DISCOLOURATION-RESISTANT ARTICLES AND THEIR USE

• Main Authors: Aepli, Etienne, Pfleghar, Mark, Hoff, Heinz, Hoffmann, Botho
• Format: Patent
• Language: English; French; German
• Published: 24.04.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Use of polyamide molding composition comprising 30-100 wt.% polyamide or polyamide mixture (A) containing 50-100 wt.% amorphous and/or microcrystalline polyamide (A1) and 0-50 wt.% semi-aromatic polyamide (A2) different from the amorphous and/or microcrystalline polyamide (A1), component (B) containing 0-70 wt.% fibrous fillers (B1) and/or particulate fillers (B2), component (C) containing 0-30 wt.% impact toughness modifier and/or polymers different from the polyamide or polyamide mixture (A), 0-25 wt.% flame retardant (D) and 0-3 wt.% additives (E), is claimed. Use of polyamide molding composition comprising 30-100 wt.% polyamide or polyamide mixture (A) containing 50-100 wt.% amorphous and/or microcrystalline polyamide (A1) having glass transition temperature of 100[deg] C or more, based on component (a1) containing 20-100 mol% cycloaliphatic diamine and 0-80 mol% aliphatic and/or aromatic diamine, and 6C or more aromatic and/or aliphatic dicarboxylic acid (a2) and 0-50 wt.% semi-aromatic polyamide (A2) different from the amorphous and/or microcrystalline polyamide (A1), component (B) containing 0-70 wt.% fibrous fillers (B1) and/or particulate fillers (B2), component (C) containing 0-30 wt.% impact toughness modifier and/or polymers different from the polyamide or polyamide mixture (A), 0-25 wt.% flame retardant (D) and 0-3 wt.% additives (E), is claimed. The sum total content of the components (A)-(E) is 100 wt.%. More than 45 mol% of total content of monomers of components (a1) and (a2) are replaced by 6-12C lactam or 6-12C amino carboxylic acid. The total content of the amorphous and/or microcrystalline polyamide (A1) and semi-aromatic polyamide (A2) is 100 wt.%.