US4599111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desensitizing ink for wet offset printing
Assignee: SICPA Holding SA
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Filing: 1984-03-12
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Granted: 1986-07-08
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Expires: 2004-03-12
Abstract
Abstract A nucleophilic alkoxylated compound is bridged as a polyurethane by a polyisocyanate derivative or as a polyester by a polyacid derivative. A desensitizing ink for wet offset printing on an acceptor surface of a chemical duplicating set is thus obtained.
Inventors
- 👤 Albert Amon
- 👤 Roger Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:03
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/128; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
49 words
A densensitizing ink for wet offset priting on an acceptor surface of a chemical duplicating set comprising a nucleophilic alkoxylated compound, characterized in that the nucleophilic alkoxylated compound is bridged as a polyurethane in order to increase its molecular weight and improve the ink transfer on the inking rollers.
Claim 2
Dependent Claim
49 words
A densensitizing ink for wet offset priting on an acceptor surface of a chemical duplicating set comprising a nucleophilic alkoxylated compound, characterized in that the nucleophilic alkoxylated compound is bridged as a polyurethane in order to increase its molecular weight and improve the ink transfer on the inking rollers.
Claim 3
Dependent Claim
26 words
A desensitizing ink as in claim 1, characterized in that the nucleophilic alkoxylated compound is bridged as a polyurethane by an aliphatic or aromatic polyisocyanate derivative.
Claim 4
Dependent Claim
18 words
A densensitizing ink as in claim 1, characterized in that it contains emulsified water in the ink mass.
Claim 5
Dependent Claim
35 words
A densensitizing ink as in claim 3, characterized in that the amount of the emulsified water in the ink mass is sufficient for partial wetting of the hydrophilic areas of a wet offset printing plate.
Claim 6
Dependent Claim
35 words
A desensitizing ink as in claim 3, characterized in that the amount of emulsified water in the ink mass is sufficient to insure optimum saturation of the hydrophilic areas of a wet offset printing plate.
Claim 7
Dependent Claim
49 words
A desensitizing ink as in claim 2, characterized in that a part of the nucleophilic alkoxylated compound is substituted by a fatty acid containing at least one hydroxyl group, the nucleophilic alkoxylated compound and the fatty acid being bridged as a polyurethane by an aliphatic or aromatic polyisocyanate derivative.
Claim 8
Dependent Claim
49 words
A desensitizing ink as in claim 2, characterized in that a part of the nucleophilic alkoxylated compound is substituted by a fatty oil containing at least one hydroxyl group, the nucleophilic alkoxylated compound and the fatty oil being bridged as a polyurethane by an aliphatic or aromatic polyisocyanate derivative.
Claim 9
Dependent Claim
51 words
A desensitizing ink as in claim 2, characterized in that a part of the nucleophilic alkoxylated compound is substituted by a long oil alkyd containing at least one hydroxyl group, the nucleophilic alkoxylated compound and the long oil alkyd being bridged as a polyurethane by an aliphatic or aromatic polyisocyanate derivative.
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) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |