Basell Poliolefine Italia S.r.l.

Basell Poliolefine Italia, S.p.a.

Yuri Gulevich

Giampiero Morini

Giulio Balbontin

Gianni Vitale

Ilya Nifant'ev

Antonio Cristofori

Giansiro Prini

Remco Kelder

Marco Fachini

Maria Fusto

Jan Dirk Van Loon

The present invention relates to a solid catalyst component for the polymerization of olefins CH&#x2550;CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from y-butyrolactone derivatives of a particular formula. Said catalyst components, when used in the polymerization of olefins and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

Components and catalysts for the polymerization of olefins

The present invention relates to a solid catalyst component for the polymerization of olefins CH&#x2550;CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from &#x3b2;-keto-ester derivatives of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

Components and catalysis for the polymerization of olefins

A process for the preparation of an monoalkylidene substituted 1,4-dions derivatives of formula (Ia) or (Ib) or a mixture of (Ia) and (Ib): wherein: R, Rand R, equal to or different from each other, are hydrogen atoms or C-Chydrocarbon groups: Tand T, equal to or different from each other, are OR. R, NR, SRor PR; or Tand Tcan be fused in an oxygen atom or a NRgroup; said process comprises the step of reacting a compound of formula (II), with a compound of formula (IIIa) or (IIIb), in the presence of at least one equivalent with respect to the compound of formula (IIIa) or (IIIb) of a salts of a base or a neutral base at a temperature higher than 70&#xb0; C. 

Process for preparing alkylidene-substituted-1, 4-dions derivatives

A process for the preparation of a monoalkylidene substituted 1,4-dions derivatives of formula (Ia) or (Ib) or a mixture of (Ia) and (Ib): wherein: R, Rand R, equal to or different from each other, are hydrogen atoms or C&#x2013;Chydrocarbon groups: Tand T, equal to or different from each other, are OR, R, NR, SRor PR; or Tand Tcan be fused in an oxygen atom or a NRgroup; said process comprises the step of reacting a compound of formula (II) with a compound of formula (IIIa) or (IIIb) in the presence of at least one equivalent with respect to the compound of formula (IIIa) or (IIIb) of a carbonate of metal M or of a compound of formula MTsuch as KCOor KHCO 

Process for preparing alkylidene-substituted-1,4-dions derivatives

The present invention relates to a solid catalyst component for the polymerization of olefins CH&#x2550;CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from thiophene dicarboxylate derivatives of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

The present invention relates to a solid catalyst component for the polymerization of olefins CH&#x2550;CHR in which R is hydrogen or a hydrocarbon radical with 1&#x2013;12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from maleates of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

A process for the preparation of alkylidene substituted succinates comprising a step (a) in which is carried out the reaction of a carbonilic compound, a succinic and a base in a reaction medium and a step (b) in which the alkylidene substituted product obtained in (a) is esterified, characterized in that the succinic ester is used in a molar amount substantially equal to, or lower than, the amount of compound carbonilic compound, (ii) the base is used in a molar amount substantially equal to the succinic ester and is selected from metal hydrides and metal and alkoxides, and (iii) the reaction medium comprises an aprotic liquid medium or a protic liquid medium having a Ka, measured in water, lower than that of iPrOH.

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Ferrara, Italy

Yuri Gulevich