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Title:
OLEFIN-BASED RESIN, PRODUCTION METHOD THEREFOR, PROPYLENE-BASED RESIN COMPOSITION, AND MOLDED OBJECT COMPRISING SAID PROPYLENE-BASED RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/200090
Kind Code:
A1
Abstract:
The present invention relates to an olefin-based resin (β) satisfying the following requirements (I) to (VI). (I) The olefin-based resin (β) includes an olefin-based graft polymer [R1] comprising a main chain consisting of an ethylene/α-olefin copolymer and a side chain consisting of an ethylene polymer. (II) The olefin-based resin (β), in an examination by differential scanning calorimetry (DSC), shows a fusion peak in the range of 60-130°C and has a quantity of heat of fusion ΔH due to the fusion peak in the range of 5-100 J/g. (III) The proportion E of components soluble in orthodichlorobenzene having a temperature of 20°C or lower, as determined with a cross-fractionation chromatograph (CFC), is 65 mass% or less. (IV) The glass transition temperature Tg, as determined by differential scanning calorimetry (DSC), is in the range of -80 to -65°C. (V) The intrinsic viscosity [ƞ] measured in 135°C decalin is in the range of 0.5-1.2 dl/g. (VI) The MFR obtained at 190°C and a load of 2.16 kg in accordance with ASTM D1238E is in the range of 35-180 g/10 min. This olefin-based resin has excellent pellet handleability and, when used as a modifier for polypropylene resins, can give propylene-based resin compositions having an excellent balance among flowability, impact resistance, and a low coefficient of linear expansion.

Inventors:
NOGUCHI MIKIKO (JP)
YANAGIMOTO YASUSHI (JP)
NAKAMURA TATSUYA (JP)
KATO TAKASHI (JP)
ITAKURA KEITA (JP)
Application Number:
PCT/JP2021/010488
Publication Date:
October 07, 2021
Filing Date:
March 16, 2021
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
PRIME POLYMER CO LTD (JP)
International Classes:
C08F255/02; C08F4/6592; C08F210/02; C08L23/10; C08L51/06
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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