Water-dispersible polyesters imparting improved water resistance properties to inks
AssigneeEastman Kodak Company
InventorsLinda J. Adams, George J. O'Neill
Life of this patent
Estimating the term…
Abstract
Disclosed are water-dispersible polyesters which impart improved water resistance and block resistance properties to printing inks. Typical polyesters contain about 90 to 97 mole % isophthalic acid, about 3 to about 10 mole % 5-sodiosulfoisophthalic acid, about 70 to about 85 mole % 1,4-cyclohexanedimethanol, and about 15 to about 30 mole % diethylene glycol, based on the total of all acid and hydroxy moiety repeating units being equal to 200 mole %.
Claims28
A linear, water-dissipatable polyester having an inherent viscosity of at least about 0.1 as measured in a 60/40 parts by weight solution of phenol/tetrachloroethane at 25.degree. C. and at a concentration of 0.5 gram of polyester in 100 ml of solvent, the polyester containing substantially equimolar proportions of acid moiety repeating units (100 mole %) to hydroxy moiety repeating units (100 mole %), the polyester comprising repeating units of components (a), (b), (c) and (d), as follows wherein all stated mole percentages are based on the total of all acid and hydroxy moiety repeating units being equal to 200 mole %:
- (a) about 90 to about 97 mole % isophthalic acid,
- (b) about 3 to about 10 mole % 5-sulfoisophthalic acid,
- (c) about 70 to about 85 mole % 1,4-cyclohexanedimethanol, and
- (d) about 15 to about 30 mole % diethylene glycol.
An ink or concentrate thereof comprising
- (A) about 4 to about 80 weight percent of at least one linear, water-dissipatable polyester having an inherent viscosity of at least about 0.1 as measured in a 60/40 parts by weight solution of phenol/tetrachloroethane at 25.degree. C. and at a concentration of 0.5 gram of polyester in 100 ml of solvent, the polyester containing substantially equimolar proportions of acid moiety repeating units (100 mole %) to hydroxy moiety repeating units (100 mole %), the polyester comprising repeating units of components (1), (2), (3) and (4), as follows wherein all stated mole percentages are based on the total of all acid and hydroxy moiety repeating units being equal to 200 mole %:
- (1) about 90 to about 97 mole % isophthalic acid,
- (2) about 3 to about 10 mole % 5-sulfoisophthalic acid,
- (3) about 70 to about 85 mole % 1,4-cyclohexanedimethanol, and
- (4) about 15 to about 30 mole % diethylene glycol,
- (B) about 0 to about 45 weight percent of at least one colorant, and
- (C) about 15 to about 95 weight percent water.
Dependencies are inferred from the claim text.