Components and catalysts for the (co)polymerization of olefins

Details Components and catalysts for the (co)polymerization of olefins Components and catalysts for the (co)polymerization of olefins

2005-01-11

2005-01-11

Choi, Ling-Siu (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S348000, C526S124200, C526S123100, C526S142000, C502S127000, C502S103000, C502S115000

Reexamination Certificate

active

06841632

ABSTRACT:
Solid catalyst components comprising Ti,Mg, halogen and internal electron-donor compound selected from the 1,3-diethers of formula (I) in which R is a C1-C10alkyl group, R1is a linear or branched primary alkyl radical having at least three carbon atoms, optionally containing a heteroatom, and R2is a secondary alkyl or cycloalkyl radicals different from i-propyl, optionally containing a heteroatom. The catalysts obtained by using as internal electron-donor compound the said 1,3-diethers display in the (co)polymerization of olefins an excellent balance of activity and stereospecificity that cannot be reached with the ethers known in the art.

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