US3177176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adding silica prior to condensation of boron-polysiloxane
Assignee: General Electric Co
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Filing: 1961-10-02
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Granted: 1965-04-06
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Reginald J Boot
- 👤 Zuba George P De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:40
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/14; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/398; C08K; C08K3/00; C08K3/16; C08K3/34; C08K3/36; Y; Y10; Y10S; Y10S273/00; Y10S273/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR MAKING PLASTIC ORGANOPOLYSILOXANE COMPOSITIONS THAT EXHIBIT A HIGH DEGREE OF ELASTICITY UNDER SUDDENLY APPLIED STRESS COMPRISING (1) FORMING A MIXTURE BY UNIFORMLY DISPERSING TOGETHER BY WEIGHT 100 PARTS OF A POLY(METHYLSILOXANE), HAVING THE FORMULA (H3C)A-SI-O((4-A)/2) 1 TO 10 PARTS OF A BORON-OXYGEN-COMPOUND SELECTED FROM THE CLASS CONSISTING OF A BORON OXIDE, AND A BORATE ESTER, 3 TO 30 PARTS OF A SILICA FILLER, AND 0.05 TO 2 PERCENT BASED ON THE WEIGHT OF THE RESULTING MIXTURE OF FERRIC CHLORIDE, (2) HEATING THE MIXTURE OF (1) AT A TEMPERATURE BETWEEN 90* TO 250*C. UNTIL THERE IS A SUDDEN AND SUBSTANTIAL INCREASE IN THE VISCOSITY OF THE MIXTURE, (3) ALLOWING THE PRODUCT OF (2) TO COOL TO ATMOSPHERIC TEMPERATURES, WHERE A CAN VARY FROM 1.85 TO 2.1.
Claim 2
Dependent Claim
128 words
A PROCESS FOR MAKING PLASTIC ORGANOPOLYSILOXANE COMPOSITIONS THAT EXHIBIT A HIGH DEGREE OF ELASTICITY UNDER SUDDENLY APPLIED STRESS COMPRISING (1) FORMING A MIXTURE BY UNIFORMLY DISPERSING TOGETHER BY WEIGHT 100 PARTS OF A POLY(METHYLSILOXANE), HAVING THE FORMULA (H3C)A-SI-O((4-A)/2) 1 TO 10 PARTS OF A BORON-OXYGEN-COMPOUND SELECTED FROM THE CLASS CONSISTING OF A BORON OXIDE, AND A BORATE ESTER, 3 TO 30 PARTS OF A SILICA FILLER, AND 0.05 TO 2 PERCENT BASED ON THE WEIGHT OF THE RESULTING MIXTURE OF FERRIC CHLORIDE, (2) HEATING THE MIXTURE OF (1) AT A TEMPERATURE BETWEEN 90* TO 250*C. UNTIL THERE IS A SUDDEN AND SUBSTANTIAL INCREASE IN THE VISCOSITY OF THE MIXTURE, (3) ALLOWING THE PRODUCT OF (2) TO COOL TO ATMOSPHERIC TEMPERATURES, WHERE A CAN VARY FROM 1.85 TO 2.1.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |