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Silicones from Dow Corning
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Improve Polymer Properties with Grafting Aids

Improve Polymer Properties with Grafting Aids

Advanced technologies call for materials with exceptional properties. However, developing a new polymer can be time-consuming, and settling for an existing, over-engineered material can be expensive. Grafting is faster than developing a new material and it yields copolymers that offer specific performance improvements or additional properties for targeted applications. Importantly, grafted compounds act like crosslinked materials, but can be re-melted and re-shaped.

In PP, Dow Corning's patented grafting technology acts as a knot between polymer chains to form branches. This modified PP can enable crosslinking in injection-molded parts to improve high temperature resistance, boost tensile and flexural strength and increase heat-aging performance. Our technology also offers the potential to replace reinforced PA and PET with cost-effective, lower-density PP composites.

Solving Your Processing Challenges

In demanding automotive under-hood electrical, cooling, transmission and engine applications, using Dow Corning's grafting technology to enhance composites based on PP resins is a promising and economically viable approach for reducing weight to raise fuel efficiency and lower emissions.

Our silane grafting technology offers these additional benefits:

  • Improves HDT and mechanical properties by approximately 20%
  • Offers cost reduction potential of 30% to 35% by replacing PA with PP
  • Combines crosslinked behavior with thermoplastic capabilities
  • Enables over-engineered materials to be replaced with cost-effective copolymers

Product highlights include:

  • Dow Corning® 32-441 Additive (PDF): Designed for glass fiber-reinforced PP, this additive improves flow, impact and isotropic performance, and aging.

Find out how Dow Corning can help you improve application performance with silicone-based material reinforcement  additives. It's as easy as contacting your Dow Corning representative.

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