US3332926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal degradation of polyolefins in the presence of a metal salt carboxylic acid catalyst
Assignee: Honeywell International Inc
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Filing: 1964-02-21
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Granted: 1967-07-25
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Expires: 1984-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph J Baron
- 👤 Julius P Rakus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:45
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/50; Y; Y10; Y10S; Y10S260/00; Y10S260/43; Y10S526/00; Y10S526/914
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
62 words
THE POLOYLEFIN DEGRADATION PROCESS WHICH COMPRISES MIXING WITH A CRYSTALLINE POLYOLEFIN FROM 0.75% TO 10% BY WEIGHT OF A METAL SALT OF A CARBOXYLIC ACID AND HEATING THE RESULTANT MIXTURE IN AN ATMOSPHERE SUBSTANTIALLY FREE OF OXYGEN TO A TEMPERATURE WITHIN THE RANGE OF FROM 275*C. TO 450*C. TO PRODUCE A POLYMER HAVING AN APPRECIABLY LOWER MOLECULAR WEIGHT THAN THE STARTING POLYOLEFIN.
Claim 2
Dependent Claim
62 words
THE POLOYLEFIN DEGRADATION PROCESS WHICH COMPRISES MIXING WITH A CRYSTALLINE POLYOLEFIN FROM 0.75% TO 10% BY WEIGHT OF A METAL SALT OF A CARBOXYLIC ACID AND HEATING THE RESULTANT MIXTURE IN AN ATMOSPHERE SUBSTANTIALLY FREE OF OXYGEN TO A TEMPERATURE WITHIN THE RANGE OF FROM 275*C. TO 450*C. TO PRODUCE A POLYMER HAVING AN APPRECIABLY LOWER MOLECULAR WEIGHT THAN THE STARTING POLYOLEFIN.
Claim 3
Dependent Claim
14 words
THE PROCESS AS DEFINED IN CLAIM 2, IN WHICH THE CATALYST IS SODIUM STEARATE.
References Cited (Backward Citations)
US3207739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |