US3907574A
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Photopolymerizable composition
Assignee: Fujifilm Holdings Corp
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Filing: 1974-02-07
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Granted: 1975-09-23
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Expires: 1994-02-07
Abstract
Abstract A photopolymerizable composition which comprises (a) 80 to 50% by weight of a divinylurethane compound represented by the following general formula, in which R1, R2 and R3 each represents a hydrogen atom or a methyl group, n represents 1, 2 or 3, A represents a divalent residue of a cyclic carboxylic acid anhydride having 4 to 10 carbon atoms, B represents -R4- or -R4NHCOOR5OOCNHR4-, in which R4 represents an alkylene group with 4 to 13 carbon atoms, cycloalkylene group or arylene group and R5 represents an alkylene chain with 2 to 8 carbon atoms or an oxyalkylene chain with 2 to 4 carbon atoms, (b) 20 to 50% by weight of an organic high molecular weight polymer miscibile with the divinylurethane compound and having carboxyl groups on the side chains and an acid number of 30 or more and (c) 0.01 to 10% by weight of a light sensitizer capable of initiating the photopolymerization of an ethylenically unsaturated compound upon exposure to active radiation.
Inventors
- 👤 Teruhiko Yonezawa
- 👤 Nobuyuki Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:30
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/112; Y10S430/114; Y10S430/118
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
21 words
A PHOTOPOLYMERIZABLE COMPOSITION WHICH COMPRISES (A) 80 TO 50% BY WEIGHT OF A DIVINYLURETHANE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA
Claim 2
Dependent Claim
21 words
A PHOTOPOLYMERIZABLE COMPOSITION WHICH COMPRISES (A) 80 TO 50% BY WEIGHT OF A DIVINYLURETHANE COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA
Claim 3
Dependent Claim
54 words
The photopolymerizable composition of claim 1, wherein A represents the divalent residue of a cyclic carboxylic acid anhydride selected from the group consisting of phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, succinic anhydride, maleic anhydride, 3,6-endomethylene- Delta 4-tetrahydrophthalic anhydride, 3,6-endooxy-Delta 4-tetrahydrophthalic anhydride, Alpha -chloro-maleic anhydride, Alpha -phenyl maleic anhydride, and glutaric anhydride; wherein R4 is
Claim 4
Dependent Claim
62 words
The photopolymerizable composition of claim 1, wherein said organic high molecular weight polymer is a cellulose derivative having carboxyl groups on the side chains, an acidic polyvinyl alcohol derivatiVe having carboxyl groups on the side chains, an acrylic acid copolymer, a methacrylic acid copolymer, an itaconic acid copolymer, a crotonic acid copolymer, or a maleic anhydride copolymer partially esterified with an alcohol.
Claim 5
Dependent Claim
21 words
The photopolymerizable composition of claim 1, wherein said organic high molecular weight polymer has a molecular weight of at least 1000.
Claim 6
Dependent Claim
31 words
The photopolymerizable composition of claim 1, wherein said organic high molecular weight polymer is present in an amount of 30 to 40 % by weight, based on the total composition weight.
Claim 7
Dependent Claim
67 words
The photopolymerizable composition of claim 3, wherein said organic high molecular weight polymer is selected from the group consisting of cellulose acetate phthalate, hydroxypropylmethyl cellulose phthalate, hydroxypropylmethyl cellulose acetate hexahydrophthalate, methylmethacrylate/methacrylic acid copolymer (90/10 wt%), methylmethacrylate/acrylonitrile/acrylic acid compolymer (75/15/10 wt%), styrene/itaconic acid copolymer (90/10 wt%), vinyl acetate/crotonic acid copolymer (93/7 wt%), and styrene/maleic anhydride copolymer (50/50 mol%) esterified with an alcohol having 1 to 18 carbon atoms.
Claim 8
Dependent Claim
38 words
The photopolymerizable composition of claim 1, wherein said sensitizer is at least one member selected from the group consisting of benzoin, benzoin alkyl ethers, anthraquinone derivatives, benzyl, bicarbonyl compounds, carbonyl compounds, 9-phenylacridine and 3-methyl-2-benzoylmethylenenaphtho (1,2- Alpha ) thiazole.
Claim 9
Dependent Claim
46 words
The photopolymerizable composition of claim 1, wherein said sensitizer is at least one member selected from the group consisting of benzoin, benzoin methyl ether, benzoin ethyl ether, 2-ethylanthraquinone, 2-t-butylanthraquinone, benzyl, 4,4''-oxydibenzyl, biacetyl, benzophenone, Michler''s ketone, xanthone, 2-chloroxanthone, triacetylbenzene, anthrone, 9-phenylacridine and 3-methyl-2-benzoylmethylenenaphtho (1,2- Alpha ) thiazole.
Claim 10
Dependent Claim
22 words
The photopolymerizable composition of claim 7, wherein said sensitizer is present in an amount of from 0.5 to 2 % by weight.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |