Patent US2911325A successfully refreshed from Google Patents.
US2911325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant organic textiles and method of production
Assignee: Individual
•
Filing: 1957-04-24
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Granted: 1959-11-03
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Expires: 1977-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr George L Drake
- 👤 Wilson A Reeves
- 👤 Leon H Chance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:19
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/487; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385; Y10T442/2525; Y10T442/2533; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A PROCESS FOR RENDERIONG A HYDROPHILIC FIBROUS ORGANIC FABRIC FLAME RESISTANT WHICH COMPRISES IMPREGNATING SUCH FABRIC WITH A COMPOSITION WHICH COMPRISES AN AQUEOUS SOLUTION CONTAINING (1) AN AZIRIDINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS (1-AZIRIDINYL) PHOSPHINE OXIDE AND TRIS (1-AZIRIDINYL) PHOSPHINE SULFIDE AND (2) A METHYLOL PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS (HYDROXYMETHYL) PHOSPHINE OXIDE, TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, AND A REACTION PRODUCT OF SAID METHYLOL PHOSPHORUS COMPOUND WITH A COMPOUND CONTAINING AT LEAST ONE TRIVALENT NITROGEN ATOM AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF H- AND -CH2OH ATTACHED TO A TRIVALENT NITROGEN ATOM SAID SOLUTION CONTAINING ABOUT FROM 1 TO 1 1/2 MOLES OF AZIRIDINYL COMPOUND PER MOLE OF PHOSHOROUS COMPOUND DRYING THE IMPREGNATED FABRIC, AND THEN HEATING IT AT A TEMPERATURE OF ABOUT FROM 100* TO 160* C. FOR A PERIOD OF ABOUT FROM 2 TO 10 MINUTES, USING THE LONGER TIME WITH THE LOWER TEMPERATURE TO CAUDE SAID AZIRIDINYL COMPOUND AND SAID PHOSPHOROUS COMPOUND TO REACT WITH EACH OTHER TO FORM A FLAME-RETARDANT POLYMERIC REACTION PRODUCT IN SAID FABRIC.
Claim 2
Dependent Claim
180 words
A PROCESS FOR RENDERIONG A HYDROPHILIC FIBROUS ORGANIC FABRIC FLAME RESISTANT WHICH COMPRISES IMPREGNATING SUCH FABRIC WITH A COMPOSITION WHICH COMPRISES AN AQUEOUS SOLUTION CONTAINING (1) AN AZIRIDINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS (1-AZIRIDINYL) PHOSPHINE OXIDE AND TRIS (1-AZIRIDINYL) PHOSPHINE SULFIDE AND (2) A METHYLOL PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS (HYDROXYMETHYL) PHOSPHINE OXIDE, TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, AND A REACTION PRODUCT OF SAID METHYLOL PHOSPHORUS COMPOUND WITH A COMPOUND CONTAINING AT LEAST ONE TRIVALENT NITROGEN ATOM AND AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF H- AND -CH2OH ATTACHED TO A TRIVALENT NITROGEN ATOM SAID SOLUTION CONTAINING ABOUT FROM 1 TO 1 1/2 MOLES OF AZIRIDINYL COMPOUND PER MOLE OF PHOSHOROUS COMPOUND DRYING THE IMPREGNATED FABRIC, AND THEN HEATING IT AT A TEMPERATURE OF ABOUT FROM 100* TO 160* C. FOR A PERIOD OF ABOUT FROM 2 TO 10 MINUTES, USING THE LONGER TIME WITH THE LOWER TEMPERATURE TO CAUDE SAID AZIRIDINYL COMPOUND AND SAID PHOSPHOROUS COMPOUND TO REACT WITH EACH OTHER TO FORM A FLAME-RETARDANT POLYMERIC REACTION PRODUCT IN SAID FABRIC.
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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |