CA2372284A1 - Elastic films including crystalline polymer and crystallizable polymers of propylene - Google Patents
Elastic films including crystalline polymer and crystallizable polymers of propylene Download PDFInfo
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- CA2372284A1 CA2372284A1 CA002372284A CA2372284A CA2372284A1 CA 2372284 A1 CA2372284 A1 CA 2372284A1 CA 002372284 A CA002372284 A CA 002372284A CA 2372284 A CA2372284 A CA 2372284A CA 2372284 A1 CA2372284 A1 CA 2372284A1
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- C—CHEMISTRY; METALLURGY
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- 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
- C08L23/10—Homopolymers or copolymers of propene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65908—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
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- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
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- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
- C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
- C08F4/65927—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
- C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
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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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/91—Product with molecular orientation
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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
- Y10T428/31504—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
- Y10T428/31917—Next to polyene polymer
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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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31931—Polyene monomer-containing
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Abstract
Improved thermoplastic polymer elastic film blend compositions including a crystalline isotactic polypropylene component and a crystallizable alpha- olefin and propylene copolymer component, the copolymer having crystallizabl e alpha-olefin sequences. In a preferred embodiment, improved thermoplastic polymer blends are provided made up of from 0 % to 95 %, preferably 2 % to 4 0 weight % of the crystalline isotactic polypropylene and from 5 % to 100 %, preferably 60 % to 98 weight % of a crystallizable ethylene and propylene copolymer, wherein the copolymer has isotactically crystallizable propylene sequences and is predominately propylene. The resultant blends manifest unexpected compatibility characteristics, and improved resistance to elastic deformation of the crystalline isotactic polypropylene and from of a crystallizable ethylene and propylene copolymer.
Claims (13)
1. A soft, set-resistant film comprising a blend of polyolefins, said blend including:
a) first polymer component (FPC) present in said film in the range of from 75-98 weight percent, based on the total weight of said polyolefins;
wherein said FPC has a melting point as determined by differential scanning calorimetry (DSC) in the range of from 25-70°C;
wherein said FPC has a heat of fusion less than 25 J/g;
wherein said FPC is a propylene-ethylene polymer having said propylene present in said FPC at 80 weight percent or greater, having said ethylene present from 8-20 weight percent; and b) a second polymer component (SPC) present in said film in the range of from 2-25 weight percent based on the total polyolefins in said film;
wherein said SPC is a stereoregular isotactic polypropylene;
wherein said SPC has a melting point as determined by DSC greater than 130°C, and a heat of fusion greater than 80 J/g;
wherein said film exhibits a resistance to set equal to or less than that described by the equation:
Set = 7 + [3/1000] x Adjusted Load (L2);
wherein said film at least exhibits a load decay that is equal to or less than 15%; and wherein at least 75% by weight of said FPC may be isolated in one or two adjacent soluble fractions in a saturated hydrocarbon fractionation.
a) first polymer component (FPC) present in said film in the range of from 75-98 weight percent, based on the total weight of said polyolefins;
wherein said FPC has a melting point as determined by differential scanning calorimetry (DSC) in the range of from 25-70°C;
wherein said FPC has a heat of fusion less than 25 J/g;
wherein said FPC is a propylene-ethylene polymer having said propylene present in said FPC at 80 weight percent or greater, having said ethylene present from 8-20 weight percent; and b) a second polymer component (SPC) present in said film in the range of from 2-25 weight percent based on the total polyolefins in said film;
wherein said SPC is a stereoregular isotactic polypropylene;
wherein said SPC has a melting point as determined by DSC greater than 130°C, and a heat of fusion greater than 80 J/g;
wherein said film exhibits a resistance to set equal to or less than that described by the equation:
Set = 7 + [3/1000] x Adjusted Load (L2);
wherein said film at least exhibits a load decay that is equal to or less than 15%; and wherein at least 75% by weight of said FPC may be isolated in one or two adjacent soluble fractions in a saturated hydrocarbon fractionation.
2. The soft, set-resistant film of claim 1 wherein said FPC additionally includes an additional second first polymer component (FPC2);
wherein said FPC2 has a melting point less than 100°C;
wherein said FPC2 has a heat of fusion less than 60 J/g;
wherein said FPC2 is a propylene-ethylene copolymer, and REPLACEMENT PAGE
- 44a -wherein said propylene is present at greater than 75 weight percent, based on the total weight of the copolymer, ethylene making up the balance of said copolymer;
wherein said film has a 1% secant modulus, as determined by ASTM D790, of less than 60 kpsi in/in.
wherein said FPC2 has a melting point less than 100°C;
wherein said FPC2 has a heat of fusion less than 60 J/g;
wherein said FPC2 is a propylene-ethylene copolymer, and REPLACEMENT PAGE
- 44a -wherein said propylene is present at greater than 75 weight percent, based on the total weight of the copolymer, ethylene making up the balance of said copolymer;
wherein said film has a 1% secant modulus, as determined by ASTM D790, of less than 60 kpsi in/in.
3. The soft, set-resistant film of claim 2 wherein said film additionally includes a process oil present in said film in the range of from 1-50 parts per hundred parts of said blend of said polyolefins;
wherein said film has a 1% secant modulus of less titan 30 kpsi in/in.
REPLACEMENT PAGE
wherein said film has a 1% secant modulus of less titan 30 kpsi in/in.
REPLACEMENT PAGE
4. A film including a blend of polymers, said film having excellent resistance to set and excellent resistance to load decay, said blend of polymers being substantially noncrosslinked comprising:
a) a first polymer component (FPC), said FPC has:
i) a composition distribution such that at least 75 weight percent of the polymer is isolated in two adjacent soluble fractions, each of these fractions bas a composition difference of no greater than 20%
(relative) of the average weight percent ethylene content of the whole first polymer component;
ii) a melting point, as determined by differential scanning calorimeter (DSC) less than 105°C;
iii) a heat of fusion less than 45 J/g;
iv) propylene and ethylene present in said FPC, wherein said ethylene is present in said FPC from 8-25 weight percent;
wherein said FPC is present in said blend in the range of from 5-100 weight percent; and b) an optional second polymer component (SPC), said SPC being a crystalline polymer having:
i) a melting point above 115°C;
ii) a heat of fusion above 60 J/g;
iii) propylene present at least 90 weight percent, and an alpha-olefin present at less than 9 weight percent, wherein the total of said propylene and said alpha-olefin in said SPC adds to 100 weight percent;
said SPC being present in said blend in the range of from 0-95 weight percent;
wherein said film exhibits a resistance to set equal to or less than that described by the equation:
Set = 7+ [9/1000] x Adjusted Load (L2);
wherein said film exhibits a load decay that is equal to or less than 20%; and wherein said film has a 1% secant modulus, as determined by ASTM D790 of less than 60 kpsi in/in;
- 45a -wherein at least 75% by weight of said FPC may be isolated in one or two adjacent soluble fractions in a saturated hydrocarbon fractionation.
a) a first polymer component (FPC), said FPC has:
i) a composition distribution such that at least 75 weight percent of the polymer is isolated in two adjacent soluble fractions, each of these fractions bas a composition difference of no greater than 20%
(relative) of the average weight percent ethylene content of the whole first polymer component;
ii) a melting point, as determined by differential scanning calorimeter (DSC) less than 105°C;
iii) a heat of fusion less than 45 J/g;
iv) propylene and ethylene present in said FPC, wherein said ethylene is present in said FPC from 8-25 weight percent;
wherein said FPC is present in said blend in the range of from 5-100 weight percent; and b) an optional second polymer component (SPC), said SPC being a crystalline polymer having:
i) a melting point above 115°C;
ii) a heat of fusion above 60 J/g;
iii) propylene present at least 90 weight percent, and an alpha-olefin present at less than 9 weight percent, wherein the total of said propylene and said alpha-olefin in said SPC adds to 100 weight percent;
said SPC being present in said blend in the range of from 0-95 weight percent;
wherein said film exhibits a resistance to set equal to or less than that described by the equation:
Set = 7+ [9/1000] x Adjusted Load (L2);
wherein said film exhibits a load decay that is equal to or less than 20%; and wherein said film has a 1% secant modulus, as determined by ASTM D790 of less than 60 kpsi in/in;
- 45a -wherein at least 75% by weight of said FPC may be isolated in one or two adjacent soluble fractions in a saturated hydrocarbon fractionation.
5. The film of claim 4 wherein;
a) said FPC has:
i) a composition distribution such that at least 85 weight percent of the polymer is isolated in two adjacent soluble fractions, each of these fractions has a composition difference of no greater than 10%
(relative) of the average weight percent ethylene content of the whole first polymer component;
ii) a melting point less than 100 °C;
iii) a heat of fusion less than 35 J/g;
iv) an ethylene content of 8-20 weight percent, wherein said FPC
additionally contains a diene present in said FPC at less than 10 weight percent, said propylene making up the balance of said FPC;
wherein said FPC is present in said film in the range of from 30-100 weight percent, b) wherein said SPC has;
i) a melting point above 115°C;
ii) a heat of fusion above 70 J/g;
iii) an alpha-olefin present in the range of from 2-8 weight percent, said propylene making up the balance of said SPC;
wherein said SPC being present in said blend in the range of from 0-70 weight percent;
wherein said film exhibits a resistance to set equal to or less than that described by the equation Set = 7+ [6/1000] x Adjusted Load (L2);
wherein said film exhibits a load decay that is equal to or less than 16%; and wherein said film has a 1% secant modulus of less than 30 kpsi in/in.
a) said FPC has:
i) a composition distribution such that at least 85 weight percent of the polymer is isolated in two adjacent soluble fractions, each of these fractions has a composition difference of no greater than 10%
(relative) of the average weight percent ethylene content of the whole first polymer component;
ii) a melting point less than 100 °C;
iii) a heat of fusion less than 35 J/g;
iv) an ethylene content of 8-20 weight percent, wherein said FPC
additionally contains a diene present in said FPC at less than 10 weight percent, said propylene making up the balance of said FPC;
wherein said FPC is present in said film in the range of from 30-100 weight percent, b) wherein said SPC has;
i) a melting point above 115°C;
ii) a heat of fusion above 70 J/g;
iii) an alpha-olefin present in the range of from 2-8 weight percent, said propylene making up the balance of said SPC;
wherein said SPC being present in said blend in the range of from 0-70 weight percent;
wherein said film exhibits a resistance to set equal to or less than that described by the equation Set = 7+ [6/1000] x Adjusted Load (L2);
wherein said film exhibits a load decay that is equal to or less than 16%; and wherein said film has a 1% secant modulus of less than 30 kpsi in/in.
6. The film of claim 4 wherein;
a) said FPC has;
i) a melting point in the range of from 0°-105°C;
ii) a heat of fusion less than 25 J/g;
iii) an ethylene content in the range of from 8-20 weight percent, wherein said FPC contains a diene present in said FPC at less than -46a-5 weight percent, said propylene making up the balance of said FPC;
said FPC is present in said blend from 60-100 weight percent; and b) wherein said SPC has;
i) a melting point above 130°C;
ii) a host of fusion above 80 J/g;
iii) an alpha-olefin present in the range of from 2-6 weight percent, wherein said alpha-olefin is ethylene, the balance of said SPC
being propylene;
said SPC being present in said blend is the range of from 0-40 weight percent;
wherein said film exhibits a resistance to set equal to or less than that described by the equation:
Set = 7+ [3/1000] x Adjusted Load (L2);
wherein said film exhibits a load decay that is equal to or less than 15%; and wherein said film has a 1 % secant modulus of less than 15 kpsi in/in.
a) said FPC has;
i) a melting point in the range of from 0°-105°C;
ii) a heat of fusion less than 25 J/g;
iii) an ethylene content in the range of from 8-20 weight percent, wherein said FPC contains a diene present in said FPC at less than -46a-5 weight percent, said propylene making up the balance of said FPC;
said FPC is present in said blend from 60-100 weight percent; and b) wherein said SPC has;
i) a melting point above 130°C;
ii) a host of fusion above 80 J/g;
iii) an alpha-olefin present in the range of from 2-6 weight percent, wherein said alpha-olefin is ethylene, the balance of said SPC
being propylene;
said SPC being present in said blend is the range of from 0-40 weight percent;
wherein said film exhibits a resistance to set equal to or less than that described by the equation:
Set = 7+ [3/1000] x Adjusted Load (L2);
wherein said film exhibits a load decay that is equal to or less than 15%; and wherein said film has a 1 % secant modulus of less than 15 kpsi in/in.
7. The film of claim 4 wherein;
a) said FPC has;
i) a melting point in the range of from 20°-90°C;
ii) an ethylene content in the range of from 8-20 weight percent, the balance of said FPC is propylene;
wherein said FPC is present in said blend from 75-100 weight percent;
b) wherein said SPC has:
i) a melting point in the range of from 110-170°C;
ii) a heat of fusion above 80 J/g;
iii) an alpha-olefin present in the range of from 2-6 weight percent, wherein said alpha-olefin is ethylene, propylene making up the remainder of said SPC;
said SPC present in said blend in the range of from 0-25 weight percent; and wherein said film has a 1% secant modules of less than 15 kpsi in/in.
a) said FPC has;
i) a melting point in the range of from 20°-90°C;
ii) an ethylene content in the range of from 8-20 weight percent, the balance of said FPC is propylene;
wherein said FPC is present in said blend from 75-100 weight percent;
b) wherein said SPC has:
i) a melting point in the range of from 110-170°C;
ii) a heat of fusion above 80 J/g;
iii) an alpha-olefin present in the range of from 2-6 weight percent, wherein said alpha-olefin is ethylene, propylene making up the remainder of said SPC;
said SPC present in said blend in the range of from 0-25 weight percent; and wherein said film has a 1% secant modules of less than 15 kpsi in/in.
8. The film of any of claims 4-7 wherein said film further comprises a process oil, present in said film in the range of from 1-50 parts per hundred parts of the total of said FPC and said SPC.
-47a-
-47a-
9. The film of any of claims 4-7 wherein said film further comprises a inorganic filler, present in said film in the range of from 2-20 parts per hundred parts of the total of said FPC and said SPC.
10. The film of any of claims 4-7 wherein said film is further manipulated after fabrication by a technique selected from the group consisting of extrusion, calendering, orientation in the range of from 10 - 400 % and combinations thereof, said orientation being in a direction selected from the group consisting of machine direction (MD), transverse direction (TD) and biaxially;
wherein said film is annealed for up to 24 hours at up to 140°C.
wherein said film is annealed for up to 24 hours at up to 140°C.
11. The film of any of claims 1-7 wherein said film is laminated or coextruded with a thermoplastic on one or both sides of the film.
12 The film of any of the claims 1-7 wherein said film is a cast film.
13. A process for preparing the soft, set resistant film of claim 1 comprising:
(a) polymerizing propylene or a mixture of propylene and one or more monomers selected from C2 or C3 - C20 alpha olefins in the presence of a polymerization catalyst wherein a substantially isotactic propylene polymer containing at least 90% by weight polymerized propylene is obtained to form a propylene polymer;
(b) polymerizing a mixture of ethylene and propylene in the presence of a chiral metallocene catalyst, wherein a crystallizable copolymer of ethylene and propylene is obtained comprising from 8-20 % by weight ethylene, containing isotactically crystallizable propylene sequences; and (c) blending the propylene polymer of step (a) with the crystallizable copolymer of step (b) to form a blend.
(a) polymerizing propylene or a mixture of propylene and one or more monomers selected from C2 or C3 - C20 alpha olefins in the presence of a polymerization catalyst wherein a substantially isotactic propylene polymer containing at least 90% by weight polymerized propylene is obtained to form a propylene polymer;
(b) polymerizing a mixture of ethylene and propylene in the presence of a chiral metallocene catalyst, wherein a crystallizable copolymer of ethylene and propylene is obtained comprising from 8-20 % by weight ethylene, containing isotactically crystallizable propylene sequences; and (c) blending the propylene polymer of step (a) with the crystallizable copolymer of step (b) to form a blend.
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US60/133,966 | 1999-05-13 | ||
PCT/US2000/013011 WO2000069963A1 (en) | 1999-05-13 | 2000-05-12 | Elastic films including crystalline polymer and crystallizable polymers of propylene |
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CA2372284A1 true CA2372284A1 (en) | 2000-11-23 |
CA2372284C CA2372284C (en) | 2011-07-05 |
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CA2372284A Expired - Fee Related CA2372284C (en) | 1999-05-13 | 2000-05-12 | Elastic films including crystalline polymer and crystallizable polymers of propylene |
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US (1) | US6500563B1 (en) |
EP (3) | EP1177255B1 (en) |
AT (3) | ATE493266T1 (en) |
AU (3) | AU4849000A (en) |
CA (1) | CA2372284C (en) |
DE (3) | DE60045452D1 (en) |
ES (2) | ES2262516T3 (en) |
MX (1) | MXPA01011547A (en) |
WO (3) | WO2000069963A1 (en) |
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EP1189986A1 (en) | 2002-03-27 |
AU4849000A (en) | 2000-12-05 |
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AU5007600A (en) | 2000-12-05 |
DE60029215D1 (en) | 2006-08-17 |
DE60028766T2 (en) | 2007-05-24 |
AU5017600A (en) | 2000-12-05 |
EP1705000B1 (en) | 2010-12-29 |
WO2000069965A1 (en) | 2000-11-23 |
EP1177255A1 (en) | 2002-02-06 |
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