Conopco, Inc.

Unilever Plc

Unilever, N.v.

Stuart Anthony Barnett

Christopher Clarkson Jones

Craig Warren Jones

Andrew Philip Parker

Xiaoyun Pan

Adam John Limer

Jinfang Wang

James Merrington

Jeremy Nicholas Winter

Robert Allan Hunter

The invention provides a benefit agent delivery particle having an average diameter of less than 50 micron comprising; at least one shell formed by a step-growth polymerization reaction, preferably involving an isocyanate monomer, more preferably a urethane and/or a urea. interior said shell, at least one region formed by chain-growth polymerization reaction (preferably a free-radical polymerization) which does not involve an isocyanate, c) optionally, a benefit agent interior to said shell, and/or a deposition aid exterior to said shell. The invention further provides a process for the preparation of such particles wherein the shell is formed prior to the chain-growth polymerization of the at least one region interior of the shell, preferably be forming the shell at a temperature at which the chain-growth reaction is inhibited. The invention further provides fully formulated products, preferably liquids and gels, which contain said benefit agent delivery particles and a method of treating substrates using said products.

Benefit delivery particle, process for preparing said particle, compositions comprising said particles and a method for treating substrates

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Bebington, United Kingdom

Stuart Anthony Barnett