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US4612049A
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Corrosion-inhibiting coating compositions
Assignee: HALOX A DIVISION OF HAMMOND GROUP Inc
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Filing: 1985-04-25
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Granted: 1986-09-16
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Expires: 2005-04-25
Abstract
Abstract A corrosion-inhibiting coating composition containing (a) a film-former and (b) as the corrosion inhibitor, an effective amount of an aliphatic or cycloaliphatic mono-, di-, tri- or tetra- carboxylic acid which is substituted in its aliphatic or cycloaliphatic radical by at least one group of the formula I ##STR1## in which X is oxygen, sulfur or NH and each R independently of the others is hydrogen, alkyl, halogenoalkyl, alkoxy, alkylthio, alkylsulfonyl, cycloalkyl, phenyl, alkylphenyl, phenylalkyl, halogen, --CN, --NO 2 , --COOH, --COOalkyl, --OH or a primary, secondary or tertiary amino or carbamoyl group, R not being --NH 2 in the case of a monocarboxylic acid in which X is sulfur, and also base addition salts of these compounds are useful as corrosion inhibitors.
Inventors
- 👤 Godwin Berner
- 👤 William Hoyle
- 👤 James Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/082; C09D5/086; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
125 words
In a corrosion-inhibiting coating composition containing (a) a resinous film-forming binder and (b) a corrosion inhibitor, the improvement comprising, as the corrosion inhibitor (b), an effective amount of an aliphatic or cycloaliphatic mono-, di-, tri- or tetracarboxylic acid which is substituted in its aliphatic or cycloaliphatic radical by at least one group of the formula I ##STR17## in which X is oxygen, sulfur or NH and each R independently of the others is hydrogen, alkyl, halogenoalkyl, alkoxy, alkylthio, alkylsulfonyl, cycloalkyl, phenyl, alkylphenyl, phenylalkyl, halogen, --CN, --NO 2 , --COOH, --COOalkyl, --OH or a primary, secondary or tertiary amino or carbamoyl group, R not being --NH 2 in the case of a monocarboxylic acid in which X is sulfur, and base addition salts of said compounds.
Claim 2
Dependent Claim
125 words
In a corrosion-inhibiting coating composition containing (a) a resinous film-forming binder and (b) a corrosion inhibitor, the improvement comprising, as the corrosion inhibitor (b), an effective amount of an aliphatic or cycloaliphatic mono-, di-, tri- or tetracarboxylic acid which is substituted in its aliphatic or cycloaliphatic radical by at least one group of the formula I ##STR17## in which X is oxygen, sulfur or NH and each R independently of the others is hydrogen, alkyl, halogenoalkyl, alkoxy, alkylthio, alkylsulfonyl, cycloalkyl, phenyl, alkylphenyl, phenylalkyl, halogen, --CN, --NO 2 , --COOH, --COOalkyl, --OH or a primary, secondary or tertiary amino or carbamoyl group, R not being --NH 2 in the case of a monocarboxylic acid in which X is sulfur, and base addition salts of said compounds.
Claim 3
Dependent Claim
14 words
A coating composition according to claim 1, wherein x of the formula is sulfur.
Claim 4
Dependent Claim
36 words
A coating composition according to claim 1, wherein one of the substituents R is hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy or an amino group and the other three Rs are hydrogen.
Claim 5
Dependent Claim
12 words
A coating composition according to claim 1, wherein each R is hydrogen.
Claim 6
Dependent Claim
22 words
A coating composition according to claim 1, in which the component (b) is a monocarboxylic or dicarboxylic acid or a salt thereof.
Claim 7
Dependent Claim
29 words
A coating composition according to claim 1, in which the component (b) contains a group of the formula I which is in the beta-position relative to a carboxyl group.
Claim 8
Dependent Claim
136 words
A coating composition according to claim 1, containing, as the component (b), a compound of the formula II ##STR18## in which X and R are as defined in claim 1, n is zero or 1and R 1 , R 2 , R 3 and R 4 independently of one another are hydrogen, alkyl, hydroxyalkyl, halogenoalkyl, alkoxyalkyl, carboxyalkyl, carboxyl or phenyl or phenylalkyl which is unsubstituted or monosubstituted or disubstituted, or R 1 and R 2 or R 1 and R 3 together are linear alkylene which can be substituted by 1 or 2 --COOH groups, or R 1 and R 2 together are a direct bond, at least one of the substituents R 1 , R 2 , R 3 and R 4 being a carboxyl or carboxyalkyl group, and base addition salts of said compounds.
Claim 9
Dependent Claim
11 words
A coating composition according to claim 7, wherein n is 1.
Claim 10
Dependent Claim
63 words
A coating composition according to claim 7, wherein R 1 , R 2 , R 3 and R 4 are hydrogen, C 1 -C 18 -alkyl, C 2 -C 12 -carboxyalkyl, carboxyl, phenyl or benzyl, or R 1 and R 2 together are trimethylene or tetramethylene which may be substituted by C 1 -C 4 -alkyl or by 1 or 2 carboxyl groups.
Claim 11
Dependent Claim
40 words
A coating composition according to claim 7, wherein R 1 , R 2 , R 3 and R 4 in formula II independently of one another are hydrogen, C 1 -C 4 -alkyl, carboxyl or C 2 -C 6 -carboxyalkyl.
Claim 12
Dependent Claim
34 words
A coating composition according to claim 7, wherein at least two of the substituents R 1 , R 2 , R 3 and R 4 in formula II are a carboxyl or carboxyalkyl group.
Claim 13
Dependent Claim
19 words
A coating composition according to claim 1, in which the component (b) is a compound of the formula ##STR19##
Claim 14
Dependent Claim
19 words
A coating composition according to claim 1, in which the component (b) is a compound of the formula ##STR20##
Claim 15
Dependent Claim
53 words
A coating composition according to claim 1, in which the component (b) is present as the salt of an alkali metal or alkaline earth metal or a metal of group IIB, IIIA or VIII of the periodic system of the elements, as an ammonium salt or as the salt of an organic amine.
Claim 16
Dependent Claim
36 words
A coating composition according to claim 14, in which the component (b) is present as a sodium, potassium, anmonium, calcium, magnesium, zinc or aluminium salt or as the salt of a primary, secondary or tertiary amine.
Claim 17
Dependent Claim
32 words
A coating composition according to claim 1, containing, as the film-former (a), an epoxide resin, polyurethane resin, aminoplast resin, acrylic resin, polyester resin or alkyd resin or a mixture of such resins.
Claim 18
Dependent Claim
20 words
A coating composition according to claim 16, in which the film-former is an epoxide resin based on an aromatic polyol.
Claim 19
Dependent Claim
17 words
A coating composition according to claim 1, wherein the film-former is present as aqueous solution or dispersion.
Claim 20
Dependent Claim
26 words
A coating composition according to claim 1, containing 0.1 to 20% by weight of the component (b), based on the solids content of the coating composition.
Claim 21
Dependent Claim
17 words
A coating composition according to claim 1, containing 0.5 to 5% by weight of the component (b).
Claim 22
Dependent Claim
34 words
A process for preventing corrosion of an iron, steel, copper or aluminum metallic substrate which comprises applying a composition according to claim 1 to the surface of said metal substrate as a primer thereon.
Claim 23
Dependent Claim
15 words
The process of claim 21 wherein said composition is an electrocoating paint for cathodic electrodeposition.
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |