Chain Extender & Crosslinker

The SI Group portfolio of POLYBOND™ coupling agents offers improved performance for wire and cable compounders utilizing HFFR solutions.

The portfolio of WESTON™ liquid phosphite antioxidants offers excellent synergism, improved color, and processing stability and offers a variety of food contact approvals depending on your plastic applications.

Polypropylene systems have high stabilization demands. To meet increasing melt, color, and storage performance standards, SI Group has launched the ULTRANOX™ 800 antioxidant series.

The POLYBOND™ 3200 from SI Group is legendary for its performance as a coupling agent in plastic applications. The 3200 outperforms other coupling agents with superior thermal stability, color control and less degradation.

The SI Group portfolio of POLYBOND™ coupling agents improves mechanical performance for recycled filled composites by strengthening the coupling bond.

The SI Group portfolio of WESTON™ phosphite antioxidants protects plastics and elastomers from peroxide decomposers and offers excellent synergism with primary antioxidants, such as hindered phenols. 

ULTRANOX™ 626 is a high active content organophosphit antioxidant for exceptional protection at lower loading rate and lower cost.

ETHANOX™ 330 is a hindered phenolic antioxidant designed for long-term stability and exceptional protection against water treeing in extruded wire and cable insulations and jacketing.