Main > POLYMERS > Poly(Amide) > Powder > Precipitated Powder

Product DE. H.

PATENT ASSIGNEE'S COUNTRY Germany
UPDATE 08.99
PATENT ASSIGNEE Huels (Marl)
PATENT CLAIMS Prepn process of powder of narrow particle size distribution & low porosity
- Dissolving polyamide in MeOH or EtOH under pressure
- Lowering T in a first stage until nucleation takes place with
out precipitation
- Lowering the T further in second stage until supersaturation
results
- Precipitating polyamide powder
- Drying suspension
PATENT PHOTOCOPY Available on request

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