Patent US3846387A successfully refreshed from Google Patents.
US3846387A
Expired / Lapsed
US
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Chain saturated copolymers of ethylene, alpha monoolefins, and trienes containing side-chains with non-terminal conjugated unsaturation
Assignee: EIDP Inc
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Filing: 1972-03-29
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Granted: 1974-11-05
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Expires: 1992-03-29
Abstract
Abstract An elastomeric EPTM copolymer is provided which has an inherent viscosity of about 0.2-6.0, which will undergo a conventional Diels-Alder reaction with a dienophile, and which has a substantially saturated backbone chain with side-chains containing non-terminal conjugated double bonds. A method is also disclosed for preparing the EOTM copolymer using an aluminum/magnesium/titanium catalyst.
Inventors
- 👤 A Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:32
CPC Classifications
C; C08; C08F; C08F210/00; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2525; C07C5/2543; C07C5/255; C08L; C08L23/00; C08L23/02; C08L23/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
AN ELASTOMERIC COPOLYMER OF A. ETHYLENE B. AT LEAST ONE LOW MOLECULAR WEIGHT A-MONOLEFIN, AND C. AT LEAST ONE OF 1,4,6-OCTATRIENE AND 1,6,8-DECATRIENE, SAID COPOLYMER HAVING AN INHERENT VICOSITY OF ABOUT 0.2 TO 6.0 AND BEING CAPABLE OF UNDERGOING A DIELS-ALDER REACTION WITH A DIENOPHILE.
Claim 2
Dependent Claim
45 words
AN ELASTOMERIC COPOLYMER OF A. ETHYLENE B. AT LEAST ONE LOW MOLECULAR WEIGHT A-MONOLEFIN, AND C. AT LEAST ONE OF 1,4,6-OCTATRIENE AND 1,6,8-DECATRIENE, SAID COPOLYMER HAVING AN INHERENT VICOSITY OF ABOUT 0.2 TO 6.0 AND BEING CAPABLE OF UNDERGOING A DIELS-ALDER REACTION WITH A DIENOPHILE.
Claim 3
Dependent Claim
43 words
The copolymer of claim 1 wherein (b) is propylene and the polymeric units of ethylene and propylene are present in a weight ratio of 15-75 to 25-85, and the triene units are present in about 0.1 to 10 mole percent of the copolymer.
Claim 4
Dependent Claim
18 words
A moldable composition containing: a. the elastomeric EOTM copolymer of claim 1, and b. a bis-dienophile curing agent.
Claim 5
Dependent Claim
7 words
The cured elastomeric copolymer of claim 1.
Claim 6
Dependent Claim
83 words
A process for preparing a copolymer of claim 1 comprising contacting a. ethylene b. at least one low molecular weight Alpha -monolefin, and c. at least one of 1,4,6-octatriene and 1,6,8-decatriene in the presence of a solvent and a catalyst which consists essentially of (A) at least one organoaluminum compound, (B) at least one organomagnesium compound, and (C) at least one hydrocarbon-soluble titanium compound at a temperature of about -20* to 150*C. and allowing the monomers to polymerize to produce the desired copolymer.
Claim 7
Dependent Claim
42 words
The process of claim 5 wherein the atomic ratio of Al:Mg:Ti is about 1-100:1-5:1, and a. aluminum is present as an organoaluminum halide, and b. titanium is present as at least one of titanium tetrahalide, an organotitanium halide, and an organo titanate.
Claim 8
Dependent Claim
96 words
The process of claim 6 wherein: a. aluminum is present as at least one acyclic organoaluminum halide wherein the acyclic substituents independently contain 2 to 12 carbon atoms and the halide is chlorine or bromine; b. magneSium is present as at least one of an diaryl magnesium wherein the aryl substituents independently have 6 to 22 carbon atoms, and a dialkyl magnesium wherein the alkyl substituents independently have 2 to 20 carbon atoms; and c. titanium is present as at least one of titanium tetrahalide, a tetraalkyl titanate, an alkyl titanium halide, and titanium tris(acetyl acetonate).
Claim 9
Dependent Claim
22 words
The process of claim 7 wherein titanium is present in the amount of 0.1 to 10 millimoles per liter of reaction solution.
References Cited (Backward Citations)
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US3285889A
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US3418299A
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US3480599A
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |