| abstract |
The present inventions provides that the propylene1-butene random copolymer is performance by the properties of softness, impact resistance, heat resistance and low heat seal, polypropylene composition having the said copolymer, the shift, film, elongating film and complex film is consisted of the said composition, wherein the propylene1-butene random copolymer has propylene unit of 60-90% mole, 1-butene unit of 10~405 mole, the triadisotacticity is 85%~97.5%, the distribution of the molecular weight ranges from the 1 to 3, intrinsic viscosity is 0.1~12 d1/g, melting point Tm is 40~120 DEG C, the Tm and 1-butene is satisfied with the formula below: 146 exp (-0.022M) ≥ Tm ≥ 125 exp (-0.032M) Furthermore, the present invention provides the transition metal compound which is useful to be catalyst component for olefinic polymerized, the catalyst for olefinic polymerization having the said transition metal compound. The metal transition compound is presented as the formula (2a): , (in the formula, R1,R3 are hydrogen,R2,R4 are selected from the carboxyl, silica-containing group, R5~R13 are selected from hydrogen, carboxyl, silica-containing group, the contigyous groups of R5~R12 is form the linking cycle each other, R14 is aryl,R13 and R14 form the linking cycle each other, M is the fourth group transition metal, Y is carbon,Q is halogen etc., j is the integral number of 1~4). |