US3565852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of moulding material starting from polyethylene terephthalate
Assignee: Agfa Gevaert NV
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Filing: 1968-06-24
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Granted: 1971-02-23
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Expires: 1988-06-24
Abstract
Abstract A MOULDING MATERIAL HAVING IMPROVED PROPERTIES COMPRISING A MIXTURE OF POLYETHLENE TEREPHTHALATE HAVING AN INHERENT VISCOSITY OF AT LEAST 0.65 DL./G MEASURED AT 25* C. TIN A 60:40 MIXTURE OF PHENOL AND TETRACHLOROETHANE, AN AMOUNT OF 0.1 TO 10 PERCENT BY WEIGHT OF A SATURATED POLYESTER AT LEAST PARTLY ALIPHATIC IN NATURE, COMPATIBLE WITH POLYETHYLENE TEREPHTHALATE, AND HAVING A POLYMER MELT TEMPERATURE OF AT MOST 150*C. AND AN INHERENT VISCOSITY OF AT LEAST 0.3 DL./G., AND 0 TO 1 PERCENT BY WEIGHT OF A FINELY DIVIDED, INERT, MINERAL, SOLID SUBSTANCE HAVING AN AVERAGE PARTICLE SIZE OF LESS THAN 10U AND METHOD OF PREPARING SAME IS DESCRIBED.
Inventors
- 👤 Andre Jan Conix
- 👤 Lambert Gaston Jeurissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:55
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 0
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |