Patent US4897231A successfully refreshed from Google Patents.
US4897231A
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Anodized aluminum coating
Assignee: CABOS MARINOS DEL SURESTE SA DE CV A Corp ORGANIZED UNDER LAWS OF MEXICO
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Filing: 1989-02-13
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Granted: 1990-01-30
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Expires: 2009-02-13
Abstract
Abstract An anodized aluminum sheet is prepared by applying an aqueous polyurethane 40 percent dispersion coating with a threaded roller having 20-1/32 inch deep triangular threads per inch. The coating is heated by graduated heating from about 125 degrees F. to about 240 degrees F. for about 20 minutes until the material is set and non-tacky. Thereafter, without special storage or handling requirements, the coated side of the anodized aluminum is bonded in a mold under reaction injection molding pressure to a reaction injection molding material.
Inventors
- 👤 Robert S. Scheurer
- 👤 Kendal Hancock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:24
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/24; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/14; B29C44/145; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J5/128; C09; C09J; C09J175/00; C09J175/04; Y; Y10; Y10S; Y10S264/00; Y10S264/83; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
The method of bonding a body of reaction injection molding material onto a metal substrate comprising the steps: applying a coating of aqueous polymer dispersion material onto a surface of said substrate under ambient temperature conditions; heating said coated substrate at an elevated temperature to yield a cured, solid residue which is set and non-tacky; and, contacting the cured coating of said substrate with a body of reaction injection molding material in a mold under reaction injection molding pressure.
Claim 2
Independent Claim
79 words
The method of bonding a body of reaction injection molding material onto a metal substrate comprising the steps: applying a coating of aqueous polymer dispersion material onto a surface of said substrate under ambient temperature conditions; heating said coated substrate at an elevated temperature to yield a cured, solid residue which is set and non-tacky; and, contacting the cured coating of said substrate with a body of reaction injection molding material in a mold under reaction injection molding pressure.
Claim 3
Dependent Claim
29 words
The method as defined in claim 1, including the step of applying said polymer dispersion coating onto said substrate surface in multiple strips which extend substantially along parallel lines.
Claim 4
Dependent Claim
32 words
The method as defined in claim 2, including the step of permitting the aqueous polymer dispersion material in said strips to disperse into an apparently flat coating before performing said heating step.
Claim 5
Dependent Claim
42 words
The method as defined in claim 2, wherein said coating is applied onto said substrate surface in strips having a depth of about 1/32 of an inch, with said strips being applied in a surface density of about 20 strips per inch.
Claim 6
Dependent Claim
50 words
The method as defined in claim 1, wherein the heating step is performed in a plurality of heating stages by increasing the heating temperature from an initial temperature of about 125° F. in a first heating stage to a final temperature of about 240° F. in a final heating stage.
Claim 7
Dependent Claim
73 words
The method as defined in claim 1, wherein said aqueous polymer dispersion material includes a polymer component, a volatile solvent component and water, wherein the polymer component constitutes about 40% by weight of said material, said volatile solvent component constitutes about 10% by weight of said material and the water component constitutes substantially the balance, wherein said heating step is performed until the water component and volatile solvent component have been substantially vaporized.
Claim 8
Dependent Claim
20 words
The method as defined in claim 1, wherein said substrate comprises anodized aluminum and said polymer dispersion material comprises polyurethane.
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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |