Patent JPS6245045B2 successfully refreshed from Google Patents.
US5085903A
Expired / Lapsed
US
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Coatings for the protection of products in light-transmitting containers
Assignee: PPG Industries Ohio Inc
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Filing: 1990-06-11
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Granted: 1992-02-04
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Expires: 2010-06-11
Abstract
Abstract Disclosed herein is a combination of a film-former, a metal-free, reactive colorant, ultraviolet light absorber and an adhesion promoter in an effective combination to substantially block transmission of light through a container in order to reduce lightstruck phenomenon.
Inventors
- 👤 David C. Kapp
- 👤 Russell E. Boston
- 👤 Leland H. Carlblom
- 👤 Mildred L. McKinley
- 👤 Jess A. Kozma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:04
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/32; C03; C03C; C03C17/00; C03C17/28; C03C17/32; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1352; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31551; Y10T428/31598; Y10T428/31601; Y10T428/31616; Y10T428/31645; Y10T428/31649; Y10T428/31786; Y10T428/31855; Y10T428/31942
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
55 words
A water-based thermosetting coating composition comprising: (i) a film-former including a resin and an internal or external crosslinking agent; (ii) a metal-free colorant polymeric dye which is reactive with the film-former; (iii) and an ultraviolet light absorber in an effective combination to form a transparent thermoset coating which substantially blocks transmission of product damaging light.
Claim 2
Dependent Claim
55 words
A water-based thermosetting coating composition comprising: (i) a film-former including a resin and an internal or external crosslinking agent; (ii) a metal-free colorant polymeric dye which is reactive with the film-former; (iii) and an ultraviolet light absorber in an effective combination to form a transparent thermoset coating which substantially blocks transmission of product damaging light.
Claim 3
Dependent Claim
38 words
The water-based thermosetting coating composition of claim 1 wherein the film-former is selected from the group consisting of an acrylic polymer, a polyester, a polyether, an epoxy polymer, a polyurethane, an aminoplast, a phenoplast or a mixture thereof.
Claim 4
Dependent Claim
18 words
The water-based thermosetting coating composition of claim 1 wherein the colorant is a hydroxy-functional macromolecular chromophore-modified polymeric dye.
Claim 5
Dependent Claim
28 words
The water-based thermosetting coating composition of claim 1 wherein the colorant is present in an amount of about 0.2 to 50 percent by weight based on resin solids.
Claim 6
Dependent Claim
24 words
The water-based thermosetting coating composition of claim 1 wherein the ultraviolet light absorber is a hydroxy-functional material which is a 2-hydroxybenzophenone or a 2-(2H-benzotriazol-2-yl)phenol.
Claim 7
Dependent Claim
15 words
The water-based thermosetting coating composition of claim 5 wherein the ultraviolet light absorber is 2,2',4,4'-tetrahydroxybenzophenone.
Claim 8
Dependent Claim
29 words
The water-based thermosetting coating composition of claim 1 wherein the ultraviolet light absorber is present in an amount of about 0.5 to 5.0 percent by weight based on solids.
Claim 9
Dependent Claim
27 words
The water-based thermosetting coating composition of claim 1 wherein the ultraviolet light absorber is present in an amount of about 0.5 to 2 percent by weight solids.
Claim 10
Dependent Claim
81 words
A process for reducing the degradation of the contents of a light-transmitting container due to the effect of visible and/or ultraviolet light; said process comprising coating the container with a thermosetting water-based coating composition comprising a film-former including a resin and an internal or external crosslinking agent, a metal-free colorant including a polymeric dye which is reactive with a film-former and an ultraviolet light absorber in an effective combination to form a coating which substantially blocks transmission of product damaging light.
Claim 11
Dependent Claim
81 words
A process for reducing the degradation of the contents of a light-transmitting container due to the effect of visible and/or ultraviolet light; said process comprising coating the container with a thermosetting water-based coating composition comprising a film-former including a resin and an internal or external crosslinking agent, a metal-free colorant including a polymeric dye which is reactive with a film-former and an ultraviolet light absorber in an effective combination to form a coating which substantially blocks transmission of product damaging light.
Claim 12
Dependent Claim
19 words
An article of matter comprising a substrate to which is applied the water-based thermosetting coating composition of claim 1.
Claim 13
Dependent Claim
25 words
An article of matter of claim 10 wherein the coating composition is applied at a film thickness of about 0.05 to 0.3 mils or higher.
Claim 14
Dependent Claim
14 words
An article of matter of claim 10 wherein the substrate is glass or plastic.
Claim 15
Dependent Claim
15 words
An article of matter of claim 11 which is in the form of a bottle.
Claim 16
Dependent Claim
13 words
The water-based thermosetting coating composition of claim 1 further including an adhesion promoter.
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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) | 1995-02-03 | 1995-08-05 | 1996-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-03 | 1999-08-05 | 2000-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-03 | 2003-08-05 | 2004-02-04 | $7700.00 | Window Closed / Lapsed |