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Patent US5057587A successfully refreshed from Google Patents.
US5057587A
Expired / Lapsed
US
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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 17:05
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.
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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) | 1994-10-14 | 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 |