US4072644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water based printing ink
Assignee: Monsanto Co
•
Filing: 1976-05-17
•
Granted: 1978-02-07
•
Expires: 1996-05-17
Abstract
Abstract A rapidly drying aqueous printing ink containing a gel forming polymer soluble in the ink but which rapidly gels upon application of the ink to a substrate during a printing process.
Inventors
- 👤 Ross M. Hedrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:32
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106; C09D11/107
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
40 words
An aqueous based printing ink comprising ink pigment, water and a polymer solubilized in said ink by a rapid removable solubilizing component, said polymer being capable of forming a water-insensitive gel film upon removal of said rapid removable solubilizing component.
Claim 2
Dependent Claim
40 words
An aqueous based printing ink comprising ink pigment, water and a polymer solubilized in said ink by a rapid removable solubilizing component, said polymer being capable of forming a water-insensitive gel film upon removal of said rapid removable solubilizing component.
Claim 3
Dependent Claim
9 words
The ink of claim 1 including a pigment binder.
Claim 4
Dependent Claim
17 words
The ink of claim 1 comprising a vehicle which is at least 75 percent by volume water.
Claim 5
Dependent Claim
14 words
The ink of claim 1 comprising a vehicle which is 100% by volume water.
Claim 6
Dependent Claim
22 words
The ink of claim 1 wherein said polymer is a maleimide copolymer solubilized by ammonia, a volatile amine, or a mixture thereof.
Claim 7
Dependent Claim
47 words
The ink of claim 5 wherein said copolymer contains one or more comonomers selected from the group consisting of C 3 -C 8 aliphatic olefins, styrene or the polymerizable lower alkyl substituted styrenes, the vinyl esters of lower aliphatic carboxylic acids and the vinyl lower alkyl ethers.
Claim 8
Dependent Claim
17 words
The ink of claim 5 containing 0.5 to 20% maleimide copolymer (wt/vol), based on volume of ink.
Claim 9
Dependent Claim
9 words
The ink of claim 5 including a pigment binder.
Claim 10
Dependent Claim
17 words
The ink of claim 6 comprising a vehicle which is at least 75 percent by volume water.
Claim 11
Dependent Claim
14 words
The ink of claim 6 comprising a vehicle which is 100% water by volume.
Claim 12
Dependent Claim
18 words
The ink of claim 6 wherein said copolymer has a molecular weight of 1000 to over 1 million.
Claim 13
Dependent Claim
16 words
The ink of claim 6 where said comonomer is a C 3 -C 8 aliphatic olefin.
Claim 14
Dependent Claim
10 words
The ink of claim 6 wherein said comonomer is styrene.
Claim 15
Dependent Claim
10 words
The ink of claim 12 wherein said comonomer is isobutylene.
Claim 16
Dependent Claim
28 words
The ink of claim 14 wherein said copolymer is formed from a maleic anhydride copolymer by converting 70 to 90% of the maleic anhydride groups to the imide.
Claim 17
Dependent Claim
29 words
The ink of claim 6 wherein said copolymer contains sufficient maleimide units to impart said water-insensitivity with additional maleic anhydride units present as the half amide and/or ammonium salt.
Claim 18
Dependent Claim
12 words
A letter press printing process employing the printing ink of claim 1.
Claim 19
Dependent Claim
12 words
A letter press printing process employing the printing ink of claim 6.
Claim 20
Dependent Claim
11 words
A gravure printing process employing the printing ink of claim 1.
Claim 21
Dependent Claim
11 words
A gravure printing process employing the printing ink of claim 6.
Claim 22
Dependent Claim
11 words
A flexographic printing process employing the printing ink of claim 1.
Claim 23
Dependent Claim
11 words
A flexographic printing process employing the printing ink of claim 6.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |