US4294617A
Expired / Lapsed
US
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Compositions and methods for the denaturation of water-base paints
Assignee: Air Industrie SA
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Filing: 1980-04-21
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Granted: 1981-10-13
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Expires: 2000-04-21
Abstract
Abstract The invention relates to denaturation compositions for waterbase paints. These compositions are constituted by aqueous solutions containing effective amounts of at least one sulphate of iron (II), of magnesium or of manganese. To control the precipitation conditions of the denatured paint, these solutions may also contain a surface active agent which is a polyether of the form ##STR1## in which R is an alkyl, aryl, aryl-alkyl or alkyl-aryl group, containing at least 10 carbon atoms, and n and p are whole numbers of which one may be zero, n+p being comprised between 12 and 100.
Inventors
- 👤 Philippe Schlicklin
- 👤 Anne-Marie Mertzweiller nee Maillard
- 👤 Jacques Ploussard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02; C; C09; C09D; C09D7/00; C09D7/71
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
Method for the denaturation of water-base paints, characterized in that the paint is contacted with and dispersed in a solution containing between 1.5 to 10 g/l of at least one sulphate of iron (II), of magnesium or of manganese and at least one non-ionic surface active agent corresponding to general formula ##STR3## in which R is an alkyl, aryl, aryl-alkyl or alkyl-aryl group, containing at least 10 carbon atoms, and n and p are whole numbers of which one may be zero, and n+p being comprised between 12 and 100, said solution having a pH during use of between 6.5 and 8.0.
Claim 2
Dependent Claim
102 words
Method for the denaturation of water-base paints, characterized in that the paint is contacted with and dispersed in a solution containing between 1.5 to 10 g/l of at least one sulphate of iron (II), of magnesium or of manganese and at least one non-ionic surface active agent corresponding to general formula ##STR3## in which R is an alkyl, aryl, aryl-alkyl or alkyl-aryl group, containing at least 10 carbon atoms, and n and p are whole numbers of which one may be zero, and n+p being comprised between 12 and 100, said solution having a pH during use of between 6.5 and 8.0.
Claim 3
Dependent Claim
24 words
The method according to claim 1, characterized in that the iron (II), magnesium or manganese sulphate content is comprised between 1.2 and 4 g/l.
Claim 4
Dependent Claim
29 words
The method according to claim 1, characterized in that the sum n+p is comprised between 16 and 30, and the group R contains from 10 to 30 carbon atoms.
Claim 5
Dependent Claim
29 words
The method according to claim 1 or claim 3, characterized in that the surface active agent is introduced into the solution in the proportion of 0.4 to 4 g/l.
Claim 6
Dependent Claim
29 words
The method according to claim 1 or claim 3, characterized in that the surface active agent is introduced into the solution in the proportion of 1 to 2 g/l.
Claim 7
Dependent Claim
26 words
The method according to claim 1, characterized in that the surface active agent is introduced into the solution in an amount of 0.4 to 4 g/l.
Claim 8
Dependent Claim
16 words
The method according to claim 1, characterized in that solution comprises, in addition, an anti-foaming agent.
Claim 9
Dependent Claim
16 words
The method according to claim 1, characterized in that solution comprises, in addition, a corrosion inhibitor.
Claim 10
Dependent Claim
19 words
The method according to claim 8, characterized in that the corrosion inhibitor is a thiourea or a substituted thiourea.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |