Reduction of residual monomer in polycaprolactam melts - by addn. of materials which evolve gas during vacuum treatment

Production of polycaprolactam metals with reduced monomer content is by adding materials which splitt off gases to the melt before evacuation. Monomer content is reduced without the need for higher temps. or longer times, which increase formation of monomer, or for higher vacuum which increases dime...

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Hauptverfasser:	HITZLER,FRITZ,DR, ESSIG,KARL-AUGUST,DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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