Patent US2898361A successfully refreshed from Google Patents.
US2898361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organodisiloxane esters
Assignee: Dow Silicones Corp
•
Filing: 1958-06-26
•
Granted: 1959-08-04
•
Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Garrett H Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:16
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0889; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR THE PREPARATION OF ORGANODISILOXANE ESTERS WHICH COMPRISES REACTING (I)A COMPOUND OF THE FORMULA (R2R''SIOCH2CHZ(CH2)NR2SI)2O, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, AND PHENYL RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL RADICALS, Z IS SELECTED FROM THE GROUP CONSISTING OF H AND A METHYL RADICAL, AND N IS AN INTEGER OF FROM 1 TO 2 INCLUSIVE, WITH (II) A MONOCARBOXYLIC ACID; BY CONTACTING (I) AND (II) IN A LIQUID PHASE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR THE PREPARATION OF ORGANODISILOXANE ESTERS WHICH COMPRISES REACTING (I)A COMPOUND OF THE FORMULA (R2R''SIOCH2CHZ(CH2)NR2SI)2O, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF METHYL, ETHYL, AND PHENYL RADICALS, R'' IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND ETHYL RADICALS, Z IS SELECTED FROM THE GROUP CONSISTING OF H AND A METHYL RADICAL, AND N IS AN INTEGER OF FROM 1 TO 2 INCLUSIVE, WITH (II) A MONOCARBOXYLIC ACID; BY CONTACTING (I) AND (II) IN A LIQUID PHASE.
References Cited (Backward Citations)
US2770633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |