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March 01, 2005

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Process for making block polymers or copolymers from isotactic polypropylene
February 15, 2005
Grant Doney and Keith Salsmand
This is not a particularly new technology, but I find it interesting in that an extruder can be used as a high shear reactor.  In this case polypropylene is mixed with a free radical generator and degraded.  Unsaturated monomers and or unsaturated polymers are added to form the block copolymers.  Control is always an issue but, this approach seems straightforward, expecially if one is using unsaturated polymers.  The release of smelling monomers into the atmosphere is never a good move. (RDC)

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