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US 5,849,833 AGranted
Method for improving drying speed in printing process and fast dry printing ink used therein
AssigneeRohm and Haas Company
InventorsCaren Ann Puschak, Anne Margarat Bacho, Gary Robert Larson, Matthew Stewart Gebhard, Alvin Charles Lavoie
Life of this patent
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Abstract
The present invention relates to fast drying waterborne printing inks and to method of using such inks in high speed printing processes, such rotogravure and flexographic printing processes. The printing ink includes, for example, a blend of a latex binder and a polyfunctional amine. The pH of the ink is raised by adding a sufficient amount of base, to a point where essentially all of the polyfunctional amine in the blend is in a deprotonated state.
Claims14
A printing ink composition comprising:
- a base, and
- (a) a blend of a latex binder with 0.5 to 10 weight percent based on the total weight of binder solids of a polyfunctional amine, or
- (b) an amine modified latex binder, or
- (c) a combination of said blend and said amine modified latex binder,
- wherein said latex binder and said amine modified latex binder are anionically stabilized, and
- wherein said latex binder comprises an amount of said base sufficient to raise the pH of said latex binder to a point wherein essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state.
3 more elements
A fast-dry printing ink composition comprising:
- a volatile base, and
- (a) a blend of a latex binder with 0.5 to 10 weight percent based on the total weight of latex binder solids of a polyfunctional amine, said latex binder having an acid number in the range of from 0.8 to 390, or
- (b) an amine modified latex binder having an acid number in the range of from 3 to 390, or
- (c) a combination of said blend and said amine modified latex binder,
- wherein said latex binder and said amine modified latex binder are anionically stabilized, and
- wherein said latex binder of said ink comprises an amount of said volatile base sufficient to raise the pH of said latex binder to a point wherein essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state.
3 more elements
A method for increasing the drying speed of a desired print pattern deposited on a substrate, said method comprising:
- depositing one or more layers of a printing ink composition on the surface of said substrate, said ink composition comprising:
- a base, and
- (a) a blend of a latex binder with 0.5 to 10 weight percent based on the total weight of latex binder solids of a polyfunctional amine, or
- (b) an amine modified latex binder, or
- (c) a combination of said blend and said amine modified latex binder,
- wherein said latex binder and said amine modified latex binder are anionically stabilized, and
- wherein said latex binder comprises an amount of said base sufficient to raise the pH of said latex binder to a point wherein essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state;
- and
- drying said one or more layers of said ink composition on said substrate surface to produce said desired print pattern thereon.
6 more elements
A method for printing a desired print pattern on a substrate comprising:
- depositing on the surface of said substrate a layer of a fast-dry printing ink composition comprising:
- a volatile base, and
- (a) a blend of a latex binder with 0.5 to 10 weight percent based on the total weight of latex binder solids of a polyfunctional amine, or
- (b) an amine modified latex binder, or
- (c) a combination of said blend and said amine modified latex binder,
- wherein said latex binder and said amine modified latex binder are anionically stabilized, and
- wherein said latex binder comprises an amount of said volatile base sufficient to raise the pH of said latex binder to a point wherein essentially all of said polyfunctional amine in said blend, or essentially all of said amine modified latex binder, or essentially all of said combination of said blend and said amine modified latex binder is in a deprotonated state;
- drying said layer to form a blemish resistant film on said substrate;
- depositing another layer of said printing ink composition on top of said blemish resistant film;
- and
- drying said another layer to produce said desired print pattern on said substrate.
8 more elements
Dependencies are inferred from the claim text.