US4645846A
Expired / Lapsed
US
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Silane compositions
Assignee: PCR Inc
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Filing: 1985-04-12
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Granted: 1987-02-24
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Expires: 2005-04-12
Abstract
Abstract There is provided a corrosion inhibiting alkoxy silane characterized by an alkyleneamino group attached to silicon through a Si--C linkage, a carbonyl or thiocarbonyl group attached to an amine group and a terminal group which may be saturated or unsaturated aliphatic or cycloaliphatic group containing 6 to 20 carbon atoms, a saturated or unsaturated aminoaliphatic or amino cycloaliphatic group containing 6-20 carbon atoms; NHNH 2 ; NH(CH 2 ) n N(R) 2 ; or a ##STR1## group where R 2 is a saturated or unsaturated alkyl or haloalkyl group containing 3 to 20 carbon atoms. The invention also provides a method of inhibiting corrosion of metal surfaces by applying a coating containing or consisting of a novel silane as above described.
Inventors
- 👤 Ralph J. DePasquale
- 👤 James M. Evans
- 👤 Paul W. Kremer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:25
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
114 words
A silane having the general formula: ##STR6## wherein A is a hydrolyzable group, R 1 is selected from alkyl groups containing 1 to 3 carbon atoms, X is a chalcogen, m is 0 to 3, n is 0 to 3, y is 2 to 4, and Z is selected from saturated or unsaturated aliphatic or cycloaliphatic groups containing from 6 to 20 carbon atoms; NH-saturated aliphatic or cycloaliphatic groups containing 6 to 20 carbon atoms; NH-unsaturated aliphatic or cycloaliphatic groups containing 6-20 carbon atoms, --NH--NH 2 , NH--(CH 2 ) n N(R) 2 , and ##STR7## where R 2 is a saturated or unsaturated alkyl or haloalkyl group containing 1 to 20 carbon atoms.
Claim 2
Dependent Claim
114 words
A silane having the general formula: ##STR6## wherein A is a hydrolyzable group, R 1 is selected from alkyl groups containing 1 to 3 carbon atoms, X is a chalcogen, m is 0 to 3, n is 0 to 3, y is 2 to 4, and Z is selected from saturated or unsaturated aliphatic or cycloaliphatic groups containing from 6 to 20 carbon atoms; NH-saturated aliphatic or cycloaliphatic groups containing 6 to 20 carbon atoms; NH-unsaturated aliphatic or cycloaliphatic groups containing 6-20 carbon atoms, --NH--NH 2 , NH--(CH 2 ) n N(R) 2 , and ##STR7## where R 2 is a saturated or unsaturated alkyl or haloalkyl group containing 1 to 20 carbon atoms.
Claim 3
Dependent Claim
11 words
A silane as defined in claim 1 wherein m is 0.
Claim 4
Dependent Claim
11 words
A silane as defined in claim 1 wherein m is 3.
Claim 5
Dependent Claim
11 words
A silane as defined in claim 1 wherein y is 3.
Claim 6
Dependent Claim
11 words
A silane as defined in claim 1 wherein n is 0.
Claim 7
Dependent Claim
11 words
A silane as defined in claim 1 wherein X is oxygen.
Claim 8
Dependent Claim
11 words
A silane as defined in claim 1 wherein X is sulfur.
Claim 9
Dependent Claim
18 words
A silane as defined in claim 1 wherein m is 0, y is 3 and n is 0.
Claim 10
Dependent Claim
18 words
A silane as defined in claim 1 wherein m is 1, y is 3 and n is 0.
Claim 11
Dependent Claim
21 words
A silane as defined in claim 1 wherein m is 0, y is 3, n is 0 and X is oxygen.
Claim 12
Dependent Claim
11 words
A silane as defined in claim 10 which is N-octadecyl-N'-(3-trimethoxysilyl)propyl urea.
Claim 13
Dependent Claim
11 words
A silane as defined in claim 10 which is N-octadecyl-N'-(3-triethoxysilyl)propyl urea.
Claim 14
Dependent Claim
11 words
A silane as defined in claim 9 which is N-heptadecyl-N'-(3-dimethoxymethylsilyl)propyl urea.
Claim 15
Dependent Claim
11 words
A silane as defined in claim 9 which is N-heptadecylene-N'-(3-dimethoxymethylsilyl)propyl urea.
Claim 16
Dependent Claim
18 words
A silane as defined in claim 1 which is the tall oil fatty acid amide of 3-(2-aminoethylamino)propyl trimethoxysilane.
Claim 17
Dependent Claim
18 words
A silane as defined in claim 1 which is the tall oil thio fatty acid amide of 3-(2-aminoethylamino)propyltriethoxysilane.
Claim 18
Dependent Claim
18 words
A silane as defined in claim 10 which is the tall oil fatty acid amide of 3-aminopropyltriethoxy silane.
Claim 19
Dependent Claim
10 words
A silane as defined in claim 1 which is 4-(3-triethoxysilylpropyl)semicarbazide.
Claim 20
Dependent Claim
10 words
A silane as defined in claim 1 which is N-(3-dimethylaminopropyl)-N'-(3-triethoxysilylpropyl)urea.
Claim 21
Dependent Claim
10 words
A silane as defined in claim 1 which is N-(3-dimethylaminopropyl)-N'-(3-trimethoxysilylpropyl)urea.
Claim 22
Dependent Claim
10 words
A silane as defined in claim 1 which is N-(3-triethoxysilylpropyl)-beta-oxobutyramide.
Claim 23
Dependent Claim
11 words
A silane as defined in claim 1 which is N-octadecyl-N'-2-(3-trimethoxysilylpropylamino)-ethyl urea.
Claim 24
Independent Claim
133 words
The method of improving the resistance of iron or steel to corrosion which comprises applying to the surface thereof a silane having the general formula: ##STR8## wherein A is a hydrolyzable group, R 1 is selected from alkyl groups containing 1 to 3 carbon atoms, X is a chalcogen, m is 0 to 3, n is 0 to 3, y is 2 to 4, and Z is selected from saturated or unsaturated aliphatic or cycloaliphatic groups containing from 6 to 20 carbon atoms; NH-saturated aliphatic or cycloaliphatic groups containing 6 to 20 carbon atoms; NH-unsaturated aliphatic or cycloaliphatic groups containing 6-20 carbon atoms, --NH--NH 2 , NH--(CH 2 ) n N(R) 2 , and ##STR9## where R 2 is a saturated or unsaturated alkyl or haloalkyl group containing 1 to 20 carbon atoms.
Claim 25
Independent Claim
133 words
The method of improving the resistance of iron or steel to corrosion which comprises applying to the surface thereof a silane having the general formula: ##STR8## wherein A is a hydrolyzable group, R 1 is selected from alkyl groups containing 1 to 3 carbon atoms, X is a chalcogen, m is 0 to 3, n is 0 to 3, y is 2 to 4, and Z is selected from saturated or unsaturated aliphatic or cycloaliphatic groups containing from 6 to 20 carbon atoms; NH-saturated aliphatic or cycloaliphatic groups containing 6 to 20 carbon atoms; NH-unsaturated aliphatic or cycloaliphatic groups containing 6-20 carbon atoms, --NH--NH 2 , NH--(CH 2 ) n N(R) 2 , and ##STR9## where R 2 is a saturated or unsaturated alkyl or haloalkyl group containing 1 to 20 carbon atoms.
Claim 26
Dependent Claim
11 words
The method of claim 23 wherein the silane is N-octadecyl-N'-(3-triethoxysilyl)propyl urea.
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |