Patent US3101279A successfully refreshed from Google Patents.
US3101279A
Expired / Lapsed
US
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Flame proofing of cellulosic materials
Assignee: Hooker Chemical Corp
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Filing: 1960-11-21
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Granted: 1963-08-20
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Expires: 1980-11-21
Abstract
No abstract record available.
Inventors
- 👤 George M Wagner
- 👤 Paul E Hoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:27
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/06; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR PREPARING A FLAME RETARDANT CELLULOSIC MATERIAL WHICH COMPRISES IMPREGNATING THE CELLULOSIC MATERIAL WITH AN AQUEOUS RESIN SOLUTION OF TETRAKIS(A-HYDROXYORGANO)PHOSPHONIUM CHLORIDE COMPOUND, A WATERSOLUBLE CYCLIC NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIAZINES AND DIMETHYLOL CYCLIC ALKYLENE UREAS, A STRONG ACID SALT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, AND TERTIARYAMINES, AND A SULFITE COMPOUND CAPABLE OF COMBINING WITH AN ALDEHYDE, WHEREBY POLYMERIZATION OF THE PHOSPHONIUM COMPOUND, THE CYCLIC NITROGEN-CONTAINING COMPOUND AND THE STRONG ACID SALT IS EFFECTED AND THERE IS FORMED AN ALDEHYDE WHICH IS PREVENTED FROM ACELERATING THE POLYMERIZATION BY COMBINATION OF THE ALDEHYDE WITH THE SULFIDE, AND, THEREAFTER DRYING AND CURING THE THUS-IMPREGNATED CELLULOSIC MATERIAL.
Claim 2
Dependent Claim
115 words
A PROCESS FOR PREPARING A FLAME RETARDANT CELLULOSIC MATERIAL WHICH COMPRISES IMPREGNATING THE CELLULOSIC MATERIAL WITH AN AQUEOUS RESIN SOLUTION OF TETRAKIS(A-HYDROXYORGANO)PHOSPHONIUM CHLORIDE COMPOUND, A WATERSOLUBLE CYCLIC NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIAZINES AND DIMETHYLOL CYCLIC ALKYLENE UREAS, A STRONG ACID SALT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, AND TERTIARYAMINES, AND A SULFITE COMPOUND CAPABLE OF COMBINING WITH AN ALDEHYDE, WHEREBY POLYMERIZATION OF THE PHOSPHONIUM COMPOUND, THE CYCLIC NITROGEN-CONTAINING COMPOUND AND THE STRONG ACID SALT IS EFFECTED AND THERE IS FORMED AN ALDEHYDE WHICH IS PREVENTED FROM ACELERATING THE POLYMERIZATION BY COMBINATION OF THE ALDEHYDE WITH THE SULFIDE, AND, THEREAFTER DRYING AND CURING THE THUS-IMPREGNATED CELLULOSIC MATERIAL.
References Cited (Backward Citations)
US2870041A
Cited
US2993746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |