US3650856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Red phosphorus castable smoke producing composition
Assignee: Boeing North American Inc
•
Filing: 1969-10-06
•
Granted: 1972-03-21
•
Expires: 1989-10-06
Abstract
Abstract A castable pyrotechnic white smoke composition which comprises red phosphorous, an alkali metal nitrate, magnesium and a suitable castable polymeric binder.
Inventors
- 👤 Glen D Artz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:41
CPC Classifications
C; C06; C06B; C06B39/00; C06D; C06D3/00; Y; Y10; Y10S; Y10S149/00; Y10S149/117
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
17 words
The composition of claim 1 in which said alkali metal nitrate is potassium nitrate or sodium nitrate.
Claim 2
Dependent Claim
20 words
The composition of claim 1 in which the castable polymeric binder is a castable polysulphide, polysulphide-epoxy mixture, polyester or polybutadiene.
Claim 3
Dependent Claim
16 words
The composition of claim 3 in which the polybutadiene is a hydroxy or carboxy terminated polybutadiene.
Claim 4
Dependent Claim
22 words
The composition of claim 3 in which the polyester is prepared by the reaction of a dibasic acid with a dihydric alcohol.
Claim 5
Dependent Claim
20 words
The composition of claim 5 in which the dibasic acid is adipic acid and the dihydric alcohol is diethylene glycol.
Claim 6
Dependent Claim
18 words
The composition of claim 1 in which the castable polymeric binder includes a suitable plasticizer and cross-linking agent.
Claim 7
Dependent Claim
30 words
The composition of claim 7 in which the cross-linking agent is present in an amount of from 10 to 20 weight percent based on a total castable polymeric binder content.
Claim 8
Dependent Claim
14 words
The composition of claim 7 in which the plasticizer is trimethylolethanetrinitrate, triacetin, or bis-dinitropropylacrylate-formal.
Claim 9
Dependent Claim
13 words
The composition of claim 7 in which the cross-linking agent is polymethylene polyphenylisocyanate.
Claim 10
Dependent Claim
20 words
The composition of claim 7 in which the composition includes from 0.001 to 0.01 weight percent of ferric acetylacetonate catalyst.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |