# US 12,215,235 B2 · Composite member

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- Number: US 12,215,235 B2
- Document ID: US12215235B2
- Status: Granted
- Kind: B2
- Application number: 18/016,416
- Filed: 2021-07-02
- Published: 2023-08-31
- Granted: 2025-02-04
- Earliest claimed: 2020-07-22
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Naoki Kurizoe; Natsuki Sato; Tatsuro Yoshioka; Ryosuke Sawa; Koki Iwata
- Web page: https://patentgrep.com/patent/US12215235B2

## CPC

- C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- B32B 5/16: characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)}
- B32B 9/005: {comprising one layer of ceramic material, e.g. porcelain, ceramic tile (layered products with at least two ceramic layers composed mainly of ceramic B32B18/00)}
- B32B 9/045: {of synthetic resin}
- B32B 27/06: as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)}
- B32B 27/14: next to a particulate layer
- B32B 27/18: characterised by the use of special additives
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 37/24: with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate (B32B37/15 takes precedence)
- C08K 3/22: of metals
- C08K 3/36: Silica
- B32B 2250/02: 2 layers
- B32B 2264/10: Inorganic particles
- B32B 2264/102: Oxide or hydroxide
- B32B 2264/1021: Silica
- B32B 2264/1023: Alumina
- B32B 2264/1025: Zinc oxide
- B32B 2305/026: Porous
- C08K 2003/2227: {of aluminium}
- 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)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Provided is a composite member, including: an inorganic layer that contains an inorganic substance containing at least one of a metal oxide or a metal oxide hydroxide. The composite member includes a resin layer that is provided on a surface of the inorganic layer and contains a resin and inorganic particles that are dispersed in the resin and some of which adhere directly to the inorganic substance of the inorganic layer. A porosity in a cross section of the inorganic layer is 20% or less, and a peak derived from a hydroxyl group is detected for the inorganic layer when measurement is performed using infrared spectroscopy or X-ray diffraction.

## Claims

### Claim 1

A composite member, comprising:
an inorganic layer that includes an inorganic substance comprising a metal oxide hydroxide; and
a resin layer that is provided on a surface of the inorganic layer and includes a resin and inorganic particles that are dispersed in the resin and a plurality of the inorganic particles adhere directly to the inorganic substance of the inorganic layer, wherein
a porosity in a cross section of the inorganic layer is 20% or less, and
a peak derived from a hydroxyl group is detected for the inorganic layer when measurement is performed using infrared spectroscopy or X-ray diffraction.

### Claim 2 (depends on 1)

The composite member according to claim 1, wherein
the porosity in the cross section of the inorganic layer is 10% or less.

### Claim 3 (depends on 1)

The composite member according to claim 1, wherein the inorganic particles have a hydroxyl group.

### Claim 4 (depends on 1)

The composite member according to claim 1, wherein some of the inorganic particles and the inorganic substance contained in the inorganic layer are continuously bound to each other.

### Claim 5 (depends on 1)

The composite member according to claim 1, wherein the inorganic particles comprise a metallic element contained in the inorganic substance of the inorganic layer.

### Claim 6 (depends on 1)

The composite member according to claim 1, wherein the resin layer contains 10 vol % or more and 70 vol % or less of the inorganic particles.

### Claim 7 (depends on 1)

The composite member according to claim 1, wherein the inorganic substance contained in the inorganic layer is polycrystalline.