Patent ID: 6670412
Filing Date: 2003-12-30
Classification: C08K,C08L

Abstract:
A method for processing an amine containing linear polyethylene into an article comprising:a) selecting a linear polyethylene from the group of linear low density polyethylene (LLDPE), metallocene-linear low density polyethylene (m-LLDPE), high density polyethylene (HDPE), plastomers, medium density polyethylene (MDPE), ultra-high molecular weight-high density polyethylene (UHMW-HDPE) and combinations thereof; b) selecting one or more amine stabilizers from a sterically hindered piperidine group structure of the general formula: where R1 is one of hydrogen, hydroxyl, straight chain or branched alkyl of 1 to 18 carbons, straight chain or branched alkoxy of 1 to 18 carbons, aryl, arylalkyl of 7 to 18 carbons, cycloalkyl of 5 to 18 carbons, cycloalkoxy of 5 to 18 carbons; the alkyl, alkoxy, aryl, arylalkyl, cycloalkyl or cycloalkoxy groups may optionally contain one or more hydroxyl groups; R2 is one of aliphatic amine, aliphatic diamine, aromatic amine, straight chain or branched alkyl of 1 to 18 carbons, aliphatic ester, cycloalkyl of 5 to 18 carbons wherein said aliphatic amine, aliphatic diamine, aromatic amine, alkyl, aliphatic ester, or cycloalkyl group is optionally bound to an aliphatic carbon or silicone based chain which may optionally contain one or more triazine groups, the aliphatic carbon or silicone based chain may optionally be polymerizable; c) selecting a surfactant, said surfactant is a monovalent salt of an alkene sulfonate, hydroxy alkane sulfonate, or mixtures thereof; d) placing an amount of said surfactant into said polyethylene sufficient to reduce melt fracture and torque; and e) melt processing said polyethylene, said amine and said surfactant to form an article.