US3068207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the dyeability of linear condensation polymer esters with chelatable dyes
Assignee: EIDP Inc
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Filing: 1959-09-21
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Granted: 1962-12-11
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Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Iannicelli Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01F6/00; D01F6/78; D01F6/84; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE PROCESS OF MODIFYING SYNTHETIC LINEAR FIBERFORMING GLYCOL DISCARBOXYLIC ACID POLYESTERS WHICH COMPRISES FORMING A MOLTEN MIXTURE OF (A) THE POLYESTER, (B) A DIANHYDRIDE A PRESENT IN THE AMOUNT BETWEEN ABOUT 0.25 AND ABOUT 10 MOL PERCENT BASED ON THE NUMBER OF MOLS OF THE RECURRING ACID RESIDUES IN THE POLYESTER, SAID ANHYDRIDE HAVING THE FORMULA R((CO)2O)2 IN WHICH R IS AN ORGANIC RADICAL CHARACTERIZED IN THAT NO TWO OF THE ATTACHED CARBOXYL SUBSTITUENTS ARE JOINED AT THE SAME CARBON ATOM IN THE RADICAL AND IS THERMALLY STABLE AT 250*C. TO 600*C., AND (C) A SALT OF A CHCLATE-FORMING METAL SOLUBLE IN THE MELTED POLYESTER, AND THEREAFTER EXTRUCING THE MIXTURE WITHIN 30 MINUTES FROM THE FORMATION OF THE MOLTEN MIXTURE.
Claim 2
Dependent Claim
120 words
THE PROCESS OF MODIFYING SYNTHETIC LINEAR FIBERFORMING GLYCOL DISCARBOXYLIC ACID POLYESTERS WHICH COMPRISES FORMING A MOLTEN MIXTURE OF (A) THE POLYESTER, (B) A DIANHYDRIDE A PRESENT IN THE AMOUNT BETWEEN ABOUT 0.25 AND ABOUT 10 MOL PERCENT BASED ON THE NUMBER OF MOLS OF THE RECURRING ACID RESIDUES IN THE POLYESTER, SAID ANHYDRIDE HAVING THE FORMULA R((CO)2O)2 IN WHICH R IS AN ORGANIC RADICAL CHARACTERIZED IN THAT NO TWO OF THE ATTACHED CARBOXYL SUBSTITUENTS ARE JOINED AT THE SAME CARBON ATOM IN THE RADICAL AND IS THERMALLY STABLE AT 250*C. TO 600*C., AND (C) A SALT OF A CHCLATE-FORMING METAL SOLUBLE IN THE MELTED POLYESTER, AND THEREAFTER EXTRUCING THE MIXTURE WITHIN 30 MINUTES FROM THE FORMATION OF THE MOLTEN MIXTURE.
References Cited (Backward Citations)
US2437232A
Cited
US2945010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |