Patent US4533595A successfully refreshed from Google Patents.
US4533595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion-resistant resinous articles
Assignee: General Electric Co
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Filing: 1984-01-11
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Granted: 1985-08-06
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Expires: 2004-01-11
Abstract
Abstract Resinous articles, especially polycarbonate articles, coated with an abrasion-resistant surface coating such as a silicone hardcoat, contain a primer coat between the article and the surface coating, said primer coat being a copolymer of a monomer mixture including an ethylenically unsaturated monomer having an ultraviolet degradation inhibiting moiety, preferably a 4-(2-hydroxybenzophenone)oxy moiety. The articles are characterized by improved hardcoat adhesion and resistance to discoloration and ultraviolet degradation.
Inventors
- 👤 Daniel R. Olson
- 👤 Timothy W. O'Donnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:57
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/046; C08J2369/00; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A solid article of manufacture comprising (A) a resin base; (B) an abrasion-resistant surface coating on said resin base; and (C) a primer coating between said resin base and said surface coating, said primer coating comprising an addition copolymer of a monomer mixture comprising (C-1) a major proportion of at least one acrylic monomer and (C-2) a minor proportion of at least one ethylenically unsaturated monomer having the formula ##STR6## wherein R 1 is hydrogen or methyl, Z is a substantially inert linking group, and X 1 is an ultraviolet degradation-inhibiting moiety.
Claim 2
Dependent Claim
92 words
A solid article of manufacture comprising (A) a resin base; (B) an abrasion-resistant surface coating on said resin base; and (C) a primer coating between said resin base and said surface coating, said primer coating comprising an addition copolymer of a monomer mixture comprising (C-1) a major proportion of at least one acrylic monomer and (C-2) a minor proportion of at least one ethylenically unsaturated monomer having the formula ##STR6## wherein R 1 is hydrogen or methyl, Z is a substantially inert linking group, and X 1 is an ultraviolet degradation-inhibiting moiety.
Claim 3
Dependent Claim
14 words
An article according to claim 1 wherein component A is an aromatic polycarbonate resin.
Claim 4
Dependent Claim
14 words
An article according to claim 2 wherein component B is a silicone hardcoat coating.
Claim 5
Dependent Claim
23 words
An article according to claim 3 wherein Z is --CH 2 -- or ##STR7## with the ethylene radical attached to X 1 .
Claim 6
Dependent Claim
14 words
An article according to claim 4 wherein component A is a bisphenol A polycarbonate.
Claim 7
Dependent Claim
15 words
An article according to claim 5 wherein reagent C-1 is an acrylate or methacrylate ester.
Claim 8
Dependent Claim
12 words
An article according to claim 6 wherein reagent C-1 is ethyl methacrylate.
Claim 9
Dependent Claim
16 words
An article according to claim 7 wherein the thickness of component C is about 0.01-0.1 mil.
Claim 10
Dependent Claim
13 words
An article according to claim 8 wherein X 1 has the formula ##STR8##
Claim 11
Dependent Claim
16 words
An article according to claim 9 wherein Z is CH 2 and R 1 is hydrogen.
Claim 12
Dependent Claim
10 words
An article according to claim 9 wherein Z is ##STR9##
Claim 13
Dependent Claim
11 words
An article according to claim 11 wherein R 1 is hydrogen.
Claim 14
Dependent Claim
11 words
An article according to claim 11 wherein R 1 is methyl.
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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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |