EP0137716A2
Expired / Lapsed
EP
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Optical adhesive composition
Assignee: NTT Inc
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Filing: 1984-09-05
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Granted: —
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Expires: 2004-09-05
Abstract
Abstract The adhesive composition or compound of the invention comprises an epoxy resin, a reactive diluent and a hardener, and at least one of said components contains fluorine atoms. The adhesive composition containing fluorine atoms, according to the invention, provides a cured or hardened composition having small refractive index due to the presence of fluorine atoms. The refractive index of the hardened product may be freely controlled within the range of n 23 D = 1.415 to n 23 D = 1.570. The adhesive composition may be applied for the production of optical members for use in a communication system utilizing optical fibers or a variety of optical instruments, and has improved heat resistance and adhesive property and is improved in matching of the refractive index with that of the material used for the optical member, such as optical fibers or glasses having lower refractive index used in a lens system.
Inventors
- 👤 Tooru Maruno
- 👤 Kouzaburou Nakamura
- 👤 Shigekuni Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 10:16
CPC Classifications
C; C09; C09J; C09J163/00; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/30; C08G59/32; C08G59/38
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
49 words
An adhesive composition for use in optical members, comprising a fluorinated epoxy resin represented by the following general formula (1) of: wherein n is an interger or a fraction of 0 to 7; a reactive diluent selected from the group consisting of derivatives of glycidyl ehters; and a hardener.
Claim 2
Dependent Claim
49 words
An adhesive composition for use in optical members, comprising a fluorinated epoxy resin represented by the following general formula (1) of: wherein n is an interger or a fraction of 0 to 7; a reactive diluent selected from the group consisting of derivatives of glycidyl ehters; and a hardener.
Claim 3
Dependent Claim
60 words
The adhesive composition for use in an optical member as claimed in claim 1, wherein said reactive diluent is one or more selected from the group consisting of butyl glycidyl ether, phenyl glycidyl ether and allyl glycidyl ether, and wherein the weight ratio of said reactive diluent to said polyfluorinated epoxy resin in said composition ranges within 5:95 to 25:75.
Claim 4
Dependent Claim
21 words
The adhesive composition for use in optical members claimed in claim 1, wherein said reactive diluent is diglycidyl ether of 2,2,3,3,4,4,5,5,6,6,7,7,-dodecafluorooctane-l,8-diol.
Claim 5
Dependent Claim
22 words
The adhesive composition for use in optical members as claimed in claim 1, wherein said reactive diluent is diglycidyl ether of butanediol.
Claim 6
Dependent Claim
19 words
The adhesive composition for use in optical members as claimed in claim 1, wherein said hardener is 4-{perfluoro-1,3-dimethyl-2-(1-methylethyl)-1-butenyl]-oxyphthalic anhydride.
Claim 7
Dependent Claim
56 words
The adhesive composition for use in optical members comprising: up to 100 parts, by weight, of a fluorinated epoxy resin represented by the following general formula (1) of: wherein n is an interger.or a fraction of 0 to 7; up to 100 parts, by weight of a reactive diluent; and 50 parts, weight, of a hardener.
Claim 8
Dependent Claim
56 words
The adhesive composition for use in optical members comprising: up to 100 parts, by weight, of a fluorinated epoxy resin represented by the following general formula (1) of: wherein n is an interger.or a fraction of 0 to 7; up to 100 parts, by weight of a reactive diluent; and 50 parts, weight, of a hardener.
Claim 9
Dependent Claim
28 words
The adhesive composition for use in optical members as claimed in claim 1, wherein said reactive diluent is diglycidyl ether of 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluorooctane-1,8-diol, and wherein said curing agent is
Claim 10
Dependent Claim
2 words
4-[perfluoro-1,3-dimethyl-2-(1-methylethyl)-1-butenyl]-oxyphthalic anhydride.
Claim 11
Dependent Claim
2 words
4-[perfluoro-1,3-dimethyl-2-(1-methylethyl)-1-butenyl]-oxyphthalic anhydride.
Claim 12
Dependent Claim
101 words
A process for the production of optical members, comprising the steps of: preparing a mixture of an adhesive composition essentially containing a diglycidyl ether selected from the group consisting of diglycidyl ether of bisphenol-AF and diglycidyl ether of 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluorooctane-1,8-diol; a reactive diluent selected from the group consisting of butyl glycidyl ether, phenyl glycidyl ether, allyl glycidyl ether, glycidyl ether of butane-diol and diglycidyl ether of 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluorooctane-1,8-diol and 4-[perfluoro-1,3-dimethyl-2-(1-methylethyl)-l-butenyl-)-oxyphthalic anhydride acting as a hardener; defoaming said mixture; coating the defoamed adhesive mixture on an optical member; and then heating said member and said adhesive mixture coated thereon to harden said adhesive mixture.
Claim 13
Dependent Claim
101 words
A process for the production of optical members, comprising the steps of: preparing a mixture of an adhesive composition essentially containing a diglycidyl ether selected from the group consisting of diglycidyl ether of bisphenol-AF and diglycidyl ether of 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluorooctane-1,8-diol; a reactive diluent selected from the group consisting of butyl glycidyl ether, phenyl glycidyl ether, allyl glycidyl ether, glycidyl ether of butane-diol and diglycidyl ether of 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluorooctane-1,8-diol and 4-[perfluoro-1,3-dimethyl-2-(1-methylethyl)-l-butenyl-)-oxyphthalic anhydride acting as a hardener; defoaming said mixture; coating the defoamed adhesive mixture on an optical member; and then heating said member and said adhesive mixture coated thereon to harden said adhesive mixture.
References Cited (Backward Citations)
No citation records indexed.
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