PRODUCTION METHOD FOR POWDER, PRODUCTION METHOD FOR MELT-MOLDED ARTICLE, POWDER, COMPRESSION-MOLDED ARTICLE, AND MELT-MOLDED ARTICLE

Title:

PRODUCTION METHOD FOR POWDER, PRODUCTION METHOD FOR MELT-MOLDED ARTICLE, POWDER, COMPRESSION-MOLDED ARTICLE, AND MELT-MOLDED ARTICLE

Document Type and Number:

WIPO Patent Application WO/2020/026981

Kind Code:

A1

Abstract:

One of the purposes of the present invention is to provide a production method that makes it possible to obtain a powder that makes it possible to suppress foaming of a molten material and to produce a molded article that has favorable conductivity and a favorable appearance by melt molding. A production method for a powder that includes a composite resin (2, 21, 22, 23) that includes a hot-melt resin (2a) and a conductive filler (2b). The production method for a powder comprises the following steps. A step for preparing a dispersion by mixing: a raw material powder that includes the hot-melt resin (2a); the conductive filler (2b); a dispersion medium in which the raw material powder and the conductive filler (2b) can be dispersed; and a dispersant (3) that makes the conductive filler (2b) disperse in the dispersion medium. A step for removing the dispersion medium from the dispersion and recovering an intermediate powder that includes the composite resin (2, 21, 22, 23) and the dispersant (3). A step for removing the dispersant (3) from the intermediate particles.

Inventors:

KODA YASUHITO (JP)
TAKADA KATSUNORI (JP)
IGARASHI HIROSHI (JP)

Application Number:

PCT/JP2019/029427

Publication Date:

February 06, 2020

Filing Date:

July 26, 2019

Export Citation:

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Assignee:

TAIYO NIPPON SANSO CORP (JP)

International Classes:

C08J3/12; C08J5/00

Domestic Patent References:

WO2018066706A1	2018-04-12
WO2006132254A1	2006-12-14

Foreign References:

JP2015214450A	2015-12-03
JP2015030821A	2015-02-16

Other References: