Title:
ポリプロピレン樹脂組成物およびその用途
Document Type and Number:
Japanese Patent JP4083820
Kind Code:
B2
Abstract:
A polypropylene resin composition exibiting a high melt tension and superior moldability, which can be molded efficiently by a high-speed molding into scarcely deformable larger molded articles of better appearance with high stiffness and which comprises polypropylene as a main component and has the following characteristic features 1) to 4), namely, 1) thet a melt flow rate (MFR, determined at 230 DEG C under a load of 2.16 kg) is in the range of 0.01 to 5 g/10 min., 2) that a content of a high molecular weight polypropylene exhibiting an intrinsic viscosity Ä eta Ü , determined at 135 DEG C in decalin, of 8 - 13 dl/g is in the range of 15 to 50 % by weight, 3) that a gel areal density in number is 3,000/450 cm<2> or less and 4) that a molecular weight distribution determined by gel permeation chromatography (GPC) is 6 - 20, as expressed by Mw/Mn, and is 3.5 or higher, as expressed by Mz/Mw.
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Inventors:
Toru Takaoka
Ikuen Sakai
Hideki Nakagawa
Mikio Hashimoto
Satoshi Matsuura
Takashi Shimizu
Ikuen Sakai
Hideki Nakagawa
Mikio Hashimoto
Satoshi Matsuura
Takashi Shimizu
Application Number:
JP51196799A
Publication Date:
April 30, 2008
Filing Date:
August 04, 1998
Export Citation:
Assignee:
Prime Polymer Co., Ltd.
International Classes:
C08F10/06; B29C47/00; B29C55/28; C08F4/646; C08J5/18; C08J9/04; C08L23/10; C08L23/12; C08F110/06; C08L23/02; C08L23/08
Domestic Patent References:
| JP8120157A | ||||
| JP9263606A |
Attorney, Agent or Firm:
Shigeru Yanagihara