Ester compound
AssigneeMitsui Chemicals, Inc.
InventorsTakaaki YANO, Wataru YAMADA, Shotaro TAKANO, Takashi KIMURA, Makoto ISOGAI, Takashi NAKANO, Sunil Krzysztof MOORTHI
Life of this patent
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Abstract
[Problem] To provide an internal donor component capable of producing, with high productivity, a propylene polymer having extremely high stereoregularity when used mainly as a solid titanium catalyst component. [Solution] A polyol ester compound having a specific polycyclic structure represented by formula (1). This ester compound is characterized in that sites including a C-R3 structure and a C-R4 structure satisfy a specific relationship.
Claims4
A cyclic multiple-ester-group-containing compound (A) represented by the following formula (1):
- wherein m and n are each independently an integer of 1 to 5, with a relationship of m+n≥4 being satisfied;
- R1 and R2 are each independently a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms;
- a plurality of R3, a plurality of R4, and R5 to R8 are each independently a group selected from a hydrogen atom, a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms, or a halogen atom;
- a hydrogen atom, a carbon atom, or both, of R1 to R8 are optionally replaced by at least one atom selected from the group consisting of a nitrogen atom, an oxygen atom, a phosphorus atom, a halogen atom, and a silicon atom;
- while R3 to R8 are in a mutually independent relationship, adjacent R3 groups are optionally directly bonded to one another to form a multiple bond;
- adjacent R4 groups are optionally directly bonded to one another to form a multiple bond;
- and a plurality of R3 bonded to the same carbon, and a plurality of R4 bonded to the same carbon, are optionally bonded to one another to form a cyclic structure.
Dependencies are inferred from the claim text.