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Formulation Possibilities with new Silicone Pituitous Fluid

IP.com Disclosure Number: IPCOM000242222D
Publication Date: 2015-Jun-26
Document File: 17 page(s) / 58K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure relates to personal care compositions containing pituitous silicone fluids with the INCI name, “Dimethicone/Vinyl Dimethicone Crosspolymer”. These silicone fluid compositions contain certain branched and/or high molecular weight organopolysiloxanes that demonstrate pituitous rheological behavior. The most recognizable behavior being their string-like appearance which is the formation of thin strands or threads when a small amount of the pituitous fluid is separated from the bulk of the fluid. Another rheological characteristic exhibited by pituitous fluids is that they develop a normal force when subjected to shear stress. Pituitous fluids are able to be added to many common personal care applications, including, but not limited to, hair conditioners, color cosmetics, sunscreens, bodywash, etc.

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Formulation Possibilities with new Silicone Pituitous Fluid  

Authors :        Jason Vogel and Isabelle Van Reeth  (Dow Corning Corporation)

Abstract

This disclosure relates to personal care compositions containing pituitous silicone fluids with the INCI name, “Dimethicone/Vinyl Dimethicone Crosspolymer”. These silicone fluid compositions contain certain branched and/or high molecular weight organopolysiloxanes that demonstrate pituitous rheological behavior. The most recognizable behavior being their string-like appearance which is the formation of thin strands or threads when a small amount of the pituitous fluid is separated from the bulk of the fluid. Another rheological characteristic exhibited by pituitous fluids is that they develop a normal force when subjected to shear stress. Pituitous fluids are able to be added to many common personal care applications, including, but not limited to, hair conditioners, color cosmetics, sunscreens, bodywash, etc. 

Introduction

This disclosure relates to personal care compositions containing pituitous silicone fluids with the INCI name, “Dimethicone/Vinyl Dimethicone Crosspolymer”. These silicone fluid compositions contain certain branched and/or high molecular weight organopolysiloxanes that demonstrate pituitous rheological behavior. Variations of these fluids can consist of attaching different functional groups which can include polyether, amino, amido, alkyl, siloxane, polyol, phenyl, epoxy, etc. These fluids can also be delivered in an emulsion form for potentially greater ease in use.When formulated into personal care compositions, these silicone fluids provide enhanced sensory, unique rheology, increased lubricity, and film-forming properties based on their pituitous rheological properties.

Pituitous fluids are fluids that display particular types of rheological behavior. The most easily recognized rheological behavior for the pituitous fluids is their “stringing” behavior which is the formation of thin strings or threads when a small amount of the pituitous fluid is separated from the bulk of the fluid. Another rheological characteristic exhibited by pituitous fluids is that they develop a normal force when subjected to shear stress. When a pituitous fluid is subjected to a shear stress in the x-y plane, a force is developed in the z direction (perpendicular, or “normal” of the plane of shear). This behavior is related to a phenomenon known as the Weissenburg effect whereby polymers in solution that are stirred due to entanglements between polymer chains that develop under shear stress. Using a controlled stress rheometer, the normal force may be measured.

Formulation possibilities:

1.      Antiperspirant gels/soft solids

Phase A

Wt.%

Cyclopentasiloxane (and) PEG-12 Dimethicone Crosspolymer

10.0 %

Cyclopentasiloxane

10.0 %

Dimethicone (and) Dimethicone Crosspolymer

10.0 %

Pituitous Fluid

5.0%

Phase B

Aluminum Zirconium Tetrachlorohydrex GLY

25.0 %

propylene glycol

5 %

Wat...