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Supported non-metallocene single site catalyst component and preparation method thereof and use

An active center, non-single-free technology, which is applied in the field of components of non-single-cene active center catalysts, can solve the problems of increasing fine powder, inability to adapt to industrial equipment, affecting the distribution of polymer particles, etc.

Active Publication Date: 2009-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the morphology of the obtained catalyst particles is not ideally controlled, which eventually affects the distribution of polymer particles and increases the fine powder, which cannot be adapted to existing industrial devices.

Method used

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  • Supported non-metallocene single site catalyst component and preparation method thereof and use
  • Supported non-metallocene single site catalyst component and preparation method thereof and use
  • Supported non-metallocene single site catalyst component and preparation method thereof and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] 1) Preparation of magnesium chloride / silica gel carrier

[0073] Under the protection of nitrogen, in a glass reactor, add 0.50 g of anhydrous magnesium chloride at room temperature, then add 350 ml of dried tetrahydrofuran, start stirring, 13.2 g of silica gel (GRACE 955, under nitrogen, roast at 150 ° C for 2.5 hours, heat up to 300°C for 2 hours, then at 600°C for 5 hours) into the reactor, heated to 65°C, stirred and dissolved for 2 hours, then evaporated at 80°C to remove the solvent to obtain a white solid powder. The white solid powder was vacuum-dried at 100°C for 2 hours, and then vacuum-dried at 300°C for 10 hours to obtain a solid powder with good fluidity. According to gas chromatography analysis, no tetrahydrofuran was detected.

[0074] 2), preparation of alkylaluminoxane / magnesium chloride / silica gel carrier

[0075] Under the protection of nitrogen, take 5.13 grams of the above-mentioned magnesium chloride / silica gel carrier and add it to a glass reacto...

Embodiment 2

[0085] 1), preparation of alkylaluminoxane / silica gel carrier

[0086] Same as in Example 1 1)

[0087] 2), preparation of alkylaluminoxane / magnesium chloride / silica gel carrier

[0088] With embodiment 1 in 2)

[0089] 3) Preparation of supported non-cene catalyst B

[0090] Under nitrogen protection, 4.23 grams of the above-mentioned prepared alkylaluminoxane / magnesium chloride / silica gel carrier were added in a glass reactor, 50 milliliters of dried toluene was added to make a slurry, and 0.364 grams of ( L2) 3 Zr 2 Cl 4 (Its structure is as follows, see Chinese patent application 200410086388.8 for synthesis) solution was added dropwise into the reactor, reacted at 30° C. for 30 minutes, then washed with 50 ml of toluene, and dried in vacuum to obtain supported non-cene catalyst B. Characterized by ICP, in catalyst B, the weight content of Mg is 1.15%, the weight content of Zr is 0.43%, and the weight content of Al is 13.28%.

[0091]

Embodiment 3

[0093] 1) Preparation of magnesium chloride / silica gel carrier

[0094] Under nitrogen protection, in a glass reactor, add 14.4 grams of anhydrous magnesium chloride at room temperature, then add 400 milliliters of tetrahydrofuran after drying, after starting to stir, 22.0 grams of silica gel (Cabot company CAB-O- TS-610, average particle size 0.2-0.3 microns, dried at 50°C for 4 hours) was added into the reactor, heated to 65°C, stirred and dissolved for 5 hours, and then solid powder was prepared using a closed spray dryer. The particle size of solid powder is D 50 19 microns.

[0095] The solid powder was vacuum-dried at 100° C. for 2 hours, and then vacuum-dried at 300° C. for 10 hours to obtain a solid powder with good fluidity. Through gas chromatography analysis, no tetrahydrofuran was detected.

[0096] 2), preparation of alkylaluminoxane / magnesium chloride / silica gel carrier

[0097] Under the protection of nitrogen, take 7.10 grams of the magnesium chloride / silic...

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Abstract

The invention discloses a loading non-metallocene single active central catalyst composition which is obtained through adopting an alkyl aluminoxane / magnesium chloride / silica gel carrier as a carrier and loading a non-metallocene single active central transition metal composition and a preparation method thereof. The catalyst system consisting of the catalyst composition catalyzes ethylene to polymerize or copolymerize and has high polymerization activity. The carrier is simple to prepare; the prepared loading catalyst granule has good shape and adjustable size; and the obtained polythene powdery material has high stacking density.

Description

technical field [0001] The invention relates to a component of a supported non-cenene single active center catalyst, its preparation method, and its application in olefin polymerization. Background technique [0002] During the development of olefin polymerization catalysts, the non-monocene single-site catalysts developed in the 1990s have received great development and attention. In particular, the Group IV transition metal complexes (EP 0874005, WO 0155231) containing phenoxy-imine ligands have high catalytic olefin polymerization activity, and can obtain functionalized polyolefin resins with good application prospects. However, olefin polymerization is carried out in a homogeneous phase, and the obtained polymer is in an amorphous state, which cannot be used in the widely used slurry method or gas phase polymerization process. [0003] At present, there are a lot of research reports on the support of single-site catalysts, among which SiO 2 As the carrier, the most re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F4/02C08F4/42
Inventor 刘东兵廖浩瀚邢文辉周俊领王丽莎黄廷杰杜宗友
Owner CHINA PETROLEUM & CHEM CORP
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