Cosmetic Ink Composition Comprising A Surface Tension Modifier

Abstract

A cosmetic ink composition comprises a particulate material, a polymeric dispersant, a rheology modifier, and a surface tension modifier, wherein the surface tension modifier is selected from the group consisting of C1-C16 alcohols, C5-C18 diols, and mixtures thereof. The particulate material can have a Particle Size Distribution D50 of about 100 nm to about 2,000 nm. The rheology modifier can be selected from the group consisting of alkali swellable emulsion polymers, hydrophobically modified alkali swellable emulsion polymers, and combinations thereof. The cosmetic ink composition can have a surface tension of from about 20 to about 45 mN/m.

What is claimed is: 
     
         1 . A cosmetic ink composition comprising:
 a. from about 1 to about 45 active wt % of a particulate material having a Particle Size Distribution D50 of about 100 nm to about 2,000 nm;   b. a rheology modifier, wherein the rheology modifier is selected from the group consisting of an alkali swellable emulsion polymer, a hydrophobically modified alkali swellable emulsion polymer, and combinations thereof;   c. a polymeric dispersant; and   d. a surface tension modifier, wherein the surface tension modifier is selected from the group consisting of C1-C16 alcohols, C5-C18 diols, and mixtures thereof.   
     
     
         2 . The cosmetic ink composition of  claim 1 , wherein the particulate material has a Particle Size Distribution D90 of from about 700 nm to about 900 nm. 
     
     
         3 . The cosmetic ink composition of  claim 2  wherein the particulate material comprises titanium dioxide. 
     
     
         4 . The cosmetic ink composition of  claim 1  wherein the surface tension modifier is selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 2-methyl-2-propanol, farnesol, benzyl alcohol, phenyl ethyl alcohol, phenoxyethanol, 2-phenylphenol, methyl 4-hydroxybenzoate, ethyl 4-hydroxybenzoate, propyl 4-hydroxybenzoate, butyl 4-hydroxybenzoate, isobutyl 4-hydroxybenzoate, chloroxylenol, 2-methyl 5-cyclohexypentanol, triclosan, 1,2-pentanediol, 1,2-hexanediol, 1,6-hexanediol, 2-ethyl-1,3-hexanediol, 1,2-octanediol, 1,8-octanediol, 2-methyl 5-cyclohexypentanol, 1,2-decanediol, 3-[(2-Ethylhexyl)oxy]-1,2-propanediol, and mixtures thereof. 
     
     
         5 . The cosmetic ink composition of  claim 1  wherein the surface tension modifier is selected from the group consisting of 1,2-hexanediol, 1,2-octanediol, ethanol, farnesol, and mixtures thereof. 
     
     
         6 . The cosmetic ink composition of  claim 1  further comprising one or more skin care actives selected from the group consisting of niacinamide, inositol, and combinations thereof. 
     
     
         7 . The cosmetic ink composition of  claim 1  further comprising from about 20 to about 30 active wt % of a humectant. 
     
     
         8 . The cosmetic ink composition of  claim 1  wherein the cosmetic ink composition has a tan(delta) of less than about 0.60. 
     
     
         9 . A cosmetic ink composition comprising:
 a. from about 1 to about 45 active wt % of a particulate material;   b. greater than about 0.30 active wt % of a rheology modifier, wherein the rheology modifier is selected from the group consisting of a (meth)acrylate polymer, a (meth)acrylate copolymer, and mixtures thereof;   c. from about 0.01 to about 1 active wt % of a polymeric dispersant;   d. from about 0.1 to about 5 active wt % of a surface tension modifier, wherein the surface tension modifier is selected from the group consisting of C1-C16 alcohols, C5-C18 diols, and mixtures thereof; and   e. from about 10 to about 30 active wt % of a humectant.   
     
     
         10 . The cosmetic ink composition of  claim 9  wherein the cosmetic ink composition has a surface tension of from about 20 mN/m to about 45 mN/m. 
     
     
         11 . The cosmetic ink composition of  claim 9  wherein the surface tension modifier is a C6-C12 diol or a C15 alcohol. 
     
     
         12 . The cosmetic ink composition of  claim 9  wherein cosmetic ink composition has a first dynamic viscosity of greater than about 500 cP at a shear rate of 0.1 sec −1  measured at 25° C. and a second dynamic viscosity of less than about 100 cP at a shear rate of 1,000 sec −1  measured at 25° C. 
     
     
         13 . The cosmetic ink composition of  claim 11  wherein the particulate material has a Particle Size Distribution D50 of about 200 nm to about 350 nm. 
     
     
         14 . A cosmetic ink composition comprising:
 a. a particulate material comprising titanium dioxide;   b. a rheology modifier, wherein the rheology modifier is selected from the group consisting of a (meth)acrylate polymer, a (meth)acrylate copolymer, and mixtures thereof;   c. a polymeric dispersant; and   d. from about 0.1 to about 5 active wt % of a surface tension modifier, wherein the surface tension modifier is selected from the group consisting of C1-C16 alcohols, C5-C18 diols, and mixtures thereof.   
     
     
         15 . The cosmetic ink composition of  claim 14  wherein the titanium dioxide is substantially coated with a coating ingredient selected from silica, alumina, and combinations thereof. 
     
     
         16 . The cosmetic ink composition of  claim 15  wherein the cosmetic ink composition comprises greater than about 0.30 active wt % rheology modifier. 
     
     
         17 . The cosmetic ink composition of  claim 16  wherein the polymeric dispersant has a weight average molecular weight of from about 2,500 to about 4,000 daltons. 
     
     
         18 . The cosmetic ink composition of  claim 14  wherein the surface tension modifier is selected from the group consisting of 1,2-hexanediol, 1,2-octanediol, ethanol, farnesol, and mixtures thereof. 
     
     
         19 . The cosmetic ink composition of  claim 14  wherein the cosmetic ink composition has a surface tension of from about 20 mN/m to about 45 mN/m. 
     
     
         20 . The cosmetic ink composition of  claim 14  wherein the cosmetic ink composition has a tan(delta) of less than about 0.60.