Carilon, production

Even after Shell announced the closure of their plant for Carilon production and despite the uncertain future of this commercial thermoplastic material, investigations are still being conducted. This is probably a consequence of the growing interest in catalysis by late transition metals for the polymerization and co-poly-merization of olefins. Comprehensive reviews of this subject have appeared [4, 5] and will be taken as the basis for the following discussion. 

Shell s process-related patents often use the propane bridged l,3-bis-(di-2-anisylphosphmo)propane as the ligand (dapp) [36]. Carilon, Shell s trade name for the terpolymer of ethene, CO and propene - added for lowering the processing temperature of the product - has been in commercial production on a relatively small scale in the late nineties. 

In 1996, Shell started commercial production of a number of PK-EP engineering thermoplastic grades, marketed under the trade name of Carilon Polymer. 

LNP also sought licenses from polymer producers to manufacture compounds based on imique materials, such as Dow s syndiotactic polystyrene, DuPont s amorphous LCPs, and Shell Chemicals aliphatic polyketone "Carilon" (no longer in commercial production). These were not exclusive agreements, but they served to protect LNP s rights to develop patented compounds based on unique materials in cooperation with the polymer producer, but without fear of the results being shared with other compounders... 

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