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Title:
POLYPROPYLENE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/193813
Kind Code:
A1
Abstract:
A polypropylene composition including: as a component (A), a propylene (co)polymer that includes 0-2 wt% of a comonomer-derived unit selected from the group consisting of ethylene, a C4-C10-α-olefin, and a combination of these; and as a component (B), a phosphoric acid ester-based nucleating agent with an average grain size of 1-10 μm as measured by an image analysis method. The component (A) is a polymer that is obtained by using a solid catalyst and an organic aluminum compound-including catalyst to polymerize corresponding monomers, said solid catalyst including, as required components, Mg, Ti, a halogen, and an electron donor compound selected from succinate compounds. The MFR (temperature 230°C, load 2.16 kg) of the component (A) is 0.3-10 g/10 min, and the polydispersity index (PI) of the component (A) is 5-10. The polypropylene composition includes 0.02-0.15 parts by weight of the component (B) per 100 parts by weight of the component (A).

Inventors:
KIMURA HIDEHARU (JP)
NAKAJIMA TAKESHI (JP)
KURIYAMA MINORU (JP)
IKEDA MASAYUKI (JP)
Application Number:
PCT/JP2021/012510
Publication Date:
September 30, 2021
Filing Date:
March 25, 2021
Export Citation:
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Assignee:
SUNALLOMER LTD (JP)
International Classes:
C08L23/10; C08F4/654; C08F10/06; C08K5/053; C08K5/521
Domestic Patent References:
WO2011096282A12011-08-11
WO2013125504A12013-08-29
Foreign References:
JP2019044122A2019-03-22
JP2004083852A2004-03-18
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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