Verfahren zur Polymerisation von Laurinlactam

Laurolactam is partially polymerized at 200-340 DEG C. and autogenous pressure in the presence of 10-300 mole per cent of water, the water is removed and the polymerization continued at 270-340 DEG C. Before polymerization the reactants may be freed of oxygen. 0.05-2 mole per cent of a chain termina...

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Bibliographic Details
Main Authors HANS WILHELM,DR, JOACHIM KUNDE,DR, HELMUT DOERFEL,DR, HORST METZGER,DR
Format Patent
LanguageGerman
Published 13.02.1969
Subjects
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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Summary:Laurolactam is partially polymerized at 200-340 DEG C. and autogenous pressure in the presence of 10-300 mole per cent of water, the water is removed and the polymerization continued at 270-340 DEG C. Before polymerization the reactants may be freed of oxygen. 0.05-2 mole per cent of a chain terminator, e.g. acetic, propionic, butyric, benzoic or stearic acid or dodecylamine, may be added before or during polymerization. Other additives may be fillers, fibres, pigments and dyes. Both polymerization stages may be conducted under an inert atmosphere. The pressure of the first may be up to 73 atmospheres; that of the second atmospherics sub- or super-atmospheric. The water may be removed by releasing the pressure and heating. The products may be extruded as fibres directly from the bottom of the pressure vessel. They may be injection moulded, extruded, or fluidized bed coated to produce rods, gears, pipe, film, sheeting bristles or fibres.
Bibliography:Application Number: DE19641495199