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US4554305A
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Hydrogen peroxide-free and hydrofluoric acid-free autodeposition baths
Assignee: Henkel Corp
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Filing: 1985-03-28
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Granted: 1985-11-19
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Expires: 2005-03-28
Abstract
Abstract Autodeposition unsaturated latex baths which are hydrogen peroxide-free (using iodine or certain iodine salts or free acids as the oxidizer) and which are hydrofluoric acid-free (using, preferably, acetic acid) afford coatings which can incorporate silicate-containing pigments, fillers, and other ingredients.
Inventors
- 👤 Wilbur S. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:27
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/088
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
95 words
An aqueous acidic autodeposition composition for depositing a resinous coating on an iron- and/or zinc-containing metal substrate, comprising a resinous latex, an acid, and an oxidizer, all present in amounts effective to deposit said coating, wherein: said latex polymer is a copolymer; said acid is at least one of acetic, acrylic, adipic, chloroacetic, citric, dichloroacetic, diglycolic, fumaric, gallic, itaconic, lactic, malic, malonic, succinic, or tartaric and said oxidizer is elemental iodine complexed with a water soluble iodide, an iodate salt or free acid, a periodate salt or free acid, or any mixture of the foregoing.
Claim 2
Dependent Claim
95 words
An aqueous acidic autodeposition composition for depositing a resinous coating on an iron- and/or zinc-containing metal substrate, comprising a resinous latex, an acid, and an oxidizer, all present in amounts effective to deposit said coating, wherein: said latex polymer is a copolymer; said acid is at least one of acetic, acrylic, adipic, chloroacetic, citric, dichloroacetic, diglycolic, fumaric, gallic, itaconic, lactic, malic, malonic, succinic, or tartaric and said oxidizer is elemental iodine complexed with a water soluble iodide, an iodate salt or free acid, a periodate salt or free acid, or any mixture of the foregoing.
Claim 3
Dependent Claim
31 words
The composition of claim 1 wherein said latex comprises at least one polymer whose recurring backbone unit and/or whose recurring branch chain has at least one carbon to carbon double bond.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein said latex comprises at least one butadiene or isoprene polymer.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein said latex comprises at least a butadiene/styrene copolymer.
Claim 6
Dependent Claim
63 words
The composition of claim 1 wherein: said water soluble iodide is at least one of LiI, NaI, KI, RbI or NH 4 I; said iodate is at least one of KIO 3 , NaIO 3 , NH 4 IO 3 , or HIO 3 ; and said periodate is at least one of KIO 4 , NaIO 4 , or HIO 4 .
Claim 7
Dependent Claim
60 words
The composition of claim 2 wherein: said water soluble iodide is at least one of LiI, NaI, KI, RbI, or NH 4 I; said iodate is at least one of KIO 3 , NaIO 3 , NH 4 IO 3 , or HIO 3 ; and said periodate is at least one of NaIO 4 , or HIO 4 .
Claim 8
Dependent Claim
35 words
The composition of claim 2 wherein said oxidizer is: iodine complexed with sodium iodide or potassium iodide; sodium or potassium iodate; iodic acid; sodium or potassium periodate; periodic acid; or any mixture of the foregoing.
Claim 9
Dependent Claim
35 words
The composition of claim 3 wherein said oxidizer is: iodine complexed with sodium iodide or potassium iodide; sodium or potassium iodate; iodic acid; sodium or potassium periodate; periodic acid; or any mixture of the foregoing.
Claim 10
Dependent Claim
35 words
The composition of claim 4 wherein said oxidizer is: iodine complexed with sodium iodide or potassium iodide; sodium or potassium iodate; iodic acid; sodium or potassium periodate; periodic acid; or any mixture of the foregoing.
Claim 11
Dependent Claim
14 words
The composition of claim 2 wherein said oxidizer is iodic acid or periodic acid.
Claim 12
Dependent Claim
39 words
The composition of claim 1 wherein said oxidizer is elemental iodine complexed with a water soluble iodide salt, and is present in an amount of about 4.4 to 5.6 g/1 of autodeposition composition, as measured by the elemental iodine.
Claim 13
Dependent Claim
36 words
The composition of claim 1 wherein said oxidizer is either an iodate or a periodate, and is present in an amount of about 1.4 to 2.5 g/l of autodeposition composition, as measured by the iodine-containing ions.
Claim 14
Dependent Claim
36 words
The composition of claim 2 wherein said oxidizer is either an iodate or a periodate, and is present in an amount of about 1.4 to 2.5 g/l of autodeposition composition, as measured by the iodine-containing ions.
Claim 15
Dependent Claim
36 words
The composition of claim 8 wherein said oxidizer is either an iodate or a periodate, and is present in an amount of about 1.4 to 2.5 g/l of autodeposition composition, as measured by the iodine-containing ions.
Claim 16
Dependent Claim
25 words
The composition of claim 1 wherein said acid is present in an amount sufficient to make the pH of said composition more acidic than 5.
Claim 17
Dependent Claim
26 words
The composition of claim 1 wherein said acid is present in an amount sufficient to make the pH of said composition between about 1.6 and 3.8.
Claim 18
Dependent Claim
18 words
The composition of claim 1 wherein said acid is acetic, citric, fumaric, diglycolic, maleic, or any mixture thereof.
Claim 19
Dependent Claim
18 words
The composition of claim 2 wherein said acid is acetic, citric, fumaric, diglycolic, maleic, or any mixture thereof.
Claim 20
Dependent Claim
18 words
The composition of claim 3 wherein said acid is acetic, citric, fumaric, diglycolic, maleic, or any mixture thereof.
Claim 21
Dependent Claim
18 words
The composition of claim 4 wherein said acid is acetic, citric, fumaric, diglycolic, maleic, or any mixture thereof.
Claim 22
Dependent Claim
21 words
The composition of claim 1 wherein said acid is acetic acid present in an amount of about 15 to 25 g/l.
Claim 23
Dependent Claim
23 words
The composition of claim 7 wherein said acid is acetic acid and is present in an amount of about 15 to 25 g/l.
Claim 24
Dependent Claim
23 words
The composition of claim 10 wherein said acid is acetic acid and is present in an amount of about 15 to 25 g/l.
Claim 25
Dependent Claim
23 words
The composition of claim 13 wherein said acid is acetic acid and is present in an amount of about 15 to 25 g/l.
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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) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |