Process for improving bulk density with multi-contact procatalyst and product

Process for improving bulk density with multi-contact procatalyst and product

  • CN 103,502,280 A
  • Filed: 02/29/2012
  • Published: 01/08/2014
  • Est. Priority Date: 03/01/2011
  • Status: Active Application
First Claim
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1. the preparation method of a raw catalyst composition comprises:

  • Thereby raw catalyst precursor and halogenating agent being carried out under the existence of the internal electron donor that is selected from substituted phenylene aromatic diester, component, alkoxy alkyl and combination thereof based on benzoic ether to first contacts and forms the raw catalyst intermediate;

    This raw catalyst intermediate and halogenating agent are carried out to second under the existence of the internal electron donor that is selected from substituted phenylene aromatic diester, component, alkoxy alkyl and combination thereof based on benzoic ether and contact, at least one in described contact procedure occurs under substituted phenylene aromatic series dibenzoate exists;

    WithForm many contact raw catalyst compositions.

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