US5009962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment chemical and bath for forming hydrophilic coatings and method of surface-treating aluminum members
Assignee: Nippon Paint Co Ltd
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Filing: 1990-06-15
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Granted: 1991-04-23
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Expires: 2010-06-15
Abstract
Abstract Hydrophilic coatings on aluminum plates comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of carboxymethylcellulose, and 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, and 25-70 parts by weight of N-methylol acrylamide, which may further contain 1.5-15 parts by weight of polyacrylic acid and 0.6-9 parts by weight (as Zr) of a zirconium compound, per 100 parts by weight of the above indispensable components.
Inventors
- 👤 Katsuyoshi Yamasoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:59
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/83; C09; C09D; C09D5/00; C09D5/08; F; F28; F28F; F28F13/00; F28F13/18; F28F19/00; F28F19/02; F28F2245/00; F28F2245/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
46 words
An aluminum member provided with a hydrophilic coating comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of a carboxymethylcellulose, 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, and 25-70 parts by weight of N-methylol acrylamide.
Claim 2
Dependent Claim
46 words
An aluminum member provided with a hydrophilic coating comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of a carboxymethylcellulose, 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, and 25-70 parts by weight of N-methylol acrylamide.
Claim 3
Dependent Claim
27 words
The aluminum member according to claim 1, wherein said hydrophilic coating is formed on said aluminum member via a chemical treatment layer and/or a resin primer layer.
Claim 4
Dependent Claim
85 words
An aluminum member provided with a hydrophilic coating comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of carboxymethylcellulose, 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, 25-70 parts by weight of N-methylol acrylamide, and further, per 100 parts by weight of (said sodium salt and/or said potassium salt of carboxymethylcellulose+said ammonium salt of carboxymethylcellulose+said N-methylol acrylamide), 1.5-15 parts by weight of polyacrylic acid and 0.6-9 parts by weight (as Zr) of a zirconium compound.
Claim 5
Dependent Claim
85 words
An aluminum member provided with a hydrophilic coating comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of carboxymethylcellulose, 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, 25-70 parts by weight of N-methylol acrylamide, and further, per 100 parts by weight of (said sodium salt and/or said potassium salt of carboxymethylcellulose+said ammonium salt of carboxymethylcellulose+said N-methylol acrylamide), 1.5-15 parts by weight of polyacrylic acid and 0.6-9 parts by weight (as Zr) of a zirconium compound.
Claim 6
Dependent Claim
27 words
The aluminum member according to claim 3, wherein said hydrophilic coating is formed on said aluminum member via a chemical treatment layer and/or a resin primer layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |