US4822685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing multi-layered coated articles and the coated articles prepared by the method
Assignee: PPG Industries Ohio Inc
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Filing: 1987-12-10
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Granted: 1989-04-18
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Expires: 2007-12-10
Abstract
Abstract A method of forming a multilayered coating on a substrate involves the steps of: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) applying a clear film forming composition over the basecoat of step (I); (III) allowing the clear composition of step (II) to at least partially dry or cure to form a transparent topcoat over said basecoat.
Inventors
- 👤 Leon A. Perez
- 👤 Marvis E. Hartman
- 👤 Naomi R. Suss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:53
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/10; C08G18/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
95 words
A method of forming a multilayered coating on a substrate, comprising: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising an effective amount of the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) applying a clear film forming composition over the basecoat of step (I); (III) allowing the clear composition of step (II) to at least partially dry or cure to form a transparent topcoat over said basecoat.
Claim 2
Independent Claim
95 words
A method of forming a multilayered coating on a substrate, comprising: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising an effective amount of the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) applying a clear film forming composition over the basecoat of step (I); (III) allowing the clear composition of step (II) to at least partially dry or cure to form a transparent topcoat over said basecoat.
Claim 3
Independent Claim
118 words
A method of forming a multilayered coating on a substrate, comprising: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising an effective amount of the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) allowing the composition applied in step (I) to at least partially dry or cure to form a basecoat on the substrate surface; (III) applying a clear film forming composition over the basecoat of step (II); (IV) allowing the clear composition of step (III) to at least partially dry or cure to form a transparent topcoat over said basecoat.
Claim 4
Independent Claim
118 words
A method of forming a multilayered coating on a substrate, comprising: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising an effective amount of the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) allowing the composition applied in step (I) to at least partially dry or cure to form a basecoat on the substrate surface; (III) applying a clear film forming composition over the basecoat of step (II); (IV) allowing the clear composition of step (III) to at least partially dry or cure to form a transparent topcoat over said basecoat.
Claim 5
Dependent Claim
28 words
The method of claim 1 wherein the isocyanate containing prepolymer is prepared from ingredients comprising a diisocyanate and a polyol having a hydroxyl functionality of greater than 2.
Claim 6
Dependent Claim
13 words
The method of claim 3 wherein the polyol also contains anionic salt groups.
Claim 7
Dependent Claim
15 words
The method of claim 4 wherein the anionic salt group is a carboxylic acid group.
Claim 8
Dependent Claim
28 words
The method of claim 1 wherein the isocyanate containing prepolymer is prepared from ingredients comprising a triisocyanate and a polyol having a hydroxyl functionality of at least 2.
Claim 9
Dependent Claim
43 words
The method of claim 1 wherein the isocyanate containing prepolymer is prepared from ingredients comprising a diisocyanate and a polyol having a hydroxyl functionality of greater than 2 which is prepared from the polyesterification of components comprising a dihydroxycarboxylic acid and a diol.
Claim 10
Dependent Claim
12 words
The method of claim 7 wherein the dihydroxycarboxylic acid is dimethylolpropionic acid.
Claim 11
Dependent Claim
40 words
The method of claim 1 wherein the polyurethane polymer of the dispersion has a urethane content of at least 6 percent by weight, the percentage by weight being based on the weight of urethane linkage per total weight of polymer.
Claim 12
Dependent Claim
23 words
The method of claim 3 wherein the isocyanate containing prepolymer is prepared from ingredients comprising a polyisocyanate and trimethylolpropane, epsilon-caprolactone, and dimethylolpropionic acid.
Claim 13
Dependent Claim
11 words
The method of claim 10 wherein the polyisocyanate is a diisocyanate.
Claim 14
Dependent Claim
11 words
The method of claim 1 wherein the polyamine is a diamine.
Claim 15
Dependent Claim
14 words
The method of claim 1 wherein the basecoat composition additionally comprises an aminoplast resin.
Claim 16
Dependent Claim
12 words
The method of claim 1 wherein the color pigment is aluminum flake.
Claim 17
Dependent Claim
12 words
The method of claim 1 wherein the composition is applied by spraying.
Claim 18
Dependent Claim
20 words
The method of claim 1 wherein the basecoat composition additionally comprises a further aqueous based active hydrogen containing film-forming polymer.
Claim 19
Dependent Claim
17 words
The method of claim 16 wherein the further film forming polymer is an aqueous based acrylic polymer.
Claim 20
Dependent Claim
20 words
The method of claim 1 wherein the basecoat composition additionally comprises a solvent based active hydrogen containing film forming polymer.
Claim 21
Dependent Claim
21 words
The method of claim 18 wherein the solvent based active hydrogen containing film forming polymer is a high solids polyester polyol.
Claim 22
Dependent Claim
26 words
The method of claim 1 wherein the clear topcoat composition comprises a film forming active hydrogen containing polymer and a crosslinker selected from aminoplasts and polyisocyanates.
Claim 23
Dependent Claim
17 words
The method of claim 20 wherein the film forming active hydrogen containing polymer is an acrylic polyol.
Claim 24
Dependent Claim
17 words
The method of claim 20 wherein the film forming active hydrogen containing polymer is a polyurethane polyol.
Claim 25
Dependent Claim
12 words
The method of claim 1 wherein the topcoat composition is aqueous based.
Claim 26
Dependent Claim
12 words
The method of claim 1 wherein the topcoat composition is solvent based.
Claim 27
Dependent Claim
23 words
The method claim 1 in which the substrate comprises both metallic and elastomeric parts and the basecoat composition is applied to both parts.
Claim 28
Dependent Claim
21 words
The method of claim 1 in which the topcoat composition is a one-package system and the crosslinker is an aminoplast resin.
Claim 29
Dependent Claim
24 words
The method of claim 24 in which the topcoat composition is sprayable at a resin solids content of at least 40 percent by weight.
Claim 30
Independent Claim
112 words
A method of forming a multilayered coating on a substrate comprising both metallic and elastomeric parts, comprising: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising an effective amount of the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) applying to said basecoat of step (I) a clear film-forming composition of a two-package organic solvent based system comprising a polyurethane polyol and a polyisocyanate; (III) allowing the clear composition of step (II) to at least partially cure to form a transparent topcoat over the basecoat.
Claim 31
Independent Claim
112 words
A method of forming a multilayered coating on a substrate comprising both metallic and elastomeric parts, comprising: (I) applying to the surface of a substrate an aqueous based film forming composition comprising color pigments and an aqueous polyurethane dispersion comprising an effective amount of the reaction product of: (a) a substantially branched, isocyanate containing prepolymer; and (b) a polyamine having primary and/or secondary amino groups; (II) applying to said basecoat of step (I) a clear film-forming composition of a two-package organic solvent based system comprising a polyurethane polyol and a polyisocyanate; (III) allowing the clear composition of step (II) to at least partially cure to form a transparent topcoat over the basecoat.
Claim 32
Dependent Claim
44 words
The method of claim 28 comprising the additional step of allowing the composition in step (I) to at least partially dry or cure to form a basecoat on the surface of the substrate prior to applying the clear film-forming composition of the next step.
Claim 33
Dependent Claim
14 words
The method of claim 28 in which the basecoat composition contains an aminoplast resin.
Claim 34
Dependent Claim
9 words
An article coated by the method of claim 1.
Claim 35
Dependent Claim
9 words
An article coated by the method of claim 28.
Claim 36
Dependent Claim
26 words
The method of claim 1 wherein the isocyanate containing prepolymer is derived from at least 20 milliequivalents of a material having a functionality greater than 2.
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |