Basf Se Corporation

John A Sigler

Stephen Mark Andrews

Thomas Friend Thompson

Jiong Yu

Eric Wallis

Polyolefin hollow articles prepared via a rotomolding process are provided flame retardancy by incorporating therein a phosphonate ester, an N-alkoxy hindered amine and melamine cyanurate.

Flame retardant rotomolded polyolefin

The present invention relates to a process for the production of polyethylene hollow articles, which process comprises charging the polyethylene with one or more NO-acyl hindered amine additives containing one or more groups of formula (I), filling this mixture into a mold, heating this mold in an oven to above 280&#xb0; C., such that the additized polyethylene melts, rotating the mold around at least 2 axes, the additized polyethylene spreading to the walls, cooling the mold while still rotating, opening it, and taking the resultant hollow article out, where the group of formula (I) is where

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Plainsboro, NJ, United States of America

John A Sigler