US3228903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for controlling the hydrolysis of an organo-silane to form a stable dispersion
Assignee: Owens Corning Canada Inc
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Filing: 1963-08-16
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Granted: 1966-01-11
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 William J Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:38
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/20; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD OF PRODUCING A COMPOSITION FOR TREATING GLASS FIBRES COMPRISING CONTACTING A HYDROLYSABLE UNSATURATED ORGANO-SILANE WITH AN ALKALINE REAGENT IN AN AQUEOUS MEDIUM AT PH OF FROM 7 TO 8, THEREBY EFFECTING ALKALINE HYFROLYSIS OF SAID ORGANO-SILANE TO PRODUCE AN ORGANOSILANOL AND INDUCING POLYMERIZATION OF SAID ORGANO-SILANOL TO YIELD A COLLOIDAL AQUEOUS SUSPENSION OF A WATER-INSOLUBLE UNSATURATED ORGANO-SILANE POLYMER AND THEN ARRESTING SAID HYDROLYSIS AND SAID POLYMERIZATION BY ADDING AN ACID REAGENT TO SAID COLLOIDAL AQUEOUS SUSPENSION TO ADJUST THE PH TO BETWEEN 3 TO 6 PRIOR TO PRECIPITATION OF AN ORGANO-SILANE POLYMER FROM SAID SUSPENSION AND PRIOR TO COMPLETE POLYMERIZATION OF SAID ORGANO-SILANOL WHEREBY TO FORM A STABILIZED COLLOIDAL AQUEOUS SUSPENSION OF SAID ORGANO-SILANE POLYMER.
Claim 2
Independent Claim
117 words
A METHOD OF PRODUCING A COMPOSITION FOR TREATING GLASS FIBRES COMPRISING CONTACTING A HYDROLYSABLE UNSATURATED ORGANO-SILANE WITH AN ALKALINE REAGENT IN AN AQUEOUS MEDIUM AT PH OF FROM 7 TO 8, THEREBY EFFECTING ALKALINE HYFROLYSIS OF SAID ORGANO-SILANE TO PRODUCE AN ORGANOSILANOL AND INDUCING POLYMERIZATION OF SAID ORGANO-SILANOL TO YIELD A COLLOIDAL AQUEOUS SUSPENSION OF A WATER-INSOLUBLE UNSATURATED ORGANO-SILANE POLYMER AND THEN ARRESTING SAID HYDROLYSIS AND SAID POLYMERIZATION BY ADDING AN ACID REAGENT TO SAID COLLOIDAL AQUEOUS SUSPENSION TO ADJUST THE PH TO BETWEEN 3 TO 6 PRIOR TO PRECIPITATION OF AN ORGANO-SILANE POLYMER FROM SAID SUSPENSION AND PRIOR TO COMPLETE POLYMERIZATION OF SAID ORGANO-SILANOL WHEREBY TO FORM A STABILIZED COLLOIDAL AQUEOUS SUSPENSION OF SAID ORGANO-SILANE POLYMER.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |