WO1999006482A1 - Composition comprenant plastomere metallocene de densite inferieure a 0.900 et copolymere ethylene/(meth)acrylate d'alkyle - Google Patents
Composition comprenant plastomere metallocene de densite inferieure a 0.900 et copolymere ethylene/(meth)acrylate d'alkyle Download PDFInfo
- Publication number
- WO1999006482A1 WO1999006482A1 PCT/FR1998/001695 FR9801695W WO9906482A1 WO 1999006482 A1 WO1999006482 A1 WO 1999006482A1 FR 9801695 W FR9801695 W FR 9801695W WO 9906482 A1 WO9906482 A1 WO 9906482A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ethylene
- copolymer
- meth
- alkyl
- acrylate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
- C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
- C08L23/0869—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/06—Metallocene or single site catalysts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2839—Web or sheet containing structurally defined element or component and having an adhesive outermost layer with release or antistick coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2861—Adhesive compositions having readily strippable combined with readily readhearable properties [e.g., stick-ons, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31913—Monoolefin polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31928—Ester, halide or nitrile of addition polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31935—Ester, halide or nitrile of addition polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to a new composition of metallocene plastomer and of ethylene / alkyl (meth) acrylate copolymer, as well as to the objects obtained from this.
- Copolymers of ethylene and alpha-olefin obtained by metallocene monosite catalysis are known. These copolymers being homogeneous in composition, it has been possible to prepare products having a density of, for example, between 0.905 and 0.880 g / cm 3 , called plastomers, having good mechanical and optical properties.
- US-P-3176052 describes a homogeneous mixture comprising, by weight, (a) 25 to 95% of an ethylene / alpha-olefin copolymer obtained by Ziegler-Natta catalysis having a density greater than 0.92 g / cm 3 and a MFI of between 0.1 and 10 dg / min, heterogeneous in composition, and (b) 75 to 5% of a radical polyethylene having a density of between 0.91 and 0.94 g / cm 3 .
- US-P-4623581 describes a homogeneous mixture comprising, by weight, (a) 25 to 98% of a heterogeneous ethylene / alpha-olefin copolymer in composition having a density between 0, 905 and 0.940 g / cm 3 and an MFI included between 0.4 and 3 dg / min, and (b) 75 to 2% of a radical polyethylene having a density between 0.91 and 0.94 g / cm 3 , having a polydispersity index greater than 4, said copolymer having specific properties of crystallinity and distribution of alpha-olefin monomers.
- the radical polyethylene according to this document can be a copolymer of ethylene with up to 25% by weight of an alkyl acrylate, for example 17.5% by weight of butyl acrylate.
- alkyl acrylate for example 17.5% by weight of butyl acrylate.
- these modified ethylene polymers do not have a polydispersity index of between 2.7 and 4.1 (with reference to document EP-A-0006110); these modified ethylene polymers therefore have a satisfactory rheology which does not need to be modified.
- EP-A-0006110 describes a mixture comprising, by weight,
- WO-A-9507314 describes packages produced from substantially linear ethylene / alpha-olefin copolymers having low polydispersity indices, for example between 1.5 and 2.5.
- This document describes the addition of several types of modifiers of film properties, including rheological modifiers, while indicating that the ethylene / alpha-olefin copolymers are preferably used alone.
- the modifiers indicated in the description include LDPE, EVA, EVOH, PB, HDPE and LLDPE.
- the example mentioned in this patent indicates as a rheological modifier of LDPE or a linear EP copolymer.
- these rheological modifiers have very high modules, and therefore do not allow the industrial production of film having sufficient qualities.
- Another possible modifier according to this document is an EVA; however, this modifier cannot be extruded at a sufficiently high temperature because it degrades at temperatures of 220 ° C. or even less.
- US-P-5326602 describes compositions comprising an ethylene polymer with an ethylene / acrylate copolymer.
- the ethylene polymer is obtained by Ziegler-Natta catalysis, and does not have a narrow molecular distribution.
- this document does not describe the action of the ethylene / acrylate copolymer on the processability of an ethylene polymer.
- compositions comprising a particular ethylene metallocene polymer, intended for the manufacture of heat-shrinkable films. According to this document, this metallocene polymer can be mixed with a thermoplastic polymer. However, the only examples are for adding EVA.
- EP-A-0597502 describes compositions comprising an ethylene metallocene polymer having a density of at least 0.900 g / cm 3 , also intended for the manufacture of heat-shrinkable films. According to this document, this polymer metallocene can be mixed with a thermoplastic polymer of the radical ethylene copolymer type. Although the ethylene / acrylate copolymers are specifically mentioned, the only examples aim to add EVA.
- EVA is not stable at high extrusion temperatures, in particular of the order of 200 to 220 ° C.
- the invention provides a composition comprising, by weight: (i) from 1 to 99%, preferably 50 to 95%, of metallocene ethylene / alpha-olefin copolymer having a density of less than 0.900 g / cm 3 ; and
- ethylene / alkyl (eth) acrylate radical copolymer (ii) from 99 to 1%, preferably 50 to 5%, of ethylene / alkyl (eth) acrylate radical copolymer.
- the content of ethylene / (meth) acrylate radical copolymer is between 5 and 25%.
- the flexural modulus of each copolymer is between 10 and 100 MPa.
- the ratio of the flexural modules, as well as the secant modules, is advantageously greater than 1.
- the ethylene / alpha-olefin metallocene copolymer for example has a polydispersity index between 2 and 5 and preferably between 2 and 3.
- the ethylene / alpha-olefin metallocene copolymer has for example a density between 0.900 and
- the ethylene / alpha-olefin metallocene copolymer has, for example, an MFI of between 0.5 and 10, and preferably between 0.8 and 5.
- the ethylene / alkyl (meth) acrylate radical copolymer comprises, for example, by weight relative to the weight of the copolymer, from 5 to 40% of a C1 to C8 alkyl (meth) acrylate.
- the ethylene / alkyl (meth) acrylate radical copolymer has, for example, an MFI of between 0.3 and 10.
- the subject of the invention is also a film obtained from a composition according to the invention, preferably extruded.
- the invention particularly relates to a tacky stretch film obtained from the composition according to the invention.
- the subject of the invention is also a method of extruding the composition according to the invention at a temperature greater than or equal to 200 ° C., for example between 210 and 230 ° C., in particular for the manufacture of film.
- metallocene ethylene / alpha-olefin copolymer designates these copolymers obtained by metallocene catalysis, and will be indifferently called “plastomers” or "ethylene metallocene copolymer” in the present description.
- this metallocene catalysis is a monosite catalysis using a catalyst generally consisting of a metal atom between two alkyl rings bonded to the metal.
- a catalyst generally consisting of a metal atom between two alkyl rings bonded to the metal.
- the metal all the metals of the transition groups IVA, VA and VIA, as well as the lanthanides, can be used.
- Preferred metals are hafnium, zirconium and titanium.
- Cyclopentadiene is generally used as the alkyl ring.
- a cocatalyst or activator is also optionally used, for example an aluminoxane, such as methylaluminoxane (MAO).
- MAO methylaluminoxane
- alpha-olefin any alpha-olefin having 3 to 12 carbon atoms is used, preferably from 3 to 8.
- alpha-olefins are propylene, butene, hexene and octene.
- a preferred alpha-olefin is octene.
- the proportion of alpha-olefin in the plastomer can range up to 40% by weight and varies conventionally between 10 and 35% by weight, for example between 10 and 30%.
- octene is used as alpha-olefin, the proportion being for example in particular between 20 and 25%.
- plastomers of the invention are homogeneous in composition.
- the density of these metallocene copolymers is less than 0.900 g / cm 3 , generally between 0.900 and 0.875 g / cm 3 , preferably between 0.900 and 0.880 g / cm 3 .
- the polydispersity index of these plastomers is low, generally between 2 and 5, preferably between 2 and 3.
- MFI melt flow index, as measured according to standard ASTM D 1238-73 is generally between 0.5 and 10, preferably between 0.8 and 5.
- plastomers are substantially linear.
- the flexural modulus of these plastomers is preferably between 10 and 100 MPa; for example between 10 and 50 MPa Mixtures of plastomers are also envisaged.
- Such plastomers are commercially available from Dow and Exxon, respectively under the names Affinity and Exact.
- ethylene / alkyl (meth) acrylate radical copolymer designates these copolymers comprising, by weight relative to the weight of said copolymer, up to 60% by weight of alkyl (meth) acrylate, obtained by synthesis with initiator free radicals, and will be interchangeably called "ethylene / (meth) acrylate copolymer” or "EAA copolymer” in the present description.
- EAA copolymers are generally obtained in a high pressure process, and generally show a broad molecular distribution and long branching
- EAA are given, for example in US-P-4,617,366 and US-P-5,543,233, incorporated by reference.
- the content by weight of (meth) acrylate, relative to the weight of the EAA copolymer, is generally between 1 and 60%, in particular between 5 and 40%.
- alkyl (meth) acrylate denotes linear, branched or cyclic alkyl methacrylate and acrylate containing from 1 to 12, preferably from 1 to 8 carbon atoms, for example methyl, ethyl, butyl, and
- EAA copolymer examples include methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate.
- the MFI index of these EAA copolymers is generally between 0.1 and 400 dg / min, for example between 0.3 and 10 dg / min.
- EAA copolymers may possibly be present in the EAA copolymers, as long as the final properties are not affected.
- examples of such termonomers are vinyl esters of saturated carboxylic acid, maleic anhydride and glycidyl (meth) acrylate. This termonomer can be present in an amount for example up to 10% by weight, relative to the weight of said EAA copolymer, and can be grafted or terpolymerized.
- the flexural modulus of these EAA copolymers is preferably between 10 and 100 MPa; for example between 10 and 50 MPa.
- Blends of EAA copolymers are also contemplated.
- a preferred EAA comprises a methyl acrylate and / or has an MFI of between 3 and 10 and / or comprises between 20 and 35% by weight of acrylate.
- EAA copolymers are commercially available from Elf Atochem, under the name Lotryl®.
- a particular embodiment corresponds to that where the ratio: flexural modulus of the plastomer
- EAA copolymer flexural modulus is greater than 1, and for example between 1 and 3.
- EAA copolymer secant module is greater than 1, and for example between 1 and 3. Such a ratio is advantageous, for example for the films obtained from the compositions of the invention.
- additives and adjuvants can be added to the mixtures according to the invention, in amounts conventional for a person skilled in the art.
- additives are anti-UV, antioxidants, pigments, fillers such as silica, fibers, etc.
- the invention also provides the objects obtained from these mixtures, and in particular films.
- the film thickness is conventional, for example between 10 and 500 ⁇ m. These films are produced on conventional installations for PE, LDPE, etc.
- the films according to the invention comprise at least one layer obtained from a composition according to the invention.
- the films according to the invention comprise a sticky layer and are sticky stretch films.
- the tacky layer according to the invention sufficiently comprises the EAA copolymer, advantageously from 5 to 50%, EAA polymer in which the content of acrylate comonomer is advantageously between 10 and 35%, preferably between 20 and 35%.
- the films according to the invention comprise a tacky layer obtained from the composition according to the invention, and a sliding layer.
- This sliding layer can be obtained from a polyolefin, such as polypropylene or polyethylene (LLDPE, LDPE, metallocene).
- This sliding layer can also contain anti-sticking and / or sliding additives.
- the sticky layer represents from 5 to 95%, preferably 5 to 35%, advantageously 10 to 20% of the combined thickness of the sticky and slippery layers.
- the mixtures according to the invention can be prepared by any conventional process, in particular by compounding, using for example single-screw extruders with kneader profile, twin-screw extruders, internal mixers, roller mixers, etc. Mixtures can also be produced directly with processing extruders, in sheath, film, profile extrusion, on an injection molding machine, etc. Conditions are the conventional ones for PE, LDPE, etc.
- compositions of the invention are extruded at temperatures greater than or equal to 200 ° C, for example between 210 and 230 ° C, without risking degradation of the products.
- the invention therefore allows (i) modification of metallocene plastomers to give them processability, in particular by reducing the specific energy and improving the stability of the extrudate and at the same time (ii) modifying EAA copolymers to improve their mechanical and optical properties.
- compositions are produced from the following copolymers:
- the copolymer C is extruded alone.
- the extrusion is stable at a flow rate of 35 kg / h, and there is an engine power take-off corresponding to approximately 65% of the maximum.
- Example 1
- the film has good optical properties and improved tear resistance compared to the films of Al and B alone.
- Example 8 20% by weight of the copolymer Al are mixed with 80% by weight of the copolymer B. The extrusion remains stable. There is an improvement in impact resistance. Example 8.
- Example 9 is repeated with the copolymer A2; the same results are obtained.
- Example 11 is repeated, this time with a copolymer with a density of 0.891, comprising 24% by weight of octene. A film is obtained whose sticky properties are very good.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU89853/98A AU8985398A (en) | 1997-08-01 | 1998-07-30 | Composition comprising metallocene plastomer of density less than 0.900 and ethylene /alkyl (meth)acrylate copolymer |
| US09/463,922 US6534173B1 (en) | 1997-08-01 | 1998-07-30 | Films comprising metallocene catalyzed plastomer and ethylene/alkyl (meth)acrylate copolymer |
| EP98941496A EP1000120A1 (fr) | 1997-08-01 | 1998-07-30 | Composition comprenant plastomere metallocene de densite inferieure a 0.900 et copolymere ethylene/(meth)acrylate d'alkyle |
| CA002297810A CA2297810A1 (fr) | 1997-08-01 | 1998-07-30 | Composition comprenant plastomere metallocene de densite inferieure a 0.900 et copolymere ethylene/(meth)acrylate d'alkyle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9709859 | 1997-08-01 | ||
| FR97/09859 | 1997-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999006482A1 true WO1999006482A1 (fr) | 1999-02-11 |
Family
ID=9509919
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1998/001696 Ceased WO1999006483A1 (fr) | 1997-08-01 | 1998-07-30 | Composition comprenant plastomere metallocene et copolymere ethylene/(meth)acrylate d'alkyle avec un rapport de leurs modules secants superieur a 1 |
| PCT/FR1998/001695 Ceased WO1999006482A1 (fr) | 1997-08-01 | 1998-07-30 | Composition comprenant plastomere metallocene de densite inferieure a 0.900 et copolymere ethylene/(meth)acrylate d'alkyle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1998/001696 Ceased WO1999006483A1 (fr) | 1997-08-01 | 1998-07-30 | Composition comprenant plastomere metallocene et copolymere ethylene/(meth)acrylate d'alkyle avec un rapport de leurs modules secants superieur a 1 |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US6509090B1 (fr) |
| EP (2) | EP1000120A1 (fr) |
| AT (1) | ATE225824T1 (fr) |
| AU (2) | AU8985398A (fr) |
| CA (2) | CA2297810A1 (fr) |
| DE (1) | DE69808636T2 (fr) |
| ES (1) | ES2181261T3 (fr) |
| WO (2) | WO1999006483A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509090B1 (en) * | 1997-08-01 | 2003-01-21 | Elf Atochem S.A. | Composition comprising metallocene plastomer and ethylene/alkyl (meth) acrylate polymer with their secant moduli ratio greater than 1 |
| US8197927B2 (en) * | 2007-06-15 | 2012-06-12 | Berry Plastics Corporation | Slip-cling stretch film |
| US7611768B2 (en) | 2007-06-15 | 2009-11-03 | Berry Plastics Corporation | Slip-cling stretch film |
| EP4019582B1 (fr) | 2020-12-23 | 2025-07-30 | Borealis GmbH | Film de polyéthylène |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006857A1 (fr) * | 1992-09-16 | 1994-03-31 | Exxon Chemical Patents Inc. | Films souples a caracteristiques physiques ameliorees |
| US5326602A (en) * | 1992-12-01 | 1994-07-05 | Union Carbide Chemicals & Plastics Technology Corporation | Polyethylene blends |
| US5593747A (en) * | 1993-07-12 | 1997-01-14 | Viskase Corporation | Puncture resistant heat shrinkable film containing narrow molecular weight ethylene alpha olefin |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3176052A (en) | 1960-08-08 | 1965-03-30 | Du Pont | Blends of polyethylene and ethylene copolymers |
| US4243619A (en) | 1978-03-31 | 1981-01-06 | Union Carbide Corporation | Process for making film from low density ethylene hydrocarbon copolymer |
| FR2528054B1 (fr) | 1982-06-03 | 1986-05-16 | Charbonnages Ste Chimique | Compositions de copolymeres ethylene/a-olefine et de polyethylene radicalaire et leur application a la fabrication de films |
| US5051297A (en) * | 1986-04-25 | 1991-09-24 | Rexene Products Company | Novel film compositions |
| EP0597502B1 (fr) | 1992-11-13 | 2005-03-16 | Cryovac, Inc. | Films rétractables à la chaleur contenant des copolymères catalisés par cataliseurs de site singulier |
| US5525659A (en) | 1993-09-08 | 1996-06-11 | The Dow Chemical Company | Batch inclusion packages |
| US5998017A (en) * | 1996-03-12 | 1999-12-07 | Tenneco Packaging | Stretch wrap films |
| US6509090B1 (en) * | 1997-08-01 | 2003-01-21 | Elf Atochem S.A. | Composition comprising metallocene plastomer and ethylene/alkyl (meth) acrylate polymer with their secant moduli ratio greater than 1 |
-
1998
- 1998-07-30 US US09/463,921 patent/US6509090B1/en not_active Expired - Fee Related
- 1998-07-30 DE DE69808636T patent/DE69808636T2/de not_active Expired - Fee Related
- 1998-07-30 CA CA002297810A patent/CA2297810A1/fr not_active Abandoned
- 1998-07-30 AU AU89853/98A patent/AU8985398A/en not_active Abandoned
- 1998-07-30 AT AT98941497T patent/ATE225824T1/de not_active IP Right Cessation
- 1998-07-30 CA CA002297811A patent/CA2297811A1/fr not_active Abandoned
- 1998-07-30 WO PCT/FR1998/001696 patent/WO1999006483A1/fr not_active Ceased
- 1998-07-30 WO PCT/FR1998/001695 patent/WO1999006482A1/fr not_active Ceased
- 1998-07-30 US US09/463,922 patent/US6534173B1/en not_active Expired - Fee Related
- 1998-07-30 ES ES98941497T patent/ES2181261T3/es not_active Expired - Lifetime
- 1998-07-30 AU AU89854/98A patent/AU8985498A/en not_active Abandoned
- 1998-07-30 EP EP98941496A patent/EP1000120A1/fr not_active Withdrawn
- 1998-07-30 EP EP98941497A patent/EP0998527B1/fr not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006857A1 (fr) * | 1992-09-16 | 1994-03-31 | Exxon Chemical Patents Inc. | Films souples a caracteristiques physiques ameliorees |
| US5326602A (en) * | 1992-12-01 | 1994-07-05 | Union Carbide Chemicals & Plastics Technology Corporation | Polyethylene blends |
| US5593747A (en) * | 1993-07-12 | 1997-01-14 | Viskase Corporation | Puncture resistant heat shrinkable film containing narrow molecular weight ethylene alpha olefin |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2297811A1 (fr) | 1999-02-11 |
| WO1999006483A1 (fr) | 1999-02-11 |
| ATE225824T1 (de) | 2002-10-15 |
| AU8985398A (en) | 1999-02-22 |
| CA2297810A1 (fr) | 1999-02-11 |
| AU8985498A (en) | 1999-02-22 |
| ES2181261T3 (es) | 2003-02-16 |
| EP0998527A1 (fr) | 2000-05-10 |
| DE69808636D1 (de) | 2002-11-14 |
| US6534173B1 (en) | 2003-03-18 |
| DE69808636T2 (de) | 2003-07-10 |
| US6509090B1 (en) | 2003-01-21 |
| EP1000120A1 (fr) | 2000-05-17 |
| EP0998527B1 (fr) | 2002-10-09 |
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