Patent US2749323A successfully refreshed from Google Patents.
US2749323A
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US
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Acceleration of the vulcanization of butyl rubber with dimethylol phenols and product obtained thereby
Assignee: Uniroyal Inc
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Filing: 1953-01-26
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Granted: 1956-06-05
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Expires: 1973-01-26
Abstract
No abstract record available.
Inventors
- 👤 William E Schaefer
- 👤 Harvey J Batts
- 👤 Donald A Brafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:48
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0654; B29D2030/0655
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD OF VULCANIZING A SYNTHETIC RUBBERY COPOLYMER OF AN ISO-MONO-OLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10 PERCENT OF AN ALIPHATIC CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS COMPRISING THE STEP OF HEATING 400 PARTS OF THE SAID RUBBER IN ADMIXTURE WITH FROM 0.2 TO 20 PARTS OF A 2,6-DIMETHYLOL4-HYDROCARBON PHENOL AS THE CURING AGENT, AND FROM 1 TO 10 PARTS OF CHLOROSULFONATED POLYETHYLENE AS ACCELERATOR, AT A TEMPERATURE OF 200*-400* F. FOR FROM 5 MINUTES TO 3 HOURS.
Claim 2
Independent Claim
87 words
A METHOD OF VULCANIZING A SYNTHETIC RUBBERY COPOLYMER OF AN ISO-MONO-OLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10 PERCENT OF AN ALIPHATIC CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS COMPRISING THE STEP OF HEATING 400 PARTS OF THE SAID RUBBER IN ADMIXTURE WITH FROM 0.2 TO 20 PARTS OF A 2,6-DIMETHYLOL4-HYDROCARBON PHENOL AS THE CURING AGENT, AND FROM 1 TO 10 PARTS OF CHLOROSULFONATED POLYETHYLENE AS ACCELERATOR, AT A TEMPERATURE OF 200*-400* F. FOR FROM 5 MINUTES TO 3 HOURS.
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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |