US3955035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent resin composite
Assignee: Topcon Corp
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Filing: 1974-08-06
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Granted: 1976-05-04
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Expires: 1994-08-06
Abstract
Abstract Transparent resin composites comprising a substrate of a transparent plastic material coated with a cured film of at least one [(2,3-epoxypropoxy)alkyl]trialkoxysilane or of at least one [(2,3-epoxypropoxy)alkyl]trialkoxysilane and at least one transparent polymer compatible with said silane are provided. The resin composites have excellent abrasion resistance, surface hardness, heat resistance, chemical resistance, weathering resistance, etc. well retaining the transparency and other optical characteristics of the substrate resin. These resin composites can be used as transparent plastic panels, lenses, etc.
Inventors
- 👤 Akihiko Ito
- 👤 Isao Kaetsu
- 👤 Hiroshi Okubo
- 👤 Masamichi Kato
- 👤 Koichiro Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C09D183/06; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/269; Y10T428/31504; Y10T428/31511; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
A transparent resin composite comprising a substrate of a transparent plastic material coated with a cured film of at last one [(2,3-epoxypropoxy)alkyl]trialkoxysilane represented by the general formula: ##EQU2## whereby R is an alkylene group containing up to 4 carbon atoms and R' is an alkyl group containing up to 4 carbon atoms.
Claim 2
Dependent Claim
52 words
A transparent resin composite comprising a substrate of a transparent plastic material coated with a cured film of at last one [(2,3-epoxypropoxy)alkyl]trialkoxysilane represented by the general formula: ##EQU2## whereby R is an alkylene group containing up to 4 carbon atoms and R' is an alkyl group containing up to 4 carbon atoms.
Claim 3
Dependent Claim
87 words
The transparent resin composite as claimed in claim 1, wherein R of the general formula is one of methylene, ethylene and trimethylene and R' is one of methyl, ethyl, n-propyl and n-butyl; and the transparent plastic material is selected from a class consisting of poly(vinyl chloride) resin, poly(vinylidene chloride) resin, polycarbonate resin, poly(lower-alkyl acrylate) resins, poly(lower-alkyl methacrylate) resins, poly(diethyleneglycol bis(allyl carbonate)) resin, polystyrene resin, styrene-acrylonitrile copolymer resin, polyvinylbutyral resin, cellulose acetate resin, and polyester resin and the thickness of the cured coating film is 0.003 -2.0 mm.
Claim 4
Dependent Claim
73 words
The transparent resin composite as claimed in claim 2, wherein R of the general formula is one of trimethylene and ethylene, R' is one of methyl and ethyl, the transparent plastic material of the substrate is selected from a class consisting of polycarbonate resin poly(methyl acrylate) resin, poly(methyl methacrylate) resin, poly(ethyl acrylate) resin, poly(ethyl methacrylate) resin, poly(diethyleneglycol bis(allyl carbonate) resin, and the thickness of the cured coating film is 0.005 - 0.5 mm.
Claim 5
Dependent Claim
34 words
The transparent resin composite as claimed in claim 3, wherein R of the general formula is trimethylene and R' is methyl, and the thickness of the cured coating film is 0.01 - 0.2 mm.
Claim 6
Dependent Claim
66 words
A transparent resin composite comprising a substrate of a transparent plastic material coated with a cured film of at least one [(2,3-epoxypropoxy)alkyl]trialkoxysilane represented by the general formula: represented by the general formula: ##EQU3## whereby R is an alkylene group containing up to 4 carbon atoms and R' is an alkyl group containing up to 4 carbon atoms, and a transparent polymer which is compatible with [(2,3-epoxypropoxy)propyl]trialkoxysilanes.
Claim 7
Dependent Claim
66 words
A transparent resin composite comprising a substrate of a transparent plastic material coated with a cured film of at least one [(2,3-epoxypropoxy)alkyl]trialkoxysilane represented by the general formula: represented by the general formula: ##EQU3## whereby R is an alkylene group containing up to 4 carbon atoms and R' is an alkyl group containing up to 4 carbon atoms, and a transparent polymer which is compatible with [(2,3-epoxypropoxy)propyl]trialkoxysilanes.
Claim 8
Dependent Claim
111 words
The transparent composite resin material as claimed in claim 5, wherein R of the general formula is one of methylene, ethylene and trimethylene and R'is one of methyl, ethyl, n-propyl, and n-butyl; the transparent polymer compatible with [(2,3-epoxypropoxy)alkyl]trialkoxysilane is selected from a class consisting of polystyrene, poly(lower-alkyl acrylate), poly(lower-alkyl methacrylate), poly(gylcidyl methacrylate), cellulose nitrate, and cellulose acetate and the transparent plastic material of the substrate is selected from a class consisting of poly(vinyl chloride) resin, poly(lower-alkyl acrylate) resin, poly(lower-alkyl methacrylate) resin, poly(diethyleneglycol bis(allyl carbonate)) resin, polystyrene resin, styrene-acrylonitrile copolymer resin, polyvinylbutyral resin, cellulose acetate resin and polyester resin, and the thickness of the cured coating film is 0.003 - 2.0 mm.
Claim 9
Dependent Claim
96 words
The transparent composite resin material as claimed in claim 6, wherein R of the general formula is one of trimethylene and ethylene, R' is one of methyl and ethyl, the transparent polymer compatible with [(2,3-epoxypropoxy)alkyl]-trialkoxysilane is selected from a class consisting of poly(lower-alkyl acrylate), poly(lower-alkyl methacrylate), polystyrene and cellulose acetate, and the transparent plastic material of the substrate is selected from a class consisting of polycarbonate resin, poly(methyl acrylate) resin, poly(methyl methacrylate) resin, poly(ethyl acrylate) resin, poly(ethyl methacrylate) resin, poly(diethyleneglycol bis(allyl carbonate)) resin, and the thickness of the cured coating film is 0.005 - 0.5 mm.
Claim 10
Dependent Claim
35 words
The transparent composite resin material as claimed in claim 7, wherein R of the general formula is trimethylene and R' is methyl and the thickness of the cured coating film is 0.1 - 0.2 mm.
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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |