsule comprising an oil soluble or dispersible benefit agent core material and a shell surrounding the benefit agent core material, the shell comprising a reaction product of an isocyanate;
A microcapsule having a shell with surface charge functional groups, the microcapsule comprising an oil soluble or dispersible benefit agent core material and a shell surrounding the benefit agent core material, the shell comprising a polyurethane formed from a first component of an isocyanate and a second component of a polyol, the polyol comprising the reaction product of a hydroxy(meth)acrylate and a multifunctional (meth)acrylate, together with a carboxyalkyl(meth)acrylate or quarternary ammonium acrylate.
A microcapsule having a shell with surface charge functional groups, the microcapsule comprising an oil soluble or dispersible benefit agent core material and a shell surrounding the benefit agent core material, the shell comprising a reaction product of an isocyanate;
A process of making a benefit agent delivery particle, said process comprising providing a first composition of water phase 1, water phase 2 and water phase 3:
A process of making a benefit agent delivery particle, said process comprising providing a first composition of water phase 1, water phase 2 and water phase 3:
Dependencies are inferred from the claim text.