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US 5,854,308 AGranted
Water-based pigmented inks having silicone-containing polymer incorporated therein
AssigneeMinnesota Mining and Manufacturing Company
InventorsRichard J. Kuo, Smarajit Mitra, Charles E. Boyer, III, Daniel B. Pendergrass, Jr.
Life of this patent
Estimating the term…
Abstract
Water-based pigmented ink formulations are disclosed including a water soluble or water dispersible silicone-containing polymer additive comprising a vinyl silicone polymer. The additive significantly reduces kogation, mudcracking, and banding in some or all of the pigmented ink formulations.
Claims14
A water-based pigmented ink formulation comprising:
- a water soluble or water dispersible vinyl silicone polymer, pigment, dispersant, surfactant, and a water-based carrier liquid,
- wherein the vinyl silicone polymer is a graft copolymer having a silicone polymer backbone and vinyl polymer grafts,
- wherein the vinyl silicone polymer has the following formula:
- ##STR5## wherein G.sub.5 represent monovalent moieties which can independently be the same or different selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and -ZSA;
- A represents a vinyl polymeric segment consisting essentially of polymerized free radically polymerizable monomer, and Z is a divalent linking group;
- G.sub.6 represents monovalent moieties which can independently be the same or different selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and -ZSA;
- G.sub.2 comprises A;
- G.sub.4 comprises A;
- R.sub.1 represents monovalent moieties which can independently be the same or different and are selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and hydroxyl;
- R.sub.2 can independently be the same or different and represents divalent linking groups;
- R.sub.3 represents monovalent moieties which can independently be the same or different and are selected fiom the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and hydroxyl;
- R.sub.4 can independently be the same or different and are divalent linking groups;
- x is an integer of 0-3;
- y is an integer of 5 or greater;
- q is an integer of 0-3;
- wherein at least one of the following is true:
- q is an integer of at least 1;
- x is an integer of at least 1;
- G.sub.5 comprises at least one -ZSA moiety;
- G.sub.6 comprises at least one -ZSA moiety.
17 more elements
An ink, comprising:
- pigment, dispersant, surfactant, a water-based carrier liquid, and silicone-containing polymeric additive, wherein the additive is a vinyl silicone polymer having the following formula:
- ##STR6## wherein G.sub.5 represent monovalent moieties which can independently be the same or different selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and -ZSA;
- A represents a vinyl polymeric segment consisting essentially of polymerized free radically polymerizable monomer, and Z is a divalent linking group;
- G.sub.6 represents monovalent moieties which can independently be the same or different selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and -ZSA;
- G.sub.2 comprises A;
- G.sub.4 comprises A;
- R.sub.1 represents monovalent moieties which can independently be the same or different and are selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and hydroxyl;
- R.sub.2 can independently be the same or different and represents divalent linking groups;
- R.sub.3 represents monovalent moieties which can independently be the same or different and are selected from the group consisting of alkyl, aryl, alkaryl, alkoxy, alkylamino, fluoroalkyl, hydrogen, and hydroxyl;
- R.sub.4 can independently be the same or different and are divalent linking groups;
- x is an integer of 0-3;
- y is an integer of 5 or greater;
- q is an integer of 0-3;
- wherein at least one of the following is true:
- q is an integer of at least 1;
- x is an integer of at least 1;
- G.sub.5 comprises at least one -ZSA moiety;
- G.sub.6 comprises at least one -ZSA moiety.
15 more elements
The ink of claim 11, wherein the water-based carrier liquid is water.
The ink of claim 11, wherein the water-based carrier liquid is water and a water-miscible organic solvent.
Dependencies are inferred from the claim text.