US4578419A
Expired / Lapsed
US
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Iodine compound activation of autodeposition baths
Assignee: Henkel Corp
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Filing: 1985-03-28
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Granted: 1986-03-25
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Expires: 2005-03-28
Abstract
Abstract Iodine and certain iodine compounds are used as activators (oxidizers) in otherwise conventional autodeposition coating compositions, resulting in improved coating quality. When at least one unsaturated recurring unit polymer is comprised within the latex, corrosion resistance of the coating is also improved.
Inventors
- 👤 Wilbur S. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:51
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/088
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
73 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 inorganic acid, and an oxidizer, all present in amounts effective to deposit said coating, wherein: said latex polymer is a copolymer; 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
73 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 inorganic acid, and an oxidizer, all present in amounts effective to deposit said coating, wherein: said latex polymer is a copolymer; 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
63 words
The composition of claim 2 wherein: said water soluble iodide is at least one of LiI, NaI, KI, RbI, or NH 4 ; 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 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
20 words
The composition of claim 2 wherein said oxidizer is potassium iodate, elemental iodine complexed with potassium iodide, or sodium periodate.
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/l of autodeposition composition, as measured by the elemental iodine.
Claim 13
Dependent Claim
39 words
The composition of claim 2 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/l of autodeposition composition, as measured by the elemental iodine.
Claim 14
Dependent Claim
39 words
The composition of claim 8 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/l of autodeposition composition, as measured by the elemental iodine.
Claim 15
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 16
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 17
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 18
Dependent Claim
20 words
The composition of claim 1 wherein said acid is hydrofluoric acid and the composition pH is more acid than 5.
Claim 19
Dependent Claim
23 words
The composition of claim 17 wherein said hydrofluoric acid is present in an amount of about 0.4 to 5.0 g/l of autodeposition composition.
Claim 20
Dependent Claim
41 words
The composition of claim 1 wherein ferric fluoride is present as an auxiliary oxidizer, said acid is hydrofluoric acid, and said iodine oxidizer is an iodate or periodate and controls the redox potential of the resulting HF/FeF 3 /latex autodeposition composition.
Claim 21
Dependent Claim
41 words
The composition of claim 2 wherein ferric fluoride is present as an auxiliary oxidizer, said acid is hydrofluoric acid, and said iodine oxidizer is an iodate or periodate and controls the redox potential of the resulting HF/FeF 3 /latex autodeposition composition.
Claim 22
Dependent Claim
14 words
The composition of claim 1 wherein said oxidizer is iodic acid and/or periodic acid.
Claim 23
Dependent Claim
14 words
The composition of claim 2 wherein said oxidizer is iodic acid and/or periodic acid.
Claim 24
Dependent Claim
14 words
The composition of claim 4 wherein said oxidizer is iodic acid and/or periodic acid.
Claim 25
Dependent Claim
14 words
The composition of claim 17 wherein said oxidizer is iodic acid and/or periodic acid.
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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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |