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New formulation capabilities with three new silicone resin flake products

IP.com Disclosure Number: IPCOM000177038D
Publication Date: 2008-Dec-04

Publishing Venue

The IP.com Prior Art Database

Related People

Zhikai Kevin Fang: AUTHOR [+4]

Related Documents

172196D: IP.COM

Abstract

The purpose of this work was to evaluate the properties of three new silicone resin flake materials, a pure silicone MQ resin and 2 blends of MQ/T propyl silicone resins, a high and lower ratio of MQ: T propyl. The composition of these new blends and their use in Personal Care have been described in patent WO 2005075567 but additional findings, especially due to the flake form will be further described, especially the impact of the presence of the T propyl resin on the properties and performance of the MQ resin. The compatibility of these three resin flake materials was evaluated using viscosity/ resin concentration curves as the measurement. Comparison among the curves was used as an indication of the solvent impact on the resin solubility as well as an indication of the pourability limit. The resins are compatible with a broad range of organic solvents. In the tested solvents, the results showed that higher portions of T propyl enhance the compatibility with silicone and organic solvents. Sensory evaluation comparing the 3 resin flake materials was conducted showing significant differences, especially between the pure MQ resin and the higher propyl content resin blend when delivered from a volatile carrier; the film formed by the resin is softer with higher T (Pr) content, and less powdery feel. All 3 resins had a very good and similar wash off resistance. Curl retention testing was also conducted showing that in that case, the T propyl resin decreased the curl retention ability of the resin. These 3 materials were compared in color cosmetic formulations such as lipsticks, foundation and mascara where differences in performance could also be demonstrated. Additional formulations such as sun care and insect repellent were also formulated. In the case of the insect repellent containing formulation, the MQ resin flake material was found to have a positive impact on long-lasting release of the insect repellent active.

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New formulation capabilities with three new silicone resin flake products

Authors: Zhikai Kevin Fang                   Dow

Corning

(

Shanghai

) Co., Ltd

               Isabelle Van Reeth                 Dow

Corning

(

Shanghai

) Co., Ltd

               Veronique Kowandy             Dow

Corning

Europe

S.A

                Tina Leaym              Dow Corning Corporation,

Midland

(

USA

)     

Abstract

The purpose of this work was to evaluate the properties of three new silicone resin flake materials, a pure silicone MQ resin and 2 blends of MQ/ T propyl silicone resins, a high and lower ratio of MQ: T propyl. The composition of these new blends and their use in Personal Care have been described in patent WO 2005075567 but additional findings, especially due to the flake form will be further described, especially the impact of the presence of the T propyl resin on the properties and performance of the MQ resin. The compatibility of these three resin flake materials was evaluated using viscosity/ resin concentration curves as the measurement.   Comparison among the curves was used as an indication of the solvent impact on the resin solubility as well as an indication of the pourability limit. The resins are compatible with a broad range of organic solvents. In the tested solvents, the results showed that higher portions of T propyl enhance the compatibility with silicone and organic solvents. Sensory evaluation comparing the 3 resin flake materials was conducted showing significant differences, especially between the pure MQ resin and the higher propyl content resin blend when delivered from a volatile carrier; the film formed by the resin is softer with higher T (Pr) content, and less powdery feel. All 3 resins had a very good and similar wash off resistance. 

Curl retention testing was also conducted showing that in that case, the T propyl resin decreased the curl retention ability of the resin.

These 3 materials were compared in color cosmetic formulations such as lipsticks, foundation and mascara where differences in performance could also be demonstrated.

Additional formulations such as sun care and insect repellent were also formulated. In the case of the insect repellent containing formulation, the MQ resin flake material was found to have a positive impact on long-lasting release of the insect repellent active.

 

Introduction

MQ Silicone Resins have some unique features, such as durability, wash-off resistance, film forming ability, and non transfer properties. Areas of use for MQ silicone resins include a wide range of personal care applications such as skin care, color cosmetics, sun care and hair care.

The purpose of this work was to evaluate the properties of three new silicone resin flake materials, a pure...