Ziegler-natta catalyst composition with controlled morphology
Catalyst Systems, processes of forming the same and polymers and polymerization processes are described herein. The process of forming the catalyst system generally includes providing a first compound including a magnesium dialkoxide and aluminum alkoxide: contacting the first compound with a first agent and a second agent to form a solution of reaction product “A”, the first agent including a titanating agent and the second agent including a first metal halide; contacting the solution of reaction product “A” with a third agent to form a solid reaction product “B”, the third agent including a second metal halide: contacting the solid reaction product “B” with a fourth agent to form a solid reaction product “C”, the fourth agent including a third metal halide: optionally contacting the solid reaction product “C” with a fifth agent to form a solid reaction product “D”, the fifth agent including a fourth metal halide; and contacting the solid reaction product “C” or “D” with a sixth agent to form a catalyst component, the sixth agent including a first organoaluminum compound.
1. A process of forming a catalyst system comprising:
reacting a hexane solution having 2-ethyl hexanol with a hexane solution comprising butyl ethyl magnesium (BEM) and triethyl aluminum (TEAl), wherein a TEAl to BEM molar ratio is about 0.5:1 to form a first compound comprising a non-reducing magnesium-aluminum alkoxide;
contacting the first compound with a first agent and a second agent in the presence of an inert hydrocarbon solvent to form a solution of reaction product “A”, the first agent consisting of titanium isopropoxide (Ti(O i Pr) 4 ) and the second agent comprising a first metal halide;
contacting the solution of reaction product “A” with a second metal halide to form a solid reaction product “B”;
washing the solid reaction product “B” with hexane;
contacting the solid reaction product “B” with a fourth agent to form a solid reaction product “C”, the fourth agent comprising a third metal halide, wherein the fourth agent contacts solid reaction product “B” in a molar equivalent of about 0.1;
optionally contacting the solid reaction product “C” with a fifth agent to form a solid reaction product “D”, the fifth agent comprising a fourth metal halide; and
contacting the solid reaction product “C” or “D” with a sixth agent to form a catalyst component, the sixth agent comprising a first organoaluminum compound, wherein the catalyst system is formed in the absence of ClTi(O i Pr) 3 and in the absence of a blend comprising TiCl 4 /titanium n-butoxide.
2. The process of claim 1 , wherein the first agent contacts the first compound in a molar equivalent of from 0.5 to 0.75.
3. The process of claim 1 , wherein the second agent contacts the first compound in a molar equivalent of from about 0.1 to about 5.
4. The process of claim 1 , wherein the second agent, the second metal halide, the fourth agent and the fifth agent are each titanium tetrachloride (TiCl 4 ).
5. The process of claim 1 , wherein the sixth agent comprises an organoaluminum compound selected from triethyl aluminum, trimethyl aluminum, triisobutyl aluminum or combinations thereof.
6. The process of claim 1 , wherein the inert hydrocarbon solvent is an aliphatic hydrocarbon or an aromatic hydrocarbon.
7. The process of claim 1 , wherein the inert hydrocarbon solvent is hexane, heptane, octane, decane, toluene, xylene, dichloromethane, chloroform, 1-chlorobutane or combinations thereof.
8. The process of claim 1 , wherein contact of the first compound with the second agent occurs in the presence of the first agent.
9. The process of claim 1 , wherein the second agent contacts the first compound before contact with the first agent.
10. A process of forming a catalyst system comprising:
reacting a hexane solution having 2-ethyl hexanol with a hexane solution comprising butyl ethyl magnesium (BEM) and triethyl aluminum (TEAl), wherein a TEAl to BEM molar ratio is about 0.5:1 to form a first compound comprising a non-reducing magnesium-aluminum alkoxide;
contacting the first compound with a first agent and a second agent in the presence of an inert hydrocarbon solvent to form a solution of reaction product “A”, the first agent comprising a titanating agent and the second agent comprising a first metal halide;
contacting the solution of reaction product “A” with a second metal halide to form a solid reaction product “B”;
washing the solid reaction product “B” with hexane;
contacting the solid reaction product “B” with a fourth agent to form a solid reaction product “C”, the fourth agent comprising a third metal halide, wherein the fourth agent contacts solid reaction product “B” in a molar equivalent of about 0.1;
contacting the solid reaction product “C” with a fifth agent to form a solid reaction product “D”, the fifth agent comprising a fourth metal halide, wherein the fifth agent contacts solid reaction product “C” in a molar equivalent of about 0.1; and
contacting the solid reaction product “D” with a sixth agent to form a catalyst component, the sixth agent comprising a first organoaluminum compound, wherein the catalyst system is formed in the absence of absence of ClTi(OiPr) 3 and in the absence of a blend comprising TiCl 4 /titanium n-butoxide.