| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention refers to crystalline propylene polymers with high stereoregularity, specifically high content of isotactic pentalogies, improved processability in molten state and to production method. Propylene polymer is produced with the following properties: isotactic pentalogies content, measured by nuclear magnetic resonance (NMR), is higher than 98%, chain-length distribution expressed by ratio is from 6 to 11, and value of ratio is equal or lower than 5.5. Specified polymer is produced with special combination of solid components of Zigler-Natt catalyst and highstereoregular electron-donor compounds. Film or plate is made of propylene polymers having said properties. Sandwiched laminated product comprises specified film or plate. Films and plate are characterized by good homogeneous thickness, as well as high ultimate elongation and high ultimate tensile strength. ^ EFFECT: propylene polymers are more easily recycled. ^ 9 cl, 4 tbl, 8 ex |
