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US3231529A
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US
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Gasket compositions comprising polyvinyl chloride and vinyl ester interpolymers
Assignee: WR Grace and Co
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Filing: 1960-11-18
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Granted: 1966-01-25
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Hans H Kuhn
- 👤 Richard J Haberlin
- 👤 Goodman Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:07
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08K; C08K5/00; C08K5/01; C08K5/04; C08K5/15; C08L31/00; C08L31/02; C08L63/00; C08L91/00; Y; Y10; Y10S; Y10S260/00; Y10S260/37
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
128 words
A CONTAINER CLOSURE COMPRISING A CAP ADAPTED TO BE MECHANICALLY ATTACHED TO A CONTAINER OPENING AND A RUBBERY GASKET POSITIONED THEREIN TO REGISTER WITH THE LIP OF THE CONTAINER, SAID GASKET COMPRISING A PLASTISOL OF A VINYL CHLORIDE POLYMER CONTAINING AN INCOMPATIBLE AMOUNT OF ABOUT 5 TO 10 WEIGHT PERCENT OF A NON-VOLATILE, NORMALLY LIQUID PROCESSING AID SELECTED FROM THE GROUP CONSISTING OF A PARAFFINIC PETROLEUM OIL AND AN EPOXIDIZED GLYCERIDE AND 0.5 TO 2.0 WEIGHT PERCENT OF A LUBRICANT SOLUBLE IN SAID LIQUID PROCESSING AID, SID LUBRICANT COMPRISING A NON-VOLATILE NORMALLY VISCOUS LIQUID INTERPOLYMER OF AT LEAST TWO VINYL ESTERS OF A C8 TO C22 SATURATED MONOCARBOXYLIC ALIPHATIC ACID AND VINYL ESTER OF A SATURATED MONOCARBOXYLIC FATTY ACID HAVING 2 TO 6 CARBON ATOMS IN THE MOLECULE.
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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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |