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US4694052A
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US
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Radiation-curable coating composition
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1985-06-25
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Granted: 1987-09-15
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Expires: 2005-06-25
Abstract
Abstract Disclosed herein is a coating composition which contains a urethane-modified (meth)acrylate compound and a mono(meth)acrylate and is curable upon its exposure to radiation. Also disclosed herein is a coating, especially, a primary coating for an optical fiber, which coating or cladding is composes of a cured material obtained by curing the composition through its exposure to radiation.
Inventors
- 👤 Sumio Hirose
- 👤 Isao Naruse
- 👤 Akio Matsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:54
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C08F299/04; C08F299/0485; C08F299/0492
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
Radiation-curable coating composition, which comprises: (A) a urethane-modified (meth)acrylate compound which has been prepared by reacting (a) a polyisocyanate compound containing two or more isocyanate groups per molecule, (b) a polyhydroxy compound containing two or more hydroxyl groups per molecule and (c) an unsaturated monohydroxy compound in amounts of 1.1 to 2.0 equivalents of the compound (a) and 0.1 to 1.2 equivalents of the compound (c), both per equivalent of the compound (b); and (B) a mono(meth)acrylate of the following general formula (I): ##STR3## wherein R 1 means ##STR4## R 2 denotes a hydrogen atom or methyl group, X is --CH 2 --CH 2 -- or ##STR5## l stands for an integer of 1 to 6, m means an integer of 3 to 5, n is an integer of 1 to 6, and l=n is 2 to 8, the amounts of the compounds (A) and (B) being 20 to 60 weight percent and 80 to 40 weight percent, respectively.
Claim 2
Dependent Claim
159 words
Radiation-curable coating composition, which comprises: (A) a urethane-modified (meth)acrylate compound which has been prepared by reacting (a) a polyisocyanate compound containing two or more isocyanate groups per molecule, (b) a polyhydroxy compound containing two or more hydroxyl groups per molecule and (c) an unsaturated monohydroxy compound in amounts of 1.1 to 2.0 equivalents of the compound (a) and 0.1 to 1.2 equivalents of the compound (c), both per equivalent of the compound (b); and (B) a mono(meth)acrylate of the following general formula (I): ##STR3## wherein R 1 means ##STR4## R 2 denotes a hydrogen atom or methyl group, X is --CH 2 --CH 2 -- or ##STR5## l stands for an integer of 1 to 6, m means an integer of 3 to 5, n is an integer of 1 to 6, and l=n is 2 to 8, the amounts of the compounds (A) and (B) being 20 to 60 weight percent and 80 to 40 weight percent, respectively.
Claim 3
Dependent Claim
22 words
The radiation curable coating composition as claimed in claim 1 wherein polyoxy compound (b) has a molecular weight of 700 or higher.
Claim 4
Dependent Claim
35 words
The radiation curable coating composition as claimed in claim 1 wherein the amounts of the compounds (a) and (c) are, respectively, 1.2 to 1.8 and 0.2 to 1.0 equivalent per equivalent of the compound (b).
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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) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |