US4940738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High solids CB printing ink containing a protective colloid blend
Assignee: Standard Register Co
•
Filing: 1989-08-11
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Granted: 1990-07-10
•
Expires: 2009-08-11
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
2026-10-25 16:58
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/165; C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
53 words
A high solids content, aqueous, microcapsule-containing printing ink, comprising: an aqueous solution containing water and a non-volatile diluent, oil-containing microcapsules dispersed in said aqueous solution, and a protective colloid blend dispersed in said aqueous solution, said protective colloid blend comprising a blend of hard, brittle, poor film-forming resin with soft, pliable, film-forming resin.
Claim 2
Dependent Claim
53 words
A high solids content, aqueous, microcapsule-containing printing ink, comprising: an aqueous solution containing water and a non-volatile diluent, oil-containing microcapsules dispersed in said aqueous solution, and a protective colloid blend dispersed in said aqueous solution, said protective colloid blend comprising a blend of hard, brittle, poor film-forming resin with soft, pliable, film-forming resin.
Claim 3
Dependent Claim
27 words
The printing ink of claim 1 wherein said protective colloid blend is present in said aqueous solution in an amount ranging from 4 to 8% by weight.
Claim 4
Dependent Claim
50 words
The printing ink of claim 2 wherein said protective colloid blend is a 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-maleic ester copolymers, carboxymethylcellulose, casein, polyvinyl alcohol, polyvinyl pyrrolidone, acrylic resins, and styrenated acrylic resins.
Claim 5
Dependent Claim
24 words
The printing ink of claim 3 wherein said protective colloid blend is a blend of casein and polyvinyl pyrolidone in equal amounts by weight.
Claim 6
Dependent Claim
17 words
The printing ink of claim 3 further including a latex binder emulsion or an alkali soluble resin.
Claim 7
Dependent Claim
19 words
The printing ink of claim 1 wherein said solids content of said printing ink is approximately 60-70% by weight.
Claim 8
Dependent Claim
76 words
A high solids content, aqueous, microcapsule-containing printing ink, comprising: an aqueous solution containing water and a non-volatile diluent, said non-volatile diluent being selected from the group consisting of methyl glucoside, dimethyl urea, dimethyl hydantoin formaldehyde resin, sorbitol, erythritol, and polyoxethylene polyols, oil-containing microcapsules dispersed in said aqueous solution, and a protective colloid blend dispersed in said aqueous solution, said protective colloid blend comprising a blend of hard, brittle, poor film-forming resin with soft, pliable film-forming resin.
Claim 9
Dependent Claim
76 words
A high solids content, aqueous, microcapsule-containing printing ink, comprising: an aqueous solution containing water and a non-volatile diluent, said non-volatile diluent being selected from the group consisting of methyl glucoside, dimethyl urea, dimethyl hydantoin formaldehyde resin, sorbitol, erythritol, and polyoxethylene polyols, oil-containing microcapsules dispersed in said aqueous solution, and a protective colloid blend dispersed in said aqueous solution, said protective colloid blend comprising a blend of hard, brittle, poor film-forming resin with soft, pliable film-forming resin.
Claim 10
Dependent Claim
27 words
The printing ink of claim 7 wherein said protective colloid blend is present in said aqueous solution in an amount ranging from 4 to 8% by weight.
Claim 11
Dependent Claim
50 words
The printing ink of claim 8 wherein said protective colloid blend is a blend of materials selected from the group consisting of styrene-maleic anhydride copolymers, methyl vinyl ester-maleic anhydride copolymers, styrene-maleic ester copolymers, methyl vinyl ether-maleic ester copolymers, carboxymethylcellulose, casein, polyvinyl alcohol, polyvinyl pyrrolidone, acrylic resins, and styrenated acrylic resins.
Claim 12
Dependent Claim
24 words
The printing ink of claim 9 wherein said protective colloid blend is a blend of casein and polyvinyl pyrolidone in equal amounts by weight.
Claim 13
Dependent Claim
17 words
The printing ink of claim 9 further including a latex binder emulsion or an alkali soluble resin.
Claim 14
Dependent Claim
19 words
The printing ink of claim 7 wherein said solids content of said printing ink is approximately 60-70% by weight.
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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) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |