# US 2018/0022924 A1 · Coated product

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- Number: US 2018/0022924 A1
- Document ID: US20180022924A1
- Status: Published application
- Kind: A1
- Application number: 15/550,026
- Filed: 2016-02-08
- Published: 2018-01-25
- Earliest claimed: 2015-02-11
- Assignees: Huntsman P&A UK Limited
- Applicants: Huntsman P&A UK Limited
- Inventors: JOHN TEMPERLEY; JOHN L. EDWARDS; JOHN ROBB
- Web page: https://patentgrep.com/patent/US20180022924A1

## CPC

- C09C 1/3653: {Treatment with inorganic compounds}
- C08K 9/02: Ingredients treated with inorganic substances
- C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes
- C09D 7/61: inorganic
- C09D 7/62: modified by treatment with other compounds
- C01P 2004/62: Submicrometer sized, i.e. from 0.1-1 micrometer
- C01P 2006/60: Optical properties, e.g. expressed in CIELAB-values
- C08K 2003/2241: {Titanium dioxide}
- C08K 2201/005: Additives being defined by their particle size in general
- 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}
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

A coated particulate inorganic material includes a particulate inorganic material selected from at least one of titanium dioxide and a doped titanium dioxide, and a coating. The particulate inorganic material has an average crystal size of 0.4-2 μm. The coating includes a first and second layer. The first layer includes an inorganic oxide and/or an inorganic phosphate. The second layer is alumina. The first layer is from 0.1 to 2.2% w/w based on a total weight of the first layer with respect to a total weight of the particulate inorganic material. The second layer is 0.1 to 3.5% w/w based on a total weight of the second layer with respect to the total weight of the particulate inorganic material. The coating is from 0.2 to 4.5% w/w based on the total weight of the first and second layer with respect to the total weight of the particulate inorganic material.

## Claims

### Claim at position 1

1-20. (canceled)

### Claim at position 2

21: A coated particulate inorganic material comprising:
a particulate inorganic material selected from at least one of titanium dioxide and a doped titanium dioxide, the particulate inorganic material having an average crystal size of from 0.4 μm to 2 μm; and
a coating on the particulate inorganic material, the coating comprising a first layer and a second layer,
the first layer comprising at least one of at least one inorganic oxide and at least one inorganic phosphate,
each of the at least one inorganic oxide being independently selected from an oxide of:
group 4 (IVB) and group 12 (IIB) transition metals selected from Ti, Zr and Zn;
group 13 to group 15 (IIIA-VA) p-block elements selected from Si, P and Sn; and
lanthanides; and
each of the at least one inorganic phosphate being independently selected from a phosphate of:
group 1 (IA) alkali metals and group 2 (IIA) alkaline earth metals selected from H, Li, Na, K, Rb, Be, Mg, Ca and Sr;
group 3 (IIIA) and group 4 (IVB) transition metals selected from Sc, Y, Ti and Zr; and
group 13 to group 15 (IIIA-VA) p-block elements selected from Al, Ga, In, Tl, Ge, Sn and Pb; and
the second layer being alumina;
wherein,
the first layer on the particulate inorganic material is from 0.1 to 2.2% w/w based on a total weight of the first layer with respect to a total weight of the particulate inorganic material,
the second layer on the particulate inorganic material is 0.1 to 3.5% w/w based on a total weight of the second layer with respect to the total weight of the particulate inorganic material, and
the coating on the particulate inorganic material is from 0.2 to 4.5% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material.

### Claim at position 3 (depends on 21)

22: The particulate material as recited in claim 21, wherein, the first layer comprises at least one of:
the least one inorganic oxide independently selected from an oxide of Ti, Zr, Zn, Si, P, Sn and Ce, and
the at least one inorganic phosphate independently selected from a phosphate of Al, Ti, Zr, and Sn.

### Claim at position 4 (depends on 22)

23: The particulate material as recited in claim 22, wherein the first layer is at least one of:
the least one inorganic oxide independently selected from an oxide of Zr, Si, P, and Ce,
the at least one inorganic phosphate independently selected from a phosphate of Al and Zr.

### Claim at position 5 (depends on 23)

24: The particulate material as recited in claim 23, wherein the first layer comprises at least one of a silica and aluminium phosphate.

### Claim at position 6 (depends on 24)

25: The particulate material as recited in claim 24, wherein the first layer comprises a silica.

### Claim at position 7 (depends on 25)

26: The particulate material as recited in claim 25, wherein the first layer comprises a dense silica.

### Claim at position 8 (depends on 21)

27: The particulate material as recited in claim 21, wherein,
the first layer on the particulate inorganic material is from 0.1 to 2% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.2 to 1.5% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.3 to 1.4% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.4 to 1.3% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.5 to 1.2% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.7 to 1.2% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material.

### Claim at position 9 (depends on 21)

28: The particulate material as recited in claim 21, wherein,
the first layer on the particulate inorganic material is from 0.3 to 1.2% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.3 to 1.1% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.4 to 1.1% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.5 to 1% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.6 to 1% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material, or
the first layer on the particulate inorganic material is from 0.7 to 1% w/w based on the total weight of the first layer with respect to the total weight of the particulate inorganic material.

### Claim at position 10 (depends on 21)

29: The particulate material as recited in claim 21, wherein,
the second layer on the particulate inorganic material is 0.2 to 3.5% w/w based on the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the second layer on the particulate inorganic material is 0.3 to 3.5% w/w based on the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the second layer on the particulate inorganic material is 0.4 to 3.2% w/w based on the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the second layer on the particulate inorganic material is 0.4 to 3.1% w/w based on the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the second layer on the particulate inorganic material is 0.5 to 3% w/w based on the total weight of the second layer with respect to the total weight of the particulate inorganic material.

### Claim at position 11 (depends on 21)

30: The particulate material as recited in claim 21, wherein,
the coating on the particulate inorganic material is from 0.3 to 4.5% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 0.5 to 4.5% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1 to 4.3% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1.2 to 4.2% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1.5 to 4.2% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1.6 to 4.1% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material.

### Claim at position 12 (depends on 21)

31: The particulate material as recited in claim 21, wherein,
the coating on the particulate inorganic material is from 0.7 to 4.3% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 0.8 to 4.2% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1 to 4.1% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1.5 to 3.5% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1.5 to 3.3% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material, or
the coating on the particulate inorganic material is from 1.6 to 3.2% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material.

### Claim at position 13 (depends on 21)

32: A product comprising:
the coated inorganic particulate material as recited in claim 21; and
a carrier.

### Claim at position 14 (depends on 32)

33: The product as recited in claim 32, wherein,
the product is a paint, and
the carrier is a resin.

### Claim at position 15 (depends on 33)

34: The product as recited in claim 33, wherein the resin has an attenuation coefficient at 300 nm of below 0.02/micron.

### Claim at position 16 (depends on 34)

35: The product as recited in claim 34, wherein the attenuation coefficient of the resin at 300 nm is below 0.015/micron.

### Claim at position 17 (depends on 34)

36: The product as recited in claim 34, wherein the attenuation coefficient of the resin at 300 nm is below 0.012/micron.

### Claim at position 18 (depends on 33)

37: The product as recited in claim 33, wherein the resin is selected from polyester melamine formaldehyde, PVDF acrylic, and acrylic melamine formaldehyde.

### Claim at position 19

38: A method of preparing a coated particulate inorganic material, the method comprising:
providing a particulate inorganic material selected from at least one of titanium dioxide and a doped titanium dioxide, the particulate inorganic material having an average crystal size of from 0.4 μm to 2 μm; and
applying a coating on the particulate inorganic material, the coating comprising a first layer and a second layer,
the first layer comprising at least one of at least one inorganic oxide and at least one inorganic phosphate,
each of the at least one inorganic oxide being independently selected from an oxide of:
group 4 (IVB) and group 12 (IIB) transition metals selected from Ti, Zr and Zn;
group 13 to group 15 (IIIA-VA) p-block elements selected from Si, P and Sn; and
lanthanides; and
each of the at least one inorganic phosphate being independently selected from a phosphate of:
group 1 (IA) alkali metals and group 2 (IIA) alkaline earth metals selected from H, Li, Na, K, Rb, Be, Mg, Ca and Sr;
group 3 (IIIA) and group 4 (IVB) transition metals selected from Sc, Y, Ti and Zr; and
group 13 to group 15 (IIIA-VA) p-block elements selected from Al, Ga, In, Tl, Ge, Sn and Pb; and
the second layer being alumina;
wherein,
the first layer on the particulate inorganic material is from 0.1 to 2.2% w/w based on a total weight of the first layer with respect to a total weight of the particulate inorganic material,
the second layer on the particulate inorganic material is 0.1 to 3.5% w/w based on a total weight of the second layer with respect to the total weight of the particulate inorganic material, and
the coating on the particulate inorganic material is from 0.2 to 4.5% w/w based on the total weight of the first layer and the total weight of the second layer with respect to the total weight of the particulate inorganic material.