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US4100315A
Expired / Lapsed
US
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Process for lacquering metals
Assignee: BASF Corp
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Filing: 1977-04-01
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Granted: 1978-07-11
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Expires: 1997-04-01
Abstract
Abstract The invention provides a process for producing thin-layered adhesive non-porpous films of lacquer on metal surfaces. An aqueous suspension of a solid thermosetting synthetic resin which contains a special alkylphenyloxethylate and/or a special aminococonut fatty acid oxethylate as wetting agent and optionally extenders is used for the purpose. The synthetic resin is in the form of a fine powder with an average granular size from 0.1 to 10 μm. The film is applied by immersion , spraying, coating, rolling or the like, and the curing is preferably effected at elevated temperatures. The use of mixtures of epoxide resins and phenol-formalehyde resins is preferred.
Inventors
- 👤 Horst Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:48
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A process for the production of an adhesive, non-porous film lacquer on a metal surface which comprises applying to a metal surface an aqueous composition suspension comprising a solid thermosetting synthetic resin having an average granular size between 0.1 and 10 μm and a wetting agent selected from the group consisting of an alkylphenyloxethylate in which the oxethylate has a molecular weight of about 1700, and the alkyl moiety contains 8-12 carbon atoms, and an amino coconut fatty acid oxethylate wherein the oxethylate group which has a molecular weight between about 90 and 440 is bonded to the amino group; drying; and curing said composition.
Claim 2
Dependent Claim
105 words
A process for the production of an adhesive, non-porous film lacquer on a metal surface which comprises applying to a metal surface an aqueous composition suspension comprising a solid thermosetting synthetic resin having an average granular size between 0.1 and 10 μm and a wetting agent selected from the group consisting of an alkylphenyloxethylate in which the oxethylate has a molecular weight of about 1700, and the alkyl moiety contains 8-12 carbon atoms, and an amino coconut fatty acid oxethylate wherein the oxethylate group which has a molecular weight between about 90 and 440 is bonded to the amino group; drying; and curing said composition.
Claim 3
Dependent Claim
29 words
The process according to claim 1 wherein said thermosetting synthetic resin is selected from the group consisting of an epoxide resin, phenol-formaldehyde resin, urea-formaldehyde resin and a melamine-formaldehyde resin.
Claim 4
Dependent Claim
22 words
The process according to claim 2 wherein said thermosetting synthetic resin comprises a mixture of an epoxide resin and a phenol-formaldehyde resin.
Claim 5
Dependent Claim
48 words
The process according to claim 3 wherein said thermosetting synthetic resin is a bisphenol-A epoxide resin with an epoxide content of 1.1 to 2 mol/kg and a phenol-formaldehyde resin which can be cured at a temperature above 150° C and which has a melting point of 70° C.
Claim 6
Dependent Claim
18 words
The process according to claim 2 which comprises the addition of a water-soluble hardener to said epoxide resin.
Claim 7
Dependent Claim
18 words
A process according to claim 1, wherein the film of lacquer is produced on a tin plate surface.
Claim 8
Dependent Claim
25 words
The process according to claim 1 werein said thermosetting synthetic resin has an average particle size in the range of between 0.1 and 5 μm.
Claim 9
Dependent Claim
19 words
The process according to claim 1 which comprises the addition of a curing agent to said thermosetting synthetic resin.
References Cited (Backward Citations)
US3787230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |