Phase change ink compositions comprising mixtures of ester of tartaric acid and ester of citric acid as amorphous materials
View Patent ↗The disclosure provides phase change ink compositions comprising an amorphous material comprising mixtures of ester of tartaric acid and ester of citric acid.
1. A phase change ink comprising:
a crystalline component; and
an amorphous component material comprising a mixture of dicyclohexyl L-tartrate and tricyclohexyl citrate;
wherein the mol % ratio of the ester tartaric acid to the ester citric acid is from about 50:50 to about 75:25; wherein the amorphous component material has a glass transition temperature of from about −11° C. to about −14° C.
2. The phase change ink of claim 1 , wherein the amorphous component material is present in an amount of from about 5 percent to about 40 percent by weight of the total weight of the phase change ink.
3. The phase change ink of claim 1 , wherein the crystalline/amorphous ratio is from about 60/40 to about 95/5.
4. The phase change ink of claim 1 further comprising a colorant selected from the group consisting of a pigment, dye and mixtures thereof.
5. The phase change ink of claim 1 having a viscosity of less than 22 cps at a temperature of about 140° C.
6. The phase change ink of claim 1 having a viscosity of greater than 10 6 cps at room temperature.
7. The phase change ink of claim 1 having a jetting temperature of from about 100 to about 140° C.