US3729436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processable flame resistant abs-pvc blends
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1971-10-06
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Granted: 1973-04-24
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Expires: 1991-10-06
Abstract
Abstract PROCESSABLE BLENDS OF ABS POLYMERS AND PVC POLYMERS IN WEIGHT RATIOS OF 50:50 TO 40:60 ARE RENDERED NONBURNING BY THE INCORPORATION OF AT LEAST 2 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF TOTAL POLYMERS OF CHROMIUM SALTS OF CARBOXYLIC ACIDS CONTAINING FROM 2 TO 20 CARBON ATOMS, SIGNIFICANT FLAME RESISTANCE RESULTS FROM THE INCORPORATION OF SUCH CHROMIUM SALTS IN BLENDS OF ABS AND PVC POLYMERS IN WEIGHT RATIOS AS HIGH AS 60:40.
Inventors
- 👤 W Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L; C08L27/00; C08L27/02; C08L27/04; C08L55/00; C08L55/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |