IMPROVEMENT OF CRYSTALLIZATION RATE AND CRYSTALLIZATION TEMPERATURE TO GIVE SYNDIOTATIC POLYPROPYLENE SPP WITH IMPROVED TC, AND PRODUCT THEREFROM, AND INCREASE OF CELL II STRUCTURE CONTENT IN SPP TO INCREASE QUANTITY OF CELL II STRUCTURE CONTAINED IN SPP, AND PRODUCT THEREFROM

摘要

PROBLEM TO BE SOLVED: To provide a method of improving crystallization rate and crystallization temperature to give a syndiotactic polypropylene, sPP, with improved Tc, and a product therefrom, and a method of increasing a cell II structure content in the sPP to increase the quantity of the cell II structure contained in the sPP, and a product therefrom. ;SOLUTION: In this method, crystallization rate and crystalline temperature of a syndiotactic polypropylene is raised by adding at least one selected from among a polytetrafluoroethylene, 2,2-methylene-bis-(4,6,di-t-butylphenyl)sodium phosphate, pimelic acid, and calcium pimelate to the syndiotactic polypropylene, A composition is obtained using this method and a product is manufactured therefrom.;COPYRIGHT: (C)1999,JPO