US3900683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azidoformates and their use
Assignee: Hercules LLC
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Filing: 1973-12-18
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Granted: 1975-08-19
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Expires: 1993-12-18
Abstract
Abstract Disclosed is a process of improving the adhesion of polyester material to various other materials using the azidoformates of omega-hydroxyalkyl phthalates, their related low molecular weight condensation polymers and their mixtures represented by the general formula WHERE R is an alkylene radical containing 2 to 10 carbon atoms and x is an integer of from about 1 to about 10. In particular, there is disclosed a process of improving the adhesion of polyester tire cord to rubber tire stock using the said azidoformate compounds.
Inventors
- 👤 James N Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:53
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C07; C07C; C07C247/00; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/31504; Y10T428/31536; Y10T428/31786
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
AN ARTICLE OF MANUFACTURE COMPRISING POLYESTER MATERIAL, AT LEAST ONE SURFACE OF WHICH HAS BEEN MODIFIED BY CONTACTING WITH A OMEGA-HYDROXYALKYL PHTHALATE AZIDOFORMATE HAVING THE FORMULA
Claim 2
Dependent Claim
26 words
AN ARTICLE OF MANUFACTURE COMPRISING POLYESTER MATERIAL, AT LEAST ONE SURFACE OF WHICH HAS BEEN MODIFIED BY CONTACTING WITH A OMEGA-HYDROXYALKYL PHTHALATE AZIDOFORMATE HAVING THE FORMULA
Claim 3
Dependent Claim
25 words
A process of modifying polyester matErial which comprises contacting at least one surface of said polyester material with an omega-hydroxyalkyl phthalate azidoformate having the formula
Claim 4
Dependent Claim
25 words
A process of modifying polyester matErial which comprises contacting at least one surface of said polyester material with an omega-hydroxyalkyl phthalate azidoformate having the formula
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |