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1. IN6377/CHENP/2008 - HIGH-DENSITY POLYETHYLENE COMPOSITIONS AND METHOD OF MAKING THE SAME

Office India
Application Number 6377/CHENP/2008
Application Date 21.11.2008
Publication Number 6377/CHENP/2008
Publication Date 27.03.2009
Publication Kind A
IPC
C08F 21/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
21Copolymers of compounds covered by group C08F11/ with or without compounds covered by groups C08F3/, C08F5/, C08F7/, C08F9/380
02with styrene, its homologues, or halogenated derivatives thereof
Applicants DOW GLOBAL TECHNOLOGIES, INC,
Inventors MICHIE, WILLIAM, J.,
WILSON, DEBRA, R.,
WHITED,STEPHANIE, M.,
KINNAN, MICHAEL, A.,
Priority Data 11438754 23.05.2006 US
Title
(EN) HIGH-DENSITY POLYETHYLENE COMPOSITIONS AND METHOD OF MAKING THE SAME
Abstract
(EN)
AbstractHIGH-DENSITY POLYETHYLENE COMPOSITIONS AND METHOD OF MAKING THE SAMEThe instant invention is a high-density polyethylene composition, method of making the same, and articles made therefrom. The high-density polyethylene composition of the instant invention includes an ethylene alpha-olefin copolymer having a density in the range of 0.935 to 0.952 g/cm"\ a melt index (I2) in the range of 30 to 75 g/10 minutes, an I2i / h ratio in the range of 13-35, a Mw/Mn ratio in the range of 3.5-8. The high-density polyethylene composition has a brittleness temperature of at least less than -20 °C. The process for producing a high-density polyethylene composition according to instant invention includes the following steps: (1) introducing ethylene, and one or more alpha-olefin comonomers into a reactor; (2) (co)polymerizing the ethylene in the presence of the one or more alpha-olefin comonomers in the reactor; and (3) thereby producing the high-density polyethylene composition, wherein the high- density polyethylene composition having a density in the range of 0.935 to 0.952 g/cmJ, a melt index (12) in the range of 30 to 75 g/10 minutes, an I2i / h ratio in the range of 13-35, a Mw/Mn ratio in the range of 3.5-8, and a brittleness temperature of at least less than -20 rC. Articles according to the instant invention include the inventive high-density polyethylene composition.