US5272236A
Expired / Lapsed
US
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Elastic substantially linear olefin polymers
Assignee: Dow Chemical Co
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Filing: 1991-10-15
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Granted: 1993-12-21
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Expires: 2011-10-15
Abstract
Abstract Substantially linear olefin polymers having a melt flow ratio, I 10 /I 2 , ≧5.63, a molecular weight distribution, M w /M n , defined by the equation: M w /M n ≦(I 10 /I 2 )-4.63, and a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 and their method of manufacture are disclosed. The substantially linear olefin polymers preferably have at least about 0.01 long chain branches/1000 carbons and a molecular weight distribution from about 1.5 to about 2.5. The new polymers have improved processability over conventional olefin polymers and are useful in producing fabricated articles such as fibers, films, and molded parts.
Inventors
- 👤 Shih-Yaw Lai
- 👤 John R. Wilson
- 👤 George W. Knight
- 👤 James C. Stevens
- 👤 Pak-Wing S. Chum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:01
CPC Classifications
C; C08; C08G; C08G83/00; C08G83/002; C08G83/003; B; B29; B29C; B29C48/00; B29C48/022; B29C48/15; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/306; B32B27/308; B32B27/32; B32B27/322; C08F; C08F10/00; C08F10/02; C08F210/00; C08F210/16; C08J; C08J5/00; C08J5/18; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L23/16; B29C48/03; B29C48/09; B29C48/10; B29C65/00; B29C65/82; B29C65/8207; B29C65/8223; B29C66/00; B29C66/70; B29C66/71; B29K; B29K2995/00; B29K2995/0018; B29K2995/0022; B32B2250/00; B32B2250/03; B32B2250/24; B32B2250/246; B32B2270/00; B32B2307/00; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7244; B32B2439/00; B32B2439/70; C08F110/00; C08F110/02; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65908; C08J2303/00; C08J2303/04; C08J2303/08; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/08; C08L2205/00; C08L2205/02; C08L23/06; C08L2314/00; C08L2314/06; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
77 words
A substantially linear olefin polymer characterized as having: a) a melt flow ratio, I 10 /I 2 , ≧5.63, b) a molecular weight distribution, M w /M n , defined by the equation: M.sub.w /M.sub.n ≦(I.sub.10 /I.sub.2)-4.63, and c) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , wherein the olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 2
Dependent Claim
77 words
A substantially linear olefin polymer characterized as having: a) a melt flow ratio, I 10 /I 2 , ≧5.63, b) a molecular weight distribution, M w /M n , defined by the equation: M.sub.w /M.sub.n ≦(I.sub.10 /I.sub.2)-4.63, and c) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , wherein the olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 3
Dependent Claim
16 words
The polymer of claim 1 wherein the M w /M n is less than about 3.5.
Claim 4
Dependent Claim
18 words
The polymer of claim 1 wherein the M w /M n is from about 1.5 to about 2.5.
Claim 5
Dependent Claim
22 words
The polymer of claim 1 wherein the polymer has about 0.01 to about 3 long chain branches/1000 carbons along the polymer backbone.
Claim 6
Dependent Claim
18 words
The polymer of claim 4 having at least about 0.1 long chain branches/1000 carbons along the polymer backbone.
Claim 7
Dependent Claim
18 words
The polymer of claim 4 having at least about 0.3 long chain branches/1000 carbons along the polymer backbone.
Claim 8
Dependent Claim
95 words
A composition comprising a substantially linear olefin polymer, wherein the polymer is characterized as having: a) a melt flow ratio, I 10 /I 2 , ≧5.63, b) a molecular weight distribution, M w /M n , defined by the equation: M.sub.w /M.sub.n ≦(I.sub.10 /I.sub.2)-4.63, and c) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , and at least one other natural or synthetic polymer, wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 9
Dependent Claim
95 words
A composition comprising a substantially linear olefin polymer, wherein the polymer is characterized as having: a) a melt flow ratio, I 10 /I 2 , ≧5.63, b) a molecular weight distribution, M w /M n , defined by the equation: M.sub.w /M.sub.n ≦(I.sub.10 /I.sub.2)-4.63, and c) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , and at least one other natural or synthetic polymer, wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 10
Dependent Claim
21 words
The composition of claim 7 wherein the substantially linear olefin polymer has a I 10 /I 2 up to about 20.
Claim 11
Dependent Claim
21 words
The composition of claim 7 wherein the substantially linear olefin polymer has a M w /M n less than about 3.5.
Claim 12
Dependent Claim
23 words
The composition of claim 7 wherein the substantially linear olefin polymer has a M w /M n from about 1.5 to about 2.5.
Claim 13
Dependent Claim
16 words
The composition of claim 7 wherein the synthetic polymer is a conventional ethylene homopolymer or copolymer.
Claim 14
Dependent Claim
186 words
A substantially linear olefin polymer having a melt flow ratio, I 10 /I 2 , ≦5.63, and a molecular weight distribution, M w /M n , defined by the equation: M.sub.w /M.sub.n ≦(I.sub.10 /I.sub.2)-4.63, produced by continuously contacting ethylene and a C 3 -C 20 alpha-olefin with a catalyst composition under polymerization conditions, wherein said catalyst composition is characterized as: a) a metal coordination complex comprising a metal atom of groups 3-10 or the Lanthanide series of the Periodic Table of the Elements and a delocalized π-bonded moiety substituted with a constrain inducing moiety, said complex having a constrained geometry about the metal atom such that the angle at the metal atom between the centroid of the delocalized, substituted π-bonded moiety and the center of at least one remaining substituent is less than such angle in a similar complex containing a similar π-bonded moiety lacking in such constrain-inducing substituent, and provided further that for such complexes comprising more than one delocalized, substituted π-bonded moiety, only one thereof for each metal atom of the complex is a cyclic, delocalized, substituted π-bonded moiety, and b) an activating cocatalyst.
Claim 15
Dependent Claim
186 words
A substantially linear olefin polymer having a melt flow ratio, I 10 /I 2 , ≦5.63, and a molecular weight distribution, M w /M n , defined by the equation: M.sub.w /M.sub.n ≦(I.sub.10 /I.sub.2)-4.63, produced by continuously contacting ethylene and a C 3 -C 20 alpha-olefin with a catalyst composition under polymerization conditions, wherein said catalyst composition is characterized as: a) a metal coordination complex comprising a metal atom of groups 3-10 or the Lanthanide series of the Periodic Table of the Elements and a delocalized π-bonded moiety substituted with a constrain inducing moiety, said complex having a constrained geometry about the metal atom such that the angle at the metal atom between the centroid of the delocalized, substituted π-bonded moiety and the center of at least one remaining substituent is less than such angle in a similar complex containing a similar π-bonded moiety lacking in such constrain-inducing substituent, and provided further that for such complexes comprising more than one delocalized, substituted π-bonded moiety, only one thereof for each metal atom of the complex is a cyclic, delocalized, substituted π-bonded moiety, and b) an activating cocatalyst.
Claim 16
Dependent Claim
57 words
A substantially linear olefin polymer characterized as having: a) a melt flow ratio, I 10 /I 2 , ≧7, b) a molecular weight distribution, M w /M n , of from about 1.5 to about 2.5, wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 17
Dependent Claim
57 words
A substantially linear olefin polymer characterized as having: a) a melt flow ratio, I 10 /I 2 , ≧7, b) a molecular weight distribution, M w /M n , of from about 1.5 to about 2.5, wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 18
Dependent Claim
16 words
The polymer of claim 13 wherein the I 10 /I 2 is at least about 8.
Claim 19
Dependent Claim
16 words
The polymer of claim 13 wherein the I 10 /I 2 is at least about 9.
Claim 20
Dependent Claim
15 words
The polymer of claim 13 wherein the substantially linear olefin polymer is an ethylene/alpha-olefin copolymer.
Claim 21
Dependent Claim
63 words
A substantially linear olefin polymer having: (a) from about 0.01 to about 3 long chain branches/1000 carbons along the polymer backbone and (b) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 22
Dependent Claim
63 words
A substantially linear olefin polymer having: (a) from about 0.01 to about 3 long chain branches/1000 carbons along the polymer backbone and (b) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 23
Dependent Claim
18 words
The polymer of claim 17 having at least about 0.1 long chain branches/1000 carbons along the polymer backbone.
Claim 24
Dependent Claim
18 words
The polymer of claim 17 having at least about 0.3 long chain branches/1000 carbons along the polymer backbone.
Claim 25
Dependent Claim
19 words
The polymer of claim 17 wherein the polymer has a I 10 /I 2 of at least about 16.
Claim 26
Dependent Claim
18 words
The substantially linear olefin polymer of claim 1, wherein the polymer is a copolymer of ethylene and 1-octene.
Claim 27
Dependent Claim
18 words
The substantially linear olefin polymer of claim 1, wherein the polymer is a copolymer of ethylene and 1-hexene.
Claim 28
Dependent Claim
18 words
The substantially linear olefin polymer of claim 1, wherein the polymer is a copolymer of ethylene and 1-butene.
Claim 29
Dependent Claim
18 words
The substantially linear olefin polymer of claim 1, wherein the polymer is a copolymer of ethylene and 4-methyl-1-pentene.
Claim 30
Dependent Claim
18 words
The composition of claim 7, wherein the substantially linear olefin polymer is a copolymer of ethylene and 1-octene.
Claim 31
Dependent Claim
18 words
The composition of claim 7, wherein the substantially linear olefin polymer is a copolymer of ethylene and 1-hexene.
Claim 32
Dependent Claim
18 words
The composition of claim 7, wherein the substantially linear olefin polymer is a copolymer of ethylene and 1-butene.
Claim 33
Dependent Claim
18 words
The composition of claim 7, wherein the substantially linear olefin polymer is a copolymer of ethylene and 4-methyl-1-pentene.
Claim 34
Dependent Claim
18 words
The substantially linear olefin polymer of claim 13, wherein the polymer is a copolymer of ethylene and 1-octene.
Claim 35
Dependent Claim
18 words
The substantially linear olefin polymer of claim 13, wherein the polymer is a copolymer of ethylene and 1-hexene.
Claim 36
Dependent Claim
18 words
The substantially linear olefin polymer of claim 13, wherein the polymer is a copolymer of ethylene and 1-butene.
Claim 37
Dependent Claim
18 words
The substantially linear olefin polymer of claim 13, wherein the polymer is a copolymer of ethylene and 4-methyl-1-pentene.
Claim 38
Dependent Claim
18 words
The substantially linear olefin polymer of claim 17, wherein the polymer is a copolymer of ethylene and 1-octene.
Claim 39
Dependent Claim
18 words
The substantially linear olefin polymer of claim 17, wherein the polymer is a copolymer of ethylene and 1-hexene.
Claim 40
Dependent Claim
18 words
The substantially linear olefin polymer of claim 17, wherein the polymer is a copolymer of ethylene and 1-butene.
Claim 41
Dependent Claim
18 words
The substantially linear olefin polymer of claim 17, wherein the polymer is a copolymer of ethylene and 4-methyl-1-pentene.
Claim 42
Dependent Claim
86 words
A composition comprising: (i) a substantially linear olefin polymer, wherein the substantially linear olefin polymer is characterized as having: a) from about 0.01 to about 3 long chain branches/1000 carbons along the polymer backbone and b) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , and (ii) at least one other natural or synthetic polymer, wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 43
Dependent Claim
86 words
A composition comprising: (i) a substantially linear olefin polymer, wherein the substantially linear olefin polymer is characterized as having: a) from about 0.01 to about 3 long chain branches/1000 carbons along the polymer backbone and b) a critical shear stress at onset of gross melt fracture of greater than about 4×10 6 dyne/cm 2 , and (ii) at least one other natural or synthetic polymer, wherein the substantially linear olefin polymer is further characterized as a copolymer of ethylene with a C 3 -C 20 alpha-olefin.
Claim 44
Dependent Claim
91 words
The substantially linear olefin polymer of claim 12 wherein (a) is an amidosilane- or amidoalkanediyl- compound corresponding to the formula: ##STR8## wherein: M is titanium, zirconium or hafnium, bound in an η 5 bonding mode to the cyclopentadienyl group; R' each occurrence is independently selected from the group consisting of hydrogen, silyl, alkyl, aryl and combinations thereof having up to 10 carbon or silicon atoms; E is silicon or carbon; X independently each occurrence is hydride, halo, alkyl, or aryl, of up to 20 carbons; and m is 1 or 2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-12-20 | 1997-06-21 | 1997-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-20 | 2001-06-21 | 2001-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-20 | 2005-06-21 | 2005-12-21 | $7700.00 | Window Closed / Lapsed |