US3918393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing flat (non-glossy) films
Assignee: PPG Industries Inc
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Filing: 1971-09-10
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Granted: 1975-11-11
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Expires: 1991-09-10
Abstract
Abstract A flat film or coating is prepared by subjecting a substantially solventless, actinic light, or radiation-sensitive material to ionizing irradiation or actinic light in an oxygen-containing atmosphere and subsequently subjecting the material to ionizing irradiation or actinic light in an inert gas or an atmosphere containing less than about 1000 parts per million of oxygen. The preferred films or coatings are prepared from polyacrylates or unsaturated polyester resins.
Inventors
- 👤 Ernest A Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:01
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; B; B05; B05D; B05D3/00; B05D3/06; B05D3/061; B05D3/065; B05D3/067; B05D3/068; B29; B29C; B29C35/00; B29C35/02; B29C35/08; C08F283/00; C08F283/01; B05D3/04; B05D3/0486; B29C35/0805; B29C2035/0833; B29C2791/00; B29C2791/001; B29K; B29K2033/00; B29K2033/04; B29K2033/08; B29K2067/00; B29K2067/06; B29L; B29L2007/00; B29L2007/008; Y; Y10; Y10S; Y10S522/00; Y10S522/911
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
71 words
THE METOD OF OBTAINING A STRONG, NON-GLOSSY FILM COMPRISING SUBJECTING SUBSTANTIALLY SLVENTLESS, RADIATION-SENSITIVE OR ACTINIC LIGHT SENSITIVE MATERIAL TO IONIZING IRRADIATION OR ACTINIC LIGHT IN AN ATMOSPHERE CONTAINING AT LEAST ABOUT 5,000 PARTS PER MILLON OF OXYGEN UNTIL THE MATERIAL IS CURED EXCEPT FOR ITS SURFACE, AND SUBSEQUENTLY SUBJECTING THE MATERIAL TO IONIZING IRRADIATION OR ACTINIC LIGHT IN AN INERT ATMOSPHERE CONTAINING LESS THAN ABOUT 1000 PARTS PER MILLION OF OXYGEN.
Claim 2
Dependent Claim
71 words
THE METOD OF OBTAINING A STRONG, NON-GLOSSY FILM COMPRISING SUBJECTING SUBSTANTIALLY SLVENTLESS, RADIATION-SENSITIVE OR ACTINIC LIGHT SENSITIVE MATERIAL TO IONIZING IRRADIATION OR ACTINIC LIGHT IN AN ATMOSPHERE CONTAINING AT LEAST ABOUT 5,000 PARTS PER MILLON OF OXYGEN UNTIL THE MATERIAL IS CURED EXCEPT FOR ITS SURFACE, AND SUBSEQUENTLY SUBJECTING THE MATERIAL TO IONIZING IRRADIATION OR ACTINIC LIGHT IN AN INERT ATMOSPHERE CONTAINING LESS THAN ABOUT 1000 PARTS PER MILLION OF OXYGEN.
Claim 3
Dependent Claim
33 words
The method of claim 1 wherein the total dosage of irradiation received in the atmosphere containing greater than 5,000 parts per million of oxygen is from about 0.2 megarads to about 20 megarads.
Claim 4
Dependent Claim
83 words
actinic light radiation while said layer is in contact at one surface with an air or oxygen-containing atmospheRe to partially cure said composition; then b. subjecting said layer to said irradiation while said layer is in contact at said surface with an inert or substantially oxygen free atmosphere to complete the curing of said composition; c. said substantially oxygen free atmosphere being an atmosphere such that any oxygen present as a trace amount is insufficient to inhibit free radical cure of said composition.
Claim 5
Dependent Claim
83 words
actinic light radiation while said layer is in contact at one surface with an air or oxygen-containing atmospheRe to partially cure said composition; then b. subjecting said layer to said irradiation while said layer is in contact at said surface with an inert or substantially oxygen free atmosphere to complete the curing of said composition; c. said substantially oxygen free atmosphere being an atmosphere such that any oxygen present as a trace amount is insufficient to inhibit free radical cure of said composition.
Claim 6
Dependent Claim
34 words
The method of claim 1 wherein the total dosage of irradiation received in the atmosphere containing less than about 1000 parts per million of oxygen is from about 0.2 megarads to about 20 megarads.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein the radiation treatment is actinic light.
Claim 8
Dependent Claim
12 words
The method of claim 1 wherein the radiation-sensitive material contains a polyacrylate.
Claim 9
Dependent Claim
14 words
The method of claim 1 wherein the radiation-sensitive material contains an unsaturated polyester resin.
Claim 10
Independent Claim
77 words
The method of coating a substrate with a non-glossy coating comprising applying to the substrate a substantially solventless, radiation-sensitive material and subjecting to ionizing irradiation or actinic light in an atmosphere of at least about 5,000 parts per million of oxygen until the radiation-sensitive material is cured except for its surface and subsequently subjecting the radiation-sensitive coating to ionizing irradiation or actinic light in an inert atmosphere containing less than about 1000 parts per million of oxygen.
Claim 11
Independent Claim
77 words
The method of coating a substrate with a non-glossy coating comprising applying to the substrate a substantially solventless, radiation-sensitive material and subjecting to ionizing irradiation or actinic light in an atmosphere of at least about 5,000 parts per million of oxygen until the radiation-sensitive material is cured except for its surface and subsequently subjecting the radiation-sensitive coating to ionizing irradiation or actinic light in an inert atmosphere containing less than about 1000 parts per million of oxygen.
Claim 12
Dependent Claim
32 words
The method of claim 7 wherein the total dosage of irradiation received in the atmosphere containing greater than 5,000 parts per million of oxygen is from about 0.2 to about 20 megarads.
Claim 13
Dependent Claim
33 words
The method of claim 7 wherein the total dosage of irradiation received in the atmosphere containing less than about 1000 parts per million of oxygen is from about 0.2 to about 20 megarads.
Claim 14
Dependent Claim
12 words
The method of claim 7 wherein the radiation treatment is actinic light.
Claim 15
Dependent Claim
12 words
The method of claim 7 wherein the radiation-sensitive material contains a polyacrylate.
Claim 16
Dependent Claim
14 words
The method of claim 7 wherein the radiation-sensitive material contains an unsaturated polyester resin.
Claim 17
Dependent Claim
9 words
The film formed by the method of claim 1.
Claim 18
Dependent Claim
10 words
The coated material formed by the method of claim 7.
Claim 19
Independent Claim
33 words
The method of radiation curing a layer of a radiation curable composition to obtain a low gloss surface comprising: a. subjecting said layer of radiation curable composition to irradiation in the form of
Claim 20
Independent Claim
33 words
The method of radiation curing a layer of a radiation curable composition to obtain a low gloss surface comprising: a. subjecting said layer of radiation curable composition to irradiation in the form of
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |