VERFAHREN ZUR HERSTELLUNG EMISSIONSARMER EINGEFÄRBTER POLYOXYMETHYLEN-FORMMASSEN UND DEREN VERWENDUNG

VERFAHREN ZUR HERSTELLUNG EMISSIONSARMER EINGEFÄRBTER POLYOXYMETHYLEN-FORMMASSEN UND DEREN VERWENDUNG

Colored molding compositions made from polyacetal copolymer, where the polyacetal copolymer essentially consists of oxymethylene units and oxyethylene units, and a strong protonic acid was used as initiator during preparation of the polyacetal copolymer, have lower formaldehyde emission than that fr...

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Bibliographische Detailangaben
Hauptverfasser: DISCH, STEFAN, REISSMANN, LOTHAR, MUECK, KARL-FRIEDRICH
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Zusammenfassung:Colored molding compositions made from polyacetal copolymer, where the polyacetal copolymer essentially consists of oxymethylene units and oxyethylene units, and a strong protonic acid was used as initiator during preparation of the polyacetal copolymer, have lower formaldehyde emission than that from a comparable molding composition for which the polyacetal copolymer was prepared using a Lewis acid as initiator. The formaldehyde emission is generally less than 20 mg/kg, preferably less than 10 mg/kg.