US4086210A
Expired / Lapsed
US
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Radiation sensitive polymeric o-nitrophenyl acetals
Assignee: Eastman Kodak Co
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Filing: 1976-05-10
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Granted: 1978-04-25
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Expires: 1996-05-10
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 Chris Petropoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:26
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: 19
Claim 1
Independent Claim
19 words
A radiation-sensitive linear polymer comprising recurring units of the structure ##STR16## where x ranges from 1 to 20 and
Claim 2
Dependent Claim
19 words
A radiation-sensitive linear polymer comprising recurring units of the structure ##STR16## where x ranges from 1 to 20 and
Claim 3
Dependent Claim
30 words
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.
Claim 4
Dependent Claim
30 words
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.
Claim 5
Dependent Claim
10 words
The radiation-sensitive polymer of claim 1, wherein y is 0.
Claim 6
Dependent Claim
29 words
The radiation-sensitive polymer of claim 2, wherein 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
35 words
The radiation-sensitive polymer of claim 3 wherein R is a divalent group comprising at least one unsubstituted, or lower alkyl substituted, divalent carbocyclic moiety selected from the group consisting of cyclobutylene; cyclopentylene; cyclohexylene; and norbornylene.
Claim 8
Dependent Claim
36 words
The radiation-sensitive polymer of claim 3 wherein R is the divalent residue of an organic diol selected from the group consisting of 1,4-cyclohexanedimethanol; 1,3-cyclohexanedimethanol; 1,2-cyclohexanedimethanol; 2,3-norcamphanedimethanol, 2,5-norcamphanedimethanol; 2,6-norcamphanedimethanol; 2,5-norcamphanediol; 2,6-norcamphanediol; 2,2,4,4-tetramethyl-1,3-cyclobutanediol; 1,4-cyclohexanediol; 1,4-cyclohexylenebis (oxymethanol); and methylenebis(1,4-cyclohexanol).
Claim 9
Dependent Claim
22 words
The radiation-sensitive polymer of claim 2 wherein R is the divalent residue of an alkylene diol having 5 to 15 carbon atoms.
Claim 10
Dependent Claim
29 words
The radiation-sensitive polymer of claim 2 wherein R is the divalent residue of an alkylene diol having 4 to 15 carbon atoms interrupted by at least one hetero atom.
Claim 11
Dependent Claim
15 words
The radiation-sensitive polymer of claim 7 wherein said hetero atom is oxygen, nitrogen, or sulfur.
Claim 12
Dependent Claim
10 words
The radiation-sensitive polymer of claim 1 wherein y is 1.
Claim 13
Dependent Claim
29 words
The radiation-sensitive polymer of claim 9 wherein 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
35 words
The radiation-sensitive polymer of claim 10 wherein R is a divalent group comprising at least one unsubstituted or lower alkyl substituted divalent carbocyclic moiety selected from the group consisting of cyclobutylene; cyclopentylene; cyclohexylene; and norbornylene.
Claim 15
Dependent Claim
60 words
The radiation-sensitive polymer of claim 10 wherein R is the divalent residue of an organic diol selected from the group consisting of 1,4-cyclohexanedimethanol; 1,3-cyclohexanedimethanol; 1,2-cyclohexanedimethanol; 2,3-norcamphanedimethanol; 2,5-norcamphanedimethanol; 2,6-norcamphanedimethanol; 2,5-norcamphanediol; 2,6-norcamphanediol; 2,2,4,4,-tetramethyl-1,3-cyclobutanediol; 1,4-cyclohexanediol; 1,4-cyclohexylenebis(oxymethanol); and methylenebis(1,4-cyclohexanol); R' is phenylene; and 0.25 grams of said polymer has an inherent viscosity from 0.15 to 0.25 in 1 deciliter of 1,2-dichloroethane at 25° C.
Claim 16
Dependent Claim
38 words
The radiation-sensitive polymer of claim 10 wherein R is the divalent residue of 1,4-cyclohexylenedimethanol, R' is phenylene; and 0.25 grams of said polymer has an inherent viscosity of about 0.18 in 1 deciliter of 1,2-dichloroethane at 25° C.
Claim 17
Dependent Claim
22 words
The radiation-sensitive polymer of claim 9 wherein R is the divalent residue of an alkylene diol having 5 to 15 carbon atoms.
Claim 18
Dependent Claim
29 words
The radiation-sensitive polymer of claim 9 wherein R is the divalent residue of an alkylene diol having 4 to 15 carbon atoms interrupted by at least one hetero arm.
Claim 19
Dependent Claim
15 words
The radiation-sensitive polymer of claim 15 wherein said hetero atom is oxygen, nitrogen, or sulfur.
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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |