Irgatec®CR76 IC is a novel, peroxide free polymer modifier for polypropylene. Tt allows a controlled degradation of polypropylene during processing leading to a narrow molecular weight distribution. It is highly efficient at extrusion temperatures exceeding 250 °C and therefore particularly suited for polypropylene melt blown applications.

Applications

Irgatec® CR 76 IC is recommended for the controlled degradation of a low melt flow polypropylene, typically a spun bond grade (MF = 20 to 35 g/10min), to a high melt flow grade, as required for the PP melt blown spinning. It is directly added into the extruder of a melt blown line. Irgatec® CR 76 IC is available as a pre-dispersed concentrate, which guaranties a homogeneous distribution during extrusion. It is highly efficient at processing temperatures exceeding 250 °C.

Irgatec® CR 76 IC can also be used for modification of spun bond PP grades to slightly increase the melt flow and to broaden the bonding window of spun bond non-wovens. Other possible applications include crosslinking of polyethylene, grafting of unsaturated monomers onto polyolefins and radical assisted reactive extrusion processes.

Features & Benefits

Irgatec® CR 76 IC is a highly efficient, peroxide free radical generator for the controlled degradation of polypropylene based on an innovative chemistry.Polypropylene degraded by Irgatec® CR 76 IC is characterized by a very narrow molecular weight distribution having a low content of volatiles.Polypropylene melt blown non-wovens produced with Irgatec® CR 76 IC exhibit higher hydrostatic height, improved air permeability as well as higher long-term thermal stability. The mechanical properties such as tenacity and elongation are also improved.

Properties

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