US2926159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of chlorination of polyolefins
Assignee: Hercules Powder Co
•
Filing: 1959-02-12
•
Granted: 1960-02-23
•
Expires: 1979-02-12
Abstract
No abstract record available.
Inventors
- 👤 John S Tinsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:07
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE PROCESS OF CHLORINATING A POLYOLEFIN OF THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, AND COPOLYMERS OF ETHYULENE AND PROPYLENE WHICH COMPRISES CONTACTING SAID POLYOLEFIN IN SUSPENSION IN A SATURATED AQUEOUS SOLUTION OF HYDROGEN CHLORIDE AT A TEMPERATURE IN THE RANGE OF 65* TO ABOUT 105*C. WITH CHLORINE GAS WHILE AGITATING AND IRRADIATING WITH LIGHT IN THE 2500-6000 A. RANGE UNTIL A POLYMER HAVING A CHLORINE CONTENT OF AT LEAST 5% IS OBTAINED.
Claim 2
Dependent Claim
72 words
THE PROCESS OF CHLORINATING A POLYOLEFIN OF THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, AND COPOLYMERS OF ETHYULENE AND PROPYLENE WHICH COMPRISES CONTACTING SAID POLYOLEFIN IN SUSPENSION IN A SATURATED AQUEOUS SOLUTION OF HYDROGEN CHLORIDE AT A TEMPERATURE IN THE RANGE OF 65* TO ABOUT 105*C. WITH CHLORINE GAS WHILE AGITATING AND IRRADIATING WITH LIGHT IN THE 2500-6000 A. RANGE UNTIL A POLYMER HAVING A CHLORINE CONTENT OF AT LEAST 5% IS OBTAINED.
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |