Patent US2686768A successfully refreshed from Google Patents.
US2686768A
Expired / Lapsed
US
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Suspensions of polymeric flameproofing compositions containing phosphate and halomethyl groups
Assignee: United States Department of Agriculture
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Filing: 1952-03-28
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Granted: 1954-08-17
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Expires: 1972-03-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John G Frick
- 👤 Jeremiah W Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:09
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS OF PREPARING A FLAMEPROOFING COMPOSITION COMPRISING SUBJECTING AN AQUEOUS EMULSION CONTAINING (1) A METHANE DERIVATIVE OF THE FORMULA CX2Y2 WHEREIN X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND BROMINE, (2) A POLYMERIZABLE, NEUTRAL, UNSATURATED ALCOHOL ESTER OF PHOSPHORIC ACID, AND (3) A WATER-SOLUBLE PEROXIDIC POLYMERIZATION CATALYST AS THE SOLE CATALYST, TO HEATING AT A TEMPERATURE BELOW ABOUT 200* C. AT WHICH THE CATALYST FORMS FREE RADICALS AND UNTIL THE EMULSION BECOMES AN EQUOUS SUSPENSION IN WHICH THE NONAQUEOUS PHASE CONTAINS A DISPERSED POLYMER HAVING PHOSPHATE AND HALOMETHYL GROUPS.
Claim 2
Dependent Claim
109 words
A PROCESS OF PREPARING A FLAMEPROOFING COMPOSITION COMPRISING SUBJECTING AN AQUEOUS EMULSION CONTAINING (1) A METHANE DERIVATIVE OF THE FORMULA CX2Y2 WHEREIN X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND BROMINE, (2) A POLYMERIZABLE, NEUTRAL, UNSATURATED ALCOHOL ESTER OF PHOSPHORIC ACID, AND (3) A WATER-SOLUBLE PEROXIDIC POLYMERIZATION CATALYST AS THE SOLE CATALYST, TO HEATING AT A TEMPERATURE BELOW ABOUT 200* C. AT WHICH THE CATALYST FORMS FREE RADICALS AND UNTIL THE EMULSION BECOMES AN EQUOUS SUSPENSION IN WHICH THE NONAQUEOUS PHASE CONTAINS A DISPERSED POLYMER HAVING PHOSPHATE AND HALOMETHYL GROUPS.
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) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |