Formulation comprising carnauba wax and at least one particular sorbitan monoester
The present invention deals with a formulation comprising at least one ethoxylated C 13 -C 19 sorbitan monoester, saturated or not; and carnauba wax. Furthermore, the present invention pertains to a coating dilution comprising said formulation and the use of the formulation or of the coating dilution as a cold-end coating on a glass-container.
1 . A formulation comprising:
between 2.5 wt % and less than 8.5 wt % of at least one ethoxylated C13-C19 sorbitan monoester, saturated or not, relative to a total formulation weight;
carnauba wax, and
particles, wherein in a number-based particle size distribution of the particles of the formulation, at least 50% of the particles have a size greater than 100 nanometers according to the number-based distribution analysis method.
2 . The formulation according to claim 1 , comprising from 11 to 25 wt % of carnauba wax relative to the total formulation weight.
3 . The formulation according to claim 1 , wherein a total weight of the carnauba wax and the at least one ethoxylated C13-C19 sorbitan monoester is between more than 12 and less than 35 wt %, relative to the total formulation weight.
4 . The formulation according to claim 1 , wherein a weight ratio R, defined by a ratio between a percentage in weight of the carnauba wax and a percentage in weight of the at least one ethoxylated C13-C19 sorbitan monoester is from 2.5 to 5.
5 . The formulation according to claim 1 , wherein the at least one ethoxylated C13-C19 sorbitan monoester has a hydrophile-lipophile balance from 13 to 17.
6 . The formulation according to claim 1 , wherein the at least one ethoxylated C13-C19 sorbitan monoester comprises more than 5 ethylene oxide groups.
7 . The formulation according to claim 1 , wherein the at least one ethoxylated C13-C19 sorbitan monoester is selected from the group consisting of sorbitan monostearate, sorbitan monopalmitate and sorbitan monooleate.
8 . The formulation according to claim 1 , further comprising one or more additional additives selected from the group consisting of biocides, bactericides, preservatives, ester alcohol, glycol ether, dyes, emulsion destabilizers, perfumes, odorants, UY absorbers, light absorbers, impact absorbers, surfactants other than sorbitan esters, oils other than mineral oils and the like.
9 . The formulation according to claim 1 , comprising more than 60 wt % of the carnauba wax relative to a total wax weight.
10 . A coating dilution comprising the formulation according to claim 1 .
11 . The coating dilution according to claim 10 , comprising from 0.5 to 10 wt % of the formulation relative to a total weight of the coating dilution.
12 . A cold-end coating on a glass surface comprising the formulation according to claim 1 .
13 . Coating process comprising at least a step a) of applying the formulation according to claim 1 to a glass surface.
14 . The coating process of claim 13 , further comprising a previous step a′) of applying a metal oxide treatment to the glass surface.
15 . Glass surface obtainable by the process of claim 13 .