Patent US4200681A successfully refreshed from Google Patents.
US4200681A
Expired / Lapsed
US
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Glass coated polycarbonate articles
Assignee: General Electric Co
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Filing: 1978-11-13
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Granted: 1980-04-29
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Expires: 1998-11-13
Abstract
Abstract An abrasion, scratch, mar and solvent resistant glass coated non-opaque shaped polycarbonate article comprising a polycarbonate substrate having deposited on the surface thereof (i) an intermediate primer layer containing the photoreaction products of certain polyfunctional acrylic monomers; and (ii) a top layer of vapor deposited glass.
Inventors
- 👤 Walter L. Hall
- 👤 James S. Humphrey, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:24
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/10; B; B29; B29D; B29D11/00; B29D11/00865; C03; C03C; C03C3/00; C03C3/04; C03C3/06; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/043; C08J7/046; C23C14/02; C23C14/024; C03C2201/00; C03C2201/02; C03C2201/06; C03C2203/00; C03C2203/40; C08J2369/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31645
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
A shaped non-opaque polycarbonate article having improved mar, abrasion, scratch and organic solvent resistance comprising a polycarbonate substrate having deposited thereon (i) a primer coating layer comprised of the photoreaction product of at least one polyfunctional acrylic monomer represented by the general formula ##STR14## wherein n is an integer having a value of from 2 to 4, and R is a n valent hydrocarbon radical, n valent substituted hydrocarbon radical, n valent hydrocarbon radical containing at least one ether linkage, and a n valent substituted hydrocarbon radical containing at least one ether linkage; and (ii) a thin top layer of vapor deposited glass on said primer coating layer.
Claim 2
Dependent Claim
108 words
A shaped non-opaque polycarbonate article having improved mar, abrasion, scratch and organic solvent resistance comprising a polycarbonate substrate having deposited thereon (i) a primer coating layer comprised of the photoreaction product of at least one polyfunctional acrylic monomer represented by the general formula ##STR14## wherein n is an integer having a value of from 2 to 4, and R is a n valent hydrocarbon radical, n valent substituted hydrocarbon radical, n valent hydrocarbon radical containing at least one ether linkage, and a n valent substituted hydrocarbon radical containing at least one ether linkage; and (ii) a thin top layer of vapor deposited glass on said primer coating layer.
Claim 3
Dependent Claim
82 words
The article of claim 1 wherein said n valent hydrocarbon radical is an n valent aliphatic hydrocarbon radical, said n valent substituted hydrocarbon radical is a n valent substituted aliphatic hydrocarbon radical, said n valent hydrocarbon radical containing at least one ether linkage is a n valent aliphatic hydrocarbon containing at least one ether linkage, and said n valent substituted hydrocarbon radical containing at least one ether linkage is a n valent substituted aliphatic hydrocarbon radical containing at least one ether linkage.
Claim 4
Dependent Claim
27 words
The article of claim 2 wherein said n valent aliphatic hydrocarbon radical and n valent substituted aliphatic hydrocarbon radical contain from 1 to about 20 carbon atoms.
Claim 5
Dependent Claim
47 words
The article of claim 2 wherein said n valent aliphatic hydrocarbon radical containing at least one ether linkage and n valent substituted aliphatic hydrocarbon radical containing at least one ether linkage contain from 2 to about 20 carbon atoms and from 1 to about 5 ether linkages.
Claim 6
Dependent Claim
22 words
The article of claim 1 wherein said primer coating layer is comprised of the photoreaction product of ethyleneglycol diacrylate and pentaerythritol triacrylate.
Claim 7
Dependent Claim
25 words
The article of claim 1 wherein said vapor deposited layer of glass is comprised substantially of SiO x wherein x ranges from 1 to 2.
Claim 8
Dependent Claim
9 words
The article of claim 6 wherein x is 2.
Claim 9
Dependent Claim
144 words
A shaped, non-opaque polycarbonate article having improved mar, abrasion, scratch and organic solvent resistance, said article being obtained by (i) applying to a polycarbonate substrate a photocurable primer coating composition comprised of (a) a photosensitizer, and (b) at least one photocurable, polyfunctional acrylic monomer represented by the general formula ##STR15## wherein n is an integer having a value of from 2 to 4, and R is a n valent hydrocarbon radical, n valent substituted hydrocarbon radical, n valent hydrocarbon radical containing at least one ether linkage, and a n valent substituted hydrocarbon radical containing at least one ether linkage; (ii) exposing said primer coating composition to ultraviolet light for a period of time sufficient to photocure said coating composition, thereby producing a hard primer coating layer on said polycarbonate substrate; and (iii) vapor depositing a thin layer of glass onto said primer coating layer.
Claim 10
Dependent Claim
144 words
A shaped, non-opaque polycarbonate article having improved mar, abrasion, scratch and organic solvent resistance, said article being obtained by (i) applying to a polycarbonate substrate a photocurable primer coating composition comprised of (a) a photosensitizer, and (b) at least one photocurable, polyfunctional acrylic monomer represented by the general formula ##STR15## wherein n is an integer having a value of from 2 to 4, and R is a n valent hydrocarbon radical, n valent substituted hydrocarbon radical, n valent hydrocarbon radical containing at least one ether linkage, and a n valent substituted hydrocarbon radical containing at least one ether linkage; (ii) exposing said primer coating composition to ultraviolet light for a period of time sufficient to photocure said coating composition, thereby producing a hard primer coating layer on said polycarbonate substrate; and (iii) vapor depositing a thin layer of glass onto said primer coating layer.
Claim 11
Dependent Claim
83 words
The article of claim 8 wherein said n valent hydrocarbon radical is a n valent aliphatic hydrocarbon radical, said n valent substituted hydrocarbon radical is a n valent substituted aliphatic hydrocarbon radical, said n valent hydrocarbon radical containing at least one ether linkage is a n valent aliphatic hydrocarbon radical containing at least one ether linkage, and said n valent substituted hydrocarbon radical containing at least one ether linkage is a n valent substituted aliphatic hydrocarbon radical containing at least one ether linkage.
Claim 12
Dependent Claim
27 words
The article of claim 9 wherein said n valent aliphatic hydrocarbon radical and n valent substituted aliphatic hydrocarbon radical contain from 1 to about 20 carbon atoms.
Claim 13
Dependent Claim
48 words
The article of claim 9 wherein said n valent aliphatic hydrocarbon radical containing at least one ether linkage and said n valent substituted aliphatic hydrocarbon radical containing at least one ether linkage contain from 2 to about 20 carbon atoms and from 1 to about 5 ether linkages.
Claim 14
Dependent Claim
16 words
The article of claim 8 wherein said primer coating composition contains ethyleneglycol diacrylate and pentaerythritol triacrylate.
Claim 15
Dependent Claim
22 words
The article of claim 8 wherein said glass layer is comprised substantially of SiO x wherein x ranges from 1 to 2.
Claim 16
Dependent Claim
9 words
The article of claim 13 wherein x is 2.
Claim 17
Dependent Claim
18 words
The article of claim 8 wherein said glass layer is vaporized by means of radio frequency induction heating.
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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |