US4401743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous developable photosensitive composition and printing plate
Assignee: 3M Co
•
Filing: 1982-02-03
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Granted: 1983-08-30
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Expires: 2002-02-03
Abstract
Abstract A light-sensitive adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups and a sulfonated polymer having a plurality of sulfonate groups and a presensitized light-sensitive article comprising a substrate having a light-sensitive coating which is comprised of the light-sensitive adduct on a surface thereof. After imagewise exposure, unexposed portions of the coating are removable by water or aqueous developers.
Inventors
- 👤 Joseph H. Incremona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:52
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016; G03F7/021; G03F7/0212; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0828
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
43 words
A light sensitive adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups, with a sulfonated polymer having a plurality of sulfonate groups, said sulfonated polymer being selected from the group consisting of sulfonated polyesters and sulfonated polyurethanes.
Claim 2
Dependent Claim
43 words
A light sensitive adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups, with a sulfonated polymer having a plurality of sulfonate groups, said sulfonated polymer being selected from the group consisting of sulfonated polyesters and sulfonated polyurethanes.
Claim 3
Dependent Claim
26 words
The adduct of claim 1 wherein said sulfonated polymer contains at least one sulfonate group per about 500 to about 8,000 molecular weight of said polymer.
Claim 4
Dependent Claim
26 words
The adduct of claim 2 wherein said sulfonated polymer contains at least one sulfonate group per about 1,500 to about 3,000 molecular weight of said polymer.
Claim 5
Dependent Claim
20 words
The adduct of claim 1 wherein the ratio of diazo to sulfonate equivalents is less than about 1.5 to 1.
Claim 6
Dependent Claim
19 words
The adduct of claim 4 wherein said ratio is from about 0.1 to 1 to about 0.6 to 1.
Claim 7
Dependent Claim
12 words
The adduct of claim 4 wherein said ratio is 1.0 to 1.
Claim 8
Dependent Claim
60 words
A presensitized light-sensitive article comprising a substrate having coated on one surface thereof a light-sensitive coating comprising an adduct, said adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups and a sulfonated polymer having a plurality of sulfonate groups, said sulfonated polymer being selected from the group consisting of sulfonated polyesters and sulfonated polyurethanes.
Claim 9
Dependent Claim
60 words
A presensitized light-sensitive article comprising a substrate having coated on one surface thereof a light-sensitive coating comprising an adduct, said adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups and a sulfonated polymer having a plurality of sulfonate groups, said sulfonated polymer being selected from the group consisting of sulfonated polyesters and sulfonated polyurethanes.
Claim 10
Dependent Claim
27 words
The light-sensitive article of claim 7 wherein said sulfonated polymer contains at least one sulfonate group per about 500 to about 8,000 molecular weight of said polymer.
Claim 11
Dependent Claim
27 words
The light-sensitive article of claim 7 wherein said sulfonated polymer contains at least one sulfonate group per about 1,500 to about 3,000 molecular weight of said polymer.
Claim 12
Dependent Claim
20 words
The light-sensitive article of claim 7 wherein said ratio is from about 0.1 to 1 to about 0.6 to 1.
Claim 13
Dependent Claim
13 words
The light-sensitive article of claim 7 wherein said ratio is 1.0 to 1.
Claim 14
Dependent Claim
19 words
The light-sensitive article of claim 7 wherein said substrate comprises an aluminum sheet having a permanently hydrophilic surface thereon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |