US2846413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic methylol-phosphorus polymers
Assignee: Individual
•
Filing: 1954-04-05
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Granted: 1958-08-05
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Wilson A Reeves
- 👤 John D Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:04
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A FLAME PROOF CONDENSATION POLYMER PRODUCED BY HEATING AT A TEMPERATURE OF ABOUT FROM 70* TO 170*C. A COMPOSITION COMPRISING A PHENOL AND AT LEAST ONE POLYHYDRIC PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, TRIS (HYDROXYMETHYL) PHOSPHINE OXIDE AND PHOSPHORUS-LINKED METHYLOL-GROUP-CONTAINING DERIVATIVES THEREOF OBTAINED BY HEATING A MEMBER OF THE GROUP CONSISTING OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, TRIS (HYDROXYMETHYL) PHOSPHINE OXIDE, AND MIXTURES THEREOF WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA, HYDRAZINE, LYSINE, HYDROCARBON SUBSTITUTED PRIMARY AND SECONDARY AMINES AND AMIDES, AND METHYLOL- SUBSTITUTED AMINES, THE MOLE RATIO OF POLYHYDRIC PHOSPHORUS COMPOUND TO PHENOL IN THE COMPOSITION BEING ABOUT FROM 1:1 TO 1:3, RESPECTIVELY.
Claim 2
Dependent Claim
114 words
A FLAME PROOF CONDENSATION POLYMER PRODUCED BY HEATING AT A TEMPERATURE OF ABOUT FROM 70* TO 170*C. A COMPOSITION COMPRISING A PHENOL AND AT LEAST ONE POLYHYDRIC PHOSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, TRIS (HYDROXYMETHYL) PHOSPHINE OXIDE AND PHOSPHORUS-LINKED METHYLOL-GROUP-CONTAINING DERIVATIVES THEREOF OBTAINED BY HEATING A MEMBER OF THE GROUP CONSISTING OF TETRAKIS (HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, TRIS (HYDROXYMETHYL) PHOSPHINE OXIDE, AND MIXTURES THEREOF WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA, HYDRAZINE, LYSINE, HYDROCARBON SUBSTITUTED PRIMARY AND SECONDARY AMINES AND AMIDES, AND METHYLOL- SUBSTITUTED AMINES, THE MOLE RATIO OF POLYHYDRIC PHOSPHORUS COMPOUND TO PHENOL IN THE COMPOSITION BEING ABOUT FROM 1:1 TO 1:3, RESPECTIVELY.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |