Patent US5136679A successfully refreshed from Google Patents.
US5136679A
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US
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Optical glass fibre having a synthetic resin coating and curable elastomer forming material
Assignee: Plasma Optical Fibre BV
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Filing: 1990-06-29
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Granted: 1992-08-04
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Expires: 2010-06-29
Abstract
Abstract The invention relates to an optical glass fibre 1 having a synthetic resin coating which consists of at least two layers 2 and 3 in which the first layer 2 is formed from an elastomer forming material which can be cured by exposure to actinic radiation, and in which the optical glass fibre exhibits a great tensile strength, a small risk of static fatigue fracture and a low ageing rate, owing to the fact that the synthetic resin composition comprises between 0.1 and 5% by weight of one or more phosphorus compounds of the following structural formula: <IMAGE> wherein n has a value of 1 or 2 and wherein R represents an organic group, preferably an organic group which co-reacts during curing of the elastomer forming material and is built into the polymeric network thus formed.
Inventors
- 👤 Dirk J. Broer
- 👤 Petrus C. P. Bouten
- 👤 Cornelis M. G. Jochem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:10
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/1065; C08; C08F; C08F299/00; C08F299/02; C08F299/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2962; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
An optical glass fiber of improved strength having: (1) a first coating layer of a synthetic rubber having a modulus of elasticity of from 1 to 10 MPa and (2) a second coating layer of a synthetic resin having a modulus of elasticity exceeding 100 MPa, at least the first coating layer of synthetic rubber being formed from an elastomer-forming material comprising a polyurethane acrylate curable by actinic radiation, and a total amount of 0.1 to 5% by weight of one or more compounds effective to improve adhesion between said first layer and said glass fiber selected from phophorous compounds of the following structural formula: ##STR7## wherein n has a value of 1 or 2 and wherein R is an organic group.
Claim 2
Dependent Claim
122 words
An optical glass fiber of improved strength having: (1) a first coating layer of a synthetic rubber having a modulus of elasticity of from 1 to 10 MPa and (2) a second coating layer of a synthetic resin having a modulus of elasticity exceeding 100 MPa, at least the first coating layer of synthetic rubber being formed from an elastomer-forming material comprising a polyurethane acrylate curable by actinic radiation, and a total amount of 0.1 to 5% by weight of one or more compounds effective to improve adhesion between said first layer and said glass fiber selected from phophorous compounds of the following structural formula: ##STR7## wherein n has a value of 1 or 2 and wherein R is an organic group.
Claim 3
Dependent Claim
33 words
An optical glass fibre as claimed in claim 1 wherein R is an organic group which coreacts during curing of the curable elastomer-forming material and is built into the polymeric network thus formed.
Claim 4
Dependent Claim
32 words
An optical glass fibre as claimed in claim 2, wherein the curable elastomer-forming material comprises a polyurethane acrylate and R is an organic group which comprises at least one acrylate ester group.
Claim 5
Dependent Claim
16 words
An optical glass fibre as claimed in claim 3, wherein R is a 2-acryloxy ethylate group.
Claim 6
Dependent Claim
25 words
An optical glass fibre as claimed in claim 1, wherein the curable elastomer-forming material comprises up to 2% by weight of a poly(dimethyl siloxane-co-ethyleneoxide) acrylate.
Claim 7
Dependent Claim
195 words
An optical glass fiber of improved strength having: (1) a first coating layer of a synthetic rubber having a modulus of elasticity of from 1 to 10 MPa formed from a curable elastomer-forming material which comprises an oligomeric urethane acrylate and a monomeric acrylate, the oligomeric urethane acrylate being polyurethane acrylate having a number-averaged molecular weight in excess of 3000, of the following structural formula: ##STR8## wherein R 1 is selected from the group formed by polyether chains and polyester chains having a number-averaged molecular weight in excess of 2500wherein R 2 is a bivalent radical of a disocyanate and wherein R 3 is a bivalent radical of a dihydric alcohol, (2) a second coating of a synthetic resin having a modulus of elasticity exceeding 100 MPa; at least the first coating layer being cured by exposure to actinic radiation; said elastomer forming material containing from about 0.1 to 5% by weight of one or more phosphorous compounds effective to improve adhesion between said first layer and said glass fiber selected from compounds having the following general structural formula: ##STR9## wherein n is an integer of 1 or 2 and R is an organo group.
Claim 8
Dependent Claim
195 words
An optical glass fiber of improved strength having: (1) a first coating layer of a synthetic rubber having a modulus of elasticity of from 1 to 10 MPa formed from a curable elastomer-forming material which comprises an oligomeric urethane acrylate and a monomeric acrylate, the oligomeric urethane acrylate being polyurethane acrylate having a number-averaged molecular weight in excess of 3000, of the following structural formula: ##STR8## wherein R 1 is selected from the group formed by polyether chains and polyester chains having a number-averaged molecular weight in excess of 2500wherein R 2 is a bivalent radical of a disocyanate and wherein R 3 is a bivalent radical of a dihydric alcohol, (2) a second coating of a synthetic resin having a modulus of elasticity exceeding 100 MPa; at least the first coating layer being cured by exposure to actinic radiation; said elastomer forming material containing from about 0.1 to 5% by weight of one or more phosphorous compounds effective to improve adhesion between said first layer and said glass fiber selected from compounds having the following general structural formula: ##STR9## wherein n is an integer of 1 or 2 and R is an organo group.
Claim 9
Dependent Claim
41 words
An optical glass fiber as claimed in claim 6 wherein in said polyurethane acrylate formula R 1 is selected from the group of ##STR10## wherein the average value of n exceeds 90 and wherein the average value of m exceeds 30.
Claim 10
Dependent Claim
19 words
An optical glass fiber as claimed in claim 7 wherein R 2 is selected from the group of ##STR11##
Claim 11
Dependent Claim
19 words
An optical glass fiber as claimed in claim 7 wherein R 2 is selected from the group of ##STR12##
Claim 12
Dependent Claim
33 words
An optical glass fiber as claimed in claim 6 wherein R 3 is selected from the group of --(CH 2 --CH 2 --O) p -- and ##STR13## wherein p is at least 1.
Claim 13
Dependent Claim
40 words
An optical glass fiber as claimed in claim 6 wherein in the phosphorus compound structural formula R is selected from the group of acrylate ester, alkyl, vinyl and vinyl-aromatic groups, at least one R group being an acrylate ester group.
Claim 14
Dependent Claim
27 words
An optical glass fiber as claimed in claim 6 wherein said phosphorus compound is selected from the group of mono-2-acryloxy ethyl phosphate, di-2-acryloxyethyl phosphate and mixtures thereof.
Claim 15
Dependent Claim
18 words
An optical glass fiber as claimed in claim 12 wherein said curable elastomer-forming material comprises a polyetherurethane acrylate.
Claim 16
Dependent Claim
29 words
An optical glass fiber as claimed in claim 13 wherein said curable elastomer-forming material further comprises up to 2% by weight of a poly (dimethyl siloxane co-ethylene oxide) acrylate.
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) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |