Производство полипропилена катализом по Циглеру–Натта

Универсальный пластик для современного производства

Petrochemical & Refining Global Industrial Scale $95 billion

Обзор

Polypropylene (PP) is the second most produced plastic globally, valued for its excellent chemical resistance, low density, and versatile mechanical properties. Production uses highly stereospecific Ziegler-Natta catalysts (4th generation MgCl₂-supported TiCl₄) or metallocene catalysts to control the tacticity (isotactic, syndiotactic, or atactic) of the polymer chain. PP is used in packaging, textiles, automotive components, medical devices, and currency notes.

Химический процесс

Propylene is polymerized in gas-phase fluidized bed or bulk liquid-phase loop reactors at 60-80 degrees C and 25-35 bar using MgCl₂/TiCl₄/electron donor catalyst with AlEt₃ co-catalyst. The process achieves >98% isotacticity without the need for atactic polymer removal. Reactor powder is stabilized, compounded, and pelletized.

nCH₂=CH(CH₃) →[TiCl₄/MgCl₂, AlEt₃] −(CH₂−CH(CH₃))ₙ− (isotactic addition polymerization)

Сырьё

  • Propylene (C₃H₆) — Steam cracking co-product or propane dehydrogenation (Monomer)
  • 4th-gen Ziegler-Natta catalyst — Catalyst manufacturers (e.g., LyondellBasell, Grace) (Stereospecific catalyst)
  • Triethylaluminum (AlEt₃) — Chemical synthesis (Co-catalyst/activator)

Конечные продукты

  • Polypropylene resin (pellets) — Packaging, automotive, textiles, medical (Homopolymer, random copolymer, and impact copolymer grades)
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Environmental Impact

PP production relies on fossil propylene feedstock. However, PP is one of the most recyclable thermoplastics and has the lowest density of commodity plastics, reducing transportation energy. End-of-life PP can be mechanically recycled or chemically recycled back to propylene.

Соображения безопасности

Последние инновации

Metallocene catalysts enable production of PP with uniform molecular weight distribution and novel architectures.
Post-consumer recycled PP is being upgraded using reactive extrusion and advanced stabilization packages.

Масштаб производства

80000000

тонн/год

$95 billion

Рыночная стоимость

Больше в Petrochemical & Refining

Каталитический риформинг для получения высокооктанового бензина

Global Industrial Scale

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Global Industrial Scale

Полимеризация полиэтилена

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Commercial Production

Фракционная перегонка нефти

Global Industrial Scale

Frequently Asked Questions

What industry uses Производство полипропилена катализом по Циглеру–Натта?
Производство полипропилена катализом по Циглеру–Натта is used in the petrochemical & refining sector at global industrial scale scale.
What process is involved in Производство полипропилена катализом по Циглеру–Натта?
Propylene is polymerized in gas-phase fluidized bed or bulk liquid-phase loop reactors at 60-80 degrees C and 25-35 bar using MgCl₂/TiCl₄/electron donor catalyst with AlEt₃ co-catalyst. The process achieves >98% isotacticity without the need for atactic polymer removal. Reactor powder is stabilized,
What is the economic significance of Производство полипропилена катализом по Циглеру–Натта?
Производство полипропилена катализом по Циглеру–Натта has a market value of $95 billion and annual production of 80,000,000 tons.
What is the environmental impact of Производство полипропилена катализом по Циглеру–Натта?
PP production relies on fossil propylene feedstock. However, PP is one of the most recyclable thermoplastics and has the lowest density of commodity plastics, reducing transportation energy. End-of-life PP can be mechanically recycled or chemically recycled back to propylene.
What raw materials are used in Производство полипропилена катализом по Циглеру–Натта?
The main raw materials include: Propylene (C₃H₆), 4th-gen Ziegler-Natta catalyst, Triethylaluminum (AlEt₃).