Biodegradable polyester film

• Main Authors: KECK, JURGEN, AUFFERMANN, JORG, LOOS, ROBERT, YANG, XIN, FREESE, FRANZISKA
• Format: Patent
• Language: English
• Published: 25.06.2015
• 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

Biodegradable polyester film comprises: (a) 75-100 wt.% of a biodegradable polyester based on aliphatic and/or aromatic dicarboxylic acids and an aliphatic dihydroxy compound; (b) 0-25 wt.% of polylactic acid; (c) 10-25 wt.% of calcium carbonate; (d) 3-15 wt.% of talc; (e) 0-1 wt.% of an epoxy-containing copolymer based on styrene, acrylic acid esters and/or methacrylic acid ester; and (f) 0-2 wt.% of 2-(4,6-bis-biphenyl-4-yl-1,3,5-triazin-2-yl)-5-(2-ethyl-(n)-hexyloxy)phenol. Independent claims are included for: (1) a master batch containing 75-95 wt.% of the component (a), and the component (b), and 5-25 wt.% of the component (f); and (2) producing mulch film comprising 75-100 wt.% of the component (a), 0-25 wt.% of the component (b), 0-25 wt.% of the component (c), 0-15 wt.% of the component (d), 0-1 wt.% of component (e) and 0.1-1.5 wt.% the component (f).