CA2536292A1 - Improved resin compositions for extrusion coating - Google Patents

Improved resin compositions for extrusion coating Download PDF

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Publication number
CA2536292A1
CA2536292A1 CA002536292A CA2536292A CA2536292A1 CA 2536292 A1 CA2536292 A1 CA 2536292A1 CA 002536292 A CA002536292 A CA 002536292A CA 2536292 A CA2536292 A CA 2536292A CA 2536292 A1 CA2536292 A1 CA 2536292A1
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CA
Canada
Prior art keywords
composition
polymeric material
melt index
less
molecular weight
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.)
Granted
Application number
CA002536292A
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French (fr)
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CA2536292C (en
Inventor
Thomas T. Oswald
James L. Cooper
Jeffrey Weinhold
David T. Gillespie
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Dow Global Technologies LLC
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Individual
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Publication of CA2536292A1 publication Critical patent/CA2536292A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C09D123/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • 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 more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C09D123/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • C08L23/06—Polyethene

Abstract

A composition is disclosed which is particularly suited for use in extrusion coating. The composition comprises a polymeric material having a rheology such that the slope S of a natural log-natural log plot of loss modulus (or G") versus storage modulus (or G') is greater than [0.635*(melt index)+13.2]/[(melt index)+16.6], and wherein the polymeric material has a CDF RI
fraction less than 0.23 of a GPC chromatogram which has a molecular weight above 85,000 g/mol, and a CDF LS fraction of more than 0.07 at a conventional GPC molecular weight of 1,750,000 g/mol or greater. The compositions exhibit reduced neck-in when used in extrusion coating and the neck-in is independent of melt strength, thereby facilitating improved extrusion processes.

Claims (31)

1. A composition comprising a polymeric material having a rheology such that the slope (or S) determined by linear least squares regression, of a plot of the natural log of loss modulus (or G") versus natural log of storage modulus (or G') is greater than [0.635*(melt index)+13.2]/[(melt index)+16.6], and wherein the polymeric material has a CDF RI fraction less than 0.23 of a GPC chromatogram which has a molecular weight above 85,000 g/mol, and a CDF LS fraction of more than 0.07 at a conventional GPC
molecular weight of 1,750,000 g/mol or greater.
2. The composition of Claim 1 wherein the polymeric material has a melt strength less than about 5 cN.
3. The composition of Claim 1 wherein the polymeric material comprises LDPE.
4. The composition of Claim 1 wherein the polymeric material comprises a blend of at least two polymeric materials.
5. The composition of Claim 1 wherein the polymeric material comprises Linear PE.
6. The composition of Claim 3 wherein the LDPE comprises a high molecular weight highly branched component with an MWD greater than 10 and a Mw(absolute)/Mw(GPC) ratio greater than 3Ø
7. The composition of Claim 6 wherein the LDPE is made in an autoclave reactor with chilled ethylene feed below 35°C operating in single phase mode.
8. The composition of Claim 1 wherein the polymeric material has a melt index greater than 10 g/10min.
9. The composition of Claim 8 wherein the polymeric material has a melt index greater than about 13 g/10min.
10. The composition of Claim 8 wherein the polymeric material has a melt index less than about 100 g/10min.
11. The composition of Claim 1 wherein the polymeric material has a Mark-Houwink plot where the slope is less than 0.25 in the absolute molecular weight range between 300,000 and 3,000,000 g/mol.
12. The composition of Claim 1 wherein the value for S is at least 1%
greater than [0.635*(melt index)+13.2]/[(melt index)+16.6].
13. The composition of Claim 12 wherein the value for S is at least 2%
greater than [0.635*(melt index)+13.2]/[(melt index)+16.6].
14. The composition of Claim 1 wherein the polymeric material has a CDF RI fraction less than 0.21 of a GPC chromatogram which has a molecular weight above 85,000 g/mol.
15. The composition of Claim 1 wherein the polymeric material has a CDF RI fraction less than 0.20 of a GPC chromatogram which has a molecular weight above 85,000 g/mol.
16. The composition of Claim 1 wherein the polymer material has a CDF
LS fraction greater than 0.09 of a GPC chromatogram which has a molecular weight above 1,750,000 g/mol.
17. The use of a composition according to Claim 1 to make a cast film, profile extrusion, coated substrate, extrusion lamination or extrusion coated substrate.
18. In a process for extruding a polymeric material onto a substrate, the improvement comprising: using a polymeric material having a rheology such that the slope (or S) determined by linear least squares regression, of a natural log-natural log plot of loss modulus (or G") versus storage modulus (or G') is greater than [0.635*(melt index)+13.2]/[(melt index)+16.6].
19. The process of Claim 18 wherein the neck-in observed is less than 3 inches when running at a line speed of 440 ft/min.
20. The process of Claim 18 wherein the neck-in observed is less than 2.5 inches when running at a line speed of 440 ft/min.
21. The process of Claim 18 wherein the neck-in observed is less than 2 inches when running at a line speed of 440 ft/min.
22. The process of Claim 18 wherein the draw down is at least 1500 ft/min.
23. The process of Claim 18 wherein the polymeric material has a melt strength of less than 5 cN.
24. A polymeric film layer having a rheology such that the slope (or S) determined by linear least squares regression, of a natural log-natural log plot of loss modulus (or G") versus storage modulus (or G') is greater than [0.665*(melt index)+14.2]/[(melt index)+16.6], and wherein the polymeric material has a CDF
RI
fraction less than 0.23 of a GPC chromatogram which has a molecular weight above 85,000 g/mol, and a CDF LS fraction of more than 0.07 at a conventional GPC molecular weight of 1,750,000 g/mol or greater.
25. The film layer of claim 24 wherein the layer has a CDF LS fraction of more than 0.09 at a conventional GPC molecular weight of 1,750,000 g/mol or greater.
26. The film layer of Claim 24 in which the film layer was produced using an extrusion coating, extrusion lamination, or cast film process.
27. A composition of matter comprising:
a. from about 10 to about 25 percent by weight of the composition of a high pressure low density type polyethylene resin having a melt index (I2) less than about 2, a molecular weight distribution greater than about 10, a Mw(absolute)/Mw(GPC) ratio greater than about 3.0, and a melt strength greater than about 24.1 -18.0*log10(MI); and b. from about 90 to about 75 percent by weight of the composition, of a Linear PE
having a density in the range of 0.97-0.857 g/cc and a melt index (I2) in the range of 20-100 ;
wherein the MI of the composition of matter is greater than about 10 g/10 minutes.
28. The composition of Claim 27 in which component a) has a melt index (I2) less than about 1 g/10 minutes.
29. The composition of Claim 27 wherein the composition has a melt strength less than about 5 cN.
30. The composition of Claim 27 wherein the Mw(absolute)/Mw(GPC) ratio of component (a) is greater than 3.2.
31. The composition of Claim 27 wherein the Mw(absolute)/Mw(GPC) ratio of component (a) is greater than 3.5.
CA2536292A 2003-09-05 2004-09-03 Improved resin compositions for extrusion coating Active CA2536292C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US50058503P 2003-09-05 2003-09-05
US60/500,585 2003-09-05
PCT/US2004/029124 WO2005023912A2 (en) 2003-09-05 2004-09-03 Improved resin compositions for extrusion coating

Publications (2)

Publication Number Publication Date
CA2536292A1 true CA2536292A1 (en) 2005-03-17
CA2536292C CA2536292C (en) 2012-05-08

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CA2536292A Active CA2536292C (en) 2003-09-05 2004-09-03 Improved resin compositions for extrusion coating

Country Status (14)

Country Link
US (1) US7776987B2 (en)
EP (1) EP1664165B1 (en)
JP (2) JP5144932B2 (en)
KR (1) KR101136590B1 (en)
CN (1) CN1845952B (en)
AR (1) AR045592A1 (en)
AU (1) AU2004270723B2 (en)
BR (1) BRPI0413766B1 (en)
CA (1) CA2536292C (en)
MX (1) MXPA06002483A (en)
MY (1) MY145537A (en)
PL (1) PL1664165T3 (en)
TW (1) TWI356081B (en)
WO (1) WO2005023912A2 (en)

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Also Published As

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JP5144932B2 (en) 2013-02-13
JP2012233197A (en) 2012-11-29
EP1664165B1 (en) 2013-11-13
KR20060098363A (en) 2006-09-18
EP1664165A2 (en) 2006-06-07
AU2004270723B2 (en) 2010-08-05
BRPI0413766B1 (en) 2014-01-28
MY145537A (en) 2012-02-29
AU2004270723A1 (en) 2005-03-17
BRPI0413766A (en) 2006-10-31
AR045592A1 (en) 2005-11-02
KR101136590B1 (en) 2012-04-24
US20060281866A1 (en) 2006-12-14
WO2005023912A3 (en) 2005-08-11
US7776987B2 (en) 2010-08-17
WO2005023912A2 (en) 2005-03-17
TW200521188A (en) 2005-07-01
CA2536292C (en) 2012-05-08
JP2007504329A (en) 2007-03-01
TWI356081B (en) 2012-01-11
MXPA06002483A (en) 2006-06-20
PL1664165T3 (en) 2014-04-30
CN1845952B (en) 2010-10-13
CN1845952A (en) 2006-10-11

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