POWDER MIXTURE, METHOD FOR PRODUCING SAME, POWDER COMPOSITION AND METHOD FOR PRODUCING THREE-DIMENSIONAL MODEL

Title:

POWDER MIXTURE, METHOD FOR PRODUCING SAME, POWDER COMPOSITION AND METHOD FOR PRODUCING THREE-DIMENSIONAL MODEL

Document Type and Number:

WIPO Patent Application WO/2020/090381

Kind Code:

A1

Abstract:

A powder mixture which contains a polybutylene terephthalate resin and a polycarbonate resin, and which is characterized in that: the average particle diameter thereof is more than 1 μm but 100 μm or less; the homogeneity thereof is 4 or less; the melting point thereof is more than 220°C; and the difference between the melting point thereof and the crystallization temperature thereof is 60°C or more. A powder composition which is characterized by containing inorganic fine particles that have an average particle diameter of 20-500 nm at a ratio of 0.1-5 parts by weight relative to 100 parts by weight of the powder mixture. The present invention efficiently provides a polybutylene terephthalate resin powder which is suitable as a material powder for the production of a three-dimensional model by means of a powder sintering 3D printer.

Inventors:

WATANABE KEI (JP)
TAKEDA KAZUSADA (JP)
ISHIBASHI JUNJI (JP)
MIYAMA HISASHI (JP)
NISHIDA MIKIYA (JP)

Application Number:

PCT/JP2019/039694

Publication Date:

May 07, 2020

Filing Date:

October 08, 2019

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)

International Classes:

C08L67/02; B29C64/153; B29C64/314; B33Y10/00; B33Y40/00; B33Y70/00; C08K3/00; C08L69/00

Domestic Patent References:

WO2017002443A1	2017-01-05
WO2016121013A1	2016-08-04

Foreign References:

JP2004143208A	2004-05-20
JP2001254009A	2001-09-18
JP2006321711A	2006-11-30
JP2004184606A	2004-07-02
JPS6033994B2	1985-08-06
JP2017019267A	2017-01-26

Other References: