US3026294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing chlorosulfonated polyethylene elastomers
Assignee: EIDP Inc
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Filing: 1959-09-30
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Granted: 1962-03-20
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Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 Lieberman Erwin Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/26; C08L23/32; C08L23/34; C08G; C08G59/00; C08G59/02; C08G59/10; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN THE PROCESS OF CURING AN ELASTOMERIC CHLOROSULFONATED POLYETHYLENE CONTAINING 0.75 TO 3.0% SULFUR, SAID SULFUR BEING IN THE FORM OF -SO2CI GROUPS, THE IMPROVEMENT WHEREIN A REACTION PRODUCT OF (A) 2 TO 4 PARTS, PER 100 PARTS OF SAID CHLOROSULFONATED POLYETHYLENE, OF MEMTHANE DIAMINE AND (B) 1.5 TO 4.0 MOLES, PER MOLE OF SAID DIAMINE, OF AN EPOXY RESIN MADE FROM (1) BIS(4-HYDROXYPHENYL) DIMETHYLMETHANE AND (2) EPICHLOROHYDRIN, SAID RESIN CONTAINING 2 EPOXY GROUPS PER RESIN MOLECULE, IS INCORPORATED IN SAID CHLOROSULFONATED POLYETHYLENE, FOLLOWED BY CURING THE RESULTING COMPOSITION.
Claim 2
Dependent Claim
89 words
IN THE PROCESS OF CURING AN ELASTOMERIC CHLOROSULFONATED POLYETHYLENE CONTAINING 0.75 TO 3.0% SULFUR, SAID SULFUR BEING IN THE FORM OF -SO2CI GROUPS, THE IMPROVEMENT WHEREIN A REACTION PRODUCT OF (A) 2 TO 4 PARTS, PER 100 PARTS OF SAID CHLOROSULFONATED POLYETHYLENE, OF MEMTHANE DIAMINE AND (B) 1.5 TO 4.0 MOLES, PER MOLE OF SAID DIAMINE, OF AN EPOXY RESIN MADE FROM (1) BIS(4-HYDROXYPHENYL) DIMETHYLMETHANE AND (2) EPICHLOROHYDRIN, SAID RESIN CONTAINING 2 EPOXY GROUPS PER RESIN MOLECULE, IS INCORPORATED IN SAID CHLOROSULFONATED POLYETHYLENE, FOLLOWED BY CURING THE RESULTING COMPOSITION.
References Cited (Backward Citations)
US2918439A
Cited
US2914496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |