Heat Stabilizer optimizes high-consistency silicone rubber.

Press Release Summary:

Offering non-rare earth alternative to traditional heat stabilizers, Silcosperse™ 500 Dispersion maximizes heat stability of high consistency silicone rubber formulations to withstand temperatures up to 500°F. Product is supplied as millable dispersion gum to eliminate problems associated with messy, hard-to-handle alternatives. Available in quantities as low as 10 lb, Silcosperse™ 500 is suitable for seals, covers, insulators, gaskets, and O-rings.

Original Press Release:

PolyOne GSDI Introduces High-Performance Heat Stabilizer for High-Consistency Silicone Applications

BARBERTON, Ohio – GSDI, a subsidiary of PolyOne Corporation and a premier innovator of color and additive dispersions for silicone rubber, has launched Silcosperse™ 500 disperson to help customers enhance the heat resistance to improve High Consistency Silicone Rubber (HCR) performance in specialized, high-temperature applications.  

“Providing customers with the ability to improve the thermal stability of their products will allow them to capture new high-margin opportunities and increase profitability,” explains Bob Bradley, general manager, GSDI. “Silcosperse 500 dispersions are a unique, non-rare earth alternative to traditional heat stabilizers. These unique solutions open the door to help customers reach a number of new and very attractive markets.”

Silcosperse™ 500 dispersions increase the heat stability of HCR silicone formulations to withstand temperatures up to 500°F (260°C), improving suitability for a wide range of market applications in the automotive, aerospace and appliances industries. Examples include seals, covers, insulators, gaskets and O-rings.

Independent test results demonstrate zero compromise in processability and thermal performance when compared to traditional rare earth element-based technologies. In addition, Silcosperse™ 500 dispersion is formulated for faster weigh up and integration during manufacturing to deliver operating efficiencies and total systems cost reduction.

Silcosperse™ 500 dispersion is supplied as a millable dispersion gum to eliminate the problems associated with messy, hard-to-handle alternatives. It is available in quantities as low as 10 lbs. (4.5 kg) to allow for smaller volume, niche applications and inventory optimization.

PolyOne will showcase Silcosperse™ 500 dispersion and additional GSDI (www.gsdi.com) solutions at K 2013 in Düsseldorf from 16–23 October (Stand J13, Hall 8a).

About PolyOne

PolyOne Corporation, with 2012 revenues of $2.9 billion, is a premier provider of specialized polymer materials, services and solutions. The company is dedicated to serving customers in diverse industries around the globe, by creating value through collaboration, innovation and an unwavering commitment to excellence. Guided by its Core Values, Sustainability Promise and No Surprises PledgeSM, PolyOne is committed to its customers, employees, communities and shareholders through ethical, sustainable and fiscally responsible principles. For more information, visit www.polyone.com.

To access PolyOne’s news library online, please go to www.polyone.com/news.

Media contacts

Peter Bredenkamp

Marketing Communications Specialist

PolyOne ColorMatrix

+44(0)7794 006170


Michelle Maniscalco

Marketing Communications Manager, North America

PolyOne Corporation

+1 440-930-1988


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