Method for evaluating injection physical property of plastic resin, and polyethylene resin suitable for injection molding
A technology of polyethylene resin and plastic resin, which is applied in the direction of DC flow characteristic measurement, investigation phase/state change, etc., can solve the problems of inability to inject plastic resin, and there is no method for predicting the applicability of injection pressure injection molding, saving time and money economic effect
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Embodiment 1
[0253] Synthesis Example 1: Synthesis of the first metallocene compound
[0254] 1-1. Preparation of ligand compound.
[0255] Add 2.331 g (10 mmol) of indenoindole into a dry 250 mL Schlenk flask, and inject 40 mL of diethyl ether under argon. The ether solution was cooled to 0° C., and then 4.8 mL (12 mmol) of 2.5 M nBuLi hexane solution was slowly added dropwise thereto. The reaction mixture was slowly warmed to room temperature, then stirred until the next day. In another 250 mL Schlenk bottle, 20 mL of diethyl ether was charged, and then 3.6 mL (30 mmol) of dichloromethyl(tert-butoxyhexyl)silane was injected. The flask was cooled to -78°C and filled with the lithiated solution of indenoindole through cannula. After the injection was complete, the mixture was slowly warmed to room temperature, then stirred for about 5 hours, and then stirred for one day. Then, the flask was quenched by adding 50 ml of water, the organic layer was separated, and washed with MgSO 4 dry....
Embodiment 2
[0263] Synthesis Example 2: Synthesis of the second metallocene compound
[0264] 2-1. Preparation of Ligand Compounds
[0265] Add 10.8 g (100 mmol) of chlorobutanol into a dry 250 mL Schlenk bottle, add 10 g of molecular sieves and 100 mL of MTBE, and then slowly add 20 g of sulfuric acid within 30 minutes. The reaction mixture slowly turned pink over time. After 16 hours, it was poured into saturated sodium bicarbonate solution cooled in an ice bath. Diethyl ether (100 mL x 4) was added to the mixture and extracted several times. The collected organic layer was washed with MgSO 4 dry. After filtration, the solvent was removed under vacuum and reduced pressure. Thus, 10 g of 1-(tert-butoxy)-4-chlorobutane was obtained in the form of a yellow liquid (yield: 60%).
[0266] 1 H NMR (500MHz, CDCl 3 ):1.16(9H,s),1.67~1.76(2H,m),1.86~1.90(2H,m),1.94(1H,m),3.36(2H,m),3.44(1H,m),3.57( 3H,m)
[0267] Add 4.5 g (25 mmol) of 1-(tert-butoxy)-4-chlorobutane synthesized above in...
preparation Embodiment 1
[0273] Preparation Example 1: Preparation of Supported Catalyst
[0274]To a 300 mL glass reactor was added 50 mL of toluene solution, 10 g of dry silica (SP2410, manufactured by Grace Davison) was added thereto, followed by stirring while raising the reactor temperature to 40°C. 60 mL of a 10 wt% methylaluminoxane (MAO) / toluene solution was added thereto. After raising the temperature to 60°C, the mixture was stirred at 200 rpm for 12 hours. After the temperature of the reactor was lowered to 40° C., stirring was stopped and settling was performed for 10 minutes, and then the reaction solution was decanted. 100 mL of toluene was added thereto again and stirred for 10 minutes. Stirring was stopped and settling was carried out for 10 minutes, then the toluene solution was decanted.
[0275] 50 mL of toluene was added to the reactor, 0.50 g of the metallocene compound of Synthesis Example 1 as a high molecular weight catalyst precursor and 10 mL of toluene were added to the r...
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