US3275579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysulfide polymer sealing composition
Assignee: WR Grace and Co
•
Filing: 1964-01-22
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Granted: 1966-09-27
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Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 Robert F Stierli
- 👤 Becker John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:49
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1012; C08; C08L; C08L81/00; C09K2003/1034; C09K2003/1056
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A COMPOSITION WHICH IS DEVOID OF WATER COMPRISING A LIQUID POLYSULFIDE POLYMER CONTAINING RECURRING DISULFIDE LINKAGES (-S-S-) AND IS A POLYFUNCTIONAL MERCAPTAN, ZINC OXIDE PARTICLES COATED WITH A WATER-SOLUBLE ADHESIVE SAID ADHESIVE BEING PRESENT IN AN AMOUNT OF ABOUT 0.5 TO 2.0 PERCENT BY WEIGHT OF THE ZINC OXIDE, AND AN AMINECARRYING MOLECULAR SIEVE CONTAINING 2 TO 10 PERCENT AMINE BY WEIGHT OF THE ZINC OXIDE WHEREIN THE AMINE IS AN ACCELERATOR FOR THE ZINC OXIDE.
Claim 2
Dependent Claim
76 words
A COMPOSITION WHICH IS DEVOID OF WATER COMPRISING A LIQUID POLYSULFIDE POLYMER CONTAINING RECURRING DISULFIDE LINKAGES (-S-S-) AND IS A POLYFUNCTIONAL MERCAPTAN, ZINC OXIDE PARTICLES COATED WITH A WATER-SOLUBLE ADHESIVE SAID ADHESIVE BEING PRESENT IN AN AMOUNT OF ABOUT 0.5 TO 2.0 PERCENT BY WEIGHT OF THE ZINC OXIDE, AND AN AMINECARRYING MOLECULAR SIEVE CONTAINING 2 TO 10 PERCENT AMINE BY WEIGHT OF THE ZINC OXIDE WHEREIN THE AMINE IS AN ACCELERATOR FOR THE ZINC OXIDE.
Claim 3
Dependent Claim
15 words
A COMPOSITION WHICH IS DEVOID OF WATER COMPRISING A LIQUID POLYSULFIDE POLYMER HAVING THE FORMULA
Claim 4
Dependent Claim
15 words
A COMPOSITION WHICH IS DEVOID OF WATER COMPRISING A LIQUID POLYSULFIDE POLYMER HAVING THE FORMULA
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |