US4557975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocurable acrylate-acrylonitrile coated plastic articles
Assignee: General Electric Co
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Filing: 1983-12-30
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Granted: 1985-12-10
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Expires: 2003-12-30
Abstract
Abstract Polymeric substrates, especially the polycarbonates, are coated with a photocurable coating mixture containing polyfunctional acrylates, acrylonitriles, and a photoiniator to produce scratch- and mar-resistant polymeric articles.
Inventors
- 👤 James E. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; C08J7/18; C09; C09D; C09D4/00; C08J2369/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
85 words
A transparent, scratch-resistant, coating composition for application to plastic substrates which coating composition comprises: (i) an amount of photoinitiator effective to initiate the photocure of said composition upon exposure to ultraviolet light; (ii) pentaerythritol triacrylate; and (iii) at least one acrylonitrile of the general formula ##STR23## wherein R" is selected from the group consisting of a hydrogen, halogen, and aliphatic hydrocarbon containing up to 3 carbons, to form a composition having a weight ratio of acrylonitrile to polyfunctional acrylate between about 1/100 to about 5/1.
Claim 2
Dependent Claim
85 words
A transparent, scratch-resistant, coating composition for application to plastic substrates which coating composition comprises: (i) an amount of photoinitiator effective to initiate the photocure of said composition upon exposure to ultraviolet light; (ii) pentaerythritol triacrylate; and (iii) at least one acrylonitrile of the general formula ##STR23## wherein R" is selected from the group consisting of a hydrogen, halogen, and aliphatic hydrocarbon containing up to 3 carbons, to form a composition having a weight ratio of acrylonitrile to polyfunctional acrylate between about 1/100 to about 5/1.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein said photoinitiator is selected from the group consisting of (dimethoxyphenyl)acetophenone and (p-phenoxy)dichloroacetophenone.
Claim 4
Dependent Claim
10 words
The composition of claim 1 wherein said R" is hydrogen.
Claim 5
Dependent Claim
78 words
An article having improved abrasion resistance comprising a plastic substrate coated with an ultraviolet light cured coating comprising the photoreaction products of: (i) a photoinitiator; (ii) pentaerythritol triacrylate; and (iii) at least one acrylonitrile of the general formula: ##STR24## wherein R" is selected from the group consisting of a hydrogen, halogen, and aliphatic hydrocarbon containing up to 3 carbons, to form a composition having a weight ratio of acrylonitrile to polyfunctional acrylate between about 1/100 to about 5/1.
Claim 6
Dependent Claim
78 words
An article having improved abrasion resistance comprising a plastic substrate coated with an ultraviolet light cured coating comprising the photoreaction products of: (i) a photoinitiator; (ii) pentaerythritol triacrylate; and (iii) at least one acrylonitrile of the general formula: ##STR24## wherein R" is selected from the group consisting of a hydrogen, halogen, and aliphatic hydrocarbon containing up to 3 carbons, to form a composition having a weight ratio of acrylonitrile to polyfunctional acrylate between about 1/100 to about 5/1.
Claim 7
Dependent Claim
20 words
The article of claim 4 wherein the coating has a thickness of from about 0.05 mil to about 5 mil.
Claim 8
Dependent Claim
10 words
The article of claim 4 wherein said R" is hydrogen.
Claim 9
Dependent Claim
11 words
The article of claim 4 wherein said plastic substrate is polycarbonate.
Claim 10
Independent Claim
93 words
The method for providing a mar resistant, tenaciously and durably adhered, hard coating onto the surface of a plastic substrate comprising the steps of: (i) coating the plastic substrate with a composition comprising: (a) pentaerythritol triacrylate; (b) a photoinitiator, and (c) acrylonitrile of the general formula ##STR25## wherein R" is selected from the group consisting of a hydrogen, halogen, and aliphatic hydrocarbon containing up to 3 carbons in a weight ratio of about 1/100 to about 5/1 to said polyfunctional acrylate monomer; and (ii) photo-curing the resultant coating, thereby forming said hard coating.
Claim 11
Independent Claim
93 words
The method for providing a mar resistant, tenaciously and durably adhered, hard coating onto the surface of a plastic substrate comprising the steps of: (i) coating the plastic substrate with a composition comprising: (a) pentaerythritol triacrylate; (b) a photoinitiator, and (c) acrylonitrile of the general formula ##STR25## wherein R" is selected from the group consisting of a hydrogen, halogen, and aliphatic hydrocarbon containing up to 3 carbons in a weight ratio of about 1/100 to about 5/1 to said polyfunctional acrylate monomer; and (ii) photo-curing the resultant coating, thereby forming said hard coating.
Claim 12
Dependent Claim
35 words
The method of claim 8 wherein said resultant coating of said coating step is applied to a thickness sufficient to form a cured coating of from about 0.05 mil to about 5 mil in thickness.
Claim 13
Dependent Claim
10 words
The method of claim 8 wherein said R" is hydrogen.
Claim 14
Dependent Claim
11 words
The method of claim 8 wherein said plastic substrate is polycarbonate.
References Cited (Backward Citations)
US3968305A
Cited
US4319811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |