Title:
METHOD FOR PRODUCING POLYLACTIC RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2012/086192
Kind Code:
A1
Abstract:
A method for producing a polylactic resin composition, said method comprising kneading a mixture, which contains a polylactic resin and a surface-treated inorganic powder, using a mutual meshing engagement type twin-screw extruder, with the mutual meshing engagement type twin-screw extruder satisfying requirements 1-3. Requirement 1: being provided with: a first temperature-determining zone, said first temperature-determining zone being formed so as to include an area at least 6.3D-13Dmm apart from the center position of a starting material-supply port of a barrel, setting the barrel temperature to (Tm+50)-(Tm+80)oC, and being provided with screws to which conveyance elements are attached; and a second temperature-determining zone, said second temperature-determining zone being formed so as to include an area at least 19.3Dmm or greater apart from the center position of the starting material-supply port of the barrel and setting the barrel temperature to (Tm-20)-(Tm+40)oC. Requirement 2: being provided with a first kneading part, said first kneading part having a length of 1D-4D mm and being provided with screws having kneading elements attached thereto, in an area 13D-20.9Dmm apart from the center position of the starting material-supply port of the barrel. Requirement 3: being provided with a second kneading part, said second kneading part having a length of 1D-4D mm and being provided with screws having kneading elements attached thereto, in an area of 20.9Dmm or greater apart from the center position of the starting material-supply port of the barrel.
Inventors:
KISHIMOTO, Hiroaki (C/O KAO CORPORATION, Research Laboratories 1334, Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
岸本 洋昭 (〒80 和歌山県和歌山市湊１３３４ 花王株式会社 和歌山研究所内 Wakayama, 〒6408580, JP)
岸本 洋昭 (〒80 和歌山県和歌山市湊１３３４ 花王株式会社 和歌山研究所内 Wakayama, 〒6408580, JP)
Application Number:
JP2011/007130
Publication Date:
June 28, 2012
Filing Date:
December 20, 2011
Export Citation:
Assignee:
KAO CORPORATION (14-10, Nihonbashi-Kayabacho 1-chome Chuo-k, Tokyo 10, 〒1038210, JP)
花王株式会社 (〒10 東京都中央区日本橋茅場町１丁目１４番１０号 Tokyo, 〒1038210, JP)
KISHIMOTO, Hiroaki (C/O KAO CORPORATION, Research Laboratories 1334, Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
花王株式会社 (〒10 東京都中央区日本橋茅場町１丁目１４番１０号 Tokyo, 〒1038210, JP)
KISHIMOTO, Hiroaki (C/O KAO CORPORATION, Research Laboratories 1334, Minato, Wakayama-sh, Wakayama 80, 〒6408580, JP)
International Classes:
B29B7/48; B29B7/72; B29B7/90; C08J3/20; C08K9/00; C08L67/04; B29K67/00; C08L101/16
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (Osaka-Marubeni Bldg, 5-7 Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, 〒5410053, JP)
Claims:
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