Load type catalyst for olefinic polymerization and method for producing the same

A supported catalyst, olefin polymerization technology, applied in the production of bulk chemicals, etc., can solve the problem of narrow molecular mass distribution of polypropylene

Active Publication Date: 2008-06-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relative molecular weight distribution of polypropylene prepared by the catalytic system containing diether electron donors is relatively narrow

Method used

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  • Load type catalyst for olefinic polymerization and method for producing the same
  • Load type catalyst for olefinic polymerization and method for producing the same
  • Load type catalyst for olefinic polymerization and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1 Synthesis of bicyclo[2,2,1]-2,3-α,β ethyl succinate

[0084] In 150 mL of dichloromethane, add 1.17 g of maleic anhydride, 5.00 g of norbornene, and 0.58 g of benzophenone, and irradiate with ultraviolet light for 12 hours while stirring. After removing the solvent, add 30mL ethanol, 3mL H 2 SO 4 , heated to reflux at 100°C for 4 hours. After removing the solvent, extract with 3×50 mL ether, wash with saturated sodium bicarbonate solution, and dry over anhydrous magnesium sulfate. After removing ether, distill under reduced pressure at 104°C (10 mmHg) to obtain 1.51 g of ethyl bicyclo[2,2,1]-2,3-α,β-succinate as a colorless liquid.

[0085] through 1 H NMR (CDCl 3 , 300MHz) Analysis result: δ1.07(m, 3H, CH 2 ); δ1.30(t, 3H, CH 3 ); δ1.50(m, 5H, CH 2 , CH); δ2.18(d, 2H, CH); δ3.38(m, 2H, CH); δ4.24(q, 2H, CH 2 ).

Embodiment 2

[0086] Example 2 Synthesis of bicyclo[2,2,1]-2,3-alpha,beta methyl succinate

[0087] Except that methanol was used instead of ethanol in the synthesis, all the other steps were the same as in Example 1. At 102°C (10mmHg), 1.38g of methyl bicyclo[2,2,1]-2,3-α,βsuccinate was obtained as a colorless liquid.

[0088] through 1 H NMR (CDCl 3 , 300MHz) analysis results: δ1.30-1.60 (m, 8H, 2CH, 6CH 2 ); δ1.73(q, 1H, CH); δ2.04(q, 1H, CH); δ3.10(t, 1H, CH); δ3.67(s, 3H, CH 3 ).

Embodiment 3

[0089] Example 3 Synthesis of diethyl bicyclo[2,2,1]-2,3-alpha,beta succinate

[0090] In 150 mL of dichloromethane, add 1.17 g of maleic anhydride, 5.00 g of norbornene, and 0.58 g of benzophenone, and irradiate with ultraviolet light for 12 hours while stirring. After the solvent was removed, 30 mL of ethanol and 0.1 g of p-toluenesulfonic acid were added, and heated to reflux at 100° C. for 48 hours. After removing the solvent, extract with 3×50 mL ether, wash with saturated sodium bicarbonate solution, and dry over anhydrous magnesium sulfate. After filtering to remove the ether, 1.67 g of diethyl dicyclo[2,2,1]-2,3-α,β-succinate was obtained as colorless viscous bicyclo[2,2,1]-2,3-α,β.

[0091] through 1 H NMR (CDCl 3 , 300MHz) analysis results: δ1.30-1.55 (m, 12H, 6CH 2 , 6CH 3 ); δ2.04(m, 2H, CH); δ3.14(m, 2H, CH); δ4.12(m, 4H, CH 2 ).

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Abstract

The invention relates to a supported catalyst of olefin polymer, which uses 1, 4-dialkyl compound with two cyclic structures in molecular skeleton as internal electron donor compound, to obtain large spatial volume, while the inventive supported catalyst has high catalytic activity for catalyzing propone polymerization. While assisted with promoter and external electron donor, and the product polypropylene has high stereoregularity. The invention further discloses a preparation method of supported catalyst.

Description

technical field [0001] The invention relates to a supported catalyst for olefin polymers and a preparation method thereof, in particular to a supported Ziegler-Natta catalyst for propylene polymerization and a preparation method thereof. Background technique [0002] Polypropylene is one of the fastest growing polyolefin materials, and its output is second only to polyethylene in the world. 1954 Natta invented TICl 3 / AIR 3 Polypropylene Ziegler-Natta (Z-N) catalyst, but at that time the catalyst orientation ability was low and the activity was very low. By the mid-to-late 1960s, some Lewis bases (called internal electron donors) were mixed into titanium trichloride crystals by mechanical grinding or chemical methods, which greatly increased the surface area of ​​the catalyst, and the obtained polypropylene isotacticity also Reach 90-96%. People have gradually found that the electron donor introduced in the catalyst plays a key role in improving the performance of the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/645C08F4/649C08F4/02
CPCY02P20/52
Inventor 冀棉王霞董金勇朱博超韦少义贾军纪赵晓东陈雪蓉王雄姚培洪张长军郝萍廖智锋李斌王海白虹
Owner PETROCHINA CO LTD
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