US4200722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber-like copolymers of ethylene, at least one other α-alkene and one or more polyenes possessing increased building tack
Assignee: Stamicarbon BV
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Filing: 1976-11-19
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Granted: 1980-04-29
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Expires: 1996-11-19
Abstract
Abstract Novel, rubbery copolymers of ethylene with at least one other alpha -alkene such as propylene, and a polyene such as 5-ethylidene norbornene-2, characterized by a differential scanning calorimetry thermogram maximum peak at a temperature between -7 DEG and +11 DEG C., are disclosed. These specific rubbery copolymers when one or more tackifiers are included therein, exhibit an unprecedentedly high tack and consequently provide for the first time EPDM-type compositions that have sufficient building tack for the manufacture of multi-ply articles such as tires.
Inventors
- 👤 Albertus J. Pennings
- 👤 Arnold Vossebeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:52
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08F210/18; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08L; C08L23/00; C08L23/02; C08L23/16; C08L91/00; C08L2312/00; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
A rubbery copolymer of 20 to 75 percent by weight of ethylene, about 24 to about 79 percent by weight of at least one other α-alkene having from 3 to 8 carbon atoms, and from about 0.1 to 10 percent by weight of one or more dienes, the total of said monomers amounting to 100 percent by weight, said rubbery copolymer having a thermogram recorded by differential scanning calorimetry (d.s.c.) at a cooling rate of 8° C. per minute and showing the heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between -7° and +11° C.
Claim 2
Dependent Claim
106 words
A rubbery copolymer of 20 to 75 percent by weight of ethylene, about 24 to about 79 percent by weight of at least one other α-alkene having from 3 to 8 carbon atoms, and from about 0.1 to 10 percent by weight of one or more dienes, the total of said monomers amounting to 100 percent by weight, said rubbery copolymer having a thermogram recorded by differential scanning calorimetry (d.s.c.) at a cooling rate of 8° C. per minute and showing the heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between -7° and +11° C.
Claim 3
Dependent Claim
22 words
The rubbery copolymer of claim 1 having a peak which passes through a maximum at a temperature between -3° and +8° C.
Claim 4
Dependent Claim
22 words
The rubbery copolymer of claim 1 having a peak which passes through a maximum at a temperature between 0° and 6° C.
Claim 5
Dependent Claim
15 words
The rubbery copolymer of claim 1 wherein said α-alkene is propylene, butylene-1 or mixtures thereof.
Claim 6
Dependent Claim
13 words
The rubbery copolymer of claim 1 wherein said diene present consists of 5-ethylidenenorbornene-2.
Claim 7
Dependent Claim
92 words
A rubbery copolymer of 20 to 75 percent by weight of ethylene, about 24 to about 79 percent by weight of propylene, and from about 0.1 to 10 percent by weight of 5-ethylidenenorbornene-2, the total of said monomers amounting to 100 percent by weight, said rubbery copolymer having a thermogram recorded by differential scanning calorimetry (d.s.c.) at a cooling rate of 8° C. per minute and showing the heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between -7° and +11° C.
Claim 8
Dependent Claim
92 words
A rubbery copolymer of 20 to 75 percent by weight of ethylene, about 24 to about 79 percent by weight of propylene, and from about 0.1 to 10 percent by weight of 5-ethylidenenorbornene-2, the total of said monomers amounting to 100 percent by weight, said rubbery copolymer having a thermogram recorded by differential scanning calorimetry (d.s.c.) at a cooling rate of 8° C. per minute and showing the heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between -7° and +11° C.
Claim 9
Dependent Claim
22 words
The rubbery copolymer of claim 6 having a peak which passes through a maximum at a temperature between -3° and +8° C.
Claim 10
Dependent Claim
22 words
The rubbery copolymer of claim 6 having a peak which passes through a maximum at a temperature between 0° and 6° C.
Claim 11
Dependent Claim
113 words
A rubbery copolymer of 20 to 75 percent by weight of ethylene, about 24 to about 79 percent by weight of propylene, and from about 0.1 to 10 percent by weight of 5-ethylidenenorbornene-2, the total of said monomers amounting to 100 percent by weight, said rubbery copolymer having a thermogram recorded by differential scanning calorimetry (d.s.c.) at a cooling rate of 8° C. per minute and showing the heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between -7° and +11° C., and characterized by ethylene sequences of from about 7 to about 9 carbon atoms in the backbone of said rubbery copolymer.
Claim 12
Dependent Claim
113 words
A rubbery copolymer of 20 to 75 percent by weight of ethylene, about 24 to about 79 percent by weight of propylene, and from about 0.1 to 10 percent by weight of 5-ethylidenenorbornene-2, the total of said monomers amounting to 100 percent by weight, said rubbery copolymer having a thermogram recorded by differential scanning calorimetry (d.s.c.) at a cooling rate of 8° C. per minute and showing the heat of crystallization as a function of temperature having a peak which passes through a maximum at a temperature between -7° and +11° C., and characterized by ethylene sequences of from about 7 to about 9 carbon atoms in the backbone of said rubbery copolymer.
Claim 13
Dependent Claim
22 words
The rubbery copolymer of claim 9 having a peak which passes through a maximum at a temperature between -3° and +8° C.
Claim 14
Dependent Claim
22 words
The rubbery copolymer of claim 9 having a peak which passes through a maximum at a temperature between 0° and 6° C.
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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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |