Multilayered film made of (meth)acrylate copolymer and polycarbonate

• Main Authors: DASSINGER GABRIELE, KAPPACHER J, SCHULTES KLAUS, WICKER MICHAEL, REINHEIMER ERIC, HELLEBALL A, ALBRECHT KLAUS, LIPPER M
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2010
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

The invention relates to a multilayered film comprising at least one upper layer a), a middle layer b) made of (meth)acrylate copolymer, and a supporting layer c) made of polycarbonate. Upper layer a) contains a light-stability agent and is made of a (meth)acrylate copolymer that, together with the polycarbonate of supporting layer c), can form partially compatible mixtures. A test piece, which is made from a mixture consisting of 20 % by weight of (meth)acrylate copolymer and 80 % by weight of polycarbonate, has a breaking elongation (ISO 527-2) of at least 75 % at 23 DEG C. The middle layerb) contains a colorant and, optionally, a light-stability agent and is made from an identical or different (meth)acrylate copolymer that, together with the polycarbonate of supporting layer c), can form partially compatible mixtures. A test piece, which is made from a mixture consisting of 20 % by weight of (meth)acrylate copolymer and 80 % by weight of polycarbonate, has a breaking elongation (ISO 527-2) of at least 75 %