US4884866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorine-containing resin composition having low refractive index
Assignee: DIC Corp
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Filing: 1988-08-26
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Granted: 1989-12-05
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Expires: 2008-08-26
Abstract
Abstract An active energy ray-curable resin composition which gives a cured product having a refractive index of not more than 1.44 comprises (I) a fluorine-containing polymer composed of (A) and at least one of (B) and (C): (A) a fluorine-containing (meth)acrylate, (B) an alpha,beta-ethylenically unsaturated dicarboxylic acid ester and (C) a mono(meth)acrylate and having a fluorine atom content of at least 30% by weight, (II) a fluorine-containing (meth)acrylate, (III) a mono(meth)acrylate and (IV) a polyfunctional monomer containing at least two (meth)acryloyl groups in the molecule. Optical fibers are produced by coating the above composition on a core material and irradiating active energy rays onto the coating to form a cured cladding of the composition.
Inventors
- 👤 Yutaka Hashimoto
- 👤 Masayuki Kamei
- 👤 Toshihiko Umaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:01
CPC Classifications
C; C08; C08L; C08L35/00; C08F; C08F265/00; C08F265/04; C08F265/06; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/105; C08L27/00; C08L27/02; C08L27/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
An optical fiber formed by the process comprising: coating an optical fiber core with an active energy ray-curable resin composition which gives a cured product having a refractive index of not more than 1.44, said composition comprising (I) a fluorine-containing polymer composed of (A) a fluorine-containing (meth)acrylate, and at least one of (B) an alpha,beta-ethylenically unsaturated dicarboxylic acid ester and (C) a non-fluorine-containing mono(meth)acrylate, and having a fluorine atom content of at least 30% by weight, (II) a fluorine-containing (meth)acrylate, (III) a non-fluorine-containing mono(meth)acrylate and (IV) a polyfunctional monomer containing at least two (meth)acryloyl groups in the molecule; and thereafter irradiating active energy rays onto the coating to cure it.
Claim 2
Dependent Claim
110 words
An optical fiber formed by the process comprising: coating an optical fiber core with an active energy ray-curable resin composition which gives a cured product having a refractive index of not more than 1.44, said composition comprising (I) a fluorine-containing polymer composed of (A) a fluorine-containing (meth)acrylate, and at least one of (B) an alpha,beta-ethylenically unsaturated dicarboxylic acid ester and (C) a non-fluorine-containing mono(meth)acrylate, and having a fluorine atom content of at least 30% by weight, (II) a fluorine-containing (meth)acrylate, (III) a non-fluorine-containing mono(meth)acrylate and (IV) a polyfunctional monomer containing at least two (meth)acryloyl groups in the molecule; and thereafter irradiating active energy rays onto the coating to cure it.
Claim 3
Dependent Claim
54 words
The optical fiber of claim 1, wherein the fluorine-containing (meth)acrylate (A) and the fluorine-containing (meth)acrylate (II) are compounds represented by the general formula: ##STR22## wherein RF represents a fluorinated aliphatic group having 1 to 20 carbon atoms, X represents a divalent linking group, and R 1 represents H, CH 3 , Cl or F.
Claim 4
Dependent Claim
24 words
The optical fiber of claim 2, wherein X is --CH 2 -- m where m is 0 or an integer of 1 to 6.
Claim 5
Dependent Claim
108 words
The optical fiber of claim 1, 2 or 3, wherein the fluorine-containing polymer (I) is composed of (A) and (B) or (A) and (B) and (C) wherein the alpha,beta-ethylenically unsaturated dicarboxylic acid ester (B) is a compound represented by the general formula: ##STR23## wherein R 3 and R 4 are identical or different and each represents H, F, Cl or CH 3 , and R 5 and R 6 each represent H or an alkyl or fluoroalkyl group having 1 to 20 carbon atoms, and R 5 and R 6 are identical or different, and when either one of them is H, the other is other than H.
Claim 6
Dependent Claim
21 words
The optical fiber of claim 4, wherein R 5 and R 6 are alkyl groups having 3 to 8 carbon atoms.
Claim 7
Dependent Claim
52 words
The optical fiber of any one of claims 1 to 3, wherein the fluorine-containing polymer (I) is composed of (A) and (C) or (A) and (B) and (C) wherein the mono(meth)acrylate (C) and the mono(meth)acrylate (III) are mono(meth)acrylate compounds having a substituent with 3 to 12 carbon atoms at the ester moiety.
Claim 8
Dependent Claim
26 words
The optical fiber of claim 6, wherein the substituent in the ester moiety of the mono(meth) acrylate (C) and the mono(meth)acrylate (III) has a cyclic structure.
Claim 9
Dependent Claim
17 words
The optical fiber of claim 7, wherein the mono(meth)acrylate (C) and/or the mono(meth)acrylate (III) is isobornyl (meth)acrylate.
Claim 10
Dependent Claim
17 words
The optical fiber of claim 7, wherein the mono(meth)acrylate (C) and/or the mono(meth)acrylate (III) is dicyclopentenyl (meth)acrylate.
Claim 11
Dependent Claim
23 words
The optical fiber of claim 7, wherein the mono(meth)acrylate (C) and/or the mono(meth)acrylate (III) is a combination of isobornyl (meth)acrylate and dicyclopentenyl (meth)acrylate.
Claim 12
Dependent Claim
17 words
The optical fiber of claim 7, wherein the mono(meth)acrylate (C) and/or the mono(meth)acrylate (III) is dicyclopentanyl (meth)acrylate.
Claim 13
Dependent Claim
23 words
The optical fiber of claim 7, wherein the mono(meth)acrylate (C) and/or the mono(meth)acrylate (III) is a combination of dicyclopentanyl (meth)acrylate and dicyclopentenyl (meth)acrylate.
Claim 14
Dependent Claim
26 words
The optical fiber of any one of claims 1 to 3, wherein the polyfunctional monomer (IV) is a compound having a methyl group in the molecule.
References Cited (Backward Citations)
US4564263A
Cited
US4511209A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |