US4113804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising polybutene EPDM and polyolefin
Assignee: Southern Chemicals Inc
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Filing: 1977-11-15
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Granted: 1978-09-12
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Expires: 1997-11-15
Abstract
Abstract Improved compositions containing polybutene-1 especially useful for forming articles such as extruded pipe and film comprise a base butene-1 polymer and thermoplastic elastomer comprising a substantially cured mixture of (1) interpolymer of ethylene, polyene and at least one monoolefin having at least 3 carbon atoms, (2) polyethylene and, preferably, (3) at least one polymer of monoolefin having at least 3 carbon atoms, e.g., polypropylene. The thermoplastic elastomer is present in the compositions in an amount sufficient to enhance the characteristics, such as extrusion or molding characteristics, of the compositions. Also disclosed are adhesives and extrusible and moldable materials embodying the compositions of this invention, and processes for forming the compositions into shaped articles which are solvent weldable to other articles such as pipe or film containing the compositions of this invention.
Inventors
- 👤 Roger C. Cotten
- 👤 David W. Young
- 👤 Aram Y. Kandanian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:21
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
66 words
A composition of matter comprising polybutene-1 as base polymer and an amount sufficient to enhance the working or adhesive characteristics of the composition of a crosslinked, thermoplastic elastomer comprising an EPDM interpolymer elastomer of ethylene, polyene and monoolefin having 3 to about 16 carbon atoms; and a minor amount of polyethylene; with or without normally solid polymer of monoolefin having 3 to about 16 carbon atoms.
Claim 2
Dependent Claim
66 words
A composition of matter comprising polybutene-1 as base polymer and an amount sufficient to enhance the working or adhesive characteristics of the composition of a crosslinked, thermoplastic elastomer comprising an EPDM interpolymer elastomer of ethylene, polyene and monoolefin having 3 to about 16 carbon atoms; and a minor amount of polyethylene; with or without normally solid polymer of monoolefin having 3 to about 16 carbon atoms.
Claim 3
Dependent Claim
72 words
A composition of claim 1 wherein normally solid polymer of monoolefin of 3 to about 16 carbon atoms is present in the composition which is cross-linked to provide said thermoplastic elastomer, and wherein the ratio of polymer of monoolefin of 3 to about 16 carbon atoms to interpolymer is about 10 to 90 parts by weight of the interpolymer to about 90 to 10 parts by weight of the polymer of monoolefin.
Claim 4
Dependent Claim
14 words
A composition of claim 2 wherein said normally solid polymer of monoolefin comprises polypropylene.
Claim 5
Dependent Claim
19 words
A composition of claim 3 wherein the thermoplastic elastomer comprises about 1 to 30 weight percent of the composition.
Claim 6
Dependent Claim
11 words
A composition of claim 3 wherein said polypropylene comprises crystalline polypropylene.
Claim 7
Dependent Claim
19 words
A composition of claim 1 wherein said cross-linking is conducted by free radical reaction during working at elevated temperature.
Claim 8
Dependent Claim
86 words
A composition of matter comprising about 50 to 99% polybutylene-1 as base polymer and about 1 to 50% of a freeradical, cross-linked, thermoplastic elastomer comprising an EPDM interpolymer elastomer of ethylene, polyene and propylene, and about 4 to 15% of polyethylene, and polypropylene, wherein the ratio of polypropylene to interpolymer is about 10 to 90 parts by weight of the interpolymer to about 90 to 10 parts by weight of polypropylene, and wherein said cross-linked product is formed during working of the composition at elevated temperature.
Claim 9
Dependent Claim
86 words
A composition of matter comprising about 50 to 99% polybutylene-1 as base polymer and about 1 to 50% of a freeradical, cross-linked, thermoplastic elastomer comprising an EPDM interpolymer elastomer of ethylene, polyene and propylene, and about 4 to 15% of polyethylene, and polypropylene, wherein the ratio of polypropylene to interpolymer is about 10 to 90 parts by weight of the interpolymer to about 90 to 10 parts by weight of polypropylene, and wherein said cross-linked product is formed during working of the composition at elevated temperature.
Claim 10
Dependent Claim
17 words
A composition of claim 7 wnerein said polyene is diene of about 6 to 20 carbon atoms.
Claim 11
Dependent Claim
13 words
A composition of claim 8 wherein said polymer of monoolefin comprises crystalline polypropylene.
Claim 12
Dependent Claim
32 words
A composition of claim 9 wherein the ratio of polypropylene to interpolymer is about 15 to 40 parts by weight of polypropylene and about 60 to 85 parts by weight of interpolymer.
Claim 13
Dependent Claim
19 words
A composition of claim 10 wherein the thermoplastic elastomer comprises about 1 to 30 weight percent of the composition.
Claim 14
Dependent Claim
10 words
A plastic pipe comprised of a composition of claim 1.
Claim 15
Dependent Claim
10 words
A plastic pipe comprised of a composition of claim 2.
Claim 16
Dependent Claim
10 words
A plastic pipe comprised of a composition of claim 10.
Claim 17
Dependent Claim
9 words
A film comprised of a composition of claim 1.
Claim 18
Dependent Claim
9 words
A film comprised of a composition of claim 2.
Claim 19
Dependent Claim
9 words
A film comprised of a composition of claim 10.
Claim 20
Dependent Claim
18 words
An adhesive composition comprised of a minor amount of a composition of claim 1, and solvent or plasticizer.
Claim 21
Dependent Claim
18 words
An adhesive composition comprised of a minor amount of a composition of claim 2, and solvent or plasticizer.
Claim 22
Dependent Claim
18 words
An adhesive composition comprised of a minor amount of a composition of claim 10, and solvent or plasticizer.
Claim 23
Dependent Claim
27 words
A composition comprising a finely-divided composition of claim 1, and a small, effective amount of solvent sufficient to form said composition into putty-like consistency suitable for molding.
Claim 24
Dependent Claim
27 words
A composition comprising a finely-divided composition of claim 2, and a small, effective amount of solvent sufficient to form said composition into putty-like consistency suitable for molding.
Claim 25
Dependent Claim
27 words
A composition comprising a finely-divided composition of claim 10, and a small, effective amount of solvent sufficient to form said composition into putty-like consistency suitable for molding.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |