Nail varnish composition containing embossed effect pigments and surface-modified embossed effect pigments

Patent metadata

Field	Value
Publication number	US-11617707-B2
Application number	US-201816756161-A
Country	US
Kind code	B2
Filing date	Oct 18, 2018
Priority date	Oct 18, 2017
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

The invention relates to a nail varnish composition comprising:
a) an embossed effect pigment comprising a metallic substrate in platelet form with embossed structure having a periodic pattern with diffractive elements, said substrate having been produced by PVD methods, and optionally at least one coating applied to the substrate, wherein the substrate has an elemental metal content of 80% to 100% by weight, based on the substrate, and wherein the effect pigment has been treated with a leafing additive for surface modification, b) at least one hydrocarbon resin as binder, c) at least one solvent or solvent mixture and d) optionally further auxiliaries.

The invention further relates to a process for producing the nail varnish composition.

First claim

The invention claimed is:

1. A nail varnish composition comprising:
a) an embossed effect pigment comprising a metallic substrate in platelet form with embossed structure having a periodic pattern with diffractive elements, the substrate having been produced by PVD methods, wherein the substrate has an elemental metal content of 80% to 100% by weight, based on the substrate, and wherein the effect pigment has been treated with a leafing additive for surface modification, and the leading additive includes laurylphosphonic acid methyl ester, laurylphosphonic acid ethyl ester, laurylphosphonic acid (R=12), monocetylphosphoric ester, dicetylphosphoric ester (R=16), or mixtures thereof
b) a binder including at least one hydrocarbon resin, and
c) at least one solvent or solvent mixture.

2. The nail varnish composition as claimed in claim 1 , wherein the metallic substrate in platelet form with an embossed structure has 5,000 to 20,000 diffractive elements/cm.

3. The nail varnish composition as claimed in claim 1 , wherein the metallic substrate in platelet form with embossed structure includes aluminum, copper, chromium, iron, or alloys thereof.

4. The nail varnish composition as claimed in claim 3 , wherein the metallic substrate in platelet form with embossed structure includes aluminum.

5. The nail varnish composition as claimed in claim 1 , wherein the at least one hydrocarbon resin includes a coumarone-indene resin, a polystyrene-containing resin, a resin derived from a formaldehyde resin by polycondensation, or mixtures thereof.

6. The nail varnish composition as claimed in claim 5 , wherein the at least one hydrocarbon resin includes a polystyrene-containing resin obtained predominantly to entirely by polymerization of different styrene monomers.

7. The nail varnish composition as claimed in claim 1 , wherein the at least one hydrocarbon resin accounts for 80% to 100% by weight of the overall binder.

8. The nail varnish compositions as claimed in claim 1 , wherein the content of the at least one hydrocarbon resin is within a range from 25% by weight to 63% by weight, based on the overall nail varnish composition.

9. The nail varnish compositions as claimed in claim 1 , wherein the at least one hydrocarbon resin includes at least two different hydrocarbon resins, a first resin of the at least two different hydrocarbon resins having a first average molecular weight M W ranging from 1000 to 2000 g/mol, a second resin of the at least two different hydrocarbon resins having a second average molecular weight M W ranging from 4000 to 5900 g/mol, and the first resin and the second resin being included in a weight ratio of 1:1 to 1:10.

10. The nail varnish compositions as claimed in claim 9 , wherein the first average molecular weight M W ranges from 1200 to1600 g/mol and the second average molecular weight M W ranges from 4500 to 5500 g/mol.

11. The nail varnish composition as claimed in claim 1 , comprising a solvent mixture including isopropanol, ethyl acetate and butyl acetate, wherein the solvent mixture of isopropanol, ethyl acetate and butyl acetate accounts for 70% to 100% by weight of the overall solvent.

12. The nail varnish composition as claimed in claim 5 , wherein the at least one hydrocarbon resin includes a polystyrene-containing resin obtained predominantly to entirely by polymerization of different, largely optically transparent, styrene monomers.

13. The nail varnish composition as claimed in claim 1 , the substrate including at least one coating applied thereon.

Assignees

• Eckart Gmbh

Inventors

• Schilling Christine
• Gebhard Ann-Katrin
• Schmidt Ulrich
• Struck Oliver

Classifications

• C09C1/644

  treated with organic compounds, e.g. polymers · CPC title

• A61K8/34

  Alcohols · CPC title

• A61K8/585

  Organosilicon compounds · CPC title

• A61K2800/437

  Diffractive phenomena; Photonic arrays · CPC title

• C09C1/0051

  comprising a stack of coating layers with alternating low and high refractive indices, wherein the first coating layer on the core surface has the low refractive index · CPC title