US3299177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene modified with branched polyethylene wax
Assignee: Union Carbide Corp
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Filing: 1962-10-01
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Granted: 1967-01-17
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Reding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:35
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR PRODUCING MODIFIED POLYETHYLENE WHICH COMPRISES POLYMERIZING ETHYLENE IN CONTACT WITH A FREE RADICAL INITIATOR AND A PRE-FORMED, HIGHLY BRANCHED, LOW MOLECULAR WEIGHT POLYETHYLENE WAX, SAID POLYETHYLENE WAX HAVING A FLOW RATE OF FROM ABOUT 50 DECIGRAMS PER MINUTE TO ABOUT 500 DECIGRAMS PER MINUTE, A DENSITY OF FROM ABOUT 0.80/CC. TO ABOUT 0.92 GRAM/CC. AT 23* C., AND A SPECIFIC VISCOSITY IN METHYLCYCLOHEXANE AT 70* C. OF FROM ABOUT 0.05 TO ABOUT 0.15 SO AS TO PRODUCE A MODIFIED POLYETHYLENE HAVING A MELT INDEX OF FROM ABOUT 0.002 DECIGRAM PER MINUTE TO ABOUT 3.0 DECIGRAMS PER MINUTE AND CONTAINING FROM ABOUT 5 PERCENT BY WEIGHT TO ABOUT 20 PERCENT BY WEIGHT OF CHEMICALLY COMBINED POLYETHYLENE WAX.
Claim 2
Dependent Claim
119 words
A PROCESS FOR PRODUCING MODIFIED POLYETHYLENE WHICH COMPRISES POLYMERIZING ETHYLENE IN CONTACT WITH A FREE RADICAL INITIATOR AND A PRE-FORMED, HIGHLY BRANCHED, LOW MOLECULAR WEIGHT POLYETHYLENE WAX, SAID POLYETHYLENE WAX HAVING A FLOW RATE OF FROM ABOUT 50 DECIGRAMS PER MINUTE TO ABOUT 500 DECIGRAMS PER MINUTE, A DENSITY OF FROM ABOUT 0.80/CC. TO ABOUT 0.92 GRAM/CC. AT 23* C., AND A SPECIFIC VISCOSITY IN METHYLCYCLOHEXANE AT 70* C. OF FROM ABOUT 0.05 TO ABOUT 0.15 SO AS TO PRODUCE A MODIFIED POLYETHYLENE HAVING A MELT INDEX OF FROM ABOUT 0.002 DECIGRAM PER MINUTE TO ABOUT 3.0 DECIGRAMS PER MINUTE AND CONTAINING FROM ABOUT 5 PERCENT BY WEIGHT TO ABOUT 20 PERCENT BY WEIGHT OF CHEMICALLY COMBINED POLYETHYLENE WAX.
References Cited (Backward Citations)
US2542771A
Cited
US2897183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |