US5057587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-curable liquid resin for secondary coating of lightwave guides
Assignee: Siemens AG
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Filing: 1988-12-16
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Granted: 1991-10-15
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Expires: 2008-12-16
Abstract
Abstract The invention provides a radiation-curable liquid resin useful as a secondary coating of lightwave guides. The resin is a reaction product of (meth)acrylic acid or glyceroldi (meth)acrylate or Pentaerythritoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an α, ω-diol with a mean molecular weight between 600 and 3000, or, a reaction product of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion product of the 2:1 addition compound and a low-molecular monovalent alcohol (C 1 to C 10 ), a low-molecular bivalent alcohol (C 2 to C 4 ) or water, where the diepoxide is an aromatic diglycidylether and the α,ω-diol is an α, ω-hydroxy-terminated polyoxyalkylene, an α, ω-hydroxy-terminated polyester, an α,ω-hydroxy-terminated polybutadiene or an α,ω-hydroxy-terminated organo-functional polysiloxane.
Inventors
- 👤 Siegfried Birkle
- 👤 Hans-Dieter Feucht
- 👤 Rainer Kamps
- 👤 Eva Rissel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:53
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/1466; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/58; C08G18/581; C08G18/70; C08G18/81; C08G18/8108; C08G18/8116; C08G59/02; C08G59/04; C08G59/1444; C08G59/1477; C08G59/18; C08G59/20; C08G59/22; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A radiation-curable liquid resin useful as a secondary coating of lightwave guides comprising a reaction product selected from the group consisting of an adduct (a) of glyceroldi(meth)acrylate or pentaerythzitoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an α,ω-diol with a mean molecular weight between 600 and 3000, and an adduct (b) of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion produce of the 2:1 addition compound and a low-molecular monovalent alcohol (C 1 to C 10 ) or a low-molecular bivalent alcohol (C 2 to C 4 ) or water, where the diepoxide is an aromatic diglycidylether and the α,ω-diol is an α,ω-hydroxy-terminated polyoxyalkylene, an α,ω-hydroxy-terminated polyester, an α,ω-hydroxy-terminated polybutadiene, or an α,ω-hydroxy-terminated organo-functional polysiloxane.
Claim 2
Dependent Claim
119 words
A radiation-curable liquid resin useful as a secondary coating of lightwave guides comprising a reaction product selected from the group consisting of an adduct (a) of glyceroldi(meth)acrylate or pentaerythzitoltri(meth)acrylate with a 2:1 addition compound of a diepoxide and an α,ω-diol with a mean molecular weight between 600 and 3000, and an adduct (b) of (meth)acrylic acid or -acid chloride or isocyanatoalkyl-(meth)acrylate with a conversion produce of the 2:1 addition compound and a low-molecular monovalent alcohol (C 1 to C 10 ) or a low-molecular bivalent alcohol (C 2 to C 4 ) or water, where the diepoxide is an aromatic diglycidylether and the α,ω-diol is an α,ω-hydroxy-terminated polyoxyalkylene, an α,ω-hydroxy-terminated polyester, an α,ω-hydroxy-terminated polybutadiene, or an α,ω-hydroxy-terminated organo-functional polysiloxane.
Claim 3
Dependent Claim
17 words
A radiation-curable liquid resin according to claim 1, wherein the diepoxide is bisphenol A- or bisphenol F-diglycidylether.
Claim 4
Dependent Claim
27 words
A radiation-curable liquid resin according to claim 1 wherein the α,ω-diol is polytetrahydrofuran, polypropyleneglycol, an ethyleneoxide-tetrahydrofuran copolymer, polycaprolactonediol or a linear polydimethylsiloxane with terminal primary hydroxyalkyl groups.
Claim 5
Dependent Claim
27 words
A radiation-curable liquid resin according to claim 2 wherein the α,ω-diol is polytetrahydrofuran, polypropyleneglycol, an ethyleneoxide-tetrahydrofuran copolymer, polycaprolactonediol or a linear polydimethylsiloxane with terminal primary hydroxyalkyl groups.
References Cited (Backward Citations)
US3264370A
Cited
US3600290A
Cited
US4099837A
Cited
US4221892A
Cited
US4311726A
Cited
US4383091A
Cited
US4718748A
Cited
EP0204497A1
Cited
EP0206159A2
Cited
EP0235772A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |