Preparation of impact-resistant polystyrene

Details Preparation of impact-resistant polystyrene Preparation of impact-resistant polystyrene

1997-07-01

1999-11-23

Warzel, Mark L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 54, 525 88, 525 89, 525314, 525315, 525316, 525250, C08F27900, C08L 5302

Patent

active

059902361

ABSTRACT:
Abstract of the disclosure: A process is described for the continuous preparation of an impact-resistant molding material by anionic polymerization of styrene or another aromatic vinyl compound or mixtures thereof in the presence of a solvent and a block rubber, wherein the polymerization is carried out in at least 2 reaction vessels that together form a reactor cascade, the monomer stream being subdivided among the reaction vessels present, the living polymer chain ends being terminated in a conventional manner and the solvent being removed.

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patent: 4421895 (1983-12-01), Echte et al.
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