A stable, plasticized composition of PVC polymer including a C.sub.4-C.sub.30 linear, branched or cyclo-alkyl pyrrolidone present in an amount of 5-400 phr sufficient to plasticize said PVC into a flexible state.

 
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< Polar group-containing olefin copolymer, process for preparing the same, thermoplastic resin composition containing the copolymer, and uses thereof

> Imaging element containing a blocked photographically useful compound
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