Antibacterial and fungicidal Solid Powder ( W2) additive

Anti allergic, non toxic antibacterial and fungicidal additive for film-forming substrates like paints, sol/gel coatings, varnish, resins, polymers and other
dispersions as well as for the production of monomeric resin solutions.

DESCRIPTION
agpure® W2 is a concentrated, solid silver nanoparticle powder for the antimicrobial functionalization of surfaces and bulk materials. Due to the high surface to volume ratio of nanoparticles only low levels of metallic silver are necessary for a high and long lasting antimicrobial performance. The
biocidal effect of agpure® W2 is based on the controlled release of silver ions.

agpure® W2 is highly recommended for solvent based, polar paint/varnish-formulations and for the antimicrobial functionalization of organic resins. This additive is characterized by reduced color effects compared to the use of W10 or W50 types. For other product forms special agpure® types are available. Please ask our experts.

TYPICAL APPLICATION AREAS
Antibacterial resins, varnishes, coatings and materials in hygienic applications in medicine, agriculture, food-processing, –transport and – handling, water treatment, air ducts, public areas, the textile industry and in the sanitary sector. Non sensitizing, permanent active fungicidal paints,
varnish, coatings.

FEATURES / BENEFITS
Products properly equipped with antimicrobial agpure® W2 are non-toxic to humans and animals.

In contrast to other biocides agpure® W2 is non sensitizing and non allergic to humans in skin contact. Due to the slow and controlled release of biocidal
silver-ions from agpure® W2 the antimicrobial effect is persistent. Products containing agpure® W2 can be protected against microbial soiling for a lifetime without being toxic to humans or the environment. agpure® W2 exhibits strong activity against all gram-positive and gram-negative bacteria. Its
activity is unaffected by antibiotic-resistance of strains, yeast and fungi. So agpure® W2 is a valuable mean fighting multi resistant germs in
hospitals, surgeries, agriculture and in food processing. agpure® W2 itself does not induce or propagate bacterial resistance.
agpure® W2 consisting of silver nanoparticles and titanium dioxide exhibit a slightly gray colour. Please consider possible influences on product colour.

PRODUCT FORMS

Article no.: APW002

Appearance: gray powder

Available Pack sizes:  20, 50, 100 kg

SPECIFICATIONS

Silver concentration 2,0 ± 0,1 % wt,

TYPICAL PROPERTIES

• Gray nanoparticle powder
• Bulk density 0,8 g/cm3
• Colour gray
• Mean silver particle size <100 nm
• Stability (dark, cool storage, dry) > 12 months

USE RECOMMENDATIONS Suspensibility agpure® W2 is designed for the suspension of agpure® in polar organic substrates. agpure® W2 nanoparticles tend to settle from dispersions with low viscosity with time. Settled particles easily can be redispersed by gentle shaking or stirring. In case of addition of other solvents, salts or solids, agglomeration might occur. Preliminary tests are recommended to assess compatibilities with other components.

Suspending agpure® W2
Please keep to the following instructions to handle agpure® W2 properly:

• Avoid dust formation.
• Mix vigorously; the use of dispersing instruments (e.g. ULTRA-TURRAX®) is recommended if the dispersion is not satisfying.
  Recommended dosage and antimicrobial testing Depending on the concentration of agpure® W2 in the product, the wettability of the surface, potentially
  interfering additives and the selection of the test method for antimicrobial activity you can achieve a microbial reduction of 90% up to 99,999% (reduction value: 1 – 5 log steps). Due to this variety of influencing parameters we cannot recommend one concentration for all applications.
  Typical concentrations range from 50 mg/kg to 1000 mg/kg silver in the surface layer of the product. When calculating the appropriate agpure® W2
  dosage for your product, you have to take into account that agpure® W2 contains 2.0 %wt. agpure® nanosilver.

agpure® is a long-term shield against microbial growth. It is not a sterilizing agent and does not have long range effects. International research
institutes typically use the listed test methods to determine the antimicrobial action of agpure® products:
Rigid surfaces:
JIS Z 2801:2000 or ISO 22196:2007
Textiles:
JIS L 1902:2002 or DIN EN ISO 20743:2007
We have a huge experience in developing and testing agpure® formulations – please ask our experts for application specific dosage recommendations and for the application appropriate test method.

PRODUCT DISCLAIMER:

The product image(s) shown is a reference for the actual product. While every effort has been made to maintain complete accuracy and up to date product information, it is important to go through details such as product labels, manufacturing details, batch, warnings, and directions before using a packaged product. For additional information,  please refer to the contact details mentioned on the label. Users are recommended to test the product before usage and the suppliers warrantee is only for the cost of product not for any incidental losses  or third party losses.

Pack Sizes Available :  5 kg ( Research Purposes )

( Ask for more bulk pack sizes and Industrial quantities )

PRODUCT DISCLAIMER:

The product image(s) shown is a reference for the actual product. While every effort has been made to maintain complete accuracy and up to date product information, it is important to go through details such as product labels, manufacturing details, batch, warnings, and directions before using a packaged product. For additional information,  please refer to the contact details mentioned on the label. Users are recommended to test the product before usage and the suppliers warrantee is only for the cost of product not for any incidental losses  or third party losses.