Claims
- 1. An article comprising a cured silicone substrate bearing a coating composition durably adhered thereto with a continuous primer layer consisting essentially of the composition obtained by drying a primer composition consisting essentially of a primer component and a solvent component, said primer component consisting essentially of an aminoalkyl-substituted trialkoxysilane, a carboxylic acid salt of tin and, optionally, an organic amine compound selected from the group consisting of alkanolamines and polyamines; the weight ratio of aminoalkyl-substituted trialkoxy silane to carboxylic acid salt of tin having a value of from 5/1 to 20/1 and the weight ratio of organic amine compound to aminoalkyl-substituted trialkoxysilane having a value of from 0/1 to 1/1.
- 2. The article according to claim 1 wherein the primer composition consists essentially of from 10 to 15 percent by weight (CH.sub.3 O).sub.3 SiCH.sub.2 CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 NH.sub.2, and the balance is dibutyltin diacetate and i-propanol, wherein the weight ratio of (CH.sub.3 O).sub.3 SiCH.sub.2 CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 NH.sub.2 to dibutyltin diacetate has a value of from 5/1 to 20/1.
- 3. The article according to claim 1 wherein the coating composition comprises a polyurethane.
- 4. The article according to claim 1 wherein the cured silicone substrate comprises an iron filler.
- 5. "A method of applying a continuous layer of a primer composition to a cured silicone substrate, said method comprising
- (I) applying said primer compostion to said substrate, the primer composition consisting essentially of a primer component and a solvent component, said primer component consisting essentially of an aminoalkyl-substituted trialkoxysilane, a carboxylic acid salt of tin and, optionally, an organic amine compound selected from the group consisting of alkanolamines and polyamines; the weight ratio of aminoalkyl-substituted trialkoxy silane to carboxylic acid salt of tin having value of from 5/1 to 20/1 and the weight ratio of organic amine compound to aminoalkyl-substituted trialkoxysilane having a value of from 0/1 to 1/1; and,
- (II) evaporating the solvent from the continuous layer of primer composition to provide a primed silicone substrate."
- 6. A method according to claim 5 wherein the primer composition consists essentially of from 10 to 15 percent by weight (CH.sub.3 O).sub.3 SiCH.sub.2 CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 NH.sub.2, and the balance is dibutyltin diacetate and i-propanol, wherein the weight ratio of (CH.sub.3 O).sub.3 SiCH.sub.2 CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 NH.sub.2 to dibutyltin diacetate has a value of from 5/1 to 20/1.
- 7. A method according to claim 5 further comprising applying a coating composition to the primed substrate.
- 8. A method according to claim 7 wherein the coating composition comprises a polyurethane.
- 9. A method according to claim 5 wherein the cured silicone substrate comprises an iron filler.
Parent Case Info
This is a divisional of copending application(s) Ser. No. 07/283,334 filed on Dec. 12, 1988, now U.S. Pat. No. 5,248,334.
BACKGROUND OF THE INVENTION
The Government has rights in this invention pursuant to Contract No. F33615-83-C-5084 awarded by the Department of the Air Force.
US Referenced Citations (11)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2943832 |
Apr 1982 |
DEX |
63-09767 |
Apr 1988 |
JPX |
2039231 |
Aug 1980 |
GBX |
2056473 |
Mar 1981 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
283334 |
Dec 1988 |
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