US4724172A
Expired / Lapsed
US
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Thick coating compositions
Assignee: Technology Holding Co II
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Filing: 1986-01-21
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Granted: 1988-02-09
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Expires: 2006-01-21
Abstract
Abstract Corrosion and oxidation resistant coating compositions containing phosphate, chromate or molybdate and atomized aluminum powder.
Inventors
- 👤 Mark F. Mosser
- 👤 Bruce G. McMordie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:54
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; C09; C09D; C09D5/00; C09D5/08; C09D5/10; C09D5/103
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
112 words
A coating composition especially suitable for a machinable aluminum-filled thick coating possessing improved salt corrosion and oxidation resistance and bonding strength, which composition comprises a liquid binder which comprises phosphate ions and ions of the group of chromate or molybdate ions, and an atomized aluminum powder which has a particle size distribution curve possessing one maximum frequency in which the average particle size (as expressed in terms of the median equivalent spherical diameter (ESD)), is greater than at least 15 μm, and at least about 5% by weight of the particles are greater than 44 microns in diameter while at least about 10% by weight are less than 20 microns in diameter.
Claim 2
Dependent Claim
112 words
A coating composition especially suitable for a machinable aluminum-filled thick coating possessing improved salt corrosion and oxidation resistance and bonding strength, which composition comprises a liquid binder which comprises phosphate ions and ions of the group of chromate or molybdate ions, and an atomized aluminum powder which has a particle size distribution curve possessing one maximum frequency in which the average particle size (as expressed in terms of the median equivalent spherical diameter (ESD)), is greater than at least 15 μm, and at least about 5% by weight of the particles are greater than 44 microns in diameter while at least about 10% by weight are less than 20 microns in diameter.
Claim 3
Dependent Claim
27 words
The coating composition of claim 1 wherein about 10% by weight of the particles are in the range of about 8 to about 13 microns in diameter.
Claim 4
Dependent Claim
20 words
The coating composition of claim 2 wherein about 10% by weight of the particles are about 8 microns in diameter.
Claim 5
Dependent Claim
20 words
The coating composition of claim 2 wherein about 10% by weight of the particles are about 12 microns in diameter.
Claim 6
Dependent Claim
20 words
The coating composition of claim 2 wherein about 10% by weight of the particles are about 13 microns in diameter.
Claim 7
Dependent Claim
22 words
The coating composition of claim 1 wherein the average particle diameter is in the range of about 12 to about 24 microns.
Claim 8
Dependent Claim
22 words
The coating compositions of claim 6 wherein the average particle diameter is in the range of about 12 to about 18 microns.
Claim 9
Dependent Claim
22 words
The coating composition of claims 6 wherein the average particle diameter is in the range of about 14 to about 22 microns.
Claim 10
Dependent Claim
22 words
The coating composition of claims 6 wherein the average particle diameter is in the range of about 16 to about 24 microns.
Claim 11
Dependent Claim
15 words
The coating composition of claim 1 wherein the aluminum powder is an spherical atomized powder.
Claim 12
Dependent Claim
14 words
The coating composition of claim 1 wherein the aluminum powder is an air-atomized powder.
Claim 13
Dependent Claim
111 words
A dry coating composition especially suitable for a machinable aluminum-filled thick coating possessing improved salt corrosion, oxidation resistance, and bonding strength, which composition comprises a spray dried binder which comprises phosphate and ions of the group consisting of chromate or molybdate ions and an atomized aluminum powder which has a particle size distribution curve possessing one maximum frequency in which the average particle size (as expressed in terms of the median equivalent spherical diameter (ESD)) is greater than at least 15 μm, and at least about 5% of the particles by weight are greater than 44 microns while at least about 10% by weight are less than 20 microns in diameter.
Claim 14
Dependent Claim
111 words
A dry coating composition especially suitable for a machinable aluminum-filled thick coating possessing improved salt corrosion, oxidation resistance, and bonding strength, which composition comprises a spray dried binder which comprises phosphate and ions of the group consisting of chromate or molybdate ions and an atomized aluminum powder which has a particle size distribution curve possessing one maximum frequency in which the average particle size (as expressed in terms of the median equivalent spherical diameter (ESD)) is greater than at least 15 μm, and at least about 5% of the particles by weight are greater than 44 microns while at least about 10% by weight are less than 20 microns in diameter.
Claim 15
Dependent Claim
28 words
The dry coating composition of claim 12 wherein about 10% by weight of the particles are in the range of about 8 to about 13 microns in diameter.
Claim 16
Dependent Claim
23 words
The dry coating composition of claim 12 wherein the average particle diameter is in the range of about 12 to about 24 microns.
Claim 17
Dependent Claim
16 words
The dry coating composition of claim 12 wherein the aluminum powder is an spherical atomized powder.
Claim 18
Dependent Claim
15 words
The dry coating composition of claim 15 wherein the aluminum powder is an air-atomized powder.
Claim 19
Dependent Claim
13 words
A metal or ceramic part coated with the coating composition of claim 1.
Claim 20
Dependent Claim
20 words
A diesel engine turbo charger inlet housing or an aircraft engine case coated with the coating composition of claim 1.
Claim 21
Dependent Claim
26 words
The method of coating a metal or ceramic part which comprises applying to said part the coating composition of claim 1 and curing said coated part.
References Cited (Backward Citations)
US4548646A
Cited
US4537632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |