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Procatalyst composition with substituted amide ester internal electron donor

A technology of procatalyst and composition, applied in the field of procatalyst composition, to achieve the effect of high isotacticity

Active Publication Date: 2013-03-13
WR GRACE & CO CONN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of olefin-based polymers with broad MWD by Ziegler-Natta catalysts is generally limited to single reactor processes requiring tight process control and / or series reactor processes requiring multiple reactors

Method used

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  • Procatalyst composition with substituted amide ester internal electron donor
  • Procatalyst composition with substituted amide ester internal electron donor
  • Procatalyst composition with substituted amide ester internal electron donor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0165] 1. Synthesis of substituted amide esters

[0166]Ethyl 2-cyano-2-isobutyl-4-methylvalerate and ethyl 2-cyano-2-isopropyl-3-methylbutanoate:

[0167]

[0168] A 500-ml round bottom flask was equipped with a magnetic stirrer and charged with ethyl 2-cyanoacetate (11.3 g, 0.1 mol) and dry DMF (120 ml). To this stirred solution was added 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) (30.4 g, 0.2 mol, 1.0 equiv) in dry DMF (40 ml) dropwise The solution. After the addition was complete, the mixture was stirred for another hour. The flask was refrigerated in an ice-water bath and a solution of iodide (0.2 mol, 1.0 equiv) in DMF (40 ml) was added dropwise. The mixture was warmed to room temperature and stirred for an additional 14 hours until all starting material was converted to product (monitored by GC). The mixture was poured into ice water and extracted with diethyl ether. The combined ether extracts were washed with water and brine and dried over magnesium sulfate. Af...

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Abstract

Disclosed are procatalyst compositions having an internal electron donor which includes a substituted amide ester and optionally an electron donor component. Ziegler- Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and / or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.

Description

Background technique [0001] The present disclosure relates to procatalyst compositions containing substituted amide esters, methods of incorporating the procatalyst compositions within the catalyst compositions, and methods of using the catalyst compositions to make olefin-based polymers, and by The resulting olefin-based polymer produced by this process. [0002] Worldwide demand for olefin-based polymers continues to grow as the applications for these polymers become more diverse and more complex. Olefin-based polymers with broad molecular weight distribution (MWD) have increased applications, for example, in thermoforming; pipe molding, foam molding, blow molding; and films. Ziegler-Natta catalyst compositions for producing olefin-based polymers, especially propylene-based polymers, with broad MWD are known. Ziegler-Natta catalyst compositions typically include a procatalyst comprising a transition metal halide (ie, titanium, chromium, vanadium) supported on a metallic or...

Claims

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Application Information

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IPC IPC(8): C08F10/06C08F4/651
CPCC08F110/06C08F10/06C08F2410/06C08F4/651C08F4/654C08F2500/12C08F2500/18C08F2500/04C07C233/02C07C233/12B01J27/24B01J31/02C07C233/69C08F4/6545C08F10/00
Inventor 陈林枫T.W.梁陶涛高宽强
Owner WR GRACE & CO CONN
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