US3607362A
Expired / Lapsed
US
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Plastisol gasket composition
Assignee: Continental Can Co Inc
•
Filing: 1969-05-14
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Granted: 1971-09-21
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Expires: 1989-05-14
Abstract
Abstract Closure caps are lined with plastisol compositions which exhibit low orders of gas transmission, the compositions being comprised of a carboxyl containing vinyl chloride polymer and an epoxidized unsaturated fatty oil.
Inventors
- 👤 James B Cormack Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:42
CPC Classifications
B; B65; B65D; B65D53/00; B65D53/06; C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; Y; Y10; Y10S; Y10S260/00; Y10S260/37; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
The closure cap of claim 1 wherein the vinyl chloride polymer has an inherent viscosity between 1.2 and 1.5.
Claim 2
Dependent Claim
17 words
The closure cap of claim 2 wherein the vinyl chloride polymer is a vinyl chloride/maleic acid copolymer.
Claim 3
Dependent Claim
23 words
The closure cap of claim 3 wherein the vinyl chloride/maleic acid copolymer contains about 1 to about 5 percent by weight maleic acid.
Claim 4
Dependent Claim
17 words
The closure cap of claim 3 wherein the epoxidized unsaturated fatty oil is epoxidized soya bean oil.
Claim 5
Dependent Claim
32 words
The closure cap of claim 1 wherein the gasket composition is comprised of 100 parts of carboxyl containing vinyl chloride copolymer and 50 to 100 parts of the epoxidized unsaturated fatty oil.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |