US4854666A
Expired / Lapsed
US
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Photosetting resin composition
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1988-01-27
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Granted: 1989-08-08
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Expires: 2008-01-27
Abstract
Abstract This invention provides a photosetting resin composition suitable as a coating material for optical transmission glass fibers. Owing to the inclusion of a urethane-modified (meth)acrylate and a monoacrylate represented by the following general formula [I]: CH.sub.2 ═CHCO(OC.sub.2 H.sub.4).sub.n OCH.sub.2 CH(C.sub.2 H 5 )(CH 2 ) 3 CH 3 [I] wherein n stands for an integer of 1-8, the photosetting resin composition enjoys a high photosetting speed and permits the formation of a coating film of a low modulus of elasticity. Moroever, the modulus of elasticity of the coating film has small temperature dependency at low temperatures. The present invention can hence provide light-transmitting glass fibers having excellent characteristics in optical transmission. The preferred monomer has been identified in the resin parts as 2-ethyl hexoxy ethyl acrylate, and also as 2-(2-ethylhexoxy) ethyl acrylate, and further as 2-[(2-ethylhexyl)oxy]ethyl acrylate.
Inventors
- 👤 Yoshiaki Kohara
- 👤 Kazuya Shinkoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/28; C08F220/282; C08F220/34; C08F220/343; C08F299/00; C08F299/02; C08F299/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31598; Y10T428/31601
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
34 words
A photosetting resin composition comprising a urethane-modified (meth)acrylate and a monoacrylate represented by the following general formula [I]: CH.sub.2 ═CHCO(OC.sub.2 H.sub.4).sub.n OCH.sub.2 CH(C.sub.2 H.sub.5)(CH.sub.2).sub.3 CH.sub.3 [I] wherein n stands for an integer of 1-8.
Claim 2
Dependent Claim
34 words
A photosetting resin composition comprising a urethane-modified (meth)acrylate and a monoacrylate represented by the following general formula [I]: CH.sub.2 ═CHCO(OC.sub.2 H.sub.4).sub.n OCH.sub.2 CH(C.sub.2 H.sub.5)(CH.sub.2).sub.3 CH.sub.3 [I] wherein n stands for an integer of 1-8.
Claim 3
Dependent Claim
30 words
The composition as claimed in claim 1, comprising 20-60 parts by weight of said urethane-modified (meth)acrylate and 80-40 parts by weight of said monoacrylate represented by the general formula [I].
Claim 4
Dependent Claim
58 words
The composition as claimed in claim 1, wherein said urethane-modified (meth)acrylate has been obtained by reacting (a) a polyisocyanate compound containing at least two isocyanate groups per molecule, (b) a polyhydroxy compound containing at least two hydroxyl groups per molecule and (c) an unsaturated monohydroxy compound containing one hydroxyl group and at least one (meth)acryloyl group per molecule.
Claim 5
Dependent Claim
48 words
The composition as claimed in claim 3, wherein said polyisocyanate compound is a diisocyanate compound, the dimer or trimer of a diisocyanate compound, a reaction product of a diisocyanate and a polyol, or a reaction product of the dimer or trimer of a diisocyanate compound and a polyol.
Claim 6
Dependent Claim
39 words
The composition as claimed in claim 3, wherein said polyhydroxy compound is a polyether polyol, a polyester polyol, a polycaprolactone polyol or a saturated polyolefin containing a terminal hydroxyl group, and has a molecular weight of at least 700.
Claim 7
Dependent Claim
33 words
The composition as claimed in claim 3, wherein said unsaturated monohydroxy compound is selected from hydroxyalkyl (meth)acrylates, N-hydroxyalkyl (meth)acrylamides, (poly)alkyleneglycol mono(meth)acrylates, trimethylolpropane di(meth)acrylates, and equimolar reaction products of glycidyl (meth)acrylates and (meth)acrylic acid.
Claim 8
Dependent Claim
33 words
The composition as claimed in claim 3, wherein the ratio of said polyisocyanate compound (a), polyhydroxy compound (b) and unsaturated monohydroxy compound (c) is 1.1-2.0 : 1 : 0.1-1.2 in terms of equivalent.
Claim 9
Dependent Claim
30 words
The composition as claimed in claim 3, wherein said reaction has been conducted at 20-150° C. in the presence of a catalyst for urethane-modifying reaction and a radical polymerization inhibitor.
Claim 10
Dependent Claim
16 words
The composition as claimed in claim 1, further comprising 1-10 wt. % of a photopolymerization initiator.
Claim 11
Dependent Claim
16 words
An optical transmission glass fiber coated with the photosetting resin composition as claimed in claim 1.
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) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |