Title:
POLYPROPYLENE RESIN COMPOSITION
Document Type and Number:
Japanese Patent JP2019065276
Kind Code:
A
Abstract:
To provide a polypropylene resin composition capable of providing an extrusion sheet for heat molding, excellent in transparency and excellent in drawdown resistance or stretchability at good moldability.SOLUTION: There is provided a polypropylene resin composition (X) containing 100 pts.mass of a resin composition (A) containing a polypropylene resin (A-1) and 1 to 40 pts.mass of an alicyclic hydrocarbon resin (B) having softening temperature of 70°C to 160°C, in which the resin composition (A) satisfies following requirements (a1) and (a2), the polypropylene resin composition (X) satisfies a following requirement (x1). (a1) melt flow rate (230°C, 2.16 kg load) (MFR(A)) is 40 g/10 min or less. (a2) strain hardening index λ is 1.1 or more. (x1) isothermal crystallization time of the polypropylene resin composition (X) (t(X)) (sec.) calculated by a differential thermal scanning type calorimeter (DSC) satisfies a following Formula (x-1). t(X)/t(A)>1.00 Formula (x-1).SELECTED DRAWING: None
Inventors:
KATSUNO SATOSHI
Application Number:
JP2018180056A
Publication Date:
April 25, 2019
Filing Date:
September 26, 2018
Export Citation:
Assignee:
JAPAN POLYPROPYLENE CORP
International Classes:
C08L23/10; B29C48/88; B29C51/02; C08L45/00
Domestic Patent References:
| JP2009299018A | 2009-12-24 | |||
| JP2016011380A | 2016-01-21 | |||
| JPH10202738A | 1998-08-04 | |||
| JP2009298140A | 2009-12-24 | |||
| JP2010168052A | 2010-08-05 |
Attorney, Agent or Firm:
Kishimoto Tatsuto
Akihiko Yamashita
Noriyuki Yamamoto
Akihiko Yamashita
Noriyuki Yamamoto