Patent US4397723A successfully refreshed from Google Patents.
US4397723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions and resin moldings using same
Assignee: Panasonic Holdings Corp
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Filing: 1981-03-24
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Granted: 1983-08-09
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Expires: 2001-03-24
Abstract
Abstract Coating compositions comprising 100 parts by weight of a mixture composed of 50-98% by weight of at least one multifunctional monomer selected from compounds having 3 or more acryloyloxy groups and/or methacryloxy groups in 1 molecule, and 2-50% by weight of a bifunctional oligomer represented by the following general formula <IMAGE> <IMAGE> +TR <IMAGE> wherein R1 represents hydrogen or methyl, and n is an integer of 1 through 5, 0.01-10 parts by weight and polymerization inhibitor 10 through 2,000 ppm of a polymerization inhibitor, and being capable of forming a bridge hardened film of superior abrasion resistance, etc. by the application of activation energy rays, and resin moldings using the coating compositions.
Inventors
- 👤 Takao Inoue
- 👤 Tamotsu Wakahata
- 👤 Yukio Maeda
- 👤 Ikuo Niboshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:27
CPC Classifications
C; C09; C09D; C09D4/00; C09D4/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A coating composition comprising (1) 100 parts by weight of a mixture which comprises 50-98% by weight of at least one polyfunctional monomer having at least 3 acryloyloxy groups and/or methacryloyloxy groups per molecule, and 2-50% by weight of a bifunctional oligomer of the formula ##STR4## wherein R 1 represents hydrogen or methyl, and n is an integer of 1 through 5, said percentages by weight being based on the total weight of said polyfunctional monomer and bifunctional oligomer, (2) 0.01-10 parts by weight of a light sensitizer, and (3) 10-2,000 ppm of a polymerization inhibitor, said composition being capable of forming a bridge hardened film by the application thereto of activation energy rays.
Claim 2
Dependent Claim
114 words
A coating composition comprising (1) 100 parts by weight of a mixture which comprises 50-98% by weight of at least one polyfunctional monomer having at least 3 acryloyloxy groups and/or methacryloyloxy groups per molecule, and 2-50% by weight of a bifunctional oligomer of the formula ##STR4## wherein R 1 represents hydrogen or methyl, and n is an integer of 1 through 5, said percentages by weight being based on the total weight of said polyfunctional monomer and bifunctional oligomer, (2) 0.01-10 parts by weight of a light sensitizer, and (3) 10-2,000 ppm of a polymerization inhibitor, said composition being capable of forming a bridge hardened film by the application thereto of activation energy rays.
Claim 3
Dependent Claim
38 words
A coating composition in accordance with claim 1, wherein said mixture in (1) further comprises 5-60% by weight of a bifunctional (meth)acrylate monomer based on the total weight of said polyfunctional monomer, bifunctional oligomer and bifunctional (meth)acrylate monomer.
Claim 4
Dependent Claim
38 words
A coating composition in accordance with claim 1, wherein said mixture in (1) further comprises 2-50% by weight of a monofunctional (meth)acrylate monomer based on the total weight of said polyfunctional monomer, bifunctional oligomer and monofunctional (meth)acrylate monomer.
Claim 5
Dependent Claim
41 words
A coating composition in accordance with claim 2, wherein said mixture in (1) further comprises 2-50% by weight of a monofunctional (meth)acrylate monomer based on the total weight of said polyfunctional monomer, bifunctional oligomer, bifunctional (meth)acrylate monomer and monofunctional (meth)acrylate monomer.
Claim 6
Dependent Claim
30 words
A coating composition in accordance with claim 1, 2, 3 or 4, wherein said polyfunctional monomer is pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, or dipentaerythritol hexa(meth)acrylate.
Claim 7
Dependent Claim
75 words
A coated resin molding obtained by coating a resin molding with a mixture of the coating composition of 1, 2, 3 or 4 and 5-70% by weight, based on the weight of said mixture, of a mixed organic solvent containing at least 60% by weight, based on the weight of the mixed organic solvent, of an alcohol having 2-4 carbon atoms, and irradiating the thus coated molding with activation energy rays to harden the coating.
Claim 8
Dependent Claim
75 words
A coated resin molding obtained by coating a resin molding with a mixture of the coating composition of 1, 2, 3 or 4 and 5-70% by weight, based on the weight of said mixture, of a mixed organic solvent containing at least 60% by weight, based on the weight of the mixed organic solvent, of an alcohol having 2-4 carbon atoms, and irradiating the thus coated molding with activation energy rays to harden the coating.
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) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |