US5277772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical modification of surfaces using heterocyclic azides
Assignee: EIDP Inc
•
Filing: 1991-04-26
•
Granted: 1994-01-11
•
Expires: 2011-04-26
Abstract
Abstract The invention concerns a method for the chemical modification of a surface based on the reaction of photolytically generated reactive intermediates derived from azido heterocycles with said surface.
Inventors
- 👤 Mark A. Harmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:02
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/252; C; C03; C03C; C03C17/00; C03C17/28; C03C23/00; C03C23/0005; C03C23/0015; C08; C08F; C08F8/00; C08F8/30; D06M13/322; D06M13/35; D06M13/355; D06M23/00; D06M23/005; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54353; G03; G03C; G03C1/00; G03C1/695; G03F; G03F7/00; G03F7/004; G03F7/008; G03F7/012; G03F7/20; G03F7/2041
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
67 words
A method for the chemical modification of a surface which method comprises the photoactivation of an azido heterocyclic compound, containing one or more aromatic rings, in the presence of the surface, to generate a reactive intermediate, followed by the interaction of the photogenerated reactive intermediate with the surface to form a modified surface, wherein said process is carried on in the substantial absence of air and water.
Claim 2
Independent Claim
67 words
A method for the chemical modification of a surface which method comprises the photoactivation of an azido heterocyclic compound, containing one or more aromatic rings, in the presence of the surface, to generate a reactive intermediate, followed by the interaction of the photogenerated reactive intermediate with the surface to form a modified surface, wherein said process is carried on in the substantial absence of air and water.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein the azido heterocyclic compound has an azide directly bound to the hetero-ring.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein the azido heterocyclic compound is selected from 3-azidopyridine, 4-azidopyridine, 3-azidopyrole and 3-azidothiophene.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein the azido heterocyclic compound is a liquid at room temperature.
Claim 6
Dependent Claim
16 words
The method of claim 1 wherein the azido heterocyclic compound is a solid at room temperature.
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein the heterocyclic part of the azido heterocyclic compound has one or more functional groups attached to the ring.
Claim 8
Dependent Claim
22 words
The method of claim 6 wherein the azido heterocyclic compound has no substituents other than hydrogen directly adjacent to the azide group.
Claim 9
Dependent Claim
24 words
The method of claim 1 wherein the surface to be modified is selected from glass, aluminum, polyethylene, polyester, polyimide, a fluoropolymer, and a fiber.
Claim 10
Dependent Claim
21 words
The method of claim 1 wherein the surface to be modified has a --OH, --C--H, --N--H or --C--F on the surface.
Claim 11
Independent Claim
84 words
A method for the chemical modification of surfaces in an image wise fashion which method comprises the photoactivation, in an image wise fashion, of an azido heterocyclic compound, containing one or more aromatic rings, in the presence of the surface to generate a reactive intermediate, followed by the interaction of the photogenerated reactive intermediate with the surface in an image wise fashion to form the image wise fashion modified surface, wherein said process is carried on in the substantial absence of air and water.
Claim 12
Independent Claim
84 words
A method for the chemical modification of surfaces in an image wise fashion which method comprises the photoactivation, in an image wise fashion, of an azido heterocyclic compound, containing one or more aromatic rings, in the presence of the surface to generate a reactive intermediate, followed by the interaction of the photogenerated reactive intermediate with the surface in an image wise fashion to form the image wise fashion modified surface, wherein said process is carried on in the substantial absence of air and water.
Claim 13
Dependent Claim
18 words
The method of claim 10 wherein the azido heterocyclic compound has an azide directly bound to the hetero-ring.
Claim 14
Dependent Claim
18 words
The method of claim 11 wherein the azido heterocyclic compound is selected from 3-azidopyridine, 4-azidopyridine, 3-azidopyrole and 3-azidothiophene.
Claim 15
Dependent Claim
16 words
The method of claim 10 wherein the azido heterocyclic compound is a liquid at room temperature.
Claim 16
Dependent Claim
16 words
The method of claim 10 wherein the azido heterocyclic compound is a solid at room temperature.
Claim 17
Dependent Claim
24 words
The method of claim 10 wherein the heterocyclic part of the azido heterocyclic compound has one or more functional groups attached to the ring.
Claim 18
Dependent Claim
22 words
The method of claim 10 wherein the azido heterocyclic compound has no substituents other than hydrogen directly adjacent to the azide group.
Claim 19
Dependent Claim
24 words
The method of claim 10 wherein the surface to be modified is selected from glass, aluminum, polyethylene, polyester, polyimide, a fluoropolymer, and a fiber.
Claim 20
Dependent Claim
21 words
The method of claim 10 wherein the surface to be modified has a --OH, --C--H, --N--H or --C--F on the surface.
Claim 21
Independent Claim
58 words
A method for the chemical modification of a surface comprising the photoactivation of an azido heterocyclic compound, containing one or more aromatic rings, in the presence of the surface to be modified so as to cause the azido heterocyclic compound to modify the surface, wherein said process is carried out in the substantial absence of air and water.
Claim 22
Independent Claim
58 words
A method for the chemical modification of a surface comprising the photoactivation of an azido heterocyclic compound, containing one or more aromatic rings, in the presence of the surface to be modified so as to cause the azido heterocyclic compound to modify the surface, wherein said process is carried out in the substantial absence of air and water.
Claim 23
Dependent Claim
14 words
The method of claim 19 wherein the surface to be modified is a fluoropolymer.
Claim 24
Dependent Claim
14 words
The method of claim 1 wherein the surface to be modified is a fluoropolymer.
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) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |