Wax-based coloring crayon with a watercolor effect

Patent metadata

Field	Value
Publication number	US-10774232-B2
Application number	US-201716075807-A
Country	US
Kind code	B2
Filing date	Feb 2, 2017
Priority date	Feb 5, 2016
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A wax-based coloring crayon for a porous surface and for a non-porous surface includes at least one wax, an ethoxylated fatty alcohol, stearin, a filler, at least one pigment, and optionally an additive.

First claim

The invention claimed is:

1. A wax-based coloring crayon for marking a porous surface and for a non-porous surface, the crayon comprising:
a) at least one wax;
b) an ethoxylated fatty alcohol;
c) stearin;
d) a filler; and
e) at least one pigment,
wherein the marking is dry erasable from the non-porous surface.

2. The coloring crayon according to claim 1 , wherein the at least one wax has at least one wax selected from the group consisting of: paraffin, monocrystalline wax, beeswax, polyethylene wax, pentaerythritol stearate, and mixtures thereof.

3. The coloring crayon according to claim 1 , wherein the at least one wax is present in an amount that is in a range of 5% to 75% by weight, relative to the total weight of the crayon.

4. The coloring crayon according to claim 1 , wherein the ethoxylated fatty alcohol is at least one alcohol selected from the group consisting of: ethoxylated cetyl alcohols, ethoxylated stearyl alcohols, ethoxylated cetyl and stearyl alcohols, and mixtures thereof.

5. The coloring crayon according to claim 1 , wherein the crayon has an amount of ethoxylated fatty alcohol that is in a range or 20% to 70% by weight, relative to the total weight of the crayon.

6. The coloring crayon according to claim 1 , wherein the crayon has an amount of stearin that is in a range of 30% to 40% by weight, relative to the total weight of the crayon.

7. The coloring crayon according to claim 1 , wherein the filler is at least one filler selected from the group consisting of: clay, kaolin, montmorillonite, bentonite, silica, mica, talc, calcium carbonate, magnesium silicate, aluminum silicate, and mixtures thereof.

8. The coloring crayon according to claim 1 , wherein the crayon has an amount of filler that is in a range of 5% to 40% by weight, relative to the total weight of the crayon.

9. The coloring crayon according to claim 1 , wherein the crayon has an amount of pigment that is in a range of 2% to 10% by weight, relative to the total weight of the crayon.

10. The coloring crayon according to claim 2 , further comprising an additive, wherein the crayon has an amount of additive that is in the range of 0% to 6% by weight relative to the total weight of the crayon.

11. The coloring crayon according to claim 2 , wherein the at least one wax is a mixture of paraffin and monocrystalline wax or a mixture of beeswax and monocrystalline wax.

12. The coloring crayon according to claim 3 , wherein the range of the wax is 15% to 35%.

13. The coloring crayon according to claim 4 , wherein the ethoxylated fatty alcohol is an ethoxylated cetyl and stearyl alcohol having the following formula I:
CH 3 —(CH 2 ) m —(O—CH 2 —CH 2 ) n —OH

in which m=15 or 17 and n represents an integer in the range of 2 to 100.

14. The coloring crayon according to claim 5 , wherein the range of the ethoxylated fatty alcohol is 25% to 45%.

15. The coloring crayon according to claim 6 , wherein the range of the stearin is 17% to 25%.

16. The coloring crayon according to claim 7 , wherein the filler is kaolin.

17. The coloring crayon according to claim 8 , wherein the range of the filler is 14% to 17%.

18. The coloring crayon according to claim 9 , wherein the range of the pigment is 2.5% to 5%.

19. The coloring crayon according to claim 10 , wherein the range of the additive is 1% to 6%.

20. A method of fabricating a wax-based coloring crayon for marking a porous surface and a non-porous surface, the method comprising:
heating at least one wax;
combining an ethoxylated fatty alcohol and at least one pigment with the at least one wax to yield a mixture; and
cooling the mixture to yield the wax-based coloring crayon,
wherein the marking is dry erasable from the non-porous surface.

Assignees

• SOCIéTé BIC

Inventors

• Gouerec Julien
• Danel Alice
• Lefebvre Philippe

Classifications

• C09D13/00 Primary

  Pencil-leads; Crayon compositions; Chalk compositions · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title

• C08K3/346

  Clay · CPC title

• C08K5/06

  Ethers; Acetals; Ketals; Ortho-esters · CPC title

• C08K5/11

  of acyclic polycarboxylic acids · CPC title