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ATACTIC PP [1 record]

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Record 1 2007-11-19

English

Subject field(s)
  • Plastics Manufacturing
CONT

Atactic polypropylene is produced by slurry-polymerizing propylene with the aid of a Ziegler-Natta catalyst system wherein the carrier is a chlorinated organic magnesium compound.

CONT

But sometimes we use atactic polypropylene. Atactic means that the methyl groups are placed randomly on both sides of the chain ...

French

Domaine(s)
  • Plasturgie
CONT

On sait faire, avec les catalyseurs classiques (Ziegler-Natta), des polypropylènes dont les groupes méthyle sont répartis au hasard de chaque côté de la chaîne (PP atactique), ou tous du même côté PP isotactique). Mais il est plus difficile d'obtenir la variante dans laquelle les groupes sont disposés alternativement d'un côté et de l'autre (PP syndiotactique).

Spanish

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