US3625924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oriented films of methyl vinyl ether-maleic anhydride copolymers
Assignee: GAF Corp
•
Filing: 1969-12-04
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Granted: 1971-12-07
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Expires: 1989-12-04
Abstract
Abstract Oriented films of polymers of methyl vinyl ether and maleic anhydride are disclosed. Additionally, terpolymers of methyl vinyl ether, maleic anhydride and higher alkyl vinyl ethers are disclosed. The films can be uniaxially, biaxially, or multiaxially oriented.
Inventors
- 👤 Nathan D Field
- 👤 Donald H Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/04; C08F222/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
10 words
A film according to claim 1, which is uniaxially oriented.
Claim 2
Dependent Claim
10 words
A film according to claim 1, which is biaxially oriented.
Claim 3
Dependent Claim
10 words
A film according to claim 1, which is multiaxially oriented.
Claim 4
Dependent Claim
29 words
A film, according to claim 1, wherein said polymer is said copolymer and said methyl vinyl ether and said maleic anhydride are each present in about 50 mole percent.
Claim 5
Dependent Claim
35 words
A film according to claim 1, wherein said polymer is said partial ester. 7, A film according to claim 6, wherein the alcohol moiety of said partial ester has from one to 10 carbon atoms.
Claim 6
Dependent Claim
27 words
A film according to claim 7, wherein said alcohol moiety is derived from a member of the group consisting of ethyl alcohol, isopropyl alcohol and n-butyl alcohol.
Claim 7
Dependent Claim
12 words
A film according to claim 1, wherein said polymer is said terpolymer.
Claim 8
Dependent Claim
23 words
A film according to claim 9, wherein the alkyl group of said other alkyl vinyl ether has from two to 22 carbon atoms.
Claim 9
Dependent Claim
42 words
A film according to claim 9, wherein said methyl vinyl ether is present in about 40-49 mole percent, said other alkyl vinyl ether is present in from about 10-1 mole percent and said maleic anhydride is present in about 50 mole percent.
Claim 10
Dependent Claim
16 words
A film according to claim 11, wherein said other alkyl vinyl ether is hexadecyl vinyl ether.
References Cited (Backward Citations)
US2979774A
Cited
US3466356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |