	US 12,240,925 B2
	Process for preparing solid catalyst components for olefin polymerization
Vladimir P. Marin, Pasadena, TX (US); and Ahmed Hintolay, Pasadena, TX (US)
Assigned to W. R. Grace & Co.- Conn., Columbia, MD (US)
Filed by W. R. Grace & Co.-Conn., Columbia, MD (US)
Filed on May 25, 2022, as Appl. No. 17/824,418.
Application 17/824,418 is a continuation of application No. 16/762,331, granted, now 11,634,520, previously published as PCT/US2018/059311, filed on Nov. 6, 2018.
Claims priority of provisional application 62/585,137, filed on Nov. 13, 2017.
Prior Publication US 2022/0289881 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 10/02 (2006.01); C07C 69/78 (2006.01); C08F 4/52 (2006.01); C08F 4/64 (2006.01); C08F 110/06 (2006.01); C08F 210/06 (2006.01); C08F 210/16 (2006.01); C08L 23/16 (2006.01); B01J 31/02 (2006.01); B01J 31/36 (2006.01); C08F 4/618 (2006.01); C08F 4/649 (2006.01); C08F 4/654 (2006.01); C08F 4/656 (2006.01)

CPC C08F 210/06 (2013.01) [C07C 69/78 (2013.01); C08F 10/02 (2013.01); C08F 110/06 (2013.01); C08F 210/16 (2013.01); C08L 23/16 (2013.01); B01J 31/0258 (2013.01); B01J 31/36 (2013.01); C08F 4/6183 (2013.01); C08F 4/6186 (2013.01); C08F 4/6497 (2013.01); C08F 4/6543 (2013.01); C08F 4/656 (2013.01); C08F 4/6565 (2013.01); C08F 2410/03 (2013.01); C08F 2500/12 (2013.01); C08F 2500/18 (2013.01); C08F 2500/24 (2013.01); C08F 2800/20 (2013.01); C08L 2207/02 (2013.01)]

19 Claims

1. A process of preparing a solid catalyst component for olefin polymerization, the process comprising:

dissolving a halide-containing magnesium compound in a mixture comprising an epoxy compound, an organic phosphorus compound, and a hydrocarbon solvent to form a homogenous solution;

treating the homogenous solution with a first titanium compound in the presence of a supportive electron donor to form a solid precipitate;

treating the solid precipitate with a second titanium compound, optionally in the presence of a non-phthalate electron donor, to form the solid catalyst component;

wherein:

the process is free of carboxylic acids and anhydrides;

the first titanium compound and the second titanium compound are independently represented by:

Ti(OR)_gX_4-g;

each R is independently a C₁-C₄alkyl;

X is Br, Cl, or I;

g is 0, 1, 2, or 3;

the supportive donor comprises an ether, a succinate, a monoaryl ester, a polycarboxylic acid ester, a polyhydroxy ester, a heterocyclic polycarboxylic acid ester, a polyhydroxy ester, a heterocyclic polycarboxylic acid ester, an acrylate, an inorganic acid ester, an alicyclic polycarboxylic acid ester, or a hydroxy-substituted carboxylic acid ester compound having 2 to 30 carbon atoms; and

the catalyst component comprises particles having a granular, or a substantially spherical or a spherical shape and exhibiting a D₅₀from about 3 μm to about 150 μm.