Process for the controlled increase in the molecular weight of polyethylenes
申请人:Roth Michael
公开号:US20080146740A1
公开(公告)日:2008-06-19
The invention relates to hydroxylamine esters and polymerizable compositions comprising these hydroxylamine esters and an ethylenically unsaturated monomer or oligomer and methods for achieving a controlled increase in the molecular weight of polyethylene.
METHOD OF PREPARING ETHYLENE POLYMERS BY CONTROLLED HIGH PRESSURE POLYMERIZATION
申请人:ROTH MICHAEL
公开号:US20100210800A1
公开(公告)日:2010-08-19
The present invention relates to a method for the radical polymerization or copolymerization of ethylene at high pressures using a hydroxylamine ester as radical initiator. The hydroxylamine esters according to the invention are suitable initiators for the high pressure polymerization of ethylene leading to high molecular weight polyethylenes with narrow molecular weight distributions (Poyldispersity Index PD=1.2-4.5).