Polypropylene foams examples of properties

An interesting development originating from Neste and Norsk Hydro is a multilayer coating for the insulation of deep-water pipelines. The steel pipe is protected by a layer of solid thermoplastic, a core of polypropylene foam and a coating of solid plastic. All the layers are built up by cross head extrusion. 

Styrene-acrylonitrile foam Core-Cell by ATC Chemicals 

This rigid linear foam with closed cells was developed by ATC Chemicals Company to be used as the core in lightweight structural sandwich composites particularly intended for boatbuilding. SAN foams have  

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