Densification of polypyrrolidone

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

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Details

260 296R, 264118, 264142, 264176F, 260 292N, 528502, C08G 2016

Patent

active

041305213

ABSTRACT:
Moisture-containing nylon-4 powder is treated under heat and pressure to produce a solid material of bulk density suitable for melt-spinning.

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patent: 3804813 (1974-04-01), Takamiya et al.
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patent: 3988401 (1976-10-01), Kasting et al.

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