US5015709A
Expired / Lapsed
US
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Radiation-curable liquid resin for secondary coating lightwave guides
Assignee: Siemens AG
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Filing: 1988-12-19
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Granted: 1991-05-14
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Expires: 2008-12-19
Abstract
Abstract The invention provides a radiation-curable liquid resin for use as a secondary coating of lightwave guides which is a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a 1:2 addition compound of a diepoxide with a mean molecular weight≦1000 and a short-chain α,ω -diol with a mean molecular weight≦700 or with a 1:2 addition compound of a diepoxide with a mean molecular weight≦400 and a monovalent aliphatic alcohol with a mean molecular weight≦200, where the diepoxide is an aliphatic-aromatic or aromatic diglycidylether, an aliphatic or cycloaliphatic diepoxide or a silicon-organodiepoxide, and where the short-chain α,ω -diol is an αω -hydroxy-terminated polyoxyalkylene, an α,ω -hydroxy-terminated polyester, an α,ω -hydroxy-terminated polybutadiene, an α,ω -hydroxyterminated organo-functional polysiloxane or an α,ω -alkanediol with a mean molecular weight≦200.
Inventors
- 👤 Siegfried Birkle
- 👤 Hans-Dieter Feucht
- 👤 Rainer Kamps
- 👤 Eva Rissel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:07
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6407; C08G18/70; C08G18/81; C08G18/8108; C08G18/8116; C08G59/00; C08G59/02; C08G59/04; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1444; C08G59/1455; C08G59/1461; C08G59/1466; C08G59/1477; C08G59/18; C08G59/20; C08G59/22; G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3801; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10S525/921; Y10S525/922
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
131 words
A radiation-curable liquid resin useful as a secondary coating of lightwave guides, comprising a reaction product of (meth)-acrylic acid or (meth)-acrylic acid chloride or isocyanatoalkyl-(meth)-acrylate with an addition compound selected from the group consisting of: (a) a 1:2 addition compound of a diepoxide with a mean molecular weight ≦1000 and a short-chain α,ω-diol with a mean molecular weight ≦700, and (b) a 1:2 addition compound of a diepoxide with a mean molecular weight ≦400 and a monovalent aliphatic alcohol with a mean molecular weight ≦200, where the diepoxide as an aliphatic-aromatic or aromatic diglycidylether, an aliphatic or cycloaliphatic diepoxide or a silicon-organic diepoxide, and where the short-chain α,ω-diol is an α,ω-hydroxy-terminated polyoxyalkylene, an α,ω-hydroxy-terminated polyester, an α,ω-hydroxy-terminated polybutadiene, an α,ω-hydroxy-terminated organo-functional siloxane, or an α,ω-alkanediol with a mean molecular weight ≦200.
Claim 2
Dependent Claim
131 words
A radiation-curable liquid resin useful as a secondary coating of lightwave guides, comprising a reaction product of (meth)-acrylic acid or (meth)-acrylic acid chloride or isocyanatoalkyl-(meth)-acrylate with an addition compound selected from the group consisting of: (a) a 1:2 addition compound of a diepoxide with a mean molecular weight ≦1000 and a short-chain α,ω-diol with a mean molecular weight ≦700, and (b) a 1:2 addition compound of a diepoxide with a mean molecular weight ≦400 and a monovalent aliphatic alcohol with a mean molecular weight ≦200, where the diepoxide as an aliphatic-aromatic or aromatic diglycidylether, an aliphatic or cycloaliphatic diepoxide or a silicon-organic diepoxide, and where the short-chain α,ω-diol is an α,ω-hydroxy-terminated polyoxyalkylene, an α,ω-hydroxy-terminated polyester, an α,ω-hydroxy-terminated polybutadiene, an α,ω-hydroxy-terminated organo-functional siloxane, or an α,ω-alkanediol with a mean molecular weight ≦200.
Claim 3
Dependent Claim
19 words
A radiation-curable liquid resin according to claim 1, wherein the aliphatic-aromatic diglycidylether has hetero atoms in the aliphatic chain.
Claim 4
Dependent Claim
15 words
A radiation-curable liquid resin according to claim 2, wherein the hetero atoms are oxygen atoms.
Claim 5
Dependent Claim
29 words
A radiation-curable liquid resin according to claim 1, wherein the diepoxide is the diglycidylether of: a bisphenol A-propyleneoxide addition compound; bisphenol A- or bisphenol F-diglycidylether; 1,2,7,8-diepoxyoctane, 3,4-epoxycyclohexylmethyl-3,,4,-epoxy-cyclohexanecarboxylate or bis-(3-glycidoxypropyl)-tetramethyldisiloxane.
Claim 6
Dependent Claim
25 words
A radiation-curable liquid resin according to claim 1, wherein the short-chain α,ω-diol is polytetrahydrofuran, polypropylene glycol, an ethyleneoxide-tetrahydrofuran-copolymer, polycaprolactonediol, 1,3-bis-(4-hydroxybutyl)-tetramethyldisiloxane, ethyleneglycol, 1,3-propanediol, 1,4-butanediol, or 1,10-decanediol.
Claim 7
Dependent Claim
25 words
A radiation-curable liquid resin according to claim 3, wherein the short-chain α,ω-diol is polytetrahydrofuran, polypropylene glycol, an ethyleneoxide-tetrahydrofuran-copolymer, polycaprolactonediol, 1,3-bis-(4-hydroxybutyl)-tetramethyldisiloxane, ethyleneglycol, 1,3-propanediol, 1,4-butanediol, or 1,10-decanediol.
Claim 8
Dependent Claim
25 words
A radiation-curable liquid resin according to claim 4, wherein the short-chain α,ω-diol is polytetrahydrofuran, polypropylene glycol, an ethyleneoxide-tetrahydrofuran-copolymer, polycaprolactonediol, 1,3-bis-(4-hydroxybutyl)-tetramethyldisiloxane, ethyleneglycol, 1,3-propanediol, 1,4-butanediol, or 1,10-decanediol.
Claim 9
Dependent Claim
16 words
A secondary coating for lightwave guides, comprising at least one radiation-cured resin according to claim 1.
Claim 10
Dependent Claim
16 words
A secondary coating for lightwave guides, comprising at least one radiation-cured resin according to claim 4.
Claim 11
Dependent Claim
16 words
A secondary coating for lightwave guides, comprising at least one radiation-cured resin according to claim 5.
Claim 12
Dependent Claim
11 words
A lightwave guide having a secondary coating according to claim 8.
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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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |