Patent US3025266A successfully refreshed from Google Patents.
US3025266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesters prepared from a mixture of
Assignee: —
•
Filing: —
•
Granted: 1962-03-13
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:39
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/20; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A FIBER-FORMING MODIFIED POLYESTER MELTING AT A TEMPERATURE OF ABOVE 200*C., AND HAVING IMPROVED DYE RECEPTIVITY AND SOLUBILITY CONSISTING OF THE REACTION PRODUCT OF ONE MOLE EQUIVALENT OF A MIXTURE OF 95 TO 65 WEIGHT PERCENT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, ISOPHTHALIC ACID, AND DIALKYL ESTERS OF SAID ACIDS, THE ALKYL RADICALS OF SAID ESTERS CONTAINING 1 TO 5 CARBON ATOMS, AND 5 TO 35 WEIGHT PERCENT OF AT LEAST ONE DIALKYL ESTER OF A SATURATED ALIPHATIC DICARBOXYLIC ACID CONTAINING 20 CARBON ATOMS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
95 words
A FIBER-FORMING MODIFIED POLYESTER MELTING AT A TEMPERATURE OF ABOVE 200*C., AND HAVING IMPROVED DYE RECEPTIVITY AND SOLUBILITY CONSISTING OF THE REACTION PRODUCT OF ONE MOLE EQUIVALENT OF A MIXTURE OF 95 TO 65 WEIGHT PERCENT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, ISOPHTHALIC ACID, AND DIALKYL ESTERS OF SAID ACIDS, THE ALKYL RADICALS OF SAID ESTERS CONTAINING 1 TO 5 CARBON ATOMS, AND 5 TO 35 WEIGHT PERCENT OF AT LEAST ONE DIALKYL ESTER OF A SATURATED ALIPHATIC DICARBOXYLIC ACID CONTAINING 20 CARBON ATOMS OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2623033A
Cited
US2744091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |