US4131465A
Expired / Lapsed
US
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Radiation sensitive polymeric o-nitrophenyl acetals and element
Assignee: Eastman Kodak Co
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Filing: 1977-09-27
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Granted: 1978-12-26
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Expires: 1997-09-27
Abstract
Abstract Radiation-sensitive linear polymers comprise repeating structural units containing an o-nitrophenyl acetal. The polymer is formed, for example, by the linear polycondensation of o-nitrobenzaldehyde with a particular dihydroxy alcohol. The polymers are useful as coatings to form positive-working radiation-sensitive elements such as photoresists or lithographic printing plates.
Inventors
- 👤 Constantine C. Petropoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:46
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
59 words
A radiation-sensitive composition comprising a radiation-sensitive linear polymer comprising recurring units of the structure ##STR16## where x ranges from 1 to 20 and y is 0 or 1, R is the divalent residue of an organic diol capable of forming a linear polyacetal with an aldehyde, A is ##STR17## where R' is arylene, and a solvent for said polymer.
Claim 2
Dependent Claim
59 words
A radiation-sensitive composition comprising a radiation-sensitive linear polymer comprising recurring units of the structure ##STR16## where x ranges from 1 to 20 and y is 0 or 1, R is the divalent residue of an organic diol capable of forming a linear polyacetal with an aldehyde, A is ##STR17## where R' is arylene, and a solvent for said polymer.
Claim 3
Dependent Claim
33 words
The radiation-sensitive composition of claim 1 wherein y is 0 and R is a divalent group comprising at least one divalent carbocylic moiety having a cyclic nucleus with 4 to 7 carbon atoms.
Claim 4
Dependent Claim
26 words
The radiation-sensitive composition of claim 1 wherein y is 0 and R is the divalent residue of an alkylene diol having 5 to 15 carbon atoms.
Claim 5
Dependent Claim
33 words
The radiation-sensitive composition of claim 5 wherein y is 0 and R is the divalent residue of an alkylene diol having 4 to 15 carbon atoms interrupted by at least one hetero atom.
Claim 6
Dependent Claim
33 words
The radiation-sensitive composition of claim 1 wherein y is 1 and R is a divalent group comprising at least one divalent carbocyclic moiety having a cyclic nucleus with 4 to 7 carbon atoms.
Claim 7
Dependent Claim
26 words
The radiation-sensitive composition of claim 1 wherein y is 1 and R is the divalent residue of an alkylene diol having 5 to 15 carbon atoms.
Claim 8
Dependent Claim
33 words
The radiation-sensitive composition of claim 1 wherein y is 1 and R is the divalent residue of an alkylene diol having 4 to 15 carbon atoms interrupted by at least one hetero atom.
Claim 9
Dependent Claim
11 words
The radiation-sensitive composition of claim 2 wherein said solvent is 1,2-dichloroethane.
Claim 10
Dependent Claim
10 words
The radiation-sensitive composition of claim 8, further comprising 9-xanthone sensitizer.
Claim 11
Dependent Claim
59 words
A radiation-sensitive element comprising a support bearing a layer of a radiation-sensitive linear polymer comprising recurring units of the structure ##STR18## where x ranges from 1 to 20 and y is 0 or 1, R is the divalent residue of an organic diol capable of forming a linear polyacetal with an aldehyde, A is ##STR19## where R' is arylene.
Claim 12
Dependent Claim
59 words
A radiation-sensitive element comprising a support bearing a layer of a radiation-sensitive linear polymer comprising recurring units of the structure ##STR18## where x ranges from 1 to 20 and y is 0 or 1, R is the divalent residue of an organic diol capable of forming a linear polyacetal with an aldehyde, A is ##STR19## where R' is arylene.
Claim 13
Dependent Claim
33 words
The radiation-sensitive element of claim 10 wherein y is 0 and R is a divalent group comprising at least one divalent carbocyclic moiety having a cyclic nucleus with 4 to 7 carbon atoms.
Claim 14
Dependent Claim
26 words
The radiation-sensitive element of claim 10 wherein y is 0 and R is the divalent residue of an alkylene diol having 5 to 15 carbon atoms.
Claim 15
Dependent Claim
33 words
The radiation-sensitive element of claim 10 wherein y is 0 and R is the divalent residue of an alkylene diol having 4 to 15 carbon atoms interrupted by at least one hetero atom.
Claim 16
Dependent Claim
33 words
The radiation-sensitive element of claim 10 wherein y is 1 and R is a divalent group comprising at least one divalent carbocyclic moiety having a cyclic nucleus with 4 to 7 carbon atoms.
Claim 17
Dependent Claim
26 words
The radiation-sensitive element of claim 10 wherein y is 1 and R is the divalent residue of an alkylene diol having 5 to 15 carbon atoms.
Claim 18
Dependent Claim
33 words
The radiation-sensitive element of claim 10 wherein y is 1 and R is the divalent residue of an alkylene diol having 4 to 15 carbon atoms interrupted by at least one hetero atom.
Claim 19
Dependent Claim
77 words
A radiation-sensitive element comprising an aluminum support and a layer of a radiation-sensitive linear polymer comprising recurring units of the structure ##STR20## where x ranges from 1 to 20 and y is 0, R is a divalent residue of an organic diol capable of forming a linear polyacetal with an aldehyde, said residue comprising at least one divalent carbocyclic moiety having a cyclic nucleus with 4 to 7 carbon atoms, A is ##STR21## where R' is arylene.
Claim 20
Dependent Claim
77 words
A radiation-sensitive element comprising an aluminum support and a layer of a radiation-sensitive linear polymer comprising recurring units of the structure ##STR20## where x ranges from 1 to 20 and y is 0, R is a divalent residue of an organic diol capable of forming a linear polyacetal with an aldehyde, said residue comprising at least one divalent carbocyclic moiety having a cyclic nucleus with 4 to 7 carbon atoms, A is ##STR21## where R' is arylene.
Claim 21
Dependent Claim
106 words
A process for preparing an image which comprises imagewise exposing to actinic radiation a radiation-sensitive element comprising a support bearing a layer of a radiation-sensitive linear polymer comprising recurring units of the structure ##STR22## where x ranges from 1 to 20 and y is 0 or 1, R is the divalent residue of an organic capable of forming a linear polyacetal with an aldehyde, A is ##STR23## where R' is arylene to effect a difference in solubility between exposed and unexposed areas of the element, and developing an image by removing the exposed areas with a solvent therefore which is a non-solvent for the unexposed areas.
Claim 22
Dependent Claim
106 words
A process for preparing an image which comprises imagewise exposing to actinic radiation a radiation-sensitive element comprising a support bearing a layer of a radiation-sensitive linear polymer comprising recurring units of the structure ##STR22## where x ranges from 1 to 20 and y is 0 or 1, R is the divalent residue of an organic capable of forming a linear polyacetal with an aldehyde, A is ##STR23## where R' is arylene to effect a difference in solubility between exposed and unexposed areas of the element, and developing an image by removing the exposed areas with a solvent therefore which is a non-solvent for the unexposed areas.
References Cited (Backward Citations)
US3984378A
Cited
US3991033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |