# US 2020/0399488 A1 · Particle composition

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- Number: US 2020/0399488 A1
- Document ID: US20200399488A1
- Status: Published application
- Kind: A1
- Application number: 16/975,296
- Filed: 2019-02-25
- Published: 2020-12-24
- Earliest claimed: 2018-02-28
- Assignees: Sumitomo Chemical Company, Limited; Tokyo Institute of Technology
- Applicants: Sumitomo Chemical Company, Limited; Tokyo Institute of Technology
- Inventors: Toshiyuki IKOMA; Ryohei HAMANO; Satoshi YOKOI; Norifumi AZUMA; Kousuke UOE
- Web page: https://patentgrep.com/patent/US20200399488A1

## CPC

- C04B 35/111: Fine ceramics
- C09D 11/106: containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- B33Y 70/10: Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
- C04B 20/026: {Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos}
- C04B 20/1033: {obtained by reactions only involving carbon-to-carbon unsaturated bonds}
- C04B 28/06: Aluminous cements (monolithic refractories or refractory mortars C04B35/66)
- C04B 35/622: Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B 35/6261: {Milling}
- C04B 35/62802: {Powder coating materials}
- C04B 35/63416: {Polyvinylalcohols [PVA]; Polyvinylacetates}
- C04B 35/63424: {Polyacrylates; Polymethacrylates}
- C04B 35/64: Burning or sintering processes (C04B33/32 takes precedence {; powder metallurgy B22F})
- C09D 11/037: characterised by the pigment
- C09D 11/322: Pigment inks
- B28B 1/001: {Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material (selective deposition modelling of metallic powder B22F10/00; rapid manufacturing of 3D objects in general and in particular of plastics B29C64/00)}
- C04B 2111/00181: {Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping}
- C04B 2235/3217: Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B 2235/3218: Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
- C04B 2235/322: Transition aluminas, e.g. delta or gamma aluminas
- C04B 2235/5436: micrometer sized, i.e. from 1 to 100 micron
- C04B 2235/5463: Particle size distributions
- C04B 2235/6026: Computer aided shaping, e.g. rapid prototyping
- C04B 2235/608: Green bodies or pre-forms with well-defined density
- C04B 2235/9615: Linear firing shrinkage
- Y02P 10/25: Process efficiency
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- 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)
- B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B28B: SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A particle composition according to the present invention contains: hydraulic alumina particles; and a water-absorbing polymer.

## Claims

### Claim 1

A particle composition, containing:
hydraulic alumina particles; and
a water-absorbing polymer.

### Claim 2 (depends on 1)

The particle composition according to claim 1,
wherein a content of the hydraulic alumina particles is 60 mass % or more.

### Claim 3 (depends on 1)

The particle composition according to claim 1,
wherein a content of the water-absorbing polymer is from 1 mass % to 40 mass %.

### Claim 4 (depends on 1)

The particle composition according to claim 1,
wherein at least a part of the water-absorbing polymer covers at least a part of a surface of the hydraulic alumina particles.

### Claim 5 (depends on 1)

The particle composition according to claim 1,
wherein the particle composition is for additive fabrication.