US4404075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable coating composition comprising three or more (meth) acryloyl polyfunctional monomer, phenol novolak epoxy (meth) acrylate oligomer, and a photoinitiator
Assignee: Panasonic Holdings Corp
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Filing: 1982-11-30
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Granted: 1983-09-13
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Expires: 2002-11-30
Abstract
Abstract There is provided a coating composition (B) consisting essentially of: a composition (A) and a photopolymerization initiating effective amount of a photoinitiator, said composition (A) containing: (i) 80 to 90% by weight of at least one polyfunctional monomer having three or more (meth)acryloyloxy radicals per molecule, (ii) 5 to 10% by weight of at least one acrylic monomer having two or less functional groups and (iii) 5 to 10% by weight of a phenol novolak epoxy (meth)acrylate oligomer of the formula: <IMAGE> where, X=H, CH3, X=H, CH3, Br and n=0-8 with the proportion of oligomer wherein n of 4</=n</=8 is more than 20 wt % with respect to the total amount of the novolak epoxy (meth)acrylate.
Inventors
- 👤 Junji Ikeda
- 👤 Keizi Saeki
- 👤 Tamotsu Wakahata
- 👤 Takao Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:24
CPC Classifications
C; C09; C09D; C09D4/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
116 words
A coating composition (B) consisting essentially of: a composition (A) and a photopolymerization initiating effective amount of a photoinitiator, said composition (A) containing: (i) 80 to 90% by weight of at least one polyfunctional monomer having three or more (meth)acryloyloxy radicals per molecule, (ii) 5 to 10% by weight of at least one acrylic monomer having two or less functional groups and (iii) 5 to 10% by weight of a phenol novolak epoxy (meth)acrylate oligomer of the formula: ##STR4## where, X=H, CH 3 , X=H, CH 3 , Br and n=0-8 with the proportion of oligomer wherein n of 4≦n≦8 is more than 20 wt% with respect to the total amount of the novolak epoxy (meth)acrylate.
Claim 2
Dependent Claim
116 words
A coating composition (B) consisting essentially of: a composition (A) and a photopolymerization initiating effective amount of a photoinitiator, said composition (A) containing: (i) 80 to 90% by weight of at least one polyfunctional monomer having three or more (meth)acryloyloxy radicals per molecule, (ii) 5 to 10% by weight of at least one acrylic monomer having two or less functional groups and (iii) 5 to 10% by weight of a phenol novolak epoxy (meth)acrylate oligomer of the formula: ##STR4## where, X=H, CH 3 , X=H, CH 3 , Br and n=0-8 with the proportion of oligomer wherein n of 4≦n≦8 is more than 20 wt% with respect to the total amount of the novolak epoxy (meth)acrylate.
Claim 3
Dependent Claim
12 words
The coating composition of claim 1, wherein said photoinitiator is a benzoin.
Claim 4
Dependent Claim
13 words
The coating composition of claim 2, wherein the benzoin is benzoin isopropyl ether.
Claim 5
Dependent Claim
24 words
The coating composition of claim 3, wherein the benzoin isopropyl ether is employed at 5 parts by weight per 100 parts of composition (A).
Claim 6
Dependent Claim
17 words
The coating composition of claim 1, wherein the molecular weight of said oligomer is 10,000 or less.
Claim 7
Dependent Claim
17 words
The coating composition of claim 1, wherein said coating composition (B) is mixed with an alcoholic solvent.
Claim 8
Dependent Claim
21 words
The coating composition of claim 1, wherein said polyfunctional monomers (i) are one or more of trimethylolpropanetriacrylate, dipentaerythritolhydroxytetraacrylate and epoxide acrylate.
Claim 9
Dependent Claim
24 words
The coating composition of claim 7, wherein said polyfunctional (meth)acrylate (i) is dipentaerythritolhydroxytetra (meth)acrylate or trimethylolpropanetri (meth)acrylate in a ratio of 80/20 to 0/100.
Claim 10
Dependent Claim
23 words
The coating composition of claim 1, wherein said acrylic monomers (ii) contain one or more (meth)acrylic acid or mono- or di-(meth)acrylic ester groups.
Claim 11
Dependent Claim
28 words
The coating composition of claim 9, wherein said mono- or di-(meth)acrylates are alkyl, cycloalkyl, glycyzirtetrahydrofurfuryl, alkyl, hydroxyalkyl, alkylene glycol, polyoxyalkylene glycol, trimethylolpropane, pentaerythritol, or urethane mono- or di-(meth)acrylates.
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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) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |