Patent US4447495A successfully refreshed from Google Patents.
US4447495A
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Adhesive process
Assignee: Hercules LLC
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Filing: 1983-03-08
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Granted: 1984-05-08
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Expires: 2003-03-08
Abstract
Abstract In an improved adhesive process the amount of azidosilane coupling agent necessary to adhere a siliceous material to a polymer is reduced. The siliceous material, the azidosilane coupling agent and the polymer are admixed with an organosilicon compound and then heated at a temperature and for a time sufficient to decompose the azide groups of the azidosilane coupling agent. The reduction in the amount of azidosilane coupling agent is accomplished without adversely affecting the adhesion of the polymer to the siliceous material. Also disclosed are the products thus produced.
Inventors
- 👤 Edward J. Engle, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:50
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/29; Y10T428/2911; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2996; Y10T428/2998; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
118 words
In a process for adhering a polymer to a siliceous material by admixing the siliceous material, an azidosilane coupling agent and the polymer and then heating the admixture at a temperature and for a time sufficient to decompose the azide groups, the improvement of adding an organosilicon compound having the formula ##STR6## where n is an integer from 0 to 4 and R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, are selected from the group consisting of lower alkyl, aralkyl, or lower alkoxides to, and then admixing with, the admixture prior to decomposing the azide groups of the azidosilane coupling agent.
Claim 2
Dependent Claim
118 words
In a process for adhering a polymer to a siliceous material by admixing the siliceous material, an azidosilane coupling agent and the polymer and then heating the admixture at a temperature and for a time sufficient to decompose the azide groups, the improvement of adding an organosilicon compound having the formula ##STR6## where n is an integer from 0 to 4 and R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, are selected from the group consisting of lower alkyl, aralkyl, or lower alkoxides to, and then admixing with, the admixture prior to decomposing the azide groups of the azidosilane coupling agent.
Claim 3
Dependent Claim
59 words
The process of claim 1 wherein the amount of azidosilane coupling agent in the admixture is from about 0.025% to about 1%, based on the weight of the siliceous material, and the amount of organosilicon compound in the admixture is from about 1 to about 5 times the amount of azidosilane used, based on the weight of the azidosilane.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the organosilicon compound is ethyl silicate.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the organosilicon compound is n-propyl silicate.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein the organisilicon compound is 2-(trimethoxysilyl)ethylbenzene.
Claim 7
Dependent Claim
19 words
The process of claim 1 where the siliceous material is chosen from the group consisting of mica and glass.
Claim 8
Dependent Claim
97 words
A polymer coated siliceous material formed by admixing the siliceous material, an azidosilane coupling agent, the polymer, and an organosilicon compound having the formula ##STR7## where n is an integer from 0 to 4 and where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, are selected from the group consisting of lower alkyl, aralkyl, or lower akloxides and then heating the admixture at a temperature and for a time sufficient to decompose the azide group of the azidosilane coupling agent.
Claim 9
Dependent Claim
97 words
A polymer coated siliceous material formed by admixing the siliceous material, an azidosilane coupling agent, the polymer, and an organosilicon compound having the formula ##STR7## where n is an integer from 0 to 4 and where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be the same or different, are selected from the group consisting of lower alkyl, aralkyl, or lower akloxides and then heating the admixture at a temperature and for a time sufficient to decompose the azide group of the azidosilane coupling agent.
Claim 10
Dependent Claim
15 words
The polymer coated siliceous material of claim 7 wherein the organosilicon compound is ethyl silicate.
Claim 11
Dependent Claim
15 words
The polymer coated siliceous material of claim 7 wherein the organosilicon compound is n-propyl silicate.
Claim 12
Dependent Claim
14 words
The polymer coated siliceous material of claim 7 wherein the organosilicon compound is 2-(trimethoxysilyl)ethylbenzene.
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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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |