US3285993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary amino polyamides as dyeability improvers for polyester resins
Assignee: Teijin Ltd
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Filing: 1963-11-19
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Granted: 1966-11-15
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Expires: 1983-11-19
Abstract
No abstract record available.
Inventors
- 👤 Inamoto Yoshiaki
- 👤 Shima Takeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:23
CPC Classifications
C; C08; C08L; C08L77/00; C08G; C08G69/00; C08G69/02; C08G69/26; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR PRODUCING MODIFIED POLYESTERS WHICH COMPRISES MIXING IN MOLTEN STATE A LINEAR POLYSTER WITH AT LEAST ONE POLYAMIDE, THE DICARBOXYLIC ACID COMPONENT OF SAID POLYESTER BEING MAINLY COMPOSED OF TEREPHTHALIC ACID, THE GLYCOL COMPONENT OF SAID POLYESTER BEING MAINLY COMPOSED OF AN ALKYLENE GLYCOL, THE DIAMINE COMPONENT OF THE POLYAMIDE BEING MAINLY COMPOSED OF M-XYLYLENEDIAMINE AND THE DICARBOXYLIC ACID COMPONENT OF THE POLYAMIDE BEING MAINLY COMPOSED OF AT LEAST ONE ALIPHATIC TERTIARY AMINODICARBOXYLIC ACID IN WHICH THE BASIC AMINO GROUP IS SEPARATED FROM EITHER OF THE CARBOXYL GROUPS BY AT LEAST THREE CARBON ATOMS.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PRODUCING MODIFIED POLYESTERS WHICH COMPRISES MIXING IN MOLTEN STATE A LINEAR POLYSTER WITH AT LEAST ONE POLYAMIDE, THE DICARBOXYLIC ACID COMPONENT OF SAID POLYESTER BEING MAINLY COMPOSED OF TEREPHTHALIC ACID, THE GLYCOL COMPONENT OF SAID POLYESTER BEING MAINLY COMPOSED OF AN ALKYLENE GLYCOL, THE DIAMINE COMPONENT OF THE POLYAMIDE BEING MAINLY COMPOSED OF M-XYLYLENEDIAMINE AND THE DICARBOXYLIC ACID COMPONENT OF THE POLYAMIDE BEING MAINLY COMPOSED OF AT LEAST ONE ALIPHATIC TERTIARY AMINODICARBOXYLIC ACID IN WHICH THE BASIC AMINO GROUP IS SEPARATED FROM EITHER OF THE CARBOXYL GROUPS BY AT LEAST THREE CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |