Regulation of the isotacticity of polypropylene

2009-08-20View Original

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My device has recently shown fluctuations in isotropy, despite no changes in the raw materials or the three types of additives. I would like to know which factors might be having a significant impact

Reply #22009-08-20

Have the properties of DDS changed? Is there any fluctuation in hydrogen purity?

Reply #32009-08-23

None at all. DDS is a batch number; the raw materials are the same as well. It’s not a general situation but applies only to individual reactors

Reply #42009-09-02

1. Removal of CO and H2O: 3A molecular sieves have poor water absorption capacity and thus need to be regenerated; poor S.AS conditions can also have an impact. 2. The temperature in the D201 (pre-contact tank) affects the internal electron donors, while the rotation speed of A201 influences the crystal structure

Reply #52009-09-04

Changes in raw materials Changes in activity

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Regulation of the isotacticity of polypropylene

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