Industrial application of NA-II catalyst in production of speciality BOPP resin

The authors studied performances of the speciality resins for biaxially oriented polypropylene (BOPP) produced in a gas phase polypropylene plant with NA-II catalyst and imported catalyst respectively, and further compared the speciality resin with high speed BOPP resin F280S. The results confirm that the BOPP resin synthesized with NA-II catalyst has the physical properties conformed to the requirements of the top grade product and is superior to its counterparts prepared with the imported catalyst in haze value and flexural modulus. The relative molecular mass and its distribution of the speciality resin are equivalent to those of its counterpart prepared with imported catalyst but obviously different from those of F280S.