US4672080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocurable resin composition prepared from urethane acrylate oligomer containing bisphenols
Assignee: Nippon Paper Industries Co Ltd
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Filing: 1985-09-12
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Granted: 1987-06-09
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Expires: 2005-09-12
Abstract
Abstract A photo-curable resin composition containing urethane oligomer compounds represented by a following general formula (I) <IMAGE> (I) <IMAGE> [wherein R1 indicates -H or -CH3. R2 indicates an alkylene group with or without side chain having 1 to 6 carbon atoms or -(-CH2CH2-O-)m-CH2CH2-, m=1-5. R3 indicates a substituent selected from a group comprising <IMAGE> <IMAGE> <IMAGE> <IMAGE> <IMAGE> <IMAGE> +TR <IMAGE> n is a number selected from integers 1 to 10 so as the molecular weight of compound to be not more than 5000] as a part or the whole of base resin.
Inventors
- 👤 Yoshiji Masaoka
- 👤 Motonobu Kobo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:25
CPC Classifications
C; C09; C09D; C09D4/00; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3863; C08G18/3865; C08G18/3872; C08G18/67; C08G18/671; C08G18/672; C09J; C09J4/00; Y; Y10; Y10S; Y10S525/00; Y10S525/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A photo-curable resin composition consisting of a urethane oligomer, a reactive diluent of trimethylolpropane triacrylate or tetrahydrofurfuryl acrylate or a mixture thereof and a photoinitiator of methyl o-benzoyl-benzoate, wherein said urethane oligomer is obtained by reacting tolylenediisocyanate or isophoronediisocyanate or a mixture thereof, bisphenol S and 2-hydroxyethylacrylate, wherein the weight ratio of urethane oligomer to reactive diluent is about 1:1.
Claim 2
Dependent Claim
60 words
A photo-curable resin composition consisting of a urethane oligomer, a reactive diluent of trimethylolpropane triacrylate or tetrahydrofurfuryl acrylate or a mixture thereof and a photoinitiator of methyl o-benzoyl-benzoate, wherein said urethane oligomer is obtained by reacting tolylenediisocyanate or isophoronediisocyanate or a mixture thereof, bisphenol S and 2-hydroxyethylacrylate, wherein the weight ratio of urethane oligomer to reactive diluent is about 1:1.
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) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |