Unilever Home and Personal Care Usa, Division of Conopco, Inc.

Chesebrough-pond's USA Co., Division of Conopco, Inc.

Peter Anthony Divone

Walter Anthony Biercevicz

Michael C Cheney

Brian John Dobkowski

Christy Ann Bridges

Joseph James Regan

Salvador Pliego

Kenneth Paul Manzari

Kimberly Ann Priest

Matthew Jungblut

A process which may be continuous is provided for manufacture of personal care product compositions. The process involves feeding a first water phase which is a concentrate containing most if not all water soluble ingredients of the composition into a blending tube. A second phase which can be oily or aqueous and a third water phase, the latter being essentially pure water, are also fed into the blending tube. All of the phases are transported through the tube at a flow rate of about 5 to about 5,000 lbs./minute and at a pressure of about 10 to about 5,000 psi. Preferably the tube leads into a homogenizer such as a sonolator.

Process for manufacture of personal care products utilizing a concentrate water phase

A process is provided for preparing a silicone elastomer composition for cosmetic products which includes the steps of feeding the silicone elastomer composition comprising a silicone rubber in a carrier fluid into a reactor, mixing the composition in the reactor, delivering the composition from the reactor into a high pressure pump, pumping the fluid into a device for reducing particles of rubber into smaller sizes and recirculating the resultant size reduced particles back to the reactor. The device for reducing particle size is preferably a high pressure fed homogenizer, most advantageously a sonolator.

Process for preparing silicone elastomer compositions

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Peter Anthony Divone