Patent US1987513A successfully refreshed from Google Patents.
US4865646A
Expired / Lapsed
US
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Offset fountain solution to replace isopropyl alcohol
Assignee: ANCHOR/LITHKEMKO Inc
•
Filing: 1987-12-31
•
Granted: 1989-09-12
•
Expires: 2007-12-31
Abstract
Abstract A formula for a fountain solution which maintains an ink-free non-image area without the use of isopropyl alcohol. The present invention pertains to an improved method for offset printing with the fountain solution.
Inventors
- 👤 David C. Egberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:46
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
Fountain solution comprising: ______________________________________
Wt. Percent
______________________________________
a. Deionized Water 40-82%
b. Potassium Pyrophosphate
0.2-2.0%
c. Phosphoric Acid 85% 0.2-4.0%
d. Carboxymethyl cellulose
0.5-4.0%
(Ambergum 1221 ™)
e. Propylene Glycol 3.0-10%
f. Ethylene Glycol 12.0-15.8%
g. [Surfynol 61 ™] Ethoxylated
0.8-1.6%
2,4,7,9-tetra-methyl-5-
decyne-4,7-diol
h. [Surfynol 104 ™ 0.3-2.0%
(85% EG)] 3,5,-
dimethyl-1-hexyne-3-ol
i. [Surfynol 440 ™] 2,4,7,9-
0-0.6%
tetra-methyl-5-decyne-4,
7-diol
j. 42% solution in water of
1.0-25% ,
sodium xylene sulfonate
______________________________________
Claim 2
Dependent Claim
72 words
Fountain solution comprising: ______________________________________
Wt. Percent
______________________________________
a. Deionized Water 40-82%
b. Potassium Pyrophosphate
0.2-2.0%
c. Phosphoric Acid 85% 0.2-4.0%
d. Carboxymethyl cellulose
0.5-4.0%
(Ambergum 1221 ™)
e. Propylene Glycol 3.0-10%
f. Ethylene Glycol 12.0-15.8%
g. [Surfynol 61 ™] Ethoxylated
0.8-1.6%
2,4,7,9-tetra-methyl-5-
decyne-4,7-diol
h. [Surfynol 104 ™ 0.3-2.0%
(85% EG)] 3,5,-
dimethyl-1-hexyne-3-ol
i. [Surfynol 440 ™] 2,4,7,9-
0-0.6%
tetra-methyl-5-decyne-4,
7-diol
j. 42% solution in water of
1.0-25% ,
sodium xylene sulfonate
______________________________________
Claim 3
Dependent Claim
46 words
In a fountain solution concentrate comprising a hydrophilic polymer and water, the improvement which comprises the presence in the concentrate of: a. a hyrdophobic surfactant consisting of 3,5-dimethyl-1-hexyn-3-ol; 2,4,7,9-tetra-methyl-5-decyne-4,7-diol; or an ethoxylated 2,4,7,9-tetra-methyl-5-decyne-4,7-diol; b. a hydrotrope dispersant for (a); and, c. a solvent system for (a).
Claim 4
Dependent Claim
46 words
In a fountain solution concentrate comprising a hydrophilic polymer and water, the improvement which comprises the presence in the concentrate of: a. a hyrdophobic surfactant consisting of 3,5-dimethyl-1-hexyn-3-ol; 2,4,7,9-tetra-methyl-5-decyne-4,7-diol; or an ethoxylated 2,4,7,9-tetra-methyl-5-decyne-4,7-diol; b. a hydrotrope dispersant for (a); and, c. a solvent system for (a).
Claim 5
Dependent Claim
63 words
A fountain solution concentrate comprising: ______________________________________
a. Water 21.1 kg
b. Potassium pyrophosphate
408.6 g
c. Phosphoric acid (85%)
181.6 g
d. Carboxymethyl cellulose
1.36 kg
e. Propylene glycol 3.26 kg
f. Ethylene glycol 6.45 kg
g. Ethoxylated 2,4,7,9-
227.0 g
tetra-methyl-5-
decyne-4,7-diol
h. 3,5,-dimethyl-1- 544.8 g
hexyne-3-ol
i. 2,4,7,9-tetra-methyl-
454.0 g
5-decyne-4,7-diol
h. Sodium xylene sulfonate
11.35 kg
42% aqueous solution
______________________________________
Claim 6
Dependent Claim
63 words
A fountain solution concentrate comprising: ______________________________________
a. Water 21.1 kg
b. Potassium pyrophosphate
408.6 g
c. Phosphoric acid (85%)
181.6 g
d. Carboxymethyl cellulose
1.36 kg
e. Propylene glycol 3.26 kg
f. Ethylene glycol 6.45 kg
g. Ethoxylated 2,4,7,9-
227.0 g
tetra-methyl-5-
decyne-4,7-diol
h. 3,5,-dimethyl-1- 544.8 g
hexyne-3-ol
i. 2,4,7,9-tetra-methyl-
454.0 g
5-decyne-4,7-diol
h. Sodium xylene sulfonate
11.35 kg
42% aqueous solution
______________________________________
Claim 7
Dependent Claim
17 words
The concentrate of claim 1 diluted with water to a concentrate/water weight ratio of 1-20 to 1-70.
Claim 8
Dependent Claim
17 words
The concentrate of claim 3 diluted with water to a concentrate/water weight ratio of 1-20 to 1-70.
Claim 9
Dependent Claim
17 words
The concentrate of claim 2 diluted with water to a concentrate/water weight ratio of 1-20 to 1-70.
References Cited (Backward Citations)
US4560410A
Cited
US4548645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |