US2983697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris-triorganosilyl-borate containing diorganopolysiloxane elastomers
Assignee: Dow Silicones Corp
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Filing: 1958-06-06
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Granted: 1961-05-09
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Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Eric D Brown
- 👤 Melvin J Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:39
CPC Classifications
C; C08; C08L; C08L83/00; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/18; C08G77/20; C08G77/70; C08K; C08K3/00; C08K3/34; C08K3/36; C08K3/38; C08K5/00; C08K5/55; C08L83/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A COMPOSITION OF MATTER COMPRISING A MIXTURE OF (1) A DIORGANOPOLYSILOXANE HAVING A VISCOSITY OF AT LEAST 10,000 CS. AT 25*C. AND IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS AND WHICH CONTAINS AT LEAST 50 MOL PERCENT DIMETHYLSILOXANE UNITS, (2) FROM .01 TO .16 PARTS BY WEIGHT PER 100 PARTS OF (1) OF BORON ADDED AS A TRIS-TRIORGANOSILYL-BORATE IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF HALOGENATED AND NONHALOGENATED MONOVALENT HYDROCARBON RADICALS AND (3) A REINFORCING SILICA FILLER HAVING A SURFACE AREA OF AT LEAST 50 SQUARE METERS PER GRAM, SAID COMPOSITION BEING CURABLE TO A SOLID COHERENT ELASTOMER HAVING A COMPRESSION SET OF LESS THAN 50% AFTER COMPRESSION FOR 22 HOURS AT 150*C.
Claim 2
Dependent Claim
131 words
A COMPOSITION OF MATTER COMPRISING A MIXTURE OF (1) A DIORGANOPOLYSILOXANE HAVING A VISCOSITY OF AT LEAST 10,000 CS. AT 25*C. AND IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND HALOGENATED MONOVALENT HYDROCARBON RADICALS AND WHICH CONTAINS AT LEAST 50 MOL PERCENT DIMETHYLSILOXANE UNITS, (2) FROM .01 TO .16 PARTS BY WEIGHT PER 100 PARTS OF (1) OF BORON ADDED AS A TRIS-TRIORGANOSILYL-BORATE IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF HALOGENATED AND NONHALOGENATED MONOVALENT HYDROCARBON RADICALS AND (3) A REINFORCING SILICA FILLER HAVING A SURFACE AREA OF AT LEAST 50 SQUARE METERS PER GRAM, SAID COMPOSITION BEING CURABLE TO A SOLID COHERENT ELASTOMER HAVING A COMPRESSION SET OF LESS THAN 50% AFTER COMPRESSION FOR 22 HOURS AT 150*C.
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |