US4889877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High solids CB printing ink
Assignee: Standard Register Co
•
Filing: 1988-01-07
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Granted: 1989-12-26
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Expires: 2008-01-07
Abstract
Abstract A high solids content, aqueous, microcapsule-containing printing ink is prepared by forming microcapsules in situ in a printing ink vehicle. The microcapsules are preferably prepared by interfacial polymerization or interfacial crosslinking between a reactant, such as a polyisocyanate dissolved in an oily solution and a coreactant such as a polysalt of casein and diethylene triamine present in an aqueous solution into which the oily solution is dispensed. The aqueous solution contains water and a non-volatile diluent such as a non-reducing sugar, for example methyl glucoside. The printing ink preferably has a 60-70% by weight solids content and may be used as a low-coat-weight CB coating for preparing carbonless copy paper.
Inventors
- 👤 Michael E. A. Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:07
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; B; B41; B41M; B41M5/00; B41M5/124; B41M5/165
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
56 words
A high solids content, aqueous, microcapsule-containing printing ink, having a solids content of approximately 60-70% by weight, said printing ink comprising: an aqueous solution containing water and a non-volatile diluent selected from the group consisting of methyl glucoside, dimethyl urea, dimethyl hydantoin formaldehyde resin, sorbitol, erythritol, and polyoxyethylene polyols, oil-containing microcapsules dispersed in said aqueous solution.
Claim 2
Dependent Claim
56 words
A high solids content, aqueous, microcapsule-containing printing ink, having a solids content of approximately 60-70% by weight, said printing ink comprising: an aqueous solution containing water and a non-volatile diluent selected from the group consisting of methyl glucoside, dimethyl urea, dimethyl hydantoin formaldehyde resin, sorbitol, erythritol, and polyoxyethylene polyols, oil-containing microcapsules dispersed in said aqueous solution.
Claim 3
Dependent Claim
48 words
The printing ink of claim 1 further including a protective colloid blend of materials selected from the group consisting of styrene-maleic anhydride copolymers, methyl vinyl ether-maleic anhydride copolymers, styrene-maleic ester copolymers, methyl vinyl ether-maelic ester copolymers, carboxymethylcellulose, casein, polyvinyl alcohol, polyvinyl pyrrolidone, acyrlic resins, and styrenated acrylic resins.
Claim 4
Dependent Claim
17 words
The printing ink of claim 2 further including a latex binder emulsion or an alkali soluble resin.
Claim 5
Dependent Claim
40 words
The printing ink of claim 3 wherein the ingredients are present in the approximate amounts by weight of 38% water 16% non-volatile diluent 36% oil-containing microcapsules 6% protective colloid blend 1.5% binder emulsion or alkali soluble resin 2.5% miscellaneous ingredients
Claim 6
Dependent Claim
31 words
The printing ink of claim 1 wherein said oil-containing microcapsules contain an oily solvent and a dye precursor capable of reacting with a color developer in order to form a color.
Claim 7
Dependent Claim
20 words
The printing ink of claim 5 wherein said microcapusles have a capsule wall formed by interfacial polymerization or interfacial crosslinking.
Claim 8
Dependent Claim
49 words
The printing ink of claim 6 wherein said capsule walls are formed by the reaction between a polyisocyanate crosslinking agent and a polysalt comprising a high molecular weight polyanion and a polycationic polyamine having a molecular weight of less than 1200 and having a functionality of at least three.
Claim 9
Dependent Claim
24 words
The printing ink of claim 1 wherein said non-volatile diluent is present in an amount ranging from 12-25% by weight of said printing ink.
Claim 10
Dependent Claim
37 words
The printing ink of claim 8 wherein said non-volatile diluent is non-hygroscopic, is a non-plasticizer for said capsule wall, has a vapor pressure of less than about 0.1 mm Hg, and is essentially tack free when dried.
Claim 11
Dependent Claim
25 words
The printing ink of claim 2 wherein said protective colloid blend is present in an amount of from 4-8% by weight of said printing ink.
Claim 12
Dependent Claim
28 words
The printing ink of claim 3 wherein a binder emulsion selected from the group consisting of a styrene/acrylic latexes and styrene/butadiene latexes is present in said printing ink.
Claim 13
Dependent Claim
14 words
The printing ink of claim 7 herein said polysalt comprises casein and diethylene triamine.
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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) | 1992-12-25 | 1993-06-26 | 1993-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-25 | 1997-06-26 | 1997-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-25 | 2001-06-26 | 2001-12-26 | $7700.00 | Window Closed / Lapsed |