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Halogenated amide ester and internal electron donor with same

A technology of halogenated amide ester and halogen, which is applied in the field of halogenated amide ester to achieve the effect of high molecular weight distribution

Active Publication Date: 2013-06-05
WR GRACE & CO CONN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Halogenated amide ester and internal electron donor with same
  • Halogenated amide ester and internal electron donor with same
  • Halogenated amide ester and internal electron donor with same

Examples

Experimental program
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Effect test

Embodiment

[0162] 1. Synthesis of Halogenated Amide Esters

[0163] Ethyl 2-cyano-2-isobutyl-4-methylpentanoate and ethyl 2-cyano-2-isopropyl-3-methylbutanoate:

[0164]

[0165] 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 anhydrous DMF (120 ml). To the stirred solution was added dropwise a solution of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) (30.4 g, 0.2 mol, 1.0 equiv) in dry DMF (40 ml). After the addition was complete, the mixture was stirred for another hour. The flask was cooled 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, dried over magnesium sulfate. A...

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Abstract

Disclosed are halogenated amide esters that are suitable as internal electron donors in procatalyst compositions. 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 halogenated amide esters, and procatalyst compositions and catalyst compositions comprising the same. [0002] As the applications of olefin-based polymers become more diverse and more complex, the world demand for these polymers continues to grow. Olefin-based polymers with broad molecular weight distribution (MWD) find increasing applications, for example, in thermoforming; pipe molding, foam molding, blow molding; and films. Ziegler-Natta catalyst compositions are known for the preparation of olefin-based polymers, especially propylene-based polymers, having a broad MWD. Ziegler-Natta catalyst compositions typically include a procatalyst consisting of a transition metal halide (i.e. titanium, chromium, vanadium) supported on a metal or metalloid compound such as magnesium chloride or silica, together with a cocatalyst such as Complexation of organoaluminum compounds. However, the production of olefin-based pol...

Claims

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Application Information

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IPC IPC(8): C08F10/06C08F4/651
CPCC08F110/06C08F10/06C08F4/651C08F4/654C08F4/6465C08F4/6494C08F4/6495C08F4/6497C08F2500/12C08F2500/18C08F2500/04C07C233/02C07C233/12C07C233/69
Inventor X.黄陈林枫T.W.梁陶涛高宽强
Owner WR GRACE & CO CONN
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