US4960820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions and articles using high melt flow poly-1-butene and polypropylene blends
Assignee: Shell USA Inc
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Filing: 1989-02-27
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Granted: 1990-10-02
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Expires: 2009-02-27
Abstract
Abstract A composition comprising a blend of no more than about 10% by weight of a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000, and at least about 90% by weight of a propylene polymer, including articles and fibers prepared therefrom.
Inventors
- 👤 Charles C. Hwo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:05
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
78 words
A composition comprising a blend of a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000, said poly-1- butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer, and at least of a propylene polymer. 90% by weight of a propylene polymer and an intrinsic viscosity of less than about 0.11.
Claim 2
Dependent Claim
78 words
A composition comprising a blend of a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000, said poly-1- butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer, and at least of a propylene polymer. 90% by weight of a propylene polymer and an intrinsic viscosity of less than about 0.11.
Claim 3
Dependent Claim
17 words
The composition of claim 1, further comprising about 0.1 to about 1% by weight of an additive.
Claim 4
Dependent Claim
35 words
The composition of claim 2, wherein said additive is selected from the group comprising: mold release agents, U.V. stabilizers, thermal stabilizers, fillers, slip agents, antiblock agents, nucleating agents, pigments, antioxidants, flame retardants and mixtures thereof.
Claim 5
Dependent Claim
22 words
The composition of claim 1, wherein said poly-1-butene polymer has a melt index in the range of about 150 to about 225.
Claim 6
Dependent Claim
33 words
The composition of claim 1, wherein said poly-1-butene polymer is selected from the group comprising: butene-1 homopolymers, and butene-1 copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 7
Dependent Claim
34 words
The composition of claim 1, wherein said propylene polymer is a member of the group comprising: propylene homopolymers, and propylene copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 8
Dependent Claim
21 words
The composition of claim 1 comprising 95% by weight of said propylene polymer and 5% by weight of said poly-1-butene polymer.
Claim 9
Dependent Claim
75 words
A molded article prepared from a composition comprising: low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000 , said poly-1-butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer, and at least 90% by weight of a propylene polymer and an intrinsic viscosity of less than about 0.11.
Claim 10
Dependent Claim
75 words
A molded article prepared from a composition comprising: low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000 , said poly-1-butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer, and at least 90% by weight of a propylene polymer and an intrinsic viscosity of less than about 0.11.
Claim 11
Dependent Claim
18 words
The molded article of claim 8, further comprising about 0.1 to about 1% by weight of an additive.
Claim 12
Dependent Claim
36 words
The molded article of claim 9, wherein said additive is selected from the group comprising: mold release agents, U.V. stabilizers, thermal stabilizers, fillers, slip agents, antiblock agents, nucleating agents, pigments, antioxidants, flame retardants and mixtures thereof.
Claim 13
Dependent Claim
23 words
The molded article of claim 8, wherein said poly-1-butene polymer has a melt index in the range of about 150 to about 225.
Claim 14
Dependent Claim
34 words
The molded article of claim 8 wherein said poly-1-butene polymer is selected from the group comprising: butene-1 homopolymers, and butene-1 copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 15
Dependent Claim
35 words
The molded article of claim 8, wherein said propylene polymer is a member of the group comprising: propylene homopolymers, and propylene copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 16
Dependent Claim
22 words
The molded article of claim 8 comprising 95% by weight of said propylene polymer and 5% by weight of said poly-1-butene polymer.
Claim 17
Dependent Claim
76 words
A blow molded article prepared from a blend comprising a low molecular weight, isotactic poly-1butene polymer with a melt index in the range of greater than 100 to about 1000, said poly-1-butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer, and at least 90% by weight of a propylene polymer and an intrinsic viscosity of less than about 0.11.
Claim 18
Dependent Claim
76 words
A blow molded article prepared from a blend comprising a low molecular weight, isotactic poly-1butene polymer with a melt index in the range of greater than 100 to about 1000, said poly-1-butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer, and at least 90% by weight of a propylene polymer and an intrinsic viscosity of less than about 0.11.
Claim 19
Dependent Claim
22 words
The blow molded article of claim 15, wherein said blend further comprises about 0.1 to about 1% by weight of an additive.
Claim 20
Dependent Claim
37 words
The blow molded article of claim 16, wherein said additive is selected from the group comprising: mold release agents, U.V. stabilizers, thermal stabilizers, fillers, slip agents, antiblock agents, nucleating agents, pigments, antioxidants, flame retardants and mixtures thereof.
Claim 21
Dependent Claim
27 words
The blow molded article of claim 15, wherein said poly-1-butene polymer of said blend has a melt index in the range of about 150 to about 225.
Claim 22
Dependent Claim
38 words
The blow molded article of claim 15, wherein said poly-1-butene polymer of said blend is selected from the group comprising: butene-1 homopolymers, and butene-1 copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 23
Dependent Claim
39 words
The blow molded article of claim 15, wherein said propylene polymer of said blend is a member of the group comprising: propylene homopolymers, and propylene copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 24
Dependent Claim
26 words
The blow molded article of claim 15, wherein said blend comprises 95% by weight of said propylene polymer and 5% by weight of said poly-1-butene polymer.
Claim 25
Dependent Claim
54 words
A fiber prepared from a blend comprising no more than 10% by weight of a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000 and an intrinsic viscosity of less than about 0.11, and at least 90% by weight of a propylene polymer.
Claim 26
Dependent Claim
54 words
A fiber prepared from a blend comprising no more than 10% by weight of a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000 and an intrinsic viscosity of less than about 0.11, and at least 90% by weight of a propylene polymer.
Claim 27
Dependent Claim
20 words
The fiber of claim 22, wherein said blend further comprises about 0.1 to about 1% by weight of an additive.
Claim 28
Dependent Claim
35 words
The fiber of claim 23, wherein said additive is selected from the group comprising: mold release agents, U.V. stabilizers, thermal stabilizers, fillers, slip agents, antiblock agents, nucleating agents, pigments, antioxidants, flame retardants and mixtures thereof.
Claim 29
Dependent Claim
25 words
The fiber of claim 22, wherein said poly-1-butene polymer of said blend has a melt index in the range of about 150 to about 225.
Claim 30
Dependent Claim
36 words
The fiber of claim 22, wherein said poly-1-butene polymer of said blend is selected from the group comprising: butene-1 homopolymers, and butene-1 copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 31
Dependent Claim
37 words
The fiber of claim 22, wherein said propylene polymer of said blend is a member of the group comprising: propylene homopolymers, and propylene copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 32
Dependent Claim
24 words
The fiber of claim 22, wherein said blend comprises 95% by weight of said propylene polymer and 5% by weight of said poly-1-butene polymer.
Claim 33
Dependent Claim
77 words
A film or sheet prepared from a blend comprising a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000, and an intrinsic viscosity of less than about 0.11, and at least 90% by weight of a propylene polymer, said poly-1- butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer.
Claim 34
Dependent Claim
77 words
A film or sheet prepared from a blend comprising a low molecular weight, isotactic poly-1-butene polymer with a melt index in the range of greater than 100 to about 1000, and an intrinsic viscosity of less than about 0.11, and at least 90% by weight of a propylene polymer, said poly-1- butene polymer amounting to less than 10% by weight, but being present in an amount sufficient to improve the gloss and clarity of the propylene polymer.
Claim 35
Dependent Claim
22 words
The film or sheet of claim 29, wherein said blend further comprises about 0.1 to about 1% by weight of an additive.
Claim 36
Dependent Claim
37 words
The film or sheet of claim 30, wherein said additive is selected from the group comprising.. mold release agents, U.V. stabilizers, thermal stabilizers, fillers, slip agents, antiblock agents, nucleating agents, pigments, antioxidants, flame retardants and mixtures thereof.
Claim 37
Dependent Claim
27 words
The film or sheet of claim 29, wherein said poly-1-butene polymer of said blend has a melt index in the range of about 150 to about 225.
Claim 38
Dependent Claim
38 words
The film or sheet of claim 29, wherein said poly-1-butene polymer of said blend is selected from the group comprising: butene-1 homopolymers, and butene-1 copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 39
Dependent Claim
39 words
The film or sheet of claim 29, wherein said propylene polymer of said blend is a member of the group comprising: propylene homopolymers, and propylene copolymers having 1-30 mole % of an alpha olefin having from 2-8 carbon atoms.
Claim 40
Dependent Claim
26 words
The film or sheet of claim 29, wherein said blend comprises 95% by weight of said propylene polymer and 5% by weight of said poly-1-butene polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |