Patent US4719132A successfully refreshed from Google Patents.
US4719132A
Expired / Lapsed
US
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Process for the preparation of multi-layered coatings and coated articles derived therefrom
Assignee: PPG Industries Ohio Inc
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Filing: 1987-04-29
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Granted: 1988-01-12
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Expires: 2007-04-29
Abstract
Abstract A process for producing multi-layered coated articles is disclosed. The process comprises applying a pigment containing aqueous polyurethane film-forming composition to a substrate to form a basecoat followed by the application of a transparent topcoat to the basecoat.
Inventors
- 👤 Samuel Porter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:32
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/53; B05D7/536; B05D5/00; B05D5/06; B05D5/067; B05D5/068; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31605; Y10T428/31678
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
71 words
A process for applying a composite coating to a substrate comprising: (1) applying to the surface of the substrate an aqueous-based film-forming composition containing color pigments and a water-dilutable polyurethane binder, (2) forming a basecoat on the surface of the substrate from the composition applied from step 1, (3) applying to said basecoat a film-forming composition, (4) forming a transparent topcoat from the composition applied in step 3 over the basecoat.
Claim 2
Dependent Claim
71 words
A process for applying a composite coating to a substrate comprising: (1) applying to the surface of the substrate an aqueous-based film-forming composition containing color pigments and a water-dilutable polyurethane binder, (2) forming a basecoat on the surface of the substrate from the composition applied from step 1, (3) applying to said basecoat a film-forming composition, (4) forming a transparent topcoat from the composition applied in step 3 over the basecoat.
Claim 3
Dependent Claim
40 words
The process of claim 1 in which the polyurethane is formed by chain extending an NCO-prepolymer in aqueous medium with an active hydrogen-containing compound having at least two active hydrogen groups which are more reactive with NCO groups than water.
Claim 4
Dependent Claim
18 words
The process of claim 2 in which the polyurethane contains at least 8 percent by weight urethane moieties.
Claim 5
Dependent Claim
30 words
The process of claim 1 in which a free film of the polyurethane has a percent elongation of greater than 40 percent and a tensile strength greater than 2000 psi.
Claim 6
Dependent Claim
12 words
The process of claim 1 in which the polyurethane is a poly(ester-urethane).
Claim 7
Dependent Claim
12 words
The process of claim 5 in which the poly(ester-urethane) is a poly(ether-ester)urethane.
Claim 8
Dependent Claim
13 words
The process of claim 1 in which the basecoat composition contains an aminoplast.
Claim 9
Dependent Claim
13 words
The process of claim 1 in which the metallic pigment is aluminum flake.
Claim 10
Dependent Claim
14 words
The process of claim 1 in which the basecoat composition is applied by spraying.
Claim 11
Dependent Claim
24 words
The process of claim 1 in which the substrate comprises both metallic and elastomeric parts and the basecoat composition is applied to both parts.
Claim 12
Dependent Claim
22 words
The process of claim 1 in which the topcoat composition is a one-package system comprising an active hydrogen-containing polymer and an aminoplast.
Claim 13
Dependent Claim
15 words
The process of claim 11 in which the active hydrogen-containing polymer is an acrylic polymer.
Claim 14
Dependent Claim
14 words
The process of claim 11 in which the active hydrogen-containing polymer is a polyurethane.
Claim 15
Dependent Claim
22 words
The process of claim 1 in which the topcoat composition is a two-pack system comprising an active hydrogen-containing polymer and a polyisocyanate.
Claim 16
Dependent Claim
14 words
The process of claim 1 in which the active hydrogen-containing polymer is a polyurethane.
Claim 17
Dependent Claim
14 words
The process of claim 1 in which the topcoat composition is organic solvent based.
Claim 18
Dependent Claim
13 words
The process of claim 1 in which the topcoat composition is aqueous based.
Claim 19
Dependent Claim
24 words
The process of claim 16 in which the topcoat composition is sprayable at a resin solids content of at least 40 percent by weight.
Claim 20
Dependent Claim
134 words
A process for applying a composite coating to a substrate comprising both metallic and elastomeric parts, comprising: (1) spraying the substrate with an aqueous-based coating composition containing metallic pigments and a water-dilutable poly(ester-urethane) binder which is formed by chain extending an NCO-poly(ester-urethane) prepolymer in aqueous medium with an active hydrogen-containing compound having at least two active hydrogen groups which are more reactive with NCO groups than water; (2) forming a basecoat on the surface of the substrate from the composition applied from step 1; (3) applying to said basecoat a film-forming composition from a two-package organic solvent-based system comprising a polyurethane polyol and a polyisocyanate, said film-forming composition being sprayable at a resin solids content of at least 40 percent by weight; (4) forming a transparent topcoat from the composition applied from step 3.
Claim 21
Dependent Claim
134 words
A process for applying a composite coating to a substrate comprising both metallic and elastomeric parts, comprising: (1) spraying the substrate with an aqueous-based coating composition containing metallic pigments and a water-dilutable poly(ester-urethane) binder which is formed by chain extending an NCO-poly(ester-urethane) prepolymer in aqueous medium with an active hydrogen-containing compound having at least two active hydrogen groups which are more reactive with NCO groups than water; (2) forming a basecoat on the surface of the substrate from the composition applied from step 1; (3) applying to said basecoat a film-forming composition from a two-package organic solvent-based system comprising a polyurethane polyol and a polyisocyanate, said film-forming composition being sprayable at a resin solids content of at least 40 percent by weight; (4) forming a transparent topcoat from the composition applied from step 3.
Claim 22
Dependent Claim
13 words
The process of claim 19 in which the basecoat composition contains an aminoplast.
Claim 23
Dependent Claim
9 words
An article coated by the process of claim 1.
Claim 24
Dependent Claim
9 words
An article coated by the process of claim 19.
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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) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |