US3754973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azidoformate-isocyanate compounds and their uses
Assignee: Hercules LLC
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Filing: 1971-08-26
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Granted: 1973-08-28
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Expires: 1991-08-26
Abstract
Abstract WHERE R is a polyvalent organic radical and x and y are integers from 1 to 100. The use of said azidoformate-isocyanate compounds to modify polymers, cross-link polymers, and adhere polymers to substrates selected from siliceous materials, metals and other polymer substrates is disclosed. Also disclosed are rubber tires reinforced with polyester tire cord which has bene modified with an azidoformate-isocyanate compound. Disclosed are azidoformate-isocyanate compounds of the formula
Inventors
- 👤 H Spurlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:08
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C07; C07C; C07C309/00; C08F; C08F8/00; C08F8/34; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/714; C08G18/72; C08G18/77; C08F2810/00; C08F2810/20; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
The process of claim 1 wherein the said substrate has been primed with a material compatible with said substrate having free functional groups selected from amine and hydroxyl groups.
Claim 2
Dependent Claim
16 words
The process of claim 2 wherein said substrate has been primed with an amino silane compound.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the said substrate is glass fibers.
Claim 4
Dependent Claim
37 words
In a process of adhering fibrous polyester reinforcing material to rubber stock, wherein the reinforcing material is embedded in said rubber stock, the improvement of first contacting said reinforcing material with an azidoformate-isocyanate compound having the formula
References Cited (Backward Citations)
US3211752A
Cited
US3369030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |