Process for the continuous preparation of thermoplastically...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...

Reexamination Certificate

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Details

C264S176100, C264S211240, C264S328100, C264S328170, C366S279000, C366S348000, C528S080000, C528S085000

Reexamination Certificate

active

06930163

ABSTRACT:
Process for the continuous preparation of thermoplastically processable polyurethane elastomers with improved softening properties is disclosed. The process is carried out in a tubular reactor at a ratio of the circumferential speed of the stirrer (in m/sec) in the tubular reactor and the throughput (in g/sec) of >0.03 m/g.

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Kunststoffe 68 1978, pp. 819-825, Goyert et al, Thomplastische Polyurethan-Elastomere-Eigenschaften und Anwendungen.

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