Patent US4136249A successfully refreshed from Google Patents.
US4136249A
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Ring-opened copolymers of dihydrodiclopentadiene, norbornene or alkylnorbornene, and acyclic olefin
Assignee: Goodrich Corp
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Filing: 1977-12-05
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Granted: 1979-01-23
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Expires: 1997-12-05
Abstract
Abstract 1,2-Dihydrodicyclopentadiene is copolymerized by ring opening with (1) norbornene, at least one alkylnorbornene or a mixture thereof and (2) at least one acyclic monoolefin or nonconjugated acyclic olefin. The copolymers can be calendered and thermoformed, for example, to make rigid automotive goods such as glovebox covers, hubcaps, and the like.
Inventors
- 👤 Linwood P. Tenney
- 👤 Parley C. Lane, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; Y; Y10; Y10S; Y10S526/00; Y10S526/916
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
141 words
A ring-opening polymerized copolymer comprising polymerized units of (a) 1,2-dihydrodicyclopentadiene, (b) from about 5 wt.% to about 95 wt.% of norbornene, at least one alkylnorbornene wherein each alkyl group contains from 1 to 20 carbon atoms, or a mixture thereof, and (c) from about 0.0001 to about 0.5 mole of at least one acyclic monoolefin or nonconjugated acyclic olefin per mole of total norbornene, alkylnorbornene and dicyclopentadiene, said acyclic monoolefin or nonconjugated acyclic olefin containing from 2 to 12 carbon atoms and having at least one hydrogen on each double-bonded carbon atom, said copolymer containing groups primarily of the following types in random order, where m and n are numbers which are proportional to the concentration of the norbornene or alkylnorbornene and the dihydrodicyclopentadiene, respectively, and X is hydrogen or an alkyl group containing from 1 to 20 carbon atoms: ##STR3##
Claim 2
Dependent Claim
141 words
A ring-opening polymerized copolymer comprising polymerized units of (a) 1,2-dihydrodicyclopentadiene, (b) from about 5 wt.% to about 95 wt.% of norbornene, at least one alkylnorbornene wherein each alkyl group contains from 1 to 20 carbon atoms, or a mixture thereof, and (c) from about 0.0001 to about 0.5 mole of at least one acyclic monoolefin or nonconjugated acyclic olefin per mole of total norbornene, alkylnorbornene and dicyclopentadiene, said acyclic monoolefin or nonconjugated acyclic olefin containing from 2 to 12 carbon atoms and having at least one hydrogen on each double-bonded carbon atom, said copolymer containing groups primarily of the following types in random order, where m and n are numbers which are proportional to the concentration of the norbornene or alkylnorbornene and the dihydrodicyclopentadiene, respectively, and X is hydrogen or an alkyl group containing from 1 to 20 carbon atoms: ##STR3##
Claim 3
Dependent Claim
29 words
A copolymer of claim 1 containing polymerized units of said norbornene, alkylnorbornene or mixture thereof in an amount from 30 to about 95 wt.% based upon total copolymer weight.
Claim 4
Dependent Claim
29 words
A copolymer of claim 2 containing polymerized units of said norbornene, alkylnorbornene or mixture thereof in an amount from 30 to about 75 wt.% based upon total copolymer weight.
Claim 5
Dependent Claim
21 words
A copolymer of claim 3 wherein said acyclic monoolefin is a 1-olefin or 2-olefin containing from 2 to 8 carbon atoms.
Claim 6
Dependent Claim
17 words
A copolymer of claim 4 wherein monomer (b) is norbornene, and said 1-olefin is 1-butene or 1-hexene.
Claim 7
Dependent Claim
10 words
A copolymer of claim 4 wherein monomer (b) is methylnorbornene.
Claim 8
Dependent Claim
17 words
A copolymer of claim 6 wherein said methylnorbornene is 5-methyl-2-norbornene, and said 1-olefin is 1-butene or 1-hexene.
Claim 9
Dependent Claim
10 words
A copolymer of claim 4 wherein monomer (b) is dimethylnorbornene.
Claim 10
Dependent Claim
17 words
A copolymer of claim 8 wherein said dimethylnorbornene is 5,6-dimethyl-2-norbornene, and said 1-olefin is 1-butene or 1-hexene.
Claim 11
Dependent Claim
10 words
A copolymer of claim 4 wherein monomer (b) is ethylnorbornene.
Claim 12
Dependent Claim
17 words
A copolymer of claim 10 wherein said ethylnorbornene is 5-ethyl-2-norbornene, and said 1-olefin is 1-butene or 1-hexene.
Claim 13
Dependent Claim
10 words
A copolymer of claim 4 wherein monomer (b) is hexylnorbornene.
Claim 14
Dependent Claim
17 words
A copolymer of claim 12 wherein said hexylnorbornene is 5-hexyl-2-norbornene, and said olefin is 1-butene or 1-hexene.
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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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |