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1. WO2007140114 - HIGH-DENSITY POLYETHYLENE COMPOSITIONS AND METHOD OF MAKING THE SAME

Publication Number WO/2007/140114
Publication Date 06.12.2007
International Application No. PCT/US2007/068952
International Filing Date 15.05.2007
IPC
C08F 210/16 2006.01
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
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
B29C 45/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
CPC
B29C 45/0001
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
0001characterised by the choice of material
B29K 2023/065
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2023Use of polyalkenes ; or derivatives thereof; as moulding material
04Polymers of ethylene
06PE, i.e. polyethylene
0608characterised by its density
065HDPE, i.e. high density polyethylene
C08F 210/16
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
210Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
16Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
Applicants
  • DOW GLOBAL TECHNOLOGIES INC. [US]/[US] (AllExceptUS)
  • MICHIE, William, J. [US]/[US] (UsOnly)
  • WILSON, Debra, R. [US]/[US] (UsOnly)
  • WHITED, Stephanie, M. [US]/[US] (UsOnly)
  • KINNAN, Michael, A. [US]/[US] (UsOnly)
Inventors
  • MICHIE, William, J.
  • WILSON, Debra, R.
  • WHITED, Stephanie, M.
  • KINNAN, Michael, A.
Agents
  • ASHBRUG, Ray
Priority Data
11/438,75423.05.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH-DENSITY POLYETHYLENE COMPOSITIONS AND METHOD OF MAKING THE SAME
(FR) COMPOSITIONS DE POLYÉTHYLÈNE HAUTE DENSITÉ ET SON PROCÉDÉ DE FABRICATION
Abstract
(EN)
The 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/cm3, a melt index (I2) in the range of 30 to 75 g/10 minutes, an I21 / I2 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/cm3, a melt index (I2) in the range of 30 to 75 g/10 minutes, an I21 / I2 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 'C. Articles according to the instant invention include the inventive high-density polyethylene composition.
(FR)
La présente invention concerne une composition de polyéthylène haute densité, son procédé de fabrication et des articles fabriqués à partir de celle-ci. La composition de polyéthylène haute densité selon la présente invention comprend un copolymère d'éthylène et d'une alpha-oléfine ayant une masse volumique dans la gamme de 0,935 à 0,952 g/cm3, un indice de fluidité (I2) dans la gamme de 30 à 75 g/10 minutes, un rapport I21/I2 dans la gamme de 13 à 35, un rapport Mm/Mn dans la gamme de 3,5 à 8. La composition de polyéthylène haute densité a une température de fragilité au moins inférieure à –20 °C. Le procédé de production d'une composition de polyéthylène haute densité selon la présente invention comprend les étapes suivantes : (1) introduire de l'éthylène, et un ou plusieurs comonomères de type alpha-oléfine dans un réacteur ; (2) (co)polymériser l'éthylène en présence du ou des comonomères de type alpha-oléfine dans le réacteur ; et (3) produire de ce fait la composition de polyéthylène haute densité, la composition de polyéthylène haute densité ayant une masse volumique dans la gamme de 0,935 à 0,952 g/cm3, un indice de fluidité (I2) dans la gamme de 30 à 75 g/10 minutes, un rapport I21/I2 dans la gamme de 13 à 35, un rapport Mm/Mn dans la gamme de 3,5 à 8 et une température de fragilité au moins inférieure à –20 °C. Les articles selon la présente invention comprennent la composition de polyéthylène haute densité selon la présente invention.
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