Patent US5296624A successfully refreshed from Google Patents.
US5296624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of sterically-hindered organosilanes
Assignee: Evonik Corp
•
Filing: 1992-11-25
•
Granted: 1994-03-22
•
Expires: 2012-11-25
Abstract
Abstract The invention relates to compositions containing compounds of the structure (I): (R.sub.1).sub.a (R.sub.2).sub.b SiX.sub.c (I) wherein R 1 is a neophyl, neohexyl or (CH 3 ) 3 SiCH 2 --group; R 2 is a methyl group; X is a halo group or a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, b is an integer from 0 to 2, and c is an integer from 1 to 3.
Inventors
- 👤 Gerald L. Larson
- 👤 Barry Arkles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:33
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
65 words
A composition comprising a compound of the structure (R.sub.1).sub.a (R.sub.2).sub.b SiX.sub.c wherein R 1 is a neophyl group; R 2 is a methyl group; X is a halo group or a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, b is an integer from 0 to 2, and c is an integer from 1 to 3.
Claim 2
Dependent Claim
65 words
A composition comprising a compound of the structure (R.sub.1).sub.a (R.sub.2).sub.b SiX.sub.c wherein R 1 is a neophyl group; R 2 is a methyl group; X is a halo group or a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, b is an integer from 0 to 2, and c is an integer from 1 to 3.
Claim 3
Dependent Claim
65 words
A composition comprising a compound of the structure (R.sub.1).sub.a (R.sub.2).sub.b SiX.sub.c wherein R 1 is a neophyl group; R 2 is a methyl group; X is a halo group or a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, b is an integer from 0 to 2, and c is an integer from 1 to 3.
Claim 4
Dependent Claim
65 words
A composition comprising a compound of the structure (R.sub.1).sub.a (R.sub.2).sub.b SiX.sub.c wherein R 1 is a neophyl group; R 2 is a methyl group; X is a halo group or a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, b is an integer from 0 to 2, and c is an integer from 1 to 3.
Claim 5
Dependent Claim
48 words
A composition comprising a compound of the structure (R.sub.1).sub.a SiX.sub.c wherein R 1 is a (CH 3 ) 3 SiCH 2 group; X is a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, and c is 2 or 3.
Claim 6
Dependent Claim
48 words
A composition comprising a compound of the structure (R.sub.1).sub.a SiX.sub.c wherein R 1 is a (CH 3 ) 3 SiCH 2 group; X is a saturated, unsaturated, branched, unbranched or cyclic alkoxy group of 1-18 carbon atoms; a is 1 or 2, and c is 2 or 3.
Claim 7
Dependent Claim
21 words
The composition of claim 1 wherein a is 1, b is 2, X is a chloro group and c is 1.
Claim 8
Dependent Claim
21 words
The composition of claim 1 wherein a is 1, b is 1, X is a chloro group and c is 2.
Claim 9
Dependent Claim
21 words
The composition of claim 1 wherein a is 2, b is 0, X is a methoxy group and c is 2.
Claim 10
Dependent Claim
21 words
The composition of claim 1 wherein a is 1, b is 1, X is an ethoxy group and c is 2.
Claim 11
Dependent Claim
21 words
The composition of claim 1 wherein a is 1, b is 1, X is a methoxy group and c is 2.
Claim 12
Dependent Claim
21 words
The composition of claim 2 wherein a is 1, b is 1, X is a chloro group and c is 2.
Claim 13
Dependent Claim
21 words
The composition of claim 2 wherein a is 1, b is 1, X is an ethoxy group and c is 2.
Claim 14
Dependent Claim
21 words
The composition of claim 2 wherein a is 1, b is 0, X is a chloro group and c is 3.
Claim 15
Dependent Claim
21 words
The composition of claim 2 wherein a is 1, b is 0, X is a methoxy group and c is 3.
Claim 16
Dependent Claim
21 words
The composition of claim 2 wherein a is 1, b is 1, X is a methoxy group and c is 2.
Claim 17
Dependent Claim
13 words
The composition of claim 3 wherein a is 1, and c is 3.
Claim 18
Dependent Claim
13 words
The composition of claim 3 wherein a is 2, and c is 2.
Claim 19
Dependent Claim
18 words
The composition of claim 3 wherein a is 2, X is a methoxy group and c is 2.
Claim 20
Dependent Claim
18 words
The composition of claim 3 wherein a is 1, X is an ethoxy group and c is 3.
Claim 21
Dependent Claim
11 words
The composition of claim 1 wherein X is a chloro group.
Claim 22
Dependent Claim
11 words
The composition of claim 2 wherein X is a chloro group.
Claim 23
Dependent Claim
18 words
The composition of claim 3 wherein X is an alkoxy group having from 1 to 4 carbon atoms.
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) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |