Momentive Performance Materials Introduces Next Generation Silwet* Adjuvants for Agricultural Applications

    Superior Stability, Performance, Efficiency for In-Can Pesticide and

    WILTON, CONN., August 6 /CNW/ - Momentive Performance Materials today
introduced Silwet(*) HS-312 spreader and Silwet HS-429 penetrant. These new
agricultural adjuvants offer increased hydrolytic stability to pesticide
formulators, providing the opportunity to incorporate the performance and
efficacy advantages of silicone spreaders and penetrants into "in-can"
products. In the past, conventional silicone adjuvants could not be used
successfully due to limitations on shelf-life.

    "These additions to the Silwet line build on our heritage of innovation
in agricultural applications by significantly extending the stability range of
silicone adjuvants," said S. Ari Papoulias, global marketing, Momentive. "By
incorporating these innovative adjuvants "in-can", pesticide formulators may
now offer their customers all the advantages of silicone superspreaders and
penetrants. And, the "in-can" alternative is often a better and more efficient
method of delivery compared to the addition of the individual components

    With superior spreading performance at lower concentrations relative to
other commercial surfactants, and with extended stability in water-based
formulations that range from pH 3 to pH 12, Silwet HS-312 spreader offers
in-can pesticides the potential for lower spray application rates and enhanced
efficacy. Silwet HS-312 spreader is also compatible with a number of
agrochemical components, and can be dispersed into water-based agricultural
formulations, yielding products with excellent shelf life.

    Silwet HS-429 penetrant is an excellent choice for formulators to
consider for significant enhancement of the efficacy of their glyphosate and
other water-soluble herbicide products. Optimized to provide excellent
penetration, as well as extended stability in the 4-9 pH range, it is a
cost-effective adjuvant that can replace Tallow Amine Ethoxylates (TAE) and
other common commercial surfactants. Also, Silwet HS-429 penetrant may be used
at rates that are as much as ten times lower compared to conventional
surfactant adjuvants. Compatible with many agrochemical components, Silwet
HS-429 penetrant is easily dispersed into glyphosate formulations; yielding
products with excellent clarity, phase stability and storage stability.

    To find out more about Silwet HS-312 spreader and Silwet HS-429
penetrant, please call 800.295.2392 in North America (+607.786.8131 everywhere
else) or visit

    About Momentive Performance Materials

    Momentive Performance Materials Inc. is a premier specialty materials
company, providing high-technology materials solutions to the silicones,
quartz and ceramics markets. The company, as a global leader with worldwide
operations, has a robust product portfolio, an enduring tradition of service
excellence, and industry-leading research and development capabilities.
Momentive Performance Materials Inc. is owned by an affiliate of Apollo
Management, L.P. Additional information is available at

    (*)Silwet is a trademark of Momentive Performance Materials Inc.

    Silwet(*) HS-312 spreader and HS-429 penetrant are the subjects of one or
more pending US and foreign patent applications.

    Copyright 2007 Momentive Performance Materials Inc. All rights reserved.

For further information:

For further information: Momentive Performance Materials Nancy Pitts,

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