In our commitment to provide advanced technology to the science of beauty, we are proud to introduce our antimicrobial powder for cosmetic preservation. DuPont antimicrobial powder utilizes a unique core-shell structure, in which a core particle is coated with a proprietary anti-microbial coating to prevent the growth of micro organisms. The powder is effective in Personal Care Products where antimicrobial activity and ease of formulation are desired. It provides a low order of toxicity with ease of dispersion and excellent thermal stability.
The core particle, made of zinc oxide not only serves to efficiently increase the surface area of the active coating ingredient so that the overall loading of the material is reduced, but itself acts as an antifungal. The lower loading reduces the cost as well as the impact on color and opacity.
The protective coating serves to control the rate of release of the active ingredients providing the proper level of antimicrobial activity and long-term effectiveness. A proprietary dispersion aid is also provided to facilitate dispersion of the powder in organic and aqueous systems.
Activity
DuPont's antimicrobial powder has an active coating of metallic silver which has been shown effective against the following:
· Bacteria (gram positive and gram negative)
· Fungi
Physical properties of ZelecŪ AM Antimicrobial Powder
|
Color and Form Tap Density (glee) Specific Gravity (glee) Surface Area (m2/g) Oil Absorption (g oil/100 g) Particle Size, D50 (microns) |
: Light powder, L*=79, a*=2.1, b*=7.4, L*a*b*=78 : 1.6-1.9 : 5.5 - 5.6 : 5 - 8 : 15 - 20 : 0.75 - 1.00 |
Effective loading levels will vary by application and type of system. Typical loading levels are 0.05 - 0.5 weight percent.
SAFETY :
Avoid breathing dust
See the Material Safety Data Sheet (MSDS) for product-specific information.
Technical Assistance
For help in obtaining or evaluating samples, please call DuPont's Technical Service experts at (609) 540-3217
| The information set forth herein is furnished free of charge and is based on technical data that DuPont believes to be reliable. It is intended for use by persons having technical skills and at their own discretion and risk. Since conditions of use are outside our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. Nothing herein is to be taken as a license to operate under or a recommendation to infringe any patents. |
