# US 11,111,390 B2 · Surface-modified effect pigment and nail varnish composition

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,111,390 B2
- Document ID: US11111390B2
- Status: Granted
- Kind: B2
- Application number: 16/093,717
- Filed: 2017-04-13
- Published: 2019-03-14
- Granted: 2021-09-07
- Earliest claimed: 2016-04-15
- Assignees: Eckart GmbH
- Applicants: ECKART GmbH
- Inventors: Christine Schilling; Ulrich Schmidt; Christina Pippinger; Ann-Katrin Gebhard
- Web page: https://patentgrep.com/patent/US11111390B2

## CPC

- C09C 1/644: {treated with organic compounds, e.g. polymers}
- A61K 8/0254: {Platelets; Flakes}
- A61K 8/26: Aluminium; Compounds thereof
- A61K 8/55: Phosphorus compounds
- A61K 8/72: containing organic macromolecular compounds
- A61K 8/8117: {Homopolymers or copolymers of aromatic olefines, e.g. polystyrene; Compositions of derivatives of such polymers}
- A61Q 3/02: Nail coatings
- C09C 1/0015: {Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings}
- C09C 1/627: {Copper}
- C09C 1/642: {treated with inorganic compounds}
- C09C 1/648: {treated with inorganic and organic, e.g. polymeric, compounds}
- C09C 1/66: Copper alloys, e.g. bronze
- A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns
- A61K 2800/436: Interference pigments, e.g. Iridescent, Pearlescent
- A61K 2800/612: By organic compounds
- A61K 2800/651: The particulate/core comprising inorganic material
- A61K 2800/805: Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
- C01P 2004/20: extending in two dimensions, e.g. plate-like
- C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer
- C01P 2006/60: Optical properties, e.g. expressed in CIELAB-values
- C09C 2200/102: the core consisting of glass or silicate material like mica or clays, e.g. kaolin
- C09C 2200/301: Thickness of the core
- C09C 2220/10: Wet methods, e.g. co-precipitation
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

The invention relates to a surface-modified effect pigment comprising particular additives and to the production thereof. The present invention further provides a nail varnish composition comprising a) at least one effect pigment that has been surface-modified with a starting material (additive), where the effect pigment comprises a substrate in platelet form and optionally at least one coating applied to the substrate, b) at least one hydrocarbon resin as binder, and c) at least one solvent or solvent mixture, where the starting material (additive) for surface modification of the effect pigment is at least one compound taken from the group consisting of phosphoric ester-containing, phosphonic ester-containing, phosphonic acid-containing, fatty acid-containing and/or silane-containing compounds or mixtures thereof.

## Claims

### Claim 1

A nail varnish composition comprising:
a) at least one effect pigment surface-modified with a starting material (additive), wherein the effect pigment comprises a PVD aluminum pigment in platelet form and optionally comprises at least one coating applied to the PVD aluminum pigment, the PVD aluminum pigment having an average thickness h50 ranging from 13 nm to 60 nm, and wherein the starting material (additive) used for surface modification of the PVD aluminum pigment or the coating comprises phosphoric acid cetyl ester in an amount ranging from 10% by weight to 50% by weight based on the total weight of the optionally coated PVD aluminum pigment;
b) at least one hydrocarbon resin as binder; and
c) at least one non-aqueous solvent.

### Claim 2 (depends on 1)

The nail varnish composition as claimed in claim 1, wherein the hydrocarbon resin comprises 80% to 100% by weight of the total weight of binder comprised in the nail varnish composition.

### Claim 3 (depends on 1)

The nail varnish compositions as claimed in claim 1, wherein the hydrocarbon resin comprises at least two different hydrocarbon resins having an average molecular weight MW of 1200 to 1600 and an average molecular weight MW of 4500 to 5500 in a weight ratio of 1:1 to 1:10.

### Claim 4 (depends on 1)

The nail varnish compositions as claimed in claim 1, wherein the content of hydrocarbon resin is within a range from 25% by weight to 64% by weight, based on the total weight of the nail varnish composition.

### Claim 5 (depends on 1)

The nail varnish composition as claimed in claim 1, comprising the non-aqueous solvent mixture, the non-aqueous solvent mixture comprising isopropanol, ethyl acetate and butyl acetate.

### Claim 6 (depends on 5)

The nail varnish composition as claimed in claim 5, wherein the non-aqueous solvent mixture of isopropanol, ethyl acetate and butyl acetate comprises 70% to 100% by weight of the total weight of solvent comprised in the nail varnish composition.

### Claim 7 (depends on 5)

The nail varnish composition as claimed in claim 5, wherein the proportion of isopropanol is below 20% by weight, based on the total weight of solvent comprised in the nail varnish composition.

### Claim 8 (depends on 1)

The nail varnish composition as claimed in claim 1, additionally comprising at least one of a plasticizer, antioxidant, antisettling agent, preservative, oil, wax, free-radical scavenger, wetting additive, dispersing aid, wetting agent, antifoam, perfume, neutralizing agent, thickener, UV blocker, humectant, vitamin, protein, and combinations thereof.

### Claim 9 (depends on 1)

The nail varnish composition as claimed in claim 1, wherein the nail varnish composition after application to a glass plate by means of a bar applicator in a wet film thickness of 100 μm and subsequent drying at room temperature has at least 150 gloss units, measured at 20° geometry, and at least 1200 haze units (Hlog).

### Claim 10

A nail varnish composition comprising
a) at least one effect pigment surface-modified with a starting material (additive), wherein the effect pigment comprises a PVD aluminum pigment and optionally comprises at least one coating applied to the PVD aluminum pigment,
b) at least one hydrocarbon resin as binder and
c) at least one non-aqueous solvent or non-aqueous solvent mixture,
wherein one or more of the coating and the starting material (additive) used for surface modification of the effect pigment comprises phosphoric acid cetyl ester.

### Claim 11 (depends on 10)

The nail varnish composition as claimed in claim 10, wherein the hydrocarbon resin comprises 80% to 100% by weight of the total weight of binder comprised in the nail varnish composition.

### Claim 12 (depends on 10)

The nail varnish compositions as claimed in claim 10, wherein the hydrocarbon resin comprises at least two different hydrocarbon resins having an average molecular weight MW of 1200 to 1600 and an average molecular weight MW of 4500 to 5500 in a weight ratio of 1:1 to 1:10.

### Claim 13 (depends on 10)

The nail varnish compositions as claimed in claim 10, wherein the content of hydrocarbon resin is within a range from 25% by weight to 64% by weight, based on the total weight of the nail varnish composition.

### Claim 14 (depends on 10)

The nail varnish composition as claimed in claim 10, comprising the non-aqueous solvent mixture, the non-aqueous solvent mixture comprising isopropanol, ethyl acetate and butyl acetate.

### Claim 15 (depends on 14)

The nail varnish composition as claimed in claim 14, wherein the non-aqueous solvent mixture of isopropanol, ethyl acetate and butyl acetate comprises 70% to 100% by weight of the total weight of solvent comprised in the nail varnish composition.

### Claim 16 (depends on 14)

The nail varnish composition as claimed in claim 14, wherein the proportion of isopropanol is below 20% by weight, based on the total weight of solvent comprised in the nail varnish composition.

### Claim 17 (depends on 10)

The nail varnish composition as claimed in claim 10, additionally comprising at least one of a plasticizer, antioxidant, antisettling agent, preservative, oil, wax, free-radical scavenger, wetting additive, dispersing aid, wetting agent, antifoam, perfume, neutralizing agent, thickener, UV blocker, humectant, vitamin, protein, and combinations thereof.

### Claim 18 (depends on 10)

The nail varnish composition as claimed in claim 10, wherein the nail varnish composition after application to a glass plate by means of a bar applicator in a wet film thickness of 100 μm and subsequent drying at room temperature has at least 150 gloss units, measured at 20° geometry, and at least 1200 haze units (Hlog).