US2905657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene terephthalates modified with chain-terminating compounds and process therefor
Assignee: Solutia Inc
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Filing: 1955-12-16
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Granted: 1959-09-22
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 William A H Huffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; Y; Y10; Y10S; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PREPARING FIBER-FORMING DYE-RECEPTIVE MODIFIED POLYETHYLENE TEREPHALATE CONTAINING CHAINTERMINATING GROUPS WHICH COMPRISES MIXING TOGETHER AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TEREPHALIC ACID AND DIMETHYL TEREPHTHALATE, AND ETHYLENE GLYCOL, WITH FROM 0.05 TO 1.0 MOLE PERCENT, BASED ON THE WEIGHT OF THE FIRST-NAMED COMPOUND, OF A MONOHYDRIC POLYMERIC HYDROXYL COMPOUND SELECTED FROM THE GROUP CONCISTING OF MONOHYDRIC POLYALKYLENE OXIDES H AVING THE FORMULA:
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PREPARING FIBER-FORMING DYE-RECEPTIVE MODIFIED POLYETHYLENE TEREPHALATE CONTAINING CHAINTERMINATING GROUPS WHICH COMPRISES MIXING TOGETHER AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TEREPHALIC ACID AND DIMETHYL TEREPHTHALATE, AND ETHYLENE GLYCOL, WITH FROM 0.05 TO 1.0 MOLE PERCENT, BASED ON THE WEIGHT OF THE FIRST-NAMED COMPOUND, OF A MONOHYDRIC POLYMERIC HYDROXYL COMPOUND SELECTED FROM THE GROUP CONCISTING OF MONOHYDRIC POLYALKYLENE OXIDES H AVING THE FORMULA:
References Cited (Backward Citations)
US2744087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |