US3753768A
Expired / Lapsed
US
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Aliminum plating process
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1970-10-30
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Granted: 1973-08-21
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Expires: 1990-10-30
Abstract
Abstract Aluminum plating according to which aluminum film formed has no cracks and pin-holes on its surface, a uniform thickness, excellent luster and is strongly bonded to the substrate can be attained by heat treating a substrate covered with aluminum at 400* C the melting point of aluminum for 10 seconds 30 minutes in an inert atmosphere said heat treatment being preceded by or followed by treating of the covered substrate with a surface treating agent comprising active hydrogen-containing compound, oxygen or halogen and thereafter taking out thus treated substrate into the air.
Inventors
- 👤 Y Inoue
- 👤 Y Kondo
- 👤 E Ichiki
- 👤 K Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:16
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/02; C23C16/00; C23C16/56
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
14 words
A substrate plated with aluminum according to the method as claimed in claim 1.
Claim 2
Dependent Claim
30 words
A method according to claim 1, wherein the alkyl aluminum compound is selected from dialkyl aluminum hydride, trialkyl aluminum having alkyl groups of two-20 carbon atoms and a mixture thereof.
Claim 3
Dependent Claim
30 words
A method according to claim 1, wherein the substrate heated to 300*-600* C. was contacted with liquid or vapor of the alkyl aluminum compound to plate the substrate with aluminum.
Claim 4
Dependent Claim
22 words
A method according to claim 1, wherein the heat treatment was carried out at 450*-600* C. for 20 seconds - 15 minutes.
Claim 5
Dependent Claim
35 words
A method according to claim 1, wherein the active-hydrogen containing compound is selected from the group consisting of water, ammonia, primary and secondary amine compounds, sulfides, mono- and poly-hydric alcohols, carboxylic acids, and inorganic acids.
Claim 6
Dependent Claim
25 words
A method according to claim 6, wherein the primary and secondary amine compounds are selected from the group consisting of dimethyl amine, and monobutyl amine.
Claim 7
Dependent Claim
22 words
A method according to claim 6, wherein the sulfide is selected from the group consisting of hydrogen sulfide, ethyl thioalcohol, dodecyl thioalcohol.
Claim 8
Dependent Claim
23 words
A method according to claim 6, wherein the mono- and poly-hydric alcohols are methanol, ethanol, isopropyl-alcohol, butanol, ethylene glycol, propylene glycol and glycerine.
Claim 9
Dependent Claim
30 words
A method according to claim 6, wherein the carboxylic acid is selected from the group consisting of acetic acid, naphthenic acid, stearic acid, adipic acid, maleic acid and phthalic acid.
Claim 10
Dependent Claim
26 words
A method according to claim 6, wherein the inorganic acid is selected from the group consisting of hydrogen chloride, hydrogen fluoride, hydrogen bromide and nitric acid.
Claim 11
Dependent Claim
16 words
A method according to claim 1, wherein the halogen is selected from chlroine, fluorine and bromine.
Claim 12
Dependent Claim
29 words
A method according to claim 1, wherein the substrate plated with aluminum is contacted with a solution containing active hydrogen-containing compound in an amount of 10 - 10,000 ppm.
Claim 13
Dependent Claim
26 words
A method according to claim 1, wherein the substrate plated with aluminum is contacted with an atmosphere of active hydrogen-containing compound of 0.01 - 20 mmHg.
Claim 14
Dependent Claim
24 words
A method according to claim 1, wherein the substrate plated with aluminum is contacted with a solution containing 10 - 10,000 ppm of oxygen.
Claim 15
Dependent Claim
25 words
A method according to claim 1, wherein the substrate plated with aluminum is contacted with a gas atmosphere containing oxygen of 0.01 - 100 mmHg.
Claim 16
Dependent Claim
25 words
A method according to claim 1, wherein the substrate plated with aluminum is contacted with a solution containing 10 - 2,000 ppm of a halogen.
Claim 17
Dependent Claim
26 words
A method according to claim 1, wherein the substrate plated with alUminum is contacted with a gas atmosphere containing a halogen of 0.01 - 20 mmHg.
Claim 18
Dependent Claim
23 words
A method according to claim 6, wherein the substrate plated with aluminum is contacted with the surface active agent at 0* -300* C.
Claim 19
Dependent Claim
90 words
In a method for aluminum plating a substrate by contacting a heat substrate with an alkyl aluminum compound to cause thermal decomposition of said alkyl aluminum compound, an improvement which comprises contacting said substrate covered with aluminum with a small amount of a surface treating agent selected from active hydrogen-containing compound, oxygen and halogens, then heat treating the substrate at a temperature of not lower than 400* C, but below the melting point of aluminum for 10 seconds -30 minutes and thereafter taking out thus treated substrate into the air.
Claim 20
Dependent Claim
30 words
A method according to claim 20, wherein the alkyl aluminum compound is selected from dialkyl aluminum hydride, trialkyl aluminum having alkyl groups of two-20 carbon atoms and a mixture thereof.
Claim 21
Dependent Claim
30 words
A method according to claim 20, wherein the substrate heated to 300*-600* C. was contacted with liquid or vapor of the alkyl aluminum compound to plate the substrate with aluminum.
Claim 22
Dependent Claim
22 words
A method according to claim 20, wherein the heat treatment was carried out at 450*-600* C. for 20 seconds - 15 minutes.
Claim 23
Dependent Claim
35 words
A method according to claim 20, wherein the active-hydrogen containing compound is selected from the group consisting of water, ammonia, primary and secondary amine compounds, sulfides, mono- and poly-hydric alcohols, carboxylic acids, and inorganic acids.
Claim 24
Dependent Claim
25 words
A method according to claim 24, wherein the primary and secondary amine compounds are selected from the group consisting of dimethyl amine, and monobutyl amine.
Claim 25
Dependent Claim
22 words
A method according to claim 24, wherein the sulfide is selected from the group consisting of hydrogen sulfide, ethyl thioalcohol, dodecyl thioalcohol.
Claim 26
Dependent Claim
23 words
A method according to claim 24, wherein the mono- and poly-hydric alcohols are methanol, ethanol, isopropyl-alcohol, butanol, ethylene glycol, propylene glycol and glycerine.
Claim 27
Dependent Claim
30 words
A method according to claim 24, whrein the carobxylic acid is selected from the group consisting of acetic acid, naphthenic acid, stearic acid, adipic acid, maleic acid and phthalic acid.
Claim 28
Dependent Claim
26 words
A method according to claim 1, wherein the inorganic acid is selected from the group consisting of hydrogen chloride, hydrogen fluoride, hydrogen bromide and nitric acid.
Claim 29
Dependent Claim
16 words
A method according to claim 20, wherein the halogen is selected from chlorine, fluorine and bromine.
Claim 30
Dependent Claim
29 words
A method according to claim 30, wherein the substrate plated with aluminum is contacted with a solution containing active hydrogen-containing compound in an amount of 10 - 10,000 ppm.
Claim 31
Dependent Claim
26 words
A method accoding to claim 20, wherein the substrate plated with aluminum is contacted with an atmosphere of active hydrogen-containing compound of 0.01 - 20 mmHg.
Claim 32
Dependent Claim
24 words
A method according to claim 20, wherein the substrate plated with aluminum is contacted with a solution containing 10 - 10,000 ppm of oxygen.
Claim 33
Dependent Claim
25 words
A method according to claim 20, wherein the substrate plated with aluminum is contacted with a gas atmosphere containing oxygen of 0.01 - 100 mmHg.
Claim 34
Dependent Claim
24 words
A method according to claim 20, wherein the substrate plated with aluminum is contacted with a solution containing 10 - 2,000 ppm of halogen.
Claim 35
Dependent Claim
26 words
A method according to claim 30, wherein the substrate plated with aluminum is contacted with a gas atmosphere containing a halogen of 0.01 - 20 mmHg.
Claim 36
Dependent Claim
23 words
A method according to claim 20, wherein the substrate plated with aluminum is contacted with the surface active agent at 0* -300* C.
Claim 37
Dependent Claim
14 words
A substrate plated with aluminum according to the method as claimed in claim 20.
References Cited (Backward Citations)
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US2887984A
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |