Propylene-based copolymer material, film made therefrom, and method for producing propylene-based copolymer material
A propylene-based and copolymer technology, applied in the field of propylene-based copolymer materials and films made of them, can solve problems such as poor blocking resistance
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Embodiment 1
[0066] (Preparation and preactivation of solid catalyst)
[0067] 1.5 liters of completely dehydrated and degassed n-hexane, 37.5 mmol of triethylaluminum and 3.75 mmol of cyclohexylethyldimethoxysilane were added to 15 g of magnesium-containing, Titanium and halogen solid catalyst components. Then, preactivation was performed by continuously feeding 15 g of propylene while maintaining the temperature in the reactor in the range of 5 to 15°C.
[0068] (Preparation of propylene-based copolymer material)
[0069] Polymerization is carried out using two sequentially connected polymerization reactors.
[0070]In a 20-liter polymerization reactor made of SUS as the first reactor, by continuously adding 45 mmol / hour of triethylaluminum, 12 mmol / hour of cyclohexylethyldimethoxysilane and 0.86 g / hour of The preactivated solid catalyst component was continuously polymerized while supplying 50 kg / hour of liquid propylene, 7 kg / hour of 1-butene and 60 liters / hour of hydrogen to mainta...
Embodiment 2 to 4
[0077] In the compositions given in Table 1, each propylene-based copolymer material containing the propylene-based copolymer component (1) and the propylene-based copolymer component (2) was obtained by changing the first step in the preparation of the propylene-based copolymer material in Example 1. The amount of propylene, ethylene, 1-butene and hydrogen in the first reactor and the second reactor was prepared. All polymeric materials contained not more than 1% by weight of coarse particles; they had good particle properties. In the same manner as in Example 1, a film was prepared from the obtained polymer material.
[0078] [reference example]
[0079] (Preparation and preactivation of solid catalyst)
[0080] 1.5 liters of completely dehydrated and degassed n-hexane, 37.5 mmol of triethylaluminum and 1.88 mmol of cyclohexylethyldimethoxysilane were added to 15 g of magnesium-containing, Titanium and halogen solid catalyst components. Then, preactivation was performed ...
Embodiment 5
[0089] Use 7.3 parts by weight of polymers containing 95.4% by weight of propylene content, 1.0% by weight of ethylene content, and 3.6% by weight of 1-butene content (melting point is 148 ° C, intrinsic viscosity is 1.6dl / g, use and implementation The same catalyst preparation as Example 1), and 92.7 parts by weight of the propylene-based copolymer of the reference example, as the propylene-based copolymerization component (1) and the propylene-based copolymerization component (2). The density of 3.5 parts by weight is 960kg / m 3 and an ethylene homopolymer (trade name: G1900, produced by Keiyo Polyethylene Co., Ltd.) with an MFR of 16 g / 10 minutes, 0.10 parts by weight of tetrakis[3-(3,5-di-tert-butyl-4-hydroxy Phenyl) propionic acid] pentaerythritol ester (trade name: IRGANOX1010), 0.15 parts by weight of phosphorus-based antioxidant-tris (2,4-di-tert-butylphenyl) phosphite (trade name: IRGAFOS168) and 0.35 parts by weight Synthetic zeolite (trade name: SILTON JC-40, manufa...
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