CATALYST COMPONENT FOR OLEFIN POLYMERIZATION AND APPLICATION THEREOF
申请人:Beijing Lihe Technology Ltd.
公开号:US20170283530A1
公开(公告)日:2017-10-05
Provided is a solid catalyst component for olefin polymerization, which comprises Mg, Ti, a halogen and an electron donor. The electron donor is selected from at least one of ring-substituted ether-acid ester compounds of the general formula (I). Also provided are a catalyst containing the solid catalyst component and the application of the catalyst in reactions of olefin polymerization, particularly in the reaction of propylene polymerization.
Catalyst component for olefin polymerization and application thereof
申请人:Beijing Lihe Technology Ltd.
公开号:US10208146B2
公开(公告)日:2019-02-19
Provided is a solid catalyst component for olefin polymerization, which comprises Mg, Ti, a halogen and an electron donor. The electron donor is selected from at least one of ring-substituted ether-acid ester compounds of the general formula (I). Also provided are a catalyst containing the solid catalyst component and the application of the catalyst in reactions of olefin polymerization, particularly in the reaction of propylene polymerization.
OLEFIN POLYMERIZATION CATALYST CARRIER, SOLID CATALYST COMPONENT AND USE THEREOF
申请人:Renqiu Lihe Technology Ltd.
公开号:US20170355792A1
公开(公告)日:2017-12-14
Provided is an olefin polymerization catalyst carrier with a general structure formula of Mg(OR
I
)
n
(OR
II
)
2-n
, wherein: 0≦n≦2, and R
I
and R
II
can be the same or different and are each independently selected from a C
1
-C
20
hydrocarbon group. In the X-ray diffraction pattern of the catalyst carrier, there are a set of diffraction peaks in the range of a 2θ diffraction angle of 5°-15°, and the set of diffraction peaks contain 1-4 main diffraction peaks. Also disclosed is an olefin polymerization solid catalyst component which is prepared from the carrier Mg(OR
I
)
n
(OR
II
)
2-n
, a titanium compound, and at least one electron donor compound. In addition, also disclosed is an olefin polymerization catalyst containing the solid catalyst component, at least one organic aluminum compound, and optionally, an external electron donor compound.
Tetrahydropyridinium bromide: Useful synthon to functionalized pyrrolidines
1‐benzyl‐5‐(ethoxycarbonyl)‐2,3,4,5‐tetrahydropyridinium bromide undergoes ring contraction with a series of nucleophiles, getting 2,2‐disubstitued pyrrolidines. Moreover, from some of the new 2,2‐disubstitued pyrrolidines were synthesized spiro‐pyrrolidines. J. Heterocyclic Chem.,(2011).