US4116710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic particulate
Assignee: Dow Chemical Co
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Filing: 1975-02-05
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Granted: 1978-09-26
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Expires: 1995-02-05
Abstract
Abstract A method of providing a particulate suitable for use in, for example, coating compositions, such as paints. The described method comprises depositing a metal on a substrate by, for example, electroless or vapor deposition methods. The metal deposit is then removed from substrate to provide a plurality of distinct metal platelets suitable for combination with a carrier and use in a coating composition.
Inventors
- 👤 Henrik R. Heikel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/18; B22; B22F; B22F1/00; B22F1/06; B22F1/068; C; C09; C09C; C09C1/00; C09C1/62; C09C1/622; C09C1/64; B22F2998/00; B22F2998/10; B22F2999/00; C01; C01P; C01P2004/00; C01P2004/10; C01P2004/20; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
84 words
A method comprising providing a substrate with a coating on at least a portion of the substrate, the coating consisting essentially of an about 200 to about 600 angstrom thick vapor deposited metal layer, dissolving the substrate to separate at least a portion of the coating from the substrate to provide a plurality of generally separate irregularly shaped metal platelets with a largest dimension up to about 5000 microns, and introducing the metal platelets into a carrier suitable for use in a coating composition.
Claim 2
Independent Claim
84 words
A method comprising providing a substrate with a coating on at least a portion of the substrate, the coating consisting essentially of an about 200 to about 600 angstrom thick vapor deposited metal layer, dissolving the substrate to separate at least a portion of the coating from the substrate to provide a plurality of generally separate irregularly shaped metal platelets with a largest dimension up to about 5000 microns, and introducing the metal platelets into a carrier suitable for use in a coating composition.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the metal coating is aluminum.
Claim 4
Dependent Claim
23 words
The method of claim 2, including removing substantially all of the substrate material from the platelets before introducing the platelets into a carrier.
Claim 5
Dependent Claim
83 words
A composition comprising a carrier suitable for use in a coating composition and metallic particulate formed by providing a substrate with a coating on at least a portion of the substrate, the coating consisting essentially of an about 200 to about 600 angstrom thick vapor deposited metal layer, dissolving the substrate to separate at least a portion of the coating from the substrate to provide a plurality of generally separate irregularly shaped metal platelets with a largest dimension up to about 5000 microns.
Claim 6
Dependent Claim
83 words
A composition comprising a carrier suitable for use in a coating composition and metallic particulate formed by providing a substrate with a coating on at least a portion of the substrate, the coating consisting essentially of an about 200 to about 600 angstrom thick vapor deposited metal layer, dissolving the substrate to separate at least a portion of the coating from the substrate to provide a plurality of generally separate irregularly shaped metal platelets with a largest dimension up to about 5000 microns.
Claim 7
Dependent Claim
82 words
A composition comprising a carrier for use in a coating composition and metallic particulate formed by providing a substrate with a vapor deposited coating on at least a portion of the substrate, the coating consisting essentially of an about 200 to about 600 angstrom thick aluminum layer, separating at least a portion of the coating from the substrate by dissolving the substrate to provide a plurality of generally separate irregularly shaped aluminum platelets with a largest dimension up to about 5000 microns.
Claim 8
Dependent Claim
82 words
A composition comprising a carrier for use in a coating composition and metallic particulate formed by providing a substrate with a vapor deposited coating on at least a portion of the substrate, the coating consisting essentially of an about 200 to about 600 angstrom thick aluminum layer, separating at least a portion of the coating from the substrate by dissolving the substrate to provide a plurality of generally separate irregularly shaped aluminum platelets with a largest dimension up to about 5000 microns.
Claim 9
Dependent Claim
25 words
The composition of claim 5 containing up to about 10 weight percent of aluminum flakes with thicknesses of from about 200 to about 600 angstroms.
Claim 10
Dependent Claim
14 words
The composition of claim 6 containing up to about 5 weight percent aluminum flake.
Claim 11
Dependent Claim
16 words
the composition of claim 6 containing from about 1/4 to about 3/4 weight percent aluminum flake.
Claim 12
Dependent Claim
8 words
the composition of claim 8 including a binder.
Claim 13
Dependent Claim
8 words
A coating containing the composition of claim 4.
Claim 14
Dependent Claim
8 words
A coating containing the composition of claim 6.
Claim 15
Dependent Claim
24 words
A coating with a mirror-like secondary surface consisting essentially of a color pigment free mixture of the composition of claim 8 and a binder.
Claim 16
Dependent Claim
25 words
The coating of claim 12 wherein the aluminum flakes have an average largest dimension within the range of from about 100 to about 200 microns.
Claim 17
Dependent Claim
22 words
The coating of claim 13 containing aluminum flakes previously cleaned to remove substantially all of the original substrate material from the composition.
Claim 18
Dependent Claim
50 words
The composition of claim 4 wherein the metal is selected from the group consisting of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, In, Cd, Ag, Pd, Rh, Ru, Mo, Nb, Zr, Y, La, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, and Pb.
Claim 19
Dependent Claim
21 words
The composition of claim 4 wherein the metal is selected from the group consisting of Mg, Al, Cu, Au, and Ag.
Claim 20
Dependent Claim
35 words
A light bulb with an exterior surface thereof coated with a composition consisting essentially of the composition of claim 16 and a binder, the coating having a reflective surface in contact with the light bulb.
Claim 21
Dependent Claim
35 words
A light bulb with an exterior surface thereof coated with a composition consisting essentially of the composition of claim 15 and a binder, the coating having a reflective surface in contact with the light bulb.
Claim 22
Dependent Claim
35 words
A light bulb with an exterior surface thereof coated with a composition consisting essentially of the composition of claim 5 and a binder, the coating having a reflective surface in contact with the light bulb.
Claim 23
Dependent Claim
41 words
A light bulb with an exterior surface thereof coated with a composition consisting essentially of a color pigment free mixture of the composition of claim 5 and a binder, the coating having a mirror-like surface in contact with the light bulb.
Claim 24
Dependent Claim
40 words
A light bulb with a surface thereof coated with a composition consisting essentially of a color pigment free mixture of the composition of claim 8 and a binder, the coating having a mirror-like surface in contact with the light bulb.
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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) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |