US2813839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing foams from self-frothing silicon resins
Assignee: Ellis Foster Co
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Filing: 1951-06-13
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Granted: 1957-11-19
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Expires: 1971-06-13
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
- 👤 Spialter Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF PRODUCING AN ORGANO SILICON OXIDEE FROTH WHICH COMPRISES FROTHING BY HEATING IN LIQUID CONDITION AT A FROTH PRODUCING TEMPERATURE A SELF-FROTHING SILANE HAVING AT LEAST TWO -O(CO)1R GROUPS ATTACHED THROUGH THE -O OXYGEN OF THE RADICAL DIRECTLY TO SILICON WHERE R IS A MONOVALENT HYDROCARBON RADICAL AND IS FROM 0 TO 1, CAPABLE OF FROTHING IN THE ABSENCE OF ANY ADDED FROTHING AGENT WHILE IN THE LIQUID STATE AT ELEVATED TEMPERATURE OF FROM ABOUT 250*C TO 550*C AND CAPABLE OF CURING BY HEAT, AND CURING THE LIQUID FROTH THE SELF-FROTHING SILANE BEING SELECTED FROM THE GROUP CONSISTING OF N-BUTYL-TRIACETOXY SILANE, A MIXTURE OF N-BUTYLTRIACETOXY SILANE AND TETRAKIS (BETA CHLOROPROPOXYLSILANE, METHYL DI-BETA-CHLOROETHOXY SILANE, DIMETHYL DIETHOXY SILANE,AND METHYL TRIACETOXY SILANE.
Claim 2
Independent Claim
121 words
THE METHOD OF PRODUCING AN ORGANO SILICON OXIDEE FROTH WHICH COMPRISES FROTHING BY HEATING IN LIQUID CONDITION AT A FROTH PRODUCING TEMPERATURE A SELF-FROTHING SILANE HAVING AT LEAST TWO -O(CO)1R GROUPS ATTACHED THROUGH THE -O OXYGEN OF THE RADICAL DIRECTLY TO SILICON WHERE R IS A MONOVALENT HYDROCARBON RADICAL AND IS FROM 0 TO 1, CAPABLE OF FROTHING IN THE ABSENCE OF ANY ADDED FROTHING AGENT WHILE IN THE LIQUID STATE AT ELEVATED TEMPERATURE OF FROM ABOUT 250*C TO 550*C AND CAPABLE OF CURING BY HEAT, AND CURING THE LIQUID FROTH THE SELF-FROTHING SILANE BEING SELECTED FROM THE GROUP CONSISTING OF N-BUTYL-TRIACETOXY SILANE, A MIXTURE OF N-BUTYLTRIACETOXY SILANE AND TETRAKIS (BETA CHLOROPROPOXYLSILANE, METHYL DI-BETA-CHLOROETHOXY SILANE, DIMETHYL DIETHOXY SILANE,AND METHYL TRIACETOXY SILANE.
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |