US3095387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-temperature expansion of liquid organic polysulfide polymer with sodium azodicarboxylate
Assignee: Uniroyal Inc
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Filing: 1960-11-14
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Granted: 1963-06-25
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Martin J Kleinfeld
- 👤 Byron A Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/102; C08G; C08G75/00; C08G75/14; C08G75/16; C08J2381/00; C08J2381/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF MAKING AN EXPANDED, CURED RUBBER PRODUCT COMPRISING INCORPORATING INTO A LIQUID ORGANIC POLYSULFIDE POLYMER WHICH IS A POLYALKYLENE POLYSULFIDE CONTAINING SULFHYDRYL GROUPS, AN OXIDATIVE CURATIVE FOR SAID POLYMER AND, AS A BLOWING AGENT, AN ALKALI METAL AZODICARBOXYLATE, AND SUBJECTING THE RESULTING MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF FROM 10*C. TO 100*C. WHEREBY THE SAID ALKALI METAL AZODICARBOXYLATE DECOMPOSES UNDER THE INFLUENCE OF WATER RELEASED BY THE ACTION OF THE SAID CURATIVE ON THE SAID POLYMER TO PRODUCE GASEOUS PRODUCTS CAPABLE OF EXPANDING SAID MIXTURE, AND THE COMPOSITION SIMULTANEOUSLY CURES TO PRODUCE AN EXPANDED, CURED RUBBER PRODUCT.
Claim 2
Independent Claim
101 words
A METHOD OF MAKING AN EXPANDED, CURED RUBBER PRODUCT COMPRISING INCORPORATING INTO A LIQUID ORGANIC POLYSULFIDE POLYMER WHICH IS A POLYALKYLENE POLYSULFIDE CONTAINING SULFHYDRYL GROUPS, AN OXIDATIVE CURATIVE FOR SAID POLYMER AND, AS A BLOWING AGENT, AN ALKALI METAL AZODICARBOXYLATE, AND SUBJECTING THE RESULTING MIXTURE TO A TEMPERATURE WITHIN THE RANGE OF FROM 10*C. TO 100*C. WHEREBY THE SAID ALKALI METAL AZODICARBOXYLATE DECOMPOSES UNDER THE INFLUENCE OF WATER RELEASED BY THE ACTION OF THE SAID CURATIVE ON THE SAID POLYMER TO PRODUCE GASEOUS PRODUCTS CAPABLE OF EXPANDING SAID MIXTURE, AND THE COMPOSITION SIMULTANEOUSLY CURES TO PRODUCE AN EXPANDED, CURED RUBBER PRODUCT.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |