US5416136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst-free single-component coating agent and use thereof for producing acid-resistant lacquer coatings
Assignee: Axalta Coating Systems Germany GmbH and Co KG
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Filing: 1994-04-29
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Granted: 1995-05-16
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Expires: 2014-04-29
Abstract
Abstract A catalyst-free single-component coating agent containing (A) one or more compounds acting as cross-linking agents and with on average at least two CH-azide hydrogen atoms, (B) one or more (meth)acrylate copolymers, polyester resins and/or polyurethane resins capable of Michael addition, with α, β-unsaturated groups bonded via carbonyl, carboxyl and/or carboxylic amide groups, a C═C equivalent weight of 85-1800 and a weight average molecular weight of 170-50000. The equivalent ratio of A to B is 2:1 to 1:2. The coating agent contains solvents and conventional lacquer additives, and optionally contains water, pigments and/or fillers. It results in particularly acid-resistant coatings and is particularly suitable for producing covering lacquer and clear lacquer coatings in the motor-vehicle sector.
Inventors
- 👤 Heinz Konzmann
- 👤 Friedrich Herrmann
- 👤 Wolfgang Diener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:10
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C09D133/00; C09D133/04; C09D201/00; C09D201/02; C09D201/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
A coating composition based on a compound suitable for Michael addition and cross-linking agents wherein the composition is formulated as a single-component coating agent and is free from cross-linking catalysts, wherein the composition is formed from: (A) one or more compounds acting as cross-linking agents with on average at least two hydrogen atoms originating from one or more of the following groupings which can be the same or different: ##STR19## are each bonded via the carbon atom to the CH group, and the CH group is bonded via at least one of the radicals W 1 , W 2 , W 3 to a polymeric or oligomeric unit; and (B) one or more compositions selected from the group consisting of resins and polyurethane resins suitable for Michael addition, comprising α, β-unsaturated groups bonded via the carbonyl carbon atom of ##STR20## with a C═C eqivalent weight of 85-1800 and a weight average molecular weight of 170-50000, the equivalent ratio of A to B being 2:1 to 1:2; and solvents, conventional lacier additives, optionally water, optionally pigments and optionally fillers.
Claim 2
Dependent Claim
178 words
A coating composition based on a compound suitable for Michael addition and cross-linking agents wherein the composition is formulated as a single-component coating agent and is free from cross-linking catalysts, wherein the composition is formed from: (A) one or more compounds acting as cross-linking agents with on average at least two hydrogen atoms originating from one or more of the following groupings which can be the same or different: ##STR19## are each bonded via the carbon atom to the CH group, and the CH group is bonded via at least one of the radicals W 1 , W 2 , W 3 to a polymeric or oligomeric unit; and (B) one or more compositions selected from the group consisting of resins and polyurethane resins suitable for Michael addition, comprising α, β-unsaturated groups bonded via the carbonyl carbon atom of ##STR20## with a C═C eqivalent weight of 85-1800 and a weight average molecular weight of 170-50000, the equivalent ratio of A to B being 2:1 to 1:2; and solvents, conventional lacier additives, optionally water, optionally pigments and optionally fillers.
Claim 3
Dependent Claim
29 words
A catalyst-free single-component coating composition according to claim 1, in which the cross-linking component A and the component B are substantially free from primary, secondary and tertiary amino groups.
Claim 4
Dependent Claim
31 words
A catalyst-free single-component coating composition according to claims 1 or 2 and in aqueous form with a solvent content of 0 to 15 wt. %, relative to the total coating composition.
Claim 5
Dependent Claim
18 words
A catalyst-free single-component coating composition according to claims 1 or 2, containing water and one or more emulsifiers.
References Cited (Backward Citations)
US5159024A
Cited
US5169979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-05-15 | 1998-11-14 | 1999-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-15 | 2002-11-14 | 2003-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-15 | 2006-11-14 | 2007-05-16 | $7700.00 | Window Closed / Lapsed |