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US3000839A
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Poly-(aromatic ether) compositions and method of making same
Assignee: Dow Chemical Co
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Filing: 1959-09-28
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Granted: 1961-09-19
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Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 Earl H Rosenbrock
- 👤 James D Doedens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:24
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/121; C08J; C08J9/00; C08J9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD FOR MAKING A FOAMED CONDENSATION PRODUCT. BY HEATING AT A TEMPERATURE BETWEEN ABOUT 50* AND 150*C. FOR A TIME SUFFICIENT TO EVOLVE HYDROGEN HALIDE AND TO FORM A FOAMED, RESINOUS, CONDENSATION PRODUCT, A MEMBER OF THE GROUP CONSISTING OF POLY(HALOMETHYL) DIPHENYL OXIDES HAVING MORE THAN 1 AND UP TO 4 HALOMETHYL SUBSTITUENTS OF THE GROUP CONSISTING OF CHLOROMETHYL AND BROMOMETHYL PER DIPHENYL OXIDE UNIT AND MIXTURES THEREOF CONTAINING FROM ABOUT 1/8 TO ABOUT 2 WEIGHT PERCENT OF ONE OF THE GROUP CONSISTING OF FERROUS PHOSPHATE, FERRIC PHOSPHATE AND MIXTURES THEREOF DISPERSED THEREIN.
Claim 2
Independent Claim
94 words
A METHOD FOR MAKING A FOAMED CONDENSATION PRODUCT. BY HEATING AT A TEMPERATURE BETWEEN ABOUT 50* AND 150*C. FOR A TIME SUFFICIENT TO EVOLVE HYDROGEN HALIDE AND TO FORM A FOAMED, RESINOUS, CONDENSATION PRODUCT, A MEMBER OF THE GROUP CONSISTING OF POLY(HALOMETHYL) DIPHENYL OXIDES HAVING MORE THAN 1 AND UP TO 4 HALOMETHYL SUBSTITUENTS OF THE GROUP CONSISTING OF CHLOROMETHYL AND BROMOMETHYL PER DIPHENYL OXIDE UNIT AND MIXTURES THEREOF CONTAINING FROM ABOUT 1/8 TO ABOUT 2 WEIGHT PERCENT OF ONE OF THE GROUP CONSISTING OF FERROUS PHOSPHATE, FERRIC PHOSPHATE AND MIXTURES THEREOF DISPERSED THEREIN.
References Cited (Backward Citations)
US2911380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |