METHOD FOR PRODUCING RESIN COMPOSITION

Title:

METHOD FOR PRODUCING RESIN COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2017/010511

Kind Code:

A1

Abstract:

Provided is a method for producing a resin composition stably at high productivity. Specifically, provided is a method for producing a resin composition for melt-kneading a thermoplastic resin having a transition temperature of less than 200°C and a powder using a twin-screw extruder wherein, in the method for producing a resin composition, the powder is one or more powders selected from the group comprising inorganic fillers having an apparent density of 0.1-1.5 g/mL and thermoplastic resin powders having an apparent density of 0.1-1.0 g/mL and a transition temperature of 200°C or higher, the thermoplastic resin having a transition temperature of less than 200°C is fed from a supply port to a twin-screw extruder, the powder is fed from a gravimetric feed to the twin-screw extruder through a screw-type side feeder, the carrying capacity of the screw-type side feeder is two times or more the effective volume of the powder per unit time, melt-kneading is conducted under conditions such that the resin pressure of a first kneading zone in the twin-screw extruder is 1 MPa or higher and the resin pressure of a second kneading zone is less than 3 MPa, and gas is removed from a vent port.

Inventors:

SANADA TAKASHI (JP)
SHIMANO MITSUYOSHI (JP)
KAMEO KOJI (JP)

Application Number:

PCT/JP2016/070680

Publication Date:

January 19, 2017

Filing Date:

July 13, 2016

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)

International Classes:

B29B7/46; B29B7/84; B29B7/88; B29B7/90

Foreign References:

JPH10193343A	1998-07-28
JPH04185647A	1992-07-02
JP2007197695A	2007-08-09
JP2009045804A	2009-03-05
JP2000246732A	2000-09-12
JP2009280710A	2009-12-03
JP2002220476A	2002-08-09
JPH05237914A	1993-09-17
JP2004027125A	2004-01-29

Other References: