US2795569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylenimine methylol-phosphorus polymers and process of preparation
Assignee: Solvay Solutions UK Ltd
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Filing: 1953-11-18
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Granted: 1957-06-11
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Expires: 1973-11-18
Abstract
No abstract record available.
Inventors
- 👤 Wilson A Reeves
- 👤 John D Guthrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/06; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; D06M15/61; D06M15/667; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A CROSS-LINKED POLYMER CONTAINING RECURRING STRUCTURAL UNITS COMPOSED OF PHOSPHOROUS ATOMS CONTAINED IN RADICALS OF THE GROUP CONSISTING OF TRIMETHYLENE PHOSPHINE OXIDE AND TETRAMETHYLENE PHOSPHOROUS CHLORIDE AND WHICH ARE ATTCHED TO TRIVALENT NITGROGEN ATOMS BY CONNECTING STRUCTURES OF THE GROUP CONSISTING OF-CH2AND -C(R2)C(R2)OCH2- IN WHICH R IS A RADICAL OF THE GROUP CONSISTING OF HYDROGEN, METHYL, AND PHENYL, SIAD POLYMER HAVING BEEN PRODUCED BY REACTING, IN AN AQUEOUS SOLVENT AT A TEMPERATURE FROM ABOUT 0* TO 160* C., AT LEAST ONE PHOSPHOROUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TETRAKIS(HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, TRIS(HYDROXYMETHYL) PHOSPHINE OXIDE, AND PHOSPHOROUS-LINKED METHYLOL-GROUP-CONTAINING DERIVATIVES THEREOF WITH AN ETHYLENIMINE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
107 words
A CROSS-LINKED POLYMER CONTAINING RECURRING STRUCTURAL UNITS COMPOSED OF PHOSPHOROUS ATOMS CONTAINED IN RADICALS OF THE GROUP CONSISTING OF TRIMETHYLENE PHOSPHINE OXIDE AND TETRAMETHYLENE PHOSPHOROUS CHLORIDE AND WHICH ARE ATTCHED TO TRIVALENT NITGROGEN ATOMS BY CONNECTING STRUCTURES OF THE GROUP CONSISTING OF-CH2AND -C(R2)C(R2)OCH2- IN WHICH R IS A RADICAL OF THE GROUP CONSISTING OF HYDROGEN, METHYL, AND PHENYL, SIAD POLYMER HAVING BEEN PRODUCED BY REACTING, IN AN AQUEOUS SOLVENT AT A TEMPERATURE FROM ABOUT 0* TO 160* C., AT LEAST ONE PHOSPHOROUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF TETRAKIS(HYDROXYMETHYL) PHOSPHONIUM CHLORIDE, TRIS(HYDROXYMETHYL) PHOSPHINE OXIDE, AND PHOSPHOROUS-LINKED METHYLOL-GROUP-CONTAINING DERIVATIVES THEREOF WITH AN ETHYLENIMINE COMPOUND OF THE FORMULA
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) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |