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1. WO2009105938 - ORIENTED FILMS COMPRISING ETHYLENE/&Agr;-OLEFIN BLOCK INTERPOLYMER

Publication Number WO/2009/105938
Publication Date 03.09.2009
International Application No. PCT/CN2008/070390
International Filing Date 29.02.2008
IPC
C08L 23/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
C08J 5/18 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
CPC
C08J 2323/08
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2323Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
02not modified by chemical after treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
C08J 5/18
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
5Manufacture of articles or shaped materials containing macromolecular substances
18Manufacture of films or sheets
C08L 23/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
C08L 23/0815
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
23Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
02not modified by chemical after-treatment
04Homopolymers or copolymers of ethene
08Copolymers of ethene
0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
0815Copolymers of ethene with aliphatic 1-olefins
Y10T 428/2495
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
24Structurally defined web or sheet [e.g., overall dimension, etc.]
24942including components having same physical characteristic in differing degree
2495Thickness [relative or absolute]
Y10T 428/31909
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
31504Composite [nonstructural laminate]
31855Of addition polymer from unsaturated monomers
31909Next to second addition polymer from unsaturated monomers
Applicants
  • DOW GLOBAL TECHNOLOGIES INC. [US]/[US] (AllExceptUS)
  • YUN, Xiaobing [CN]/[CN] (UsOnly)
  • LAI, Shih-Yaw [US]/[CN] (UsOnly)
  • LI, Jing [CN]/[CN] (UsOnly)
  • CHEN, HongYu [CN]/[US] (UsOnly)
  • MAEHARA, Yutaka [JP]/[JP] (UsOnly)
Inventors
  • YUN, Xiaobing
  • LAI, Shih-Yaw
  • LI, Jing
  • CHEN, HongYu
  • MAEHARA, Yutaka
Agents
  • JEEKAI & PARTNERS
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ORIENTED FILMS COMPRISING ETHYLENE/&Agr;-OLEFIN BLOCK INTERPOLYMER
(FR) FILMS ORIENTÉS COMPRENANT UN COPOLYMÈRE SÉQUENCÉ D'ÉTHYLÈNE/ALPHA-OLÉFINE
Abstract
(EN)
The present invention relates to oriented films having improved shrinkage force, shrinkage temperature, tear strength, seal strength and/or bubble stability. For example, the shrink tension of the oriented film stretched at 1100C is less than 3 MPa. The oriented film comprises a polymer composition comprising at least one ethylene/α- olefin interpolymer, wherein the ethylene/α-olefm interpolymer may have, for example, a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm > -6553.3 + 13735(d) - 7051.7(d)2.
(FR)
La présente invention concerne des films orientés ayant de meilleures force de rétrécissement, température de rétrécissement, résistance au déchirement, résistance de scellage et/ou stabilité aux bulles. Par exemple, la tension de rétrécissement du film orienté étiré à 110 °C est inférieure à 3 MPa. Le film orienté comprend une composition de polymère comprenant au moins un copolymère d'éthylène-α-oléfine, le copolymère d'éthylène-α-oléfine pouvant avoir, par exemple, un rapport Mw/Mn d'environ 1,7 à environ 3,5, au moins un point de fusion, Tm, en degrés Celsius, et une masse volumique, d, en grammes/centimètre cube, dont les valeurs numériques Tm et d satisfont à la relation : Tm > -6553,3 + 13735(d) - 7051,7(d)2.
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