US3899370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing coated and age hardened aluminum or aluminum-based alloy molded materials
Assignee: Riken Light Metal Industry Co Ltd
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Filing: 1973-01-17
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Granted: 1975-08-12
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Expires: 1993-01-17
Abstract
Abstract Molded materials of aluminum or aluminum-based alloy provided with painted film having a particularly high cohesion are produced in a continuous treatment from extrusion molding to finishing by subjecting an extrusion molded aluminum or aluminumbased alloy keeping a supersaturated condition, which is not subjected to a heat treatment for an age hardening, to usual pretreatments to be effected prior to painting, applying the thus treated molded material with a paint and then heating said molded material provided with a painted film at a temperature of 205 + OR - 5*C for 50-120 minutes to effect an age hardening treatment of the molded material and to bake the painted film.
Inventors
- 👤 Toshiro Takahashi
- 👤 Toshihiro Nagano
- 👤 Yasuo Aoshima
- 👤 Matsuo Suzuki
- 👤 Shozo Suzuki
- 👤 Teruo Asahina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
201 words
IN A METHOD FRO PRODUCING PAINTED MOLDED ALUMNOUS MATERIAL IN WHICH AN ALUMINOUS MATERIAL IS SUBJECTED TO EXTRUSION MOLDING, THE MOLDED MATERIAL IS SUBJECTED TO AN ARTIFICIAL AGE HARDENING TREATMENT, TO CONVENTIONAL PRE-TREATMENTS OF DEGREASING, NEUTRALIZATION, WASHING WITH WATER AND A SURFACEROUGHENING TREATMENT, AND TO A TREATMENT FOR FORMING A BASE LAYER FOR PAINTING BY (1) ANODIC OXIDATION (2) TREATMENT IN BOILING WATER OR AN AQUEOUS SOLUTION OF A CHEMICAL AGENT FOR FORMING A BOEHMITE LAYER OR (3) SPRAYING WITH STEAM, THE THUS TREATED MOLDED MATERIAL IS COATED WITH A THERMOSETTING PAINT AND THE PAINTED MOLDED MATERIAL IS HEATED TO CURE THE PAINTED FILM, THE IMPROVEMENT WHICH COMPRISES, (A) SUBJECTING THE EXTRUSSION MOLDED ALUMINOUS MATERIAL IN A SUPER-SATURATED IONDITION AND HAVING A HARDNESS OF LESS THAN 65 KG/MM2 AND A TENSILE STRENGTH OF LESS THAN 15 KG/MM2 TO CONVENTIONAL PRETREATMENTS WITHOUT FIRST EFFECTING ARTIFICIAL AGE HARDENING (B) SUBJECTING THE PRE-TREATED MATERIAL TO A TREATMENT FOR FORMING A BASE LAYER FOR PAINTING (C) COATING THE MATERIAL WITH A FILM OF A THERMOSETTING PAINT AND (D) HEAT TREATING THE PAINTED MATERIAL AT A TEMPERATURE OF 205$5*C. FOR 50-120 MINUTES TO EFFECT SAID AGE HARDENING REATMENT SIMULTANEOUSLY WITH THE CURING OF THE PAINTED FILM.
Claim 2
Dependent Claim
201 words
IN A METHOD FRO PRODUCING PAINTED MOLDED ALUMNOUS MATERIAL IN WHICH AN ALUMINOUS MATERIAL IS SUBJECTED TO EXTRUSION MOLDING, THE MOLDED MATERIAL IS SUBJECTED TO AN ARTIFICIAL AGE HARDENING TREATMENT, TO CONVENTIONAL PRE-TREATMENTS OF DEGREASING, NEUTRALIZATION, WASHING WITH WATER AND A SURFACEROUGHENING TREATMENT, AND TO A TREATMENT FOR FORMING A BASE LAYER FOR PAINTING BY (1) ANODIC OXIDATION (2) TREATMENT IN BOILING WATER OR AN AQUEOUS SOLUTION OF A CHEMICAL AGENT FOR FORMING A BOEHMITE LAYER OR (3) SPRAYING WITH STEAM, THE THUS TREATED MOLDED MATERIAL IS COATED WITH A THERMOSETTING PAINT AND THE PAINTED MOLDED MATERIAL IS HEATED TO CURE THE PAINTED FILM, THE IMPROVEMENT WHICH COMPRISES, (A) SUBJECTING THE EXTRUSSION MOLDED ALUMINOUS MATERIAL IN A SUPER-SATURATED IONDITION AND HAVING A HARDNESS OF LESS THAN 65 KG/MM2 AND A TENSILE STRENGTH OF LESS THAN 15 KG/MM2 TO CONVENTIONAL PRETREATMENTS WITHOUT FIRST EFFECTING ARTIFICIAL AGE HARDENING (B) SUBJECTING THE PRE-TREATED MATERIAL TO A TREATMENT FOR FORMING A BASE LAYER FOR PAINTING (C) COATING THE MATERIAL WITH A FILM OF A THERMOSETTING PAINT AND (D) HEAT TREATING THE PAINTED MATERIAL AT A TEMPERATURE OF 205$5*C. FOR 50-120 MINUTES TO EFFECT SAID AGE HARDENING REATMENT SIMULTANEOUSLY WITH THE CURING OF THE PAINTED FILM.
Claim 3
Dependent Claim
72 words
The method as claimed in claim 1, wherein said paint is an aqueous solution of a water soluble thermosetting resin paint containing an organic amine and said molded material coated with said paint containing water and the organic amine is heated to effect an age hardening treatment on the molded material and at the same time to form a boehmite base layer on the aluminous material and to cure the painted film.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |