Resumen
[0001] The present invention relates to diimino compounds defined by following formulae: <img class="EMIRef" id="586109604-ia01" /> wherein n is 0 or 1; m is 1, 2 or 3; each R1 , equal to or different from each other, is selected from the group consisting of: hydrogen, a monovalent aliphatic or aromatic hydrocarbon group, optionally containing heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; with the proviso that al least one R<1> group is represented by the formula R<5>OSi(R)<3>; wherein each R is independently selected from the group consisting of: C<1>-C<20> alkyl, C<3>-C<20> cycloalkyl, C<6>-C<20> aryl, C<2>-C<20> alkenyl, C<7>-C<20> arylalkyl, C<7>-C<20> alkylaryl, C<8>-C<20> arylalkenyl, C<8>-C<20> alkenylaryl, linear or branched; preferably it is methyl, ethyl or propyl; each R5 , equal to or different from each other, is a divalent aliphatic or aromatic hydrocarbon group containing from 1 to 20 carbon atoms, optionally containing from 1 to 5 heteroatoms of groups 14, 15 or 16 of the periodic table of the elements and/or boron; each R2 , equal to or different from each other, is a radical which contains from 1 to 20 carbon atoms; this group optionally contains heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; R3 is a divalent aliphatic or aromatic hydrocarbon group containing from 1 to 20 carbon atoms, optionally containing from 1 to 5 heteroatoms of groups 14, 15 and 16 of the periodic table of the elements and/or boron; R4 , equal to or different from each other, is hydrogen or a radical which contains from 1 to 20 carbon atoms; this group optionally contains heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; [0002] This invention also relates to a process to prepare compounds represented by formula I or II above. Likewise this invention relates to a catalyst component comprising the product of the combination of the diimino ligand and a porous inorganic support. [0003] Further this invention also relates to the use of the catalyst component in combination with a cocatalyst to polymerize olefins.
Reivindicaciones
1. Diimino compounds represented by the following formulae: <img class="EMIRef" id="586109606-ib0062" /> wherein n is 0 or 1; m is 1, 2 or 3; each R1 , equal to or different from each other, is selected from the group consisting of: hydrogen, a monovalent aliphatic or aromatic hydrocarbon group, optionally containing heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; with the proviso that at least one R<1> group is represented by the formula R<5>OSi(R)<3>; wherein each R, equal to or different from each other, is selected from the group consisting of: C<1>-C<20> alkyl, C<3>-C<20> cycloalkyl, C<6>-C<20> aryl, C<2>-C<20> alkenyl, C<7>-C<20> arylalkyl, C<7>-C<20> alkylaryl, C<8>-C<20> arylalkenyl, C<8>-C<20> alkenylaryl, linear or branched; each R5 , equal to or different from each other, is a divalent aliphatic or aromatic hydrocarbon group containing from 1 to 20 carbon atoms, optionally containing from 1 to 5 heteroatoms of groups 14 to 16 of the periodic table of the elements and/or boron; each R2 , equal to or different from each other, is a radical which contains from 1 to 20 carbon atoms; this group optionally contains heteroatoms of group 14 to 16 of the periodic table of the elements and boron; R3 is a divalent aliphatic or aromatic hydrocarbon group containing from 1 to 20 carbon atoms, optionally containing from 1 to 5 heteroatoms of groups 14, 15 and 16 of the periodic table of the elements and/or boron; each R4 , equal to or different from each other, is hydrogen or a radical which contains from 1 to 20 carbon atoms; this group optionally contains heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; two or more R1 , R2 , R3 , R4 and R5 can also unite to form a 4 to 15-membered aliphatic or aromatic ring; the ring optionally contains heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron. 2. Diimino compounds according to claim 1,wherein R<5> is represented by the formula CR<6>2 (R<7>)<a>CR<6>2 wherein each R6 , equal to or different from each other, is selected from the group consisting of: hydrogen or R; two R<6> can also unite to form a ring; R7 is selected from the group consisting of: O, NR, S, SiR<6>2 , C<1>-C<20> alkylidene, C<3>-C<20> cycloalkylidene, C<2>-C<20> alkenylidene, C<6>-C<20> arylidene, C<7>-C<20> alkylarylidene, C<7>-C<20> arylalkylidene, C<8>-C<20> arylalkenylidene, C<8>-C<20> alkenylarylidene, optionally containing heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; a is 0 or 1. 3. Diimino compounds according to claim 2, wherein the group CR<6>2 (R<7>)<a>CR<6>2 OSi(R)<3> is selected from the group consisting of: -CH<2>-CH<2>-OSiMe<3>, CH<2>-(CH<2>)<p>-CH<2>-OSiMe<3> wherein p ranges from 1 to 10, -CH<2>-O-CH<2>-OSiMe<3>, CH<2>-C<6>H<4>-CH<2>-OSiMe<3>, CH(Et)-CH<2>-OSi(Et)<2>Me, -CH<2>-CH<2>-O-CH<2>OSi(iPr)<3>, CH<2>-Si(CH<3>)<2>-CH<2>-CH<2>OSi(iPr)<3>, -CH<2>-CH<2>-Si(CH<3>)<2>-CH<2>OSi(iPr)<3>, CH<2>-CH<2>-CH<2>-N(CH<3>)-CH<2>-CH<2>-CH<2>OSi(iPr)<3>, -C(Me)<2>-CH<2>-C<6>H<4>-CH<2>-CH<2>-OSi(C<5>H<11>)<3>,-CH<2>-CH<2>-C<6>H<4>-O-CH<2>-CH<2>-OSi(CH<2>Ph)<3>, -C(CH<3>)<2>-C(CH<3>)<2>-OSi(C<6>H<4>Me)<3> and CH(Me)-CH(Me)-OSi(Et)(Me)<2>. 4. Diimino compounds according to claims 1-3, wherein: each R1 is independently selected from the group consisting of: hydrogen; C<1>-C<20> alkyl; C<3>-C<20> cycloalkyl; C<6>-C<20> aryl; C<2>-C<20> alkenyl; C<7>-C<20> arylalkyl; C<7>-C<20> alkylaryl; C<8>-C<20> arylalkenyl; C<8>-C<20> alkenylaryl; linear or branched, optionally substituted by BR<6>2 , OR<6>, SiR<6>3 , NR<6>2 ; or R<5>OSi(R)<3>; each R2 is independently selected from the group consisting of: C<1>-C<20> alkyl, C<3>-C<20> cycloalkyl, C<6>-C<20> aryl, C<2>-C<20> alkenyl, C<7>-C<20> arylalkyl, C<7>-C<20> alkylaryl, C<8>-C<20> arylalkenyl, C<8>-C<20> alkenylaryl, linear or branched, optionally substituted by BR<6>2 , OR<6>, SiR<6>3 , NR<6>2; each R3 is independently selected from the group consisting of: (CR<6>2 )<s> wherein s is 1 or 2, and compounds of formula: <img class="EMIRef" id="586109606-ib0063" /> wherein T is boron, nitrogen or phosphorus; U is boron, oxygen, nitrogen, sulphur or phosphorus; each R4 is independently selected from the group consisting of: hydrogen, C<1>-C<20> alkyl, C<3>-C<20> cycloalkyl, C<6>-C<20> aryl, C<2>-C<20> alkenyl, C<7>-C<20> arylalkyl, C<7>-C<20> alkylaryl, C<8>-C<20> arylalkenyl, C<8>-C<20> alkenylaryl, optionally substituted by BR<6>2 , OR<6>, SiR<6>3 , or NR<6>2 . 5. Diimino compounds according to claims 1-4 represented by the following formulae: <img class="EMIRef" id="586109606-ib0064" /> <img class="EMIRef" id="586109606-ib0065" /> <img class="EMIRef" id="586109606-ib0066" /> 6. Process for the preparation of diimino compounds according to claims 2-5, comprising the following steps a) reacting a compound of formulae III or IV <img class="EMIRef" id="586109606-ib0067" /> with a Bronsted base selected from the group consisting of: organolithium compounds, organosodium compounds, organopotassium compounds, organomagnesium compounds, sodium hydride, potassium hydride, lithium, sodium, or potassium; and b) contacting the obtained metallated compound with one equivalent of a compound of formula Y(R<7>)<a>CR<6>2 OSi(R)<3> wherein: each Z is independently selected from the group consisting of: R<1> and CR<6>2 H, provided that at least one Z is represented by the formula CR<6>2 H, wherein each R1 , equal to or different from each other, is selected from the group consisting of: hydrogen, a monovalent aliphatic or aromatic hydrocarbon group, optionally containing heteroatoms of group 14 to 16 of the periodic table of the elements and/or boron; R, R2, R3, R4, R6, R7, a, m, and n are as above defined; Y is a leaving group. 7. Process for the preparation of a diimino ligand according to claim 6, wherein the Bronsted base is selected from the group consisting of lithium alkyl, sodium alkyl, potassium alkyl; and Y is halogen. 8. Solid catalyst component for polymerizing olefins obtainable by a process comprising the following steps: a) reacting a diimino ligand according to claims 1-5, with a porous inorganic support; b) treating the reaction mixture with a compound of general formula L<q>MX<2>, wherein M is selected from the group 8, 9 and 10 of the periodic table, X, equal to or different from each other, is selected from a group consisting of: halogen, hydrogen, OR, N(R)<2>, C<1>-C<20> alkyl or C<6>-C<20> aryl; two X taken together can also be an aromatic or aliphatic divalent ligand, containing two equal or different donor atoms belonging to the group 14-16 of the periodic table of the elements; L is a labile ligand and q is 0, 1 or 2. 9. Solid catalyst component according to claim 8, wherein the porous inorganic solid is selected from the group consisting of: silica, alumina, silica-alumina, aluminum phosphates and mixtures thereof. 10. Solid catalyst component according to claims 8-9, wherein the porous inorganic solid is calcined silica. 11. Polymerization catalyst comprising the catalyst component according to claims 8-10, and a cocatalyst. 12. Polymerization catalyst according to claim 11, characterized in that the cocatalyst is selected from a group consisting of: aluminoxanes, alkylaluminiums, boron compounds, or mixtures thereof.
