US3647470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive compositions containing furylacrylyl-containing polymer
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1969-10-21
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Granted: 1972-03-07
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Expires: 1989-10-21
Abstract
Abstract The present invention provides photosensitive compositions of high sensitivity comprising a photosensitive furylacrylylcontaining polymer having a polymerization degree of 500 or more wherein the furylacrylyl group is the photosensitive component of said polymer and wherein said furylacrylyl-containing polymer has been produced by the aqueous alkaline process. The photosensitive compositions are preferably mixtures of a photosensitive polymer and a sensitizer and/or other polymers.
Inventors
- 👤 Minoru Tsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:08
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
The photosensitive composition of high sensitivity comprising a composition selected from the group consisting of (i) at least one furylacrylyl-containing photosensitive polymer and at least one sensitizer, (ii) at least one furylacrylyl-containing photosensitive polymer and at least one other polymer, and (iii) at least one furylacrylyl-containing photosensitive polymer together with at least one sensitizer and at least one other polymer; wherein said furylacrylyl photosensitive polymer is the furylacrylyl ester of a vinyl polymer and has a polymerization degree of 500 or more.
Claim 2
Dependent Claim
29 words
The photosensitive composition of claim 2, wherein said furylacrylyl ester of a vinyl polymer having a polymerization degree of 500 or more is produced by the aqueous alkaline process.
Claim 3
Dependent Claim
22 words
The photosensitive composition of claim 2, wherein said sensitizer is selected from the group consisting of aromatic nitro compounds and aromatic ketones.
Claim 4
Dependent Claim
25 words
The photosensitive composition of claim 2, wherein said at least one other polymer is selected from the group consisting of novolak, resol and epoxy resin.
Claim 5
Dependent Claim
37 words
The photosensitive composition of claim 2, wherein said furylacrylyl ester of a vinyl polymer is selected from the group consisting of poly(vinyl furylacrylate), poly(vinyl furylacrylate-vinyl cinnamate) copolymer, poly(vinyl furylacrylate-vinyl acetate) copolymer, and poly(vinyl furylacrylate-vinyl cinnamate-vinyl acetate) copolymer.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |