US5212017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminopropyltrimethoxy silane primer composition and coated articles made therewith
Assignee: Lockheed Martin Corp
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Filing: 1990-12-14
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Granted: 1993-05-18
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Expires: 2010-12-14
Abstract
Abstract A primer composition of gamma-aminopropyltrimethoxysilane dissolved in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm3)1/2, for example, N,N'-dimethylacetamide, useful for bonding coating compositions to substrates. A superior bond is formed between a condensation cure silicone rubber and a polyimide film substrate when a primer composition of gamma-aminopropyltrimethoxysilane dissolved in N,N'-dimethylacetamide is first applied to the surface of the polyimide film and dried and cured thereon.
Inventors
- 👤 Martin G. Meder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:12
CPC Classifications
C; C09; C09D; C09D4/00; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/043; C08J2379/00; C08J2379/04; C08J2379/08; C08J2483/00; C08J2483/02; H; H05; H05K; H05K3/00; H05K3/38; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31721
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
24 words
A primer composition consisting essentially of gamma-aminopropyltrimethoxysilane dissolved in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm 3 ) 1/2 .
Claim 2
Dependent Claim
24 words
A primer composition consisting essentially of gamma-aminopropyltrimethoxysilane dissolved in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm 3 ) 1/2 .
Claim 3
Dependent Claim
13 words
The primer composition of claim 1 consisting essentially of gamma-aminopropyltrimethoxysilane dissolved in N,N'-dimethylacetamide.
Claim 4
Dependent Claim
30 words
The composition of claim 2 consisting essentially of about 0.1% to about 49% by weight gamma-aminopropyltrimethoxysilane in N,N'-dimethylacetamide, percent by weight being based on the total weight of the composition.
Claim 5
Dependent Claim
30 words
The composition of claim 2 consisting essentially of about 1.0% to about 10% by weight gamma-aminopropyltrimethoxysilane in N,N'-dimethylacetamide, percent by weight being based on the total weight of the composition.
Claim 6
Independent Claim
61 words
A method for priming a surface to improve bonding of a coating material thereto, comprising wetting the surface with a solution of gamma-aminopropyltrimethoxysilane in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm 3 ) 1/2 prior to applying a coating material to the surface and thereafter drying the surface to remove the aprotic solvent and curing the gamma-aminopropyltrimethoxysilane.
Claim 7
Independent Claim
61 words
A method for priming a surface to improve bonding of a coating material thereto, comprising wetting the surface with a solution of gamma-aminopropyltrimethoxysilane in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm 3 ) 1/2 prior to applying a coating material to the surface and thereafter drying the surface to remove the aprotic solvent and curing the gamma-aminopropyltrimethoxysilane.
Claim 8
Dependent Claim
28 words
The method of claim 5 for priming a surface to improve its bonding to a coating material, comprising wetting the surface with a solution of gamma-aminopropyltrimethoxysilane in N,N'-dimethylacetamide.
Claim 9
Dependent Claim
26 words
The method of claim 6 wherein the solution contains about 0.1% to about 49% by weight, based on the total weight of the composition, of gamma-aminopropyltrimethoxysilane.
Claim 10
Dependent Claim
26 words
The method of claim 6 wherein the solution contains about 1.0% to about 10% by weight, based on the total weight of the composition, of gamma-aminopropyltrimethoxysilane.
Claim 11
Dependent Claim
27 words
The method of claim 6, wherein the coating material is a condensation cure silicone, and the silicone is cured after applying the coating material to the surface.
Claim 12
Independent Claim
61 words
A method of bonding condensation cure silicone to a resin substrate comprising applying a solution of gamma-aminopropyltrimethoxysilane in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm 3 ) 1/2 to the resin substrate; drying the resin substrate to remove the aprotic solvent; curing the gamma-aminopropyltrimethoxysilane; applying the condensation cure silicone to the resin substrate; and curing the silicone.
Claim 13
Independent Claim
61 words
A method of bonding condensation cure silicone to a resin substrate comprising applying a solution of gamma-aminopropyltrimethoxysilane in an aprotic solvent having a solubility parameter of about 10.8 (cal/cm 3 ) 1/2 to the resin substrate; drying the resin substrate to remove the aprotic solvent; curing the gamma-aminopropyltrimethoxysilane; applying the condensation cure silicone to the resin substrate; and curing the silicone.
Claim 14
Dependent Claim
26 words
The method of claim 10 of bonding condensation cure silicone to a resin substrate comprising applying a solution of gamma-aminopropyltrimethoxysilane in N,N'-dimethylacetamide to the resin substrate.
Claim 15
Dependent Claim
26 words
The method of claim 11 wherein the solution contains about 0.1% to about 49% by weight based on the total weight of the composition, of gamma-aminopropyltrimethoxysilane.
Claim 16
Dependent Claim
26 words
The method of claim 11 wherein the solution contains about 1% to about 10% by weight based on the total weight of the composition, of gamma-aminopropyltrimethoxysilane.
Claim 17
Dependent Claim
12 words
The method of claim 11, wherein the resin substrate is a polyimide.
Claim 18
Dependent Claim
14 words
The method of claim 11 wherein the resin substrate is an unabraded polyimide film.
Claim 19
Dependent Claim
10 words
A coated substrate formed by the method of claim 11.
Claim 20
Dependent Claim
9 words
An article prepared from the substrate of claim 16.
Claim 21
Dependent Claim
15 words
The article of claim 17 in the form of a substrate for a solar array.
Claim 22
Dependent Claim
15 words
The article of claim 17 in the form of a substrate for a quadrifilar antenna.
Claim 23
Dependent Claim
14 words
The article of claim 17 in the form of a substrate for flexible circuitry.
Claim 24
Dependent Claim
10 words
A coated substrate formed by the method of claim 14.
Claim 25
Dependent Claim
9 words
An article prepared from the substrate of claim 21.
Claim 26
Dependent Claim
15 words
The article of claim 22 in the form of a substrate for a solar array.
Claim 27
Dependent Claim
15 words
The article of claim 22 in the form of a substrate for a quadrifilar antenna.
Claim 28
Dependent Claim
14 words
The article of claim 22 in the form of a substrate for flexible circuitry.
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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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |