Method for preparing homo-polypropylene resin with relatively wide molecular weight distribution
A technology of wide molecular weight distribution and homopolymerization polypropylene, which is applied in the field of preparing homopolymer polypropylene resin with wide molecular weight distribution, and achieves the effects of high modulus, excellent physical properties and processing properties, and controllable polymer performance indicators.
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Embodiment 1
[0018] In the single-loop polypropylene unit of LBI’s Spheripol process, a new type of wide molecular weight distribution catalyst NDQ (NDQ catalyst is provided by Sinopec Catalyst Beijing Aoda Branch) is used to produce average molecular weight distribution (Mw / Mn=4.0~5.5). The polypropylene base resin has a melt index of 10-15g / 10min, and a homopolypropylene resin is produced by adding a high-efficiency additive system. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution homopolypropylene resin raw material is 100 parts, the auxiliary additive antioxidant 1010 0.06 part, the auxiliary additive antioxidant 168 0.03 part, the auxiliary additive calcium stearate 0.03 part, the auxiliary additive The additive GMS (glyceryl monostearate) 0.09 parts, 0.21 parts in total, was added to a high-speed mixer and mixed thoroughly, first mixed at a speed of 750r / min for 1 minute, then mixed at a speed of 1500r / min for 30 seconds, and ...
Embodiment 2
[0020] In the single-loop polypropylene unit of LBI company Spheripol process, wide molecular weight distribution catalyst NDQ is used to produce homopolymer polypropylene resin with wide molecular weight distribution (Mw / Mn=4.0-5.5), and the melt index is 11-12g / 10min , and then a homopolymerized polypropylene resin is produced by adding a high-efficiency additive system. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution homopolypropylene resin raw material is 100 parts, the auxiliary additive antioxidant 1010 0.06 part, the auxiliary additive antioxidant 168 0.03 part, the auxiliary additive calcium stearate 0.06 part, the auxiliary additive The additive GMS (glyceryl monostearate) 0.11 parts, 0.26 parts in total, was added to a high-speed mixer and mixed thoroughly, first mixed at a speed of 450r / min for 1 minute, then mixed at a speed of 1200r / min for 30 seconds, and then added to the twin-screw The granulation is c...
Embodiment 3
[0022] In the single-loop polypropylene unit of LBI company Spheripol process, wide molecular weight distribution catalyst NDQ is used to produce homopolymer polypropylene resin with wide molecular weight distribution (Mw / Mn=4.0-5.5), and the melt index is 12-13g / 10min , and then a homopolymerized polypropylene resin is produced by adding a high-efficiency additive system. The high-efficiency additive system is expressed in parts by weight. The wide molecular weight distribution homopolypropylene resin raw material is 100 parts, the auxiliary additive antioxidant 1010 0.06 part, the auxiliary additive antioxidant 168 0.03 part, the auxiliary additive calcium stearate 0.06 part, the auxiliary additive The additive GMS (glyceryl monostearate) 0.09 parts, 0.24 parts in total, was added to a high-speed mixer and mixed thoroughly, first mixed at a speed of 550r / min for 1 minute, then mixed at a speed of 1300r / min for 30 seconds, and then added to the twin-screw Granulation is carri...
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