Catalyst for olefin polymerization or copolymerization at high temperature

A technology for olefin polymerization and copolymerization, which is applied in the field of catalysts and can solve the problems of complex catalyst preparation and poor control.
CN1887918AInactive Publication Date: 2007-01-03CHINA PETROLEUM & CHEM CORP +1
2 Cites 37 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2007-01-03
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The catalyst for olefin polymerization or copolymerization at high temperature consists of three components, including component A, component B and component C. The component A is solid prepared through dissolving magnesium chloride in organic epoxy compound or organic phosphorus compound to form solution, mixing the solution with titanium tetrahalide and separating assistant to separate soli, and treating with electron donor and titanium tetrahalide. The component B is mixture of aluminoxane and alkyl aluminum compound. The component C is organic silane. At polymerization temperature higher than 90 deg.c, the catalyst has high stereo selectivity and high activity.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The present invention relates to a catalyst for olefin polymerization or copolymerization, its preparation method and application in olefin polymerization. Background technique:

[0002] At present, the propylene polymerization catalysts supporting titanium tetrachloride with magnesium chloride all adopt aluminum alkyl (Et 3 Al, etc.) are co-catalysts, and the propylene polymerization temperature is usually 65-80°C, which can obtain high activity and isotacticity, but increasing the polymerization temperature will lead to a sharp decrease in activity and isotacticity.

[0003] The polymerization reaction of propylene will release a lot of heat. In industry, people have been hoping to increase the temperature of the polymerization reaction. One is to make the reaction heat easy to remove, and the other is to improve the reactivity; these can improve the efficiency of the reactor. In addition, when the polymerization temperature is higher, a polymer wi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More