Process for producing olefin polymers and catalyst used therein
AssigneeSumitomo Chemical Company, Limited
InventorsToshio Sasaki, Takeshi Ebara, Hiroyuki Kora, Kiyoshi Kawai, Mituharu Yamasaki, Syozo Kawamata
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Abstract
A solid catalyst component for .alpha.-olefin polymerization containing as catalyst components at least titanium, magnesium and chlorine which are impregnated into an organic porous polymer carrier having a mean particle diameter of 5 to 1,000 .mu.m and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 .ANG., a catalyst system comprising at least said solid catalyst component (A) and an organoaluminum compound (B), as well as a process for producing .alpha.-olefin polymers using said catalyst system.
Claims18
A solid catalyst component for .alpha.-olefin polymerization comprising a trivalent titanium compound obtained by reducing a titanium compound represented by the formula Ti(OR.sup.1).sub.n X.sub.4-n (wherein R.sup.1 is a hydrocarbon group of 1 to 20 carbon atoms, X is a halogen atom;
- and n is a number satisfying 0<n.ltoreq.4) with an organomagnesium compound in the presence of an organic porous polymer carrier having a mean particle diameter of 5 to 1000 .mu.m and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 .ANG., or in the co-presence of said organic porous polymer carrier and an organo silicone compound having Si-O bonds, of the formula:
- Si(OR.sup.3).sub.m R.sup.4.sub.4-m,
- R.sup.5 (R.sup.6.sub.2 SiO).sub.p SiR.sup.7.sub.3p
- or
- (R.sup.8 SiO).sub.q
- (wherein R.sup.3 is a hydrocarbon group having 1 to 20 carbon atoms;
- R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are each a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom;
- m is a number satisfying 0<m.ltoreq.4;
- p is an integer of 1 to 1,000;
- and q is an integer of 2 to 1,000) to obtain a solid product, treating the solid product with a mono- or polycarboxylic acid ester, and a mixture of a dialkyl ether and titanium tetrachloride.
A solid catalyst component for .alpha.-olefin polymerization comprising a trivalent titanium compound obtained by reducing a titanium compound represented by the general formula Ti(OR.sup.1).sub.n X.sub.4-n (wherein R.sup.1 is a hydrocarbon group of 1 to 20 carbon atoms, X is a halogen atom;
- and n is a number satisfying 0<n.ltoreq.4) with an organomagnesium compound in the presence of an organic porous polymer carrier having a mean particle diameter of 5 to 1000 .mu.m and a pore volume ob 0.1 ml/g or above at a pore radium of 100 to 5,000 .ANG., or in the copresence of said organic porous polymer carrier and an organo silicone compound having Si-O bonds, of the formula:
- Si(OR.sup.3).sub.m R.sup.4.sub.4-m,
- R.sup.5 (R.sup.6.sub.2 SiO).sub.p SiR.sup.7.sub.3
- or
- (R.sup.8 SiO).sub.q
- (wherein R.sup.3 is a hydrocarbon group having 1 to 20 carbon atoms;
- R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are each a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom;
- m is a number satisfying 0<m.ltoreq.4, p is an integer of 1 to 1,000;
- and q is an integer of 2 to 1,000) to obtain a solid product, treating the solid product with a mixture of a dialkyl ether and titanium tetrachloride.
A catalyst system for a .alpha.-olefin polymerization comprising:
- (A) a solid catalyst component for .alpha.-olefin polymerization comprising a trivalent titanium compound obtained by reducing a titanium compound represented by the formula Ti(OR.sup.1).sub.n X.sub.4-n (wherein R.sup.1 is a hydrocarbon group of 1 to 20 carbon atoms, X is a halogen atom;
- and n is number satisfying 0<n.ltoreq.4) with an organomagnesium compound in the presence of an organic porous polymer carrier having a mean particle diameter of 5 to 1,000 .mu.m and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 .ANG., or in the co-presence of said organic porous polymer carrier and an organo silicone compound having Si-O bonds, of the formula:
- Si(OR.sup.3).sub.m R.sup.4.sub.4-m,
- R.sup.5 (R.sup.6.sub.2 SiO).sub.p SiR.sup.7.sub.3
- or
- (R.sup.8.sub.2 SiO).sub.q
- (wherein R.sup.3 is a hydrocarbon group having 1 to 20 carbon atoms;
- R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are each a hydrocarbon group having 1 to 20 carbon atoms or hydrogen atom;
- m is a number satisfying 0<m.ltoreq.4, p is an integer of 1 to 1,000;
- and q is an integer of 2 to 1,000) to obtain a solid product, treating the solid product with a mono- or polycarboxylic acid ester, and a mixture of a dialkyl ether and titanium tetrachloride, and
- (B) an organoaluminum compound.
Dependencies are inferred from the claim text.