Patent US3261818A successfully refreshed from Google Patents.
US3261818A
Expired / Lapsed
US
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Cross-linking polymers
Assignee: Hercules LLC
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Filing: 1963-03-29
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Granted: 1966-07-19
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Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Marcantonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/27; C08K5/28; C08F; C08F8/00; C08F8/30; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
46 words
PROCESS OF CROSS-LINKING A HYDROCARBON POLYMER WHICH COMPRISES TREATING SAID POLYMER WITH AN AROMATIC POLYAZIDE HAVING THE FORMULA R(N3)X WHERE R IS AN AROMATIC GROUPING INERT TO THE CROSS-LINKING REACTION AND X IS AN INTEGER GREATER THAN 1 IN THE PRESENCE OF A NONPROTONATING LEWIS ACID.
Claim 2
Dependent Claim
46 words
PROCESS OF CROSS-LINKING A HYDROCARBON POLYMER WHICH COMPRISES TREATING SAID POLYMER WITH AN AROMATIC POLYAZIDE HAVING THE FORMULA R(N3)X WHERE R IS AN AROMATIC GROUPING INERT TO THE CROSS-LINKING REACTION AND X IS AN INTEGER GREATER THAN 1 IN THE PRESENCE OF A NONPROTONATING LEWIS ACID.
Claim 3
Dependent Claim
12 words
PROCESS OF CLAIM 1 WHEREIN THE HYDROCARBON POLYMER IS A STYRENE-BUTADIENE COPOLYMER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |