Carry type non-metallocene calalyst for polymerization of olefine, its preparation method and uses

An olefin polymerization, non-metallocene technology, applied in the field of heterogeneous catalysts, can solve the problems of low catalyst polymerization activity, uneconomical industrial production and high ash content

Active Publication Date: 2007-05-16
SINOPEC YANGZI PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under low loading conditions, the polymerization activity of the catalyst is low, and the ash content in the polymer is high, which requires deashing treatment, which is uneconomical in industrial production

Method used

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  • Carry type non-metallocene calalyst for polymerization of olefine, its preparation method and uses
  • Carry type non-metallocene calalyst for polymerization of olefine, its preparation method and uses
  • Carry type non-metallocene calalyst for polymerization of olefine, its preparation method and uses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] The carrier adopts porous silica, the model is ES757 (product of Ineos Company), and the silica is heated at 600 ° C under N 2 Continuous roasting under atmosphere for 4h, and then stored under nitrogen.

[0135] 0.75g will have the formula The non-metallocene olefin polymerization catalyst is dissolved in 7.75ml tetrahydrofuran solvent, and 5g of silicon dioxide after adding activation (the pore volume is 1.55ml / g, and the solvent consumption is 100% of the carrier pore volume), after stirring under airtight normal temperature conditions Drain directly to obtain a supported non-metallocene olefin polymerization catalyst. The catalyst is designated CAT-1.

[0136] The Ti content in the supported non-metallocene olefin polymerization catalyst is 1.04%.

Embodiment 1-A

[0138] Ethylene homopolymerization: 27.4mg CAT-1, 2.7ml cocatalyst triethylaluminum (TEAL) hexane solution (concentration: 0.88mol / L) and 1L solvent hexane were added simultaneously in a 2L autoclave, and the stirring speed was 250rpm, feed ethylene until the total polymerization pressure is 0.8MPa, carry out homopolymerization of ethylene at 80°C, the reaction time is 2 hours, stop feeding ethylene after 2 hours, vent the pressure in the reactor, stop stirring, and then cool down to 25°C to obtain Polymerization product.

[0139] The concentration of CAT-1 in the catalytic system is 0.0274 g / liter of solvent, and the concentration of cocatalyst is 0.27 g / liter of solvent.

Embodiment 1-B

[0141] Homopolymerization of ethylene in the presence of hydrogen:

[0142] Essentially the same as Example 1-A, but with the following changes:

[0143] Before feeding ethylene, first feed hydrogen to the reactor to 0.2MPa, and then feed ethylene until the total pressure of the reactor is 0.8MPa.

[0144] The concentration of CAT-1 in the catalytic system is 0.030 g / liter of solvent, and the concentration of cocatalyst is 0.29 g / liter of solvent.

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Abstract

The invention discloses an equivoluminal dipping loading method of non-metallocene olefin polymeric catalyst as well as application of copolymerizing course within two or more different olefins, which comprises the following steps: dissolving non-metallocene olefin polymeric catalyst in the solvent; mixing solution and carrier; stirring wet solid material evenly; drying; obtaining the load-typed non-metallocene olefin polymeric catalyst; making the solvent and carrier satisfy specific relationship.

Description

technical field [0001] The invention belongs to the technical field of heterogeneous catalysts, in particular, the invention relates to a method for carrying out non-metallocene olefin polymerization catalyst support by an equal-volume impregnation method, and the supported non-metallocene olefin prepared by the method polymerization catalyst. The invention also relates to the application of the supported non-metallocene olefin polymerization catalyst in catalyzing olefin polymerization and copolymerization between two or more different olefins. Background technique [0002] The non-metallocene olefin polymerization catalysts that appeared in the middle and late 1990s, also known as post-metallocene catalysts, the central atom of the main catalyst includes almost all transition metal elements, following Ziegler, Ziegler-Natta and metallocene olefin polymerization catalysts The fourth generation of olefin polymerization catalysts, this type of catalyst has reached or even su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/12C08F2/04
Inventor 戴厚良尤侯平李传峰姚小利周立进马忠林王亚明李晓强柏基业
Owner SINOPEC YANGZI PETROCHEM
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