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Title:
CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER, AND PROPYLENE/α-OLEFIN COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2018/207642
Kind Code:
A1
Abstract:
Provided is a catalyst for olefin polymerization which, even when used in homopolymerization at high temperatures, shows excellent hydrogen activity and can highly efficiently produce polymers having high stereoregularity and a high MFR and which, even when used in copolymerization at high temperatures, shows excellent hydrogen activity and copolymerization activity and can produce copolymers having excellent impact resistance. The catalyst for olefin polymerization is characterized by including, as an external electron-donating compound, a compound represented by the general formula R1R2Si(NHR3)2 (wherein R1 is a C3-12 cycloalkyl or C6-12 aromatic hydrocarbon group; R2 is a linear C1-10 alkyl or branched C3-10 alkyl group, the number of carbon atoms of R1 being larger by at least two than that of R2; and R3 is a linear C2-6 alkyl, branched C3-6 alkyl, or C3-6 cycloalkyl group).

Inventors:
HOSAKA MOTOKI (JP)
SUGANO TOSHIHIKO (JP)
Application Number:
PCT/JP2018/017013
Publication Date:
November 15, 2018
Filing Date:
April 26, 2018
Export Citation:
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Assignee:
TOHO TITANIUM CO LTD (JP)
International Classes:
C08F4/654; C08F10/06
Domestic Patent References:
WO2006129773A12006-12-07
WO2008050883A12008-05-02
WO2010106888A12010-09-23
WO2004016662A12004-02-26
WO2006129773A12006-12-07
Foreign References:
JP2011256120A2011-12-22
JP2008056725A2008-03-13
JPS5841832U1983-03-19
JPS6251633U1987-03-31
JPH0374341U1991-07-25
JPH04368391A1992-12-21
JPH0873388A1996-03-19
Other References:
A. ZAMBELLI ET AL., MACROMOLECULES, vol. 6, 1973, pages 925
See also references of EP 3623393A4
Attorney, Agent or Firm:
ASHITABA INTERNATIONAL PATENT OFFICE (JP)
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