US3764639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block copolymers of conjugated dienes and lactones
Assignee: Phillips Petroleum Co
•
Filing: 1971-02-16
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Granted: 1973-10-09
•
Expires: 1991-02-16
Abstract
Abstract Block copolymers formed from a conjugated diene or monovinyl substituted aromatic compound and a lactone using a lithiumcontaining catalyst.
Inventors
- 👤 H Hsieh
- 👤 F Mueller
- 👤 W Busler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
51 words
The block copolymer of claim 1 consisting essentially of two segments wherein one segment is a homopolymer block of a conjugated diene having from 4 to 12 carbon atoms per molecule, and the other segment is said polyester polymer attached to one end of the homopolymer block of said conjugated diene.
Claim 2
Dependent Claim
23 words
The block copolymer of claim 2 wherein said conjugated diene is at least one of butadiene, isoprene, or piperylene, and R is hydrogen.
Claim 3
Dependent Claim
17 words
The block copolymer of claim 3 wherein the conjugated diene is butadiene and the lactone is epsilon-caprolactone.
Claim 4
Dependent Claim
58 words
The block copolymer of claim 1 consisting essentially of two segments, the first segment being a copolymer of at least one of said conjugated dienes and at least one of said monovinyl-substituted aromatic compounds, and the second segment being a polyester polymer derived from at least one of said lactones attached to one end of the first segment.
Claim 5
Dependent Claim
31 words
The block copolymer of claim 5 wherein said conjugated diene is at least one of butadiene, isoprene, piperylene, said monovinyl-substituted aromatic compound is styrene, and R in the formula is hydrogen.
Claim 6
Dependent Claim
11 words
The block copolymer of claim 6 wherein said lactone is epsilon-caprolactone.
Claim 7
Dependent Claim
54 words
The block copolymer of claim 1 consisting essentially of three segments, one segment being a polymer of at least one of said conjugated dienes having attached to each end thereof a polyester polymer derived from at least one of said lactones, the two polyester segments being derived from the same lactone monomer or monomers.
Claim 8
Dependent Claim
26 words
The block copolymer of claim 8 wherein said conjugated diene is at least one of butadiene, isoprene or piperylene and R in the formula is hydrogen.
Claim 9
Dependent Claim
23 words
The block copolymer of claim 9 wherein the first and third segments are polyester polymers derived from the same lactone which is epsilon-caprolactone.
Claim 10
Dependent Claim
12 words
The block copolymer of claim 10 wherein said conjugated diene is butadiene.
Claim 11
Dependent Claim
69 words
The block copolymer of claim 1 consisting essentially of three segments, the first segment being a polymer of at least one of said monovinyl-substituted aromatic compounds, and having attached to one end thereof a second segment of A polymer of at least one of said conjugated dienes, the polymer segment of said conjugated dienes having also attached thereto a polyester polymer derived from at least one of said lactones.
Claim 12
Dependent Claim
25 words
The block copolymer of claim 12 wherein said monovinyl-substituted compound is styrene and said conjugated diene is at least one of butadiene, isoprene, or piperylene.
Claim 13
Dependent Claim
13 words
The block copolymer of claim 13 wherein R in the formula is hydrogen.
Claim 14
Dependent Claim
11 words
The block copolymer of claim 14 wherein said lactone is epsilon-caprolactone.
Claim 15
Dependent Claim
23 words
The block copolymer of claim 12 wherein said monovinyl-substituted aromatic compound is styrene, said conjugated diene is butadiene, and said lactone is epsilon-caprolactone.
Claim 16
Dependent Claim
12 words
An article of manufacture made from the block copolymer of claim 1.
Claim 17
Dependent Claim
12 words
An article of manufacture made from the block copolymer of claim 5.
Claim 18
Dependent Claim
12 words
An article of manufacture made from the block copolymer of claim 8.
Claim 19
Dependent Claim
12 words
An article of manufacture made from the block copolymer of claim 12.
Claim 20
Dependent Claim
10 words
A film formed of the block copolymer of claim 1.
Claim 21
Dependent Claim
10 words
A film formed of the block copolymer of claim 2.
References Cited (Backward Citations)
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Cited
US3169945A
Cited
US3029221A
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US3225121A
Cited
US3231635A
Cited
US3418393A
Cited
US3557255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |