US4137083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water based printing ink
Assignee: Monsanto Co
•
Filing: 1977-11-18
•
Granted: 1979-01-30
•
Expires: 1997-11-18
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
2026-10-24 02:55
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106; C09D11/107
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A printing process wherein a fast drying protective overcoat is applied over a slow drying ink, the improvement wherein said overcoat is an aqueous based solution comprising water and a polymer solubilized in said water 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
59 words
A printing process wherein a fast drying protective overcoat is applied over a slow drying ink, the improvement wherein said overcoat is an aqueous based solution comprising water and a polymer solubilized in said water 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
22 words
The process of claim 1 wherein said polymer is a maleimide copolymer solubilized by ammonia, a volatile amine or a mixture thereof.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the aqueous based solution is at least 75% by volume water.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the aqueous based solution is 100% by volume water.
Claim 6
Dependent Claim
46 words
The process of claim 2 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 7
Dependent Claim
19 words
The process of claim 2, the solution containing 0.5 to 20% maleimide copolymer (wt/vol, based on volume of ink).
Claim 8
Dependent Claim
18 words
The process of claim 2 wherein said copolymer has a molecular weight of 1,000 to over 1 million.
Claim 9
Dependent Claim
16 words
The process of claim 5 wherein said comonomer is a C 3 -C 8 aliphatic olefin.
Claim 10
Dependent Claim
10 words
The process of claim 5 wherein said comonomer is styrene.
Claim 11
Dependent Claim
10 words
The process of claim 8 wherein said comonomer is isobutylene.
Claim 12
Dependent Claim
28 words
The process of claim 10 wherein said copolymer is formed from a maleic anhydride copolymer by converting 70 to 90% of the maleic anhydride groups to the imide.
Claim 13
Dependent Claim
29 words
The process of claim 5 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.
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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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |