US3146251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of linear siloxanes
Assignee: Dow Silicones Corp
•
Filing: 1961-07-31
•
Granted: 1964-08-25
•
Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Paul L Brown
- 👤 Hyde James Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:31
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836; C07F7/0838; C07F7/0872; C07F7/0874; C08G77/14; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD WHICH COMPRISES REACTING A HEXAORGANOCYCLOTRISILOXANE OF THE FORMULA (R2SIO)3 WITH A HYDROXYLATED COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER, HYDROCARBON ALCOHOLS OF NO MRE THAN ABOUT EIGHT CARBON ATOMS AND ORGANOSILICON COMPUNDS OF THE FORMULAE R(SIR2O)NH AND HO(SIR2O)NH IN WHICH EACH N IS A POSITIVE INTEGER IN CONTACT WITH A BSIC AMINO COMPOUND HAVING A BASIC DISSOCIATION CONSTANT IN DILUTE SOLUTON IN WATER RANGING FROM 10-7 TO 10-1 AT 25*C., EACH R SUBSTITUENT IN THE ORGANOSILICON COMPONENTS BEING MONOVALENT RADICALS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON RADICALS, HALOGENOAROMATIC HYDROCARBON RADICALS, FLUORINATED HYDROCARBON RADICALS, HYDROCARBON ETHER RADICALS, HALOGENOAROMATIC HYDROCARBON ETHER RADICALS AND FLUORINATED HYDROCARBON ETHER RADICALS.
Claim 2
Independent Claim
109 words
THE METHOD WHICH COMPRISES REACTING A HEXAORGANOCYCLOTRISILOXANE OF THE FORMULA (R2SIO)3 WITH A HYDROXYLATED COMPOUND SELECTED FROM THE GROUP CONSISTING OF WATER, HYDROCARBON ALCOHOLS OF NO MRE THAN ABOUT EIGHT CARBON ATOMS AND ORGANOSILICON COMPUNDS OF THE FORMULAE R(SIR2O)NH AND HO(SIR2O)NH IN WHICH EACH N IS A POSITIVE INTEGER IN CONTACT WITH A BSIC AMINO COMPOUND HAVING A BASIC DISSOCIATION CONSTANT IN DILUTE SOLUTON IN WATER RANGING FROM 10-7 TO 10-1 AT 25*C., EACH R SUBSTITUENT IN THE ORGANOSILICON COMPONENTS BEING MONOVALENT RADICALS SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON RADICALS, HALOGENOAROMATIC HYDROCARBON RADICALS, FLUORINATED HYDROCARBON RADICALS, HYDROCARBON ETHER RADICALS, HALOGENOAROMATIC HYDROCARBON ETHER RADICALS AND FLUORINATED HYDROCARBON ETHER RADICALS.
References Cited (Backward Citations)
CA580100A
Cited
US2416503A
Cited
US2863897A
Cited
US3036035A
Cited
US3046293A
Cited
US3046294A
Cited
US3018270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |