US3347835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the chlorosulfonation of polyethylene
Assignee: EIDP Inc
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Filing: 1964-11-20
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Granted: 1967-10-17
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Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 Lorenz John Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:53
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F8/38; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR CHLOROSULFONATING POLYOLEFINS WHICH ARE SOLID AT 70*C. WHICH COMPRISES (A) FORMING A HOMOGENEOUS MASS CONSISTING ESSENTIALLY OF THE POLYOLEFIN AND SULFURYL CHLORIDE IN A WEIGHT RATIO OF AT LEAST 25 PARTS OF SULFURYL CHLORIDE PER 100 PARTS OF POILYOLEFIN, (B) THEREAFTER ADDING A FREE-RADICAL GENERATING CATALYST, AND (C) INITIATING CHLORSULFONATION BY GENERATING FREE RADICALS WITHIN THE MASS.
Claim 2
Dependent Claim
60 words
A PROCESS FOR CHLOROSULFONATING POLYOLEFINS WHICH ARE SOLID AT 70*C. WHICH COMPRISES (A) FORMING A HOMOGENEOUS MASS CONSISTING ESSENTIALLY OF THE POLYOLEFIN AND SULFURYL CHLORIDE IN A WEIGHT RATIO OF AT LEAST 25 PARTS OF SULFURYL CHLORIDE PER 100 PARTS OF POILYOLEFIN, (B) THEREAFTER ADDING A FREE-RADICAL GENERATING CATALYST, AND (C) INITIATING CHLORSULFONATION BY GENERATING FREE RADICALS WITHIN THE MASS.
References Cited (Backward Citations)
US2405971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |