US3713869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying hard inorganic layers to plastics
Assignee: Schott AG
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Filing: 1971-06-09
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Granted: 1973-01-30
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Expires: 1991-06-09
Abstract
Abstract For the purpose of improving the adherence of a hard inorganic layer which is vaporized in vacuum and precipitated on a substratum of a plastic, an intermediate layer is disposed between the inorganic layer and the substratum. This intermediate layer comprises a polymerization layer which is produced by a glow discharge in a low-molecular organic vapor and is precipitated on said substratum. The substratum may comprise, for example, diethylene-glycol-diallyl-carbonate (CR39), polycarbonate or polymethylmetacrylate (PMMA), while as organic substances for the intermediate layer may be used, for example, silicic-acid-methyl, silicic-acid-ethylester, low boiling siloxane and silicon oils. These organic substances are particularly suitable when a glass layer is used as inorganic layer.
Inventors
- 👤 Walter Geffcken
- 👤 Volker Paquet
- 👤 Helmut Dislich
- 👤 Hubert Dutz
- 👤 Hans Otto Mulfinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:30
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/02; C23C14/021; C23C14/022; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A method of improving the adherence of hard inorganic layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said inorganic layer, said intermediate layer being produced by polymerization of a low molecular organic vapor by means of a glow discharge in said low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, whereupon said inorganic layer is deposited on said intermediate layer.
Claim 2
Independent Claim
83 words
A method of improving the adherence of hard inorganic layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said inorganic layer, said intermediate layer being produced by polymerization of a low molecular organic vapor by means of a glow discharge in said low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, whereupon said inorganic layer is deposited on said intermediate layer.
Claim 3
Independent Claim
82 words
A method of improving the adherence of glAss layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said glass layer, said intermediate layer being produced by polymerization of a low molecular organic vapor by means of a glow discharge in said low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, whereupon said glass layer is deposited on said intermediate layer.
Claim 4
Independent Claim
82 words
A method of improving the adherence of glAss layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said glass layer, said intermediate layer being produced by polymerization of a low molecular organic vapor by means of a glow discharge in said low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, whereupon said glass layer is deposited on said intermediate layer.
Claim 5
Independent Claim
87 words
A method of improving the adherence of hard inorganic layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said inorganic layer, said intermediate layer being produced by polimerization of a low molecular Si containing organic vapor by means of a glow discharge in said Si containing low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, whereupon said inorganic layer is deposited on said intermediate layer.
Claim 6
Independent Claim
87 words
A method of improving the adherence of hard inorganic layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said inorganic layer, said intermediate layer being produced by polimerization of a low molecular Si containing organic vapor by means of a glow discharge in said Si containing low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, whereupon said inorganic layer is deposited on said intermediate layer.
Claim 7
Independent Claim
86 words
A method of improving the adherence of glass layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said glass layer, said intermediate layer being produced by polymerization of a low molecular Si containing organic vapor by means of a glow discharge in said Si containing low molecular organic vapor whereby said intermediate layer is deposited on said substratum, whereupon said glass layer is deposited on said intermediate layer.
Claim 8
Independent Claim
86 words
A method of improving the adherence of glass layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said glass layer, said intermediate layer being produced by polymerization of a low molecular Si containing organic vapor by means of a glow discharge in said Si containing low molecular organic vapor whereby said intermediate layer is deposited on said substratum, whereupon said glass layer is deposited on said intermediate layer.
Claim 9
Independent Claim
124 words
A method of improving the adherence of glass layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said glass layer, said intermediate layer being produced by polymerization of a low molecular organic vapor containing at least one member of the group consisting of an ester of silicic acid and a low boiling silicon oil, by means of a glow discharge in said low molecular organic vapor containing at least one member of the group consisting of an ester of silicic acid and a low boiling silicon oil, whereby said intermediate layer is deposited on said substratum, whereupon said glass layer is deposited on said intermediate layer.
Claim 10
Independent Claim
124 words
A method of improving the adherence of glass layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said glass layer, said intermediate layer being produced by polymerization of a low molecular organic vapor containing at least one member of the group consisting of an ester of silicic acid and a low boiling silicon oil, by means of a glow discharge in said low molecular organic vapor containing at least one member of the group consisting of an ester of silicic acid and a low boiling silicon oil, whereby said intermediate layer is deposited on said substratum, whereupon said glass layer is deposited on said intermediate layer.
Claim 11
Independent Claim
115 words
A method of improving the adherence of hard inorganic layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said inorganic layer, said intermediate layer being produced by polymerization of a low molecular organic vapor by means of a glow discharge in said low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, said glow discharge being performed in an organic vapor the partial pressure of which during the glow discharge is higher than 10 3 Torr when determined by a vacuummeter calibrated with air, whereupon said inorganic layer is deposited on said intermediate layer.
Claim 12
Independent Claim
115 words
A method of improving the adherence of hard inorganic layers which are vaporized in vacuum and deposited on substrata of plastics, wherein the improvement comprises the step of providing an intermediate layer between said substratum and said inorganic layer, said intermediate layer being produced by polymerization of a low molecular organic vapor by means of a glow discharge in said low molecular organic vapor, whereby said intermediate layer is deposited on said substratum, said glow discharge being performed in an organic vapor the partial pressure of which during the glow discharge is higher than 10 3 Torr when determined by a vacuummeter calibrated with air, whereupon said inorganic layer is deposited on said intermediate layer.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |