Heterophasic propylene copolymers
A technology of polypropylene composition and propylene, which is applied in the field of oligomers and can solve problems such as odor and fogging
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[0062] The preparation of the solid catalyst component can be carried out according to several methods.
[0063] According to one approach, it can be achieved by making the formula Ti(OR) q-y X y The titanium compound (where q is the valence of titanium and y is a number between 1 and q, preferably TiCl 4 ) and derived from the formula MgCl 2 • The reaction of an adduct of pROH with magnesium chloride (wherein p is a number from 0.1 to 6, preferably 2 to 3.5, and R is a hydrocarbyl group having 1-18 carbon atoms) to prepare a solid catalyst component. The adduct can suitably be prepared in spherical form by mixing the alcohol and magnesium chloride with stirring at the melting temperature of the adduct (100-130°C). The adduct is then mixed with an inert hydrocarbon immiscible with the adduct to form an emulsion, which is rapidly quenched, resulting in solidification of the adduct in the form of spherical particles. Examples of spherical adducts prepared according to this p...
Embodiment 1 and 2
[0116] Procedure for preparing spherical adducts
[0117] Microspherical MgCl was prepared according to the method described in Comparative Example 5 of WO98 / 44009 2 ·pC 2 H 5 OH adduct, with the difference that BiCl in powder form has been added prior to the oil feed 3 , 3 mol% with respect to the amount of magnesium.
[0118] Procedure for the preparation of solid catalyst components
[0119] Introduce 300 ml of TiCl into a 500 ml round bottom flask equipped with a mechanical stirrer, cooler and thermometer at room temperature under nitrogen atmosphere 4 . After cooling to 0°C, diisobutyl phthalate and 9.0 g of spherical adduct (prepared as described above) were added sequentially to the flask with stirring. The feeding amount of the internal donor should satisfy the Mg / donor molar ratio of 8. The temperature was raised to 100°C and held for 2 hours. After that, stirring was stopped, the solid product was allowed to settle, and the supernatant was siphoned off at...
Embodiment 6
[0142] Procedure for preparing spherical adducts
[0143] Microspherical MgCl was prepared according to the method described in Comparative Example 5 of WO98 / 44009 2 ·pC 2 H 5 OH adduct, with the difference that BiCl in powder form has been added prior to the oil feed 3 , 3 mol% with respect to the amount of magnesium.
[0144] Procedure for the preparation of solid catalyst components
[0145]Introduce 300 ml of TiCl into a 500 ml round bottom flask equipped with a mechanical stirrer, cooler and thermometer at room temperature under nitrogen atmosphere 4 . After cooling to 0°C, 9.0 g of spherical adduct (prepared as described above) was added with stirring, followed by the addition of diethyl 3,3-dipropylglutarate to the flask in sequence. The addition amount of the internal donor should satisfy the Mg / donor molar ratio of 13. The temperature was raised to 100°C and held for 2 hours. After that, stirring was stopped, the solid product was allowed to settle, and th...
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