Patent US2931953A successfully refreshed from Google Patents.
US3945833A
Expired / Lapsed
US
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Photosensitive coating composition
Assignee: Artience Co Ltd
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Filing: 1974-09-04
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Granted: 1976-03-23
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Expires: 1994-09-04
Abstract
Abstract A photosensitive coating composition comprising (1) a prepolymer containing radically cross-linkable ethylenically unsaturated double bonds and (2) a sensitizer which comprises predominantly a mixture of (a) benzophenone, halogenated benzophenone or a combination thereof and (b) 4,4'-bis(diethylamino)benzophenone in a weight ratio of about 1:2 to 10:1.
Inventors
- 👤 Masujiro Sumita
- 👤 Ryozo Konno
- 👤 Toru Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:59
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/117
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A photosensitive coating composition comprising 1. a prepolymer containing radically cross-linkable ethylenically unsaturated double bonds, and 2. a sensitizer which comprises a mixture of (a) a halogenated benzophenone (b) 4,4'-bis(diethylamino)benzophenone in a weight ratio of (a) to (b) of about 1:2 to 10:1.
Claim 2
Dependent Claim
43 words
A photosensitive coating composition comprising 1. a prepolymer containing radically cross-linkable ethylenically unsaturated double bonds, and 2. a sensitizer which comprises a mixture of (a) a halogenated benzophenone (b) 4,4'-bis(diethylamino)benzophenone in a weight ratio of (a) to (b) of about 1:2 to 10:1.
Claim 3
Dependent Claim
19 words
The photosensitive coating composition of claim 1, wherein the weight ratio of (a) to (b) is 1:1 to 9:1.
Claim 4
Dependent Claim
17 words
The photosensitive coating composition of claim 1, wherein said halogenated benzophenone is a bromobenzophenone or a chlorobenzophenone.
Claim 5
Dependent Claim
22 words
The photosensitive coating composition of claim 1, wherein said sensitizer comprises a mixture of (a) p-chlorobenzophenone or o-chlorobenzophenone and (b) 4,4'-bis(diethylamino) benzophenone.
Claim 6
Dependent Claim
68 words
The photosensitive coating composition of claim 1, wherein said prepolymer is an epoxy resin containing epoxy groups esterified with acrylic acid or methacrylic acid, an alkyd resin containing hydroxyl groups esterified with acrylic acid or methacrylic acid, a prepolymer obtained by reacting an alkyd resin with an acrylic acid-polyol ester using a diisocyanate or a polyester resin containing hydroxyl groups with an acrylic acid-polyol ester using a diisocyanate.
Claim 7
Dependent Claim
58 words
The photosensitive coating composition of claim 1, wherein said composition is a printing ink and additionally includes a pigment and at least one of a wax, a stabilizer and a monomer diluent and wherein said sensitizer is present in an amount of about 5 to 25% by weight based on the total weight of the printing ink composition.
Claim 8
Dependent Claim
56 words
The photosensitive coating composition of claim 1, wherein said composition is a clear coating varnish and includes additionally at least one of a wax, a stabilizer, and a monomer diluent and wherein said sensitizer is present in an amount of about 1 to 8% by weight based on the total weight of the coating varnish composition.
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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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |