US4070497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of applying and curing a plurality of coatings
Assignee: PPG Industries Inc
•
Filing: 1973-03-06
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Granted: 1978-01-24
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Expires: 1993-03-06
Abstract
Abstract A topcoat is applied over a coating which has been gelled by actinic light and which is curable by ionizing irradiation. The gelled coating and the topcoat are exposed to ionizing irradiation to cure the gelled coating. It is preferred that the topcoat as applied be curable by ionizing irradiation so that it will also be cured during exposure to ionizing irradiation.
Inventors
- 👤 Marco Wismer
- 👤 Gene Gerek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:25
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
41 words
A method comprising a. applying over a coating which has been gelled by actinic light and which is curable by ionizing irradiation, a topcoat; and b. exposing said gelled coating and said topcoat to ionizing irradiation to cure said gelled coating.
Claim 2
Independent Claim
41 words
A method comprising a. applying over a coating which has been gelled by actinic light and which is curable by ionizing irradiation, a topcoat; and b. exposing said gelled coating and said topcoat to ionizing irradiation to cure said gelled coating.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said topcoat as applied is curable by ionizing irradiation and wherein said topcoat is cured during said exposure to said ionizing irradiation.
Claim 4
Independent Claim
50 words
A method comprising a. exposing a coating which is gellable by actinic light and curable by ionizing irradiaton, to actinic light to gel said coating; b. applying to said gelled coating a topcoat; and c. exposing said gelled coating and said topcoat to ionizing irradiaton to cure said gelled coating.
Claim 5
Independent Claim
50 words
A method comprising a. exposing a coating which is gellable by actinic light and curable by ionizing irradiaton, to actinic light to gel said coating; b. applying to said gelled coating a topcoat; and c. exposing said gelled coating and said topcoat to ionizing irradiaton to cure said gelled coating.
Claim 6
Dependent Claim
28 words
The method of claim 3 wherein said topcoat as applied is curable by ionizing irradiation and wherein said topcoat is cured during said exposure to said ionizing irradiation.
Claim 7
Dependent Claim
11 words
The method of claim 4 wherein said topcoat is a varnish.
Claim 8
Dependent Claim
12 words
The method of claim 5 wherein said varnish is a nitrocellulose lacquer.
Claim 9
Dependent Claim
12 words
The method of claim 5 wherein said varnish is an acrylic resin.
Claim 10
Dependent Claim
12 words
The method of claim 5 wherein said varnish is a vinyl lacquer.
Claim 11
Dependent Claim
13 words
The method of claim 3 wherein said coating contains a polyfunctional acrylic resin.
Claim 12
Dependent Claim
11 words
The method of claim 9 wherein said coating contains acryloxypivalyl acryloxypivalate.
Claim 13
Dependent Claim
12 words
The method of claim 3 wherein the actinic light is ultra-violet light.
Claim 14
Dependent Claim
26 words
The method of claim 11 wherein the wave length of the ultra-violet light is in the range of from about 1800 to about 4000 angstrom units.
Claim 15
Dependent Claim
28 words
The method of claim 3 wherein said gelled coating and said topcoat are exposed to ionizing irradiation in the amount of from about 0.1 to about 10 megarads.
Claim 16
Dependent Claim
16 words
The method of claim 3 wherein said coating and said topcoat are applied by printing methods.
Claim 17
Independent Claim
63 words
A method of coating a substrate comprising: a. applying to said substrate a coating which is gellable by actinic light and curable by ionizing irradiation; b. exposing said coating to actinic light to gel said coating; c. applying to said gelled coating a topcoat; and d. exposing said substrate, said gelled coating and said topcoat to ionizing irradiation to cure said gelled coating.
Claim 18
Independent Claim
63 words
A method of coating a substrate comprising: a. applying to said substrate a coating which is gellable by actinic light and curable by ionizing irradiation; b. exposing said coating to actinic light to gel said coating; c. applying to said gelled coating a topcoat; and d. exposing said substrate, said gelled coating and said topcoat to ionizing irradiation to cure said gelled coating.
Claim 19
Dependent Claim
28 words
The method of claim 15 wherein said topcoat as applied is curable by ionizing irradiation and wherein said topcoat is cured during said exposure to said ionizing irradiation.
Claim 20
Independent Claim
80 words
A method of coating a substrate comprising: a. applying to said substrate a coating which is gellable by actinic light and curable by ionizing irradiation; b. exposing said coating to actinic light to gel said coating; c. sequentially performing steps a and b a further (n-1) times, wherein n is a positive integer; d. applying to the gelled coatings a topcoat; and e. exposing said substrate, said gelled coatings and said topcoat to ionizing irradiation to cure said gelled coatings.
Claim 21
Independent Claim
80 words
A method of coating a substrate comprising: a. applying to said substrate a coating which is gellable by actinic light and curable by ionizing irradiation; b. exposing said coating to actinic light to gel said coating; c. sequentially performing steps a and b a further (n-1) times, wherein n is a positive integer; d. applying to the gelled coatings a topcoat; and e. exposing said substrate, said gelled coatings and said topcoat to ionizing irradiation to cure said gelled coatings.
Claim 22
Dependent Claim
28 words
The method of claim 17 wherein said topcoat as applied is curable by ionizing irradiation and wherein said topcoat is cured during said exposure to said ionizing irradiation.
Claim 23
Dependent Claim
14 words
The method of claim 17 wherein said substrate is metal, wood, paper or plastic.
Claim 24
Independent Claim
133 words
A method of coating a substrate comprising: a. applying to said substrate a coating which is gellable by actinic light and curable by ionizing irradiation; b. exposing said coating to actinic light to gel said coating; c. applying to the previously gelled coating a coating which is gellable by actinic light and curable by ionizing irradiation; d. exposing the coating applied in step (c) to actinic light to gel said coating applied in step (c) e. sequentially performing steps (c) and (d) a further (n-2) times, wherein n is a positive integer greater than 1, to form n layers of gelled coatings; f. applying to the n th layer of gelled coating of topcoat; and g. exposing said substrate, said gelled coatings and said topcoat to ionizing irradiation to cure said gelled coatings.
Claim 25
Independent Claim
133 words
A method of coating a substrate comprising: a. applying to said substrate a coating which is gellable by actinic light and curable by ionizing irradiation; b. exposing said coating to actinic light to gel said coating; c. applying to the previously gelled coating a coating which is gellable by actinic light and curable by ionizing irradiation; d. exposing the coating applied in step (c) to actinic light to gel said coating applied in step (c) e. sequentially performing steps (c) and (d) a further (n-2) times, wherein n is a positive integer greater than 1, to form n layers of gelled coatings; f. applying to the n th layer of gelled coating of topcoat; and g. exposing said substrate, said gelled coatings and said topcoat to ionizing irradiation to cure said gelled coatings.
Claim 26
Dependent Claim
28 words
The method of claim 20 wherein said topcoat as applied is curable by ionizing irradiation and wherein said topcoat is cured during said exposure to said ionizing irradiation.
Claim 27
Dependent Claim
14 words
The method of claim 20 wherein said substrate is metal, wood, paper or plastic.
Claim 28
Dependent Claim
11 words
The method of claim 1 wherein said gelled coating contains pigments.
Claim 29
Dependent Claim
11 words
The method of claim 3 wherein said gellable coating contains pigments.
Claim 30
Dependent Claim
11 words
The method of claim 15 wherein said gellable coating contains pigments.
Claim 31
Dependent Claim
11 words
The method of claim 17 wherein said gellable coating contains pigments.
Claim 32
Dependent Claim
11 words
The method of claim 20 wherein said gellable coating contains pigments.
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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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |