Patent US2955098A successfully refreshed from Google Patents.
US2955098A
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Polyethylene compositions of improved clarity comprising polyethylene and a polyurethane and process of making same
Assignee: Imperial Chemical Industries Ltd
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Filing: 1958-10-21
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Granted: 1960-10-04
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Expires: 1978-10-21
Abstract
No abstract record available.
Inventors
- 👤 Last Anthony Graham Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:41
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S525/00; Y10S525/932
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A POLYETHYLENE COMPOSITION OF IMPROVED CLARITY COMPRISING POLYETHYLENE AND, INCORPORATED THEREWITH, FROM 0.001 TO 5 PARTS PER 100 PARTS OF POLYETHYLENE, BY WEIGHT, OF AT LEAST ONE POLYURETHANE COMPRISING THE CONDENSATION PRODUCT OF A POLYISOCYANATE AND AN ALIPHATIC POLYHYDROXY COMPOUND, SAID CONDENSATION PRODUCT HAVING A MOLECULAR CHAIN LENGTH GREATER THAN 200 A. IN THE UNCOILED STATE AND AT LEAST ONE CRYSTAL UNIT CELL SPACING SIMILAR TO A SPACING OF THE POLYETHYLENE CRYSTAL UNIT CELL, AND A MELTING POINT OF NOT LESS THAN 120*C.
Claim 2
Dependent Claim
83 words
A POLYETHYLENE COMPOSITION OF IMPROVED CLARITY COMPRISING POLYETHYLENE AND, INCORPORATED THEREWITH, FROM 0.001 TO 5 PARTS PER 100 PARTS OF POLYETHYLENE, BY WEIGHT, OF AT LEAST ONE POLYURETHANE COMPRISING THE CONDENSATION PRODUCT OF A POLYISOCYANATE AND AN ALIPHATIC POLYHYDROXY COMPOUND, SAID CONDENSATION PRODUCT HAVING A MOLECULAR CHAIN LENGTH GREATER THAN 200 A. IN THE UNCOILED STATE AND AT LEAST ONE CRYSTAL UNIT CELL SPACING SIMILAR TO A SPACING OF THE POLYETHYLENE CRYSTAL UNIT CELL, AND A MELTING POINT OF NOT LESS THAN 120*C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |