US2962479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of the cross-linking polymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-05-16
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Granted: 1960-11-29
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Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Aldridge Clyde Lee
- 👤 Richard D Gilliom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16; C08K3/38; C08K5/00; C08K5/01; C08K5/02; C08K5/04; C08K5/07; C08L; C08L9/00; C08L9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD FO CURING UNSATURATED POLYMERS CHOSEN FROM THE GROUP CONSISTING OF A COPOLYMER OF ISOBUTYLENE WITH A MINOR PORPORTION OF A MULTI-OLEFIN CONTAINING FROM 4 TO 14 CARBON ATOMS, AND A COPOLYMER OF 75 TO 100 PARTS BY WEIGHT OF BUTADIENE, AND 0 TO 25 PARTS BY WEIGHT OF STYRENE WHICH COMPRISES CONTACTING THE POLYMER AT A TEMPERATURE BETWEEN 0* AND 200*C. WITH A MIXTURE OF 0.1 TO 20 PARTS BY WEIGHT OF A FRIEDEL-CRAFTS CATALYST PER 100 PARTS BY WEIGHT OF SAID COPOLYMER, 150 TO 2,000 PARTS BY WEIGHT OF A C5 TO C8 HYCROCARBON SOLVENT, 0.5 TO 100 PARTS BY WEIGHT OF CHLOROFORM, AND 0.1 TO 10 PARTS BY WEIGHT OF PARAFORMALDEHYDE.
Claim 2
Independent Claim
115 words
A METHOD FO CURING UNSATURATED POLYMERS CHOSEN FROM THE GROUP CONSISTING OF A COPOLYMER OF ISOBUTYLENE WITH A MINOR PORPORTION OF A MULTI-OLEFIN CONTAINING FROM 4 TO 14 CARBON ATOMS, AND A COPOLYMER OF 75 TO 100 PARTS BY WEIGHT OF BUTADIENE, AND 0 TO 25 PARTS BY WEIGHT OF STYRENE WHICH COMPRISES CONTACTING THE POLYMER AT A TEMPERATURE BETWEEN 0* AND 200*C. WITH A MIXTURE OF 0.1 TO 20 PARTS BY WEIGHT OF A FRIEDEL-CRAFTS CATALYST PER 100 PARTS BY WEIGHT OF SAID COPOLYMER, 150 TO 2,000 PARTS BY WEIGHT OF A C5 TO C8 HYCROCARBON SOLVENT, 0.5 TO 100 PARTS BY WEIGHT OF CHLOROFORM, AND 0.1 TO 10 PARTS BY WEIGHT OF PARAFORMALDEHYDE.
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |