Aliphatische sinterfähige thermoplastische Polyurethane und deren Verwendung

• Main Authors: PEERLINGS, HENRICUS, KAUOLD, WOLFGANG
• Format: Patent
• Language: German
• Published: 06.07.2006
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Die vorliegende Erfindung betrifft aliphatische lichtstabile sinterfähige thermoplastische Polyurethane mit verbessertem Knickverhalten, mit geringem Fogging, guter thermischer Beständigkeit, angenehmer Haptik und guter technischer Verarbeitbarkeit sowie deren Verwendung. Light-stable, sinterable, aliphatic, thermoplastic polyurethane (I) obtained from an isocyanate component (comprising 1,6-hexamethylendiisocyanate), a chain extending component, at least one component with specific molecular weight, a thermoplastic polyurethane, optionally catalysts and additive, thermoplastic polyurethane and light stabilizers, optionally additives and/or auxiliary materials and optionally chain cleavers. Light-stable, sinterable, aliphatic, thermoplastic polyurethane (I) obtained from an isocyanate component (A) (comprising 1,6-hexamethylene diisocyanate (A1) (100-75 mol%) and an aliphatic diisocyanate (A2) (0-25 mol%) or their mixtures (excluding 1,6-hexamethylene diisocyanate)) and a chain extending component (B) (comprising 100-75 mol% of a chain extender (B1) consisting of 1,2-ethane diol, 1,3-propane diol, 1,4-butane diol, 1,5-pentane diol, 1,6-hexanediol, 1,10-decanediol, 1,12-dodecanediol, diethylene glycol, dipropylene glycol, terephthalic acid-bis-ethylene glycol, terephthalic acid-bis-1,4-butandiol, 1,4-di (beta -hydroxyethyl)-hydroquinone, 1,4-di (beta -hydroxyethyl)-bisphenol A and 0-25 mol.% of a chain extender (B2) with a molecular weight of 60-400 or a mixture from chain extender, where (B1) is not identical with (B2) and the arithmetic sum of (A2) and (B2) is 2-28 mol.%; at least one component (C) with an average molecular weight of 450-10000 g/mol and in agent at least 1.8 to at most 3 zerevitinov active hydrogen atoms, where the ratio of the isocyanate group of (A) to the isocyanate reactive group of (B), (C) and optionally (H) is 0.9:1 to 1.1:1 in the presence of 1-30 wt.% of a thermoplastic polyurethane (D), one or several softeners with an average molecular weight of 200-10000 g/mol; optionally catalysts (E) and under additive of 0.1-10 wt.% of thermoplastic polyurethane, light stabilizers (F); optionally additives and/or auxiliary materials (G); and optionally chain cleavers.