RESIN COMPOSITION FOR POWDER LAMINATION SHAPING METHOD, POWDER, SHAPED ARTICLE MANUFACTURING METHOD, AND SHAPED ARTICLE

Title:

RESIN COMPOSITION FOR POWDER LAMINATION SHAPING METHOD, POWDER, SHAPED ARTICLE MANUFACTURING METHOD, AND SHAPED ARTICLE

Document Type and Number:

WIPO Patent Application WO/2022/039158

Kind Code:

A1

Abstract:

The present invention provides: a resin composition which is for a powder lamination shaping method and in which fusion-bonding of powder during preheating performed for 3D-printer shaping is suppressed; a pellet; a powder; a shaped article manufacturing method; and a shaped article. This resin composition is used for a powder lamination shaping method and contains a phosphorus atom-containing compound and a polybutylene terephthalate-based resin having a structural unit derived from terephthalic acid and a structural unit derived from 1,4-butanediol. When the resin composition is formed into a powder having a particle diameter D50 in the range of 20-80 μm, and when the powder is treated for 1 hour at a temperature lower, by 25℃, than a melting point of the polybutylene terephthalate-based resin measured using differential scanning calorimetry, the shear stress of the powder is 0.30 N/cm2 or less.

Inventors:

SHOJI HIDEKAZU (JP)
KISHISHITA MINORU (JP)
YAMASUE NAO (JP)

Application Number:

PCT/JP2021/030031

Publication Date:

February 24, 2022

Filing Date:

August 17, 2021

Export Citation:

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Assignee:

MITSUBISHI ENG PLASTICS CORP (JP)
MITSUBISHI CHEM CORP (JP)

International Classes:

C08K5/5313; B29C64/153; B33Y70/00; C08G63/183; C08L67/02

Domestic Patent References:

WO2020043573A1	2020-03-05
WO2020138188A1	2020-07-02
WO2016121013A1	2016-08-04
WO2017179139A1	2017-10-19

Foreign References:

JP2019001154A	2019-01-10
JP2018149800A	2018-09-27
JP2020037665A	2020-03-12
JP6033994B1	2016-11-30
JP2013155279A	2013-08-15
JP2017155147A	2017-09-07
JP2020084037A	2020-06-04

Other References: