US3029225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature and solvent resistance of elastomers
Assignee: Bjorksten Research Laboratories Inc
•
Filing: 1956-02-20
•
Granted: 1962-04-10
•
Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert P Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J2333/00; C08J2333/04; C08J2333/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR PREPARING A SYNTHETIC RUBBER BODY HAVING NON-POLAR FLEXIBLE INTERIOR AND HIGHLY POLAR SOLVENT RESISTANT SKIN COMPRISING THE STEPS OF PROVIDING A VULCANIZATE BY REACTING A COPOLYMER OF A MONOMERIC MIXTURE CONSISTING OF 98.5 PARTS BY WEIGHT OF AN ALKYL ACRYLATE AND 1.5 PARTS BY WEIGHT OF A VINYL TRIETHOXY SILANE WITH A VULCANIZING AGENT, IMMERSING THE VULCANIZATE IN A BOILING ALKALI METAL HYDROXIDE HAVING A CONCENTRATION OF FROM .2 TO 1.5 NORMALITY FOR A PERIOD OF ABOUT 10 TO 40 MINUTES.
Claim 2
Dependent Claim
84 words
A PROCESS FOR PREPARING A SYNTHETIC RUBBER BODY HAVING NON-POLAR FLEXIBLE INTERIOR AND HIGHLY POLAR SOLVENT RESISTANT SKIN COMPRISING THE STEPS OF PROVIDING A VULCANIZATE BY REACTING A COPOLYMER OF A MONOMERIC MIXTURE CONSISTING OF 98.5 PARTS BY WEIGHT OF AN ALKYL ACRYLATE AND 1.5 PARTS BY WEIGHT OF A VINYL TRIETHOXY SILANE WITH A VULCANIZING AGENT, IMMERSING THE VULCANIZATE IN A BOILING ALKALI METAL HYDROXIDE HAVING A CONCENTRATION OF FROM .2 TO 1.5 NORMALITY FOR A PERIOD OF ABOUT 10 TO 40 MINUTES.
References Cited (Backward Citations)
CA457696A
Cited
FR789166A
Cited
US2532583A
Cited
US2581832A
Cited
US2538273A
Cited
US2649439A
Cited
US2742378A
Cited
US2716638A
Cited
US2774697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |