Patent US2906768A successfully refreshed from Google Patents.
US2906768A
Expired / Lapsed
US
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Method of reacting halosilanes with diols
Assignee: Dow Silicones Corp
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Filing: 1957-12-05
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Granted: 1959-09-29
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Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Loren A Haluska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:51
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF PREPARING COMPOUNDS OF THE FORMULA RNSI(OR''OH)4-N IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS OR HALOGENATED MONOVALENT HYDROCARBON RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF DIVALENT ALIPHATIC HYDROCARBON RADICALS AND DIVALENT ALIPHATIC HYDROCARBONOXY RADICALS IN WHICH THE OXYGEN IS IN THE FORM OF ETHER LINKAGES, AND N HAS A VALUE FROM 1 TO 3 INCLUSIVE, WHICH COMPRISES ADDING A HALOSILANE OF THE FORMULA RNSIX4-N WHERE X IS A HALOGEN ATOM HAVING AN ATOMIC WEIGHT RANGING FROM 30 TO 130 AND R AND N ARE AS ABOVE DEFINED, BENEATH THE SURFACE OF A DIOL OF THE FOMRULA HOR''OH WHERE R'' IS AS ABOVE DEFINED UNDER SUBATMOSPHERIC PRESSURE WHEREBY THE HX IS REMOVED AS IT IS FORMED, THE RELATIVE AMOUNTS OF HALOSILANE AND DIOL EMPLOYED BEING SUCH THAT THERE IS AT LEAST 2.1 DIOL OH PER SILANE-HALOGEN ATOM.
Claim 2
Independent Claim
146 words
A METHOD OF PREPARING COMPOUNDS OF THE FORMULA RNSI(OR''OH)4-N IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS OR HALOGENATED MONOVALENT HYDROCARBON RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF DIVALENT ALIPHATIC HYDROCARBON RADICALS AND DIVALENT ALIPHATIC HYDROCARBONOXY RADICALS IN WHICH THE OXYGEN IS IN THE FORM OF ETHER LINKAGES, AND N HAS A VALUE FROM 1 TO 3 INCLUSIVE, WHICH COMPRISES ADDING A HALOSILANE OF THE FORMULA RNSIX4-N WHERE X IS A HALOGEN ATOM HAVING AN ATOMIC WEIGHT RANGING FROM 30 TO 130 AND R AND N ARE AS ABOVE DEFINED, BENEATH THE SURFACE OF A DIOL OF THE FOMRULA HOR''OH WHERE R'' IS AS ABOVE DEFINED UNDER SUBATMOSPHERIC PRESSURE WHEREBY THE HX IS REMOVED AS IT IS FORMED, THE RELATIVE AMOUNTS OF HALOSILANE AND DIOL EMPLOYED BEING SUCH THAT THERE IS AT LEAST 2.1 DIOL OH PER SILANE-HALOGEN ATOM.
References Cited (Backward Citations)
DE936038C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |