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Niax* Silicone L-6635

Premium, Surface Voids-Reduction Silicone Copolymer

Because it can help impart improved compression strength and dimensional stability while maintaining fine cells, Niax silicone L-6635 additive is an excellent candidate to consider for use in rigid polyurethane foams manufactured with a continuous lamination process. A premium silicone copolymer, Niax silicone L-6635 additive may also be considered for fixed-gap lamination and gastight facings, or other products that require the reduction of surface and subsurface voids.

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  • Technical Documents

North America Urethane Additives Guide
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More About Niax* Silicone L-6635

Its ability to minimize voids stems from reduced cell coalescence during foam flow and under high shear-stress conditions. As a result, compression strength and dimensional stability may be improved as well as maintaining fine cells and reducing foam anisotropy, making it a choice to consider for the block and discontinuous process.

Niax silicone L-6635 additive can offer excellent foam-surface quality in sandwich panels produced by continuous lamination, pentane blown and with both polyurethane and polyisocyanurate chemistry. It also may be an excellent performer when n-pentane is the blowing agent, particularly with high use levels. It may also be considered for use as a surfactant, typically offering good foam stability and blowing-agent compatibility in rigid foam applications.

For key features, typical benefits and physical properties, potential applications, and more, please download the marketing bulletin on this page.

* Niax is a trademark of Momentive Performance Materials Inc.

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*The marks followed by an asterisk (*) are trademarks of Momentive Performance Materials Inc.