US4555294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic composition adapted for use in bonding a high temperature resistant polymeric material to an aluminum base substrate
Assignee: Clevite Industries Inc
•
Filing: 1984-04-03
•
Granted: 1985-11-26
•
Expires: 2004-04-03
Abstract
Abstract An inorganic composition adapted for use in bonding a high temperature resistant polymeric material to an aluminum base substrate is provided. The composition is obtained by reacting a first inorganic compound containing chromium and oxygen with a second inorganic compound containing at least one element selected from the group consisting essentially of calcium, barium and strontium to form a reaction product containing chromium, oxygen and at least one element selected from the group essentially consisting of calcium, barium and strontium. A method of bonding a high temperature resistant polymeric material to an aluminum base substrate using the above composition is also provided.
Inventors
- 👤 Kenneth J. Adams
- 👤 David E. Dyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/16; B32B15/04; B32B15/08; B32B15/20; B32B5/00; B32B5/16; C; C09; C09D; C09D5/00; C09D5/18; B32B2309/00; B32B2309/02; B32B2309/022; B32B2309/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
196 words
A method of bonding a high temperature resistant polymeric material to an aluminum base substrate is provided which comprises: providing a reaction product which is obtained by reacting chromium sesquioxide with a second inorganic compound containing at least one element selected from the group consisting essentially of calcium, barium and strontium to form a reaction product chromite XCr 2 O 4 wherein X is selected from the group essentially consisting of calcium, barium and strontium; bringing the so-obtained reaction product into contact with the surface of the aluminum base substrate which is to be coated with the polymeric material; bringing at least one high temperature polymeric material selected from the group consisting essentially of polysulfone, polyethersulfone, polyamide-imide, polyetheretherketone, polyetherimide, polyphenylene sulfide, polyphenylsulfone and polymeric compounds containing them into contact with the surface of the substrate which is to be coated; heating the so-applied polymeric material and reaction product to a temperature sufficient to cause the polymeric material to flow and cover that portion of the substrate which is to be coated therewith; and cooling the heated cooling to a temperature sufficient to cause the high temperature resistant polymeric material to become adherently bonded to the substrate.
Claim 2
Independent Claim
196 words
A method of bonding a high temperature resistant polymeric material to an aluminum base substrate is provided which comprises: providing a reaction product which is obtained by reacting chromium sesquioxide with a second inorganic compound containing at least one element selected from the group consisting essentially of calcium, barium and strontium to form a reaction product chromite XCr 2 O 4 wherein X is selected from the group essentially consisting of calcium, barium and strontium; bringing the so-obtained reaction product into contact with the surface of the aluminum base substrate which is to be coated with the polymeric material; bringing at least one high temperature polymeric material selected from the group consisting essentially of polysulfone, polyethersulfone, polyamide-imide, polyetheretherketone, polyetherimide, polyphenylene sulfide, polyphenylsulfone and polymeric compounds containing them into contact with the surface of the substrate which is to be coated; heating the so-applied polymeric material and reaction product to a temperature sufficient to cause the polymeric material to flow and cover that portion of the substrate which is to be coated therewith; and cooling the heated cooling to a temperature sufficient to cause the high temperature resistant polymeric material to become adherently bonded to the substrate.
Claim 3
Dependent Claim
32 words
The method of claim 1 wherein said second inorganic compound is selected from the group consisting essentially of an oxide, a hydroxide, a carbonate or a bicarbonate of calcium, barium, or strontium.
Claim 4
Dependent Claim
33 words
The method of claim 1 wherein said reaction product and polymeric material are in the form of particles and completely mixed together prior to being brought into contact with the aluminum base substrate.
Claim 5
Dependent Claim
36 words
The method of claim 3 wherein said particles of said reaction product are generally in the range of from about 0.5 to about 1.5 microns prior to being brought into contact with the aluminum base substrate.
Claim 6
Dependent Claim
24 words
The method of claim 4 wherein said particles of said polymeric material have a diameter generally ranging from about 10 to about 20 microns.
Claim 7
Dependent Claim
20 words
The method of claim 5 wherein said mixed particles are applied to said substrate by a thermal compression molding procedure.
Claim 8
Dependent Claim
17 words
The method of claim 5 wherein said mixed particles are applied to said substrate by injection molding.
References Cited (Backward Citations)
US2127202A
Cited
US2231024A
Cited
US2271362A
Cited
US2294334A
Cited
US2400271A
Cited
US2400272A
Cited
US2387528A
Cited
US2493934A
Cited
US2562118A
Cited
US2838419A
Cited
US2846342A
Cited
US2898250A
Cited
US3160509A
Cited
US3039898A
Cited
US3403970A
Cited
US3793055A
Cited
US3801379A
Cited
US3871894A
Cited
US3846170A
Cited
US4193645A
Cited
US4189194A
Cited
US4138526A
Cited
DE2739576A1
Cited
US4361620A
Cited
US4421795A
Cited
JPS5834178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |