US4562278A
Expired / Lapsed
US
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Organosilicon compounds and preparation and use thereof
Assignee: Dow Silicones UK Ltd
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Filing: 1984-10-12
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Granted: 1985-12-31
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Expires: 2004-10-12
Abstract
Abstract Organosilicon compounds which are silanes or siloxanes characterized by the presence of silicon-bonded groups of the formula ##STR1## in which X represents --OH, --OCH 3 or OC 2 H 5 when p=1 or --OH or dialkylamino when p=0, n can be 0 or 1 and p=0 or 1. The compounds are prepared by the reaction of a silane or siloxane containing silicon-bonded hydrogen with a compound ##STR2##
Inventors
- 👤 Michael P. Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:45
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/58; A61K8/585; A61Q; A61Q17/00; A61Q17/04; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
Organosilicon compounds selected from (1) silanes represented by the general formula ##STR11## or (2) siloxanes having at least one unit represented by the general formula ##STR12## any other units present in the said siloxanes being those represented by the general formula ##STR13## in which general formulae R represents a halogen atom, an alkyl group having from 1 to 4 carbon atoms or a phenyl group, an alkoxy group having less than 8 carbon atoms or an alkoxyalkoxy group having less than 8 carbon atoms, R' represents an alkoxy group having less than 8 carbon atoms, a methyl group or a phenyl group, X represents a hydroxyl group, methoxy group or ethoxy group when p=1 or a hydroxyl group or --NQ 2 group, in which each Q is lower alkyl, when p=0, Z represents a hydrogen atom, a monovalent hydrocarbon group or a monovalent halogenated hydrocarbon group, a is 0, 1 or 2, b is 0, 1, 2 or 3, n is 0 or 1 and p is 0 or 1.
Claim 2
Dependent Claim
170 words
Organosilicon compounds selected from (1) silanes represented by the general formula ##STR11## or (2) siloxanes having at least one unit represented by the general formula ##STR12## any other units present in the said siloxanes being those represented by the general formula ##STR13## in which general formulae R represents a halogen atom, an alkyl group having from 1 to 4 carbon atoms or a phenyl group, an alkoxy group having less than 8 carbon atoms or an alkoxyalkoxy group having less than 8 carbon atoms, R' represents an alkoxy group having less than 8 carbon atoms, a methyl group or a phenyl group, X represents a hydroxyl group, methoxy group or ethoxy group when p=1 or a hydroxyl group or --NQ 2 group, in which each Q is lower alkyl, when p=0, Z represents a hydrogen atom, a monovalent hydrocarbon group or a monovalent halogenated hydrocarbon group, a is 0, 1 or 2, b is 0, 1, 2 or 3, n is 0 or 1 and p is 0 or 1.
Claim 3
Dependent Claim
19 words
Organosilicon compounds as claimed in claim 1 wherein p=1 and X represents the methoxy group or the ethoxy group.
Claim 4
Dependent Claim
18 words
Organosilicon compounds as claimed in claim 1 wherein p is 0 and X represents the --NQ 2 group.
Claim 5
Dependent Claim
21 words
Siloxanes as claimed in claim 1 wherein at least 70 percent of the total R' and Z substituents are methyl groups.
Claim 6
Dependent Claim
123 words
A process for the preparation of organosilicon compounds as defined in claim 1 which consists essentially of reacting together (A) a compound represented by the general formula ##STR14## X represents a hydroxyl, methoxy or ethoxy group when p=1 or a hydroxyl group or --NQ 2 group, wherein Q is lower alkyl, when p=1, p is 0 or 1 and n is 0 or 1, and (B) an organosilicon compound which is a silane represented by the general formula R.sub.3 SiH or a siloxane having in the molecule at least one unit of the general formula ##STR15## any other units present in the siloxane being those represented by the general formula ##STR16## wherein R', Z, a and b are as defined in claim 1.
Claim 7
Dependent Claim
19 words
A process as claimed in claim 5 wherein p=1 and X represents the methoxy group or the ethoxy group.
Claim 8
Dependent Claim
16 words
A process as claimed in claim 5 wherein p=0 and X represents the --NQ 2 group.
Claim 9
Dependent Claim
26 words
A process as claimed in claim 5 wherein there is present as a catalyst for the reaction a compound or a complex of a platinum metal.
Claim 10
Dependent Claim
20 words
A sunscreen composition which contains a carrier and an effective amount of an organosilicon compound as claimed in claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |