Patent US4298722A successfully refreshed from Google Patents.
US4298722A
Expired / Lapsed
US
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Fractionable, elastomeric poly (1-butene)
Assignee: EIDP Inc
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Filing: 1980-03-11
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Granted: 1981-11-03
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Expires: 2000-03-11
Abstract
Abstract A fractionable, elastomeric polymer of 1-butene consisting essentially of 30% to 80%, by weight, of an ether-soluble fraction having an intrinsic viscosity exceeding 1.5 and an infrared crystallinity value of about 1% to 15%; and 20% to 70%, by weight, of an ether-insoluble fraction having an infrared crystallinity value of about 20% to 55%; said polymer having an nmr isotacticity of about 20% to 50% and an intrinsic viscosity exceeding 1.5; elastomeric copolymers of 1-butene; polymer blends containing said elastomeric polymers; and a catalytic process for making said elastomeric polymers.
Inventors
- 👤 John W. Collette
- 👤 Charles W. Tullock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:41
CPC Classifications
C; C08; C08F; C08F110/00; C08F110/04; C08F110/08; C08F10/00; C08F10/04; C08F10/08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
A fractionable, elastomeric, whole-polymer poly( 1-butene) consisting essentially of (i) 30% to 80%, by weight, of an ether-soluble fraction having an intrinsic viscosity exceeding 1.5 and an infrared crystallinity value of about 1% to 15%; and (ii) 20% to 70%, by weight, of an ether-insoluble fraction having an infrared crystallinity value of about 20% to 55%; said polymer further characterized by (a) intrinsic viscosity exceeding 1.5, (b) nmr isotacticity of 20% to 50%, (c) tensile set not exceeding 150%, and (d) tensile stress, M 100 , above 10.
Claim 2
Dependent Claim
88 words
A fractionable, elastomeric, whole-polymer poly( 1-butene) consisting essentially of (i) 30% to 80%, by weight, of an ether-soluble fraction having an intrinsic viscosity exceeding 1.5 and an infrared crystallinity value of about 1% to 15%; and (ii) 20% to 70%, by weight, of an ether-insoluble fraction having an infrared crystallinity value of about 20% to 55%; said polymer further characterized by (a) intrinsic viscosity exceeding 1.5, (b) nmr isotacticity of 20% to 50%, (c) tensile set not exceeding 150%, and (d) tensile stress, M 100 , above 10.
Claim 3
Dependent Claim
14 words
A poly(1-butene) according to claim 1, wherein the ether-soluble fraction is 40% to 70%.
Claim 4
Dependent Claim
13 words
A poly(1-butene) according to claim 1, wherein the intrinsic viscosity is above 2.
Claim 5
Dependent Claim
14 words
A poly(1-butene) according to claim 1, wherein the tensile set does not exceed 100%.
Claim 6
Dependent Claim
25 words
A poly(1-butene) according to claim 1, wherein the overall crystalline content is between 15% to 40% and the isotactic content is between 35% to 40%.
Claim 7
Dependent Claim
82 words
A fractionable copolymer comprising at least about 90 mole percent of units derived from 1-butene and up to about 10 mole percent of units derived from at least one alpha-olefin selected from the group ethylene, propylene, 1-pentene, and 1-hexene, said copolymer consisting essentially of 30% to 80%, by weight, of an ether-soluble fraction having an intrinsic viscosity exceeding 1.5, the balance being an ether-insoluble fraction, said polymer further characterized by an intrinsic viscosity exceeding 1.5, and a tensile set not exceeding 150%.
Claim 8
Dependent Claim
82 words
A fractionable copolymer comprising at least about 90 mole percent of units derived from 1-butene and up to about 10 mole percent of units derived from at least one alpha-olefin selected from the group ethylene, propylene, 1-pentene, and 1-hexene, said copolymer consisting essentially of 30% to 80%, by weight, of an ether-soluble fraction having an intrinsic viscosity exceeding 1.5, the balance being an ether-insoluble fraction, said polymer further characterized by an intrinsic viscosity exceeding 1.5, and a tensile set not exceeding 150%.
Claim 9
Dependent Claim
11 words
A copolymer according to claim 6 wherein the alpha-olefin is propylene.
Claim 10
Dependent Claim
11 words
A copolymer according to claim 6 wherein the alpha-olefin is ethylene.
References Cited (Backward Citations)
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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) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |