Patent US3274157A successfully refreshed from Google Patents.
US3274157A
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Condensation products of alkoxymethylated diaromatic ethers
Assignee: Dow Chemical Co
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Filing: 1965-04-01
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Granted: 1966-09-20
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Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 James D Doedens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SOLID POLYMERIZED COMPOSITION OF MATTER OBTAINED BY HEATING, IN THE PRESENCE OF A CONDENSATION CATALYST, AN ALKOXYMETHYLATED DIARYL ETHER HAVING THE GENERAL FORMULA: (((R'')N-PHENYL)-O-),(R-O-CH2-)M-BENZENE WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, PROPYL AND BUTYL RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKOXY AND HALOGEN RADICALS WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, M IS A NUMBER FROM 1 TO 4 REPRESENTING AN AVERAGE ALKOXYMETHYL FUNCTIONALITY AND N IS AN INTEGER FROM 0 TO 2.
Claim 2
Dependent Claim
86 words
A SOLID POLYMERIZED COMPOSITION OF MATTER OBTAINED BY HEATING, IN THE PRESENCE OF A CONDENSATION CATALYST, AN ALKOXYMETHYLATED DIARYL ETHER HAVING THE GENERAL FORMULA: (((R'')N-PHENYL)-O-),(R-O-CH2-)M-BENZENE WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, PROPYL AND BUTYL RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKOXY AND HALOGEN RADICALS WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, M IS A NUMBER FROM 1 TO 4 REPRESENTING AN AVERAGE ALKOXYMETHYL FUNCTIONALITY AND N IS AN INTEGER FROM 0 TO 2.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |