US4009040A
Expired / Lapsed
US
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Hexaarylbiimidazole polymers
Assignee: EIDP Inc
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Filing: 1975-05-21
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Granted: 1977-02-22
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Expires: 1995-05-21
Abstract
Abstract Polymers containing hexaarylbiimidazole groups depolymerize upon being struck by radiation and are useful in producing positive images. Exemplary is poly[1,10-bis-4'-[5"(2-o-chlorophenyl-4"-phenyl)imidazolyl]phenoxydecane].
Inventors
- 👤 William John Nebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:47
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/64; C08; C08F; C08F8/00; C08G; C08G73/00; C08G73/06; C08G73/0605; C08G73/0616; G; G03; G03F; G03F7/00; G03F7/004; G03F7/039
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
86 words
A film forming polymer containing a plurality of hexaarylbiimidazole groups of the formula ##STR23## incorporated in the main chain or a cross-linking side chain of the polymer through one A, B or D group and through one A', B' or D' group wherein A, b, d, a', b' and D' individually are aryl groups of 6-12 ring atoms substituted with up to one or more of fluorine, chlorine, bromine, cyano, nitro, phenylthio, or alkyl, alkoxy, acyloxy, acylamido, alkylthio or dialkylsulfamoyl group each having 1-6 carbon atoms.
Claim 2
Dependent Claim
86 words
A film forming polymer containing a plurality of hexaarylbiimidazole groups of the formula ##STR23## incorporated in the main chain or a cross-linking side chain of the polymer through one A, B or D group and through one A', B' or D' group wherein A, b, d, a', b' and D' individually are aryl groups of 6-12 ring atoms substituted with up to one or more of fluorine, chlorine, bromine, cyano, nitro, phenylthio, or alkyl, alkoxy, acyloxy, acylamido, alkylthio or dialkylsulfamoyl group each having 1-6 carbon atoms.
Claim 3
Dependent Claim
15 words
A polymer of claim 1 in which all the said aryl groups are each phenyl.
Claim 4
Dependent Claim
13 words
A polymer of claim 1 containing at least 5 of said hexaarylbiimidazole groups.
Claim 5
Dependent Claim
13 words
A polymer of claim 1 containing 5 to 200 of said hexaarylbiimidazole groups.
Claim 6
Dependent Claim
19 words
A polymer of claim 1 having a repeating unit of the formula ##STR24## wherein X is a divalent radical.
Claim 7
Dependent Claim
14 words
A polymer of claim 5 where X is -O(CH.sub.2).sub.m O- wherein m is 5-50.
Claim 8
Dependent Claim
9 words
A polymer of claim 6 wherein m is 5-12.
Claim 9
Dependent Claim
9 words
A polymer of claim 7 where m is 10.
Claim 10
Dependent Claim
13 words
A polymer of claim 5 in which A and A' each are o-chlorophenyl.
Claim 11
Dependent Claim
10 words
A polymer of claim 5 wherein the polymer is poly-1,10-bis-4'-[5"(2"-o-chlorophenyl-4"-phenyl)imidazoly]-phenoxydecane.
Claim 12
Dependent Claim
13 words
A photodepolymerizable composition for producing an image comprising a polymer of claim 1.
Claim 13
Dependent Claim
13 words
A photodepolymerizable composition for producing an image comprising a polymer of claim 5.
Claim 14
Dependent Claim
13 words
A photodepolymerizable composition for producing an image comprising the polymer of claim 9.
Claim 15
Dependent Claim
20 words
The process of producing an image comprising the step of imagewise exposing a composition of claim 11 to actinic radiation.
Claim 16
Dependent Claim
20 words
The process of producing an image comprising the step of imagewise exposing the composition of claim 12 to actinic radiation.
Claim 17
Dependent Claim
20 words
The process of producing an image comprising the step of imagewise exposing the composition of claim 13 to actinic radiation.
Claim 18
Dependent Claim
14 words
The process of using a polymer of claim 1 as an initiator of photopolymerization.
Claim 19
Dependent Claim
10 words
The process of claim 17 where the polymer is poly-1,10-bis-4'-[5"(2"-o-chlorophenyl-4"-phenyl)-imidazolyl]phenoxydecane
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) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |