Invention Grant
US07682698B2 Multilayered film made of (meth)acrylate copolymer and polycarbonate
失效
由(甲基)丙烯酸酯共聚物和聚碳酸酯制成的多层薄膜
- Patent Title: Multilayered film made of (meth)acrylate copolymer and polycarbonate
- Patent Title (中): 由(甲基)丙烯酸酯共聚物和聚碳酸酯制成的多层薄膜
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Application No.: US12436809Application Date: 2009-05-07
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Publication No.: US07682698B2Publication Date: 2010-03-23
- Inventor: Klaus Schultes , Michael Wicker , Klaus Albrecht , Mona Rueppel , Gabriele Dassinger , Eric Reinheimer , Johann Kappacher , Andreas Hoellebauer
- Applicant: Klaus Schultes , Michael Wicker , Klaus Albrecht , Mona Rueppel , Gabriele Dassinger , Eric Reinheimer , Johann Kappacher , Andreas Hoellebauer
- Applicant Address: DE Darmstadt AT Piesendorf
- Assignee: Roehm GmbH,Senoplast Klepsch & Co. GmbH
- Current Assignee: Roehm GmbH,Senoplast Klepsch & Co. GmbH
- Current Assignee Address: DE Darmstadt AT Piesendorf
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE10351535 20031103
- Main IPC: B32B27/36
- IPC: B32B27/36 ; C08G64/00

Abstract:
The invention relates to a multilayer film encompassing at least one upper layer a) and one middle layer b) composed of (meth)acrylate copolymers, and also a backing layer c) composed of polycarbonate, where the upper layer a) comprises a light stabilizer and is composed of a (meth)acrylate copolymer which can form semicompatible mixtures with the polycarbonate of the backing layer c), where a test specimen produced from a mixture composed of 20% by weight of (meth)acrylate copolymer and 80% by weight of polycarbonate has a tensile strain at break of at least 75% (ISO 527-2) at 23° C., the middle layer b) comprises a dye and, where appropriate, a light stabilizer, and is composed of an identical or different (meth)acrylate copolymer which can form semicompatible mixtures with the polycarbonate of the backing layer c), where a test specimen produced from a mixture composed of 20% by weight of (meth)acrylate copolymer and 80% by weight of polycarbonate has a tensile strain at break of at least 75% (ISO 527-2) at 23° C., and the backing layer c) is composed of polycarbonate which can, where appropriate, comprise up to 30% by weight of the material of the layers a) and b). The invention also relates to the production and uses of the multilayer film, and also to semicompatible polymer mixtures composed of (meth)acrylate copolymers and polycarbonate.
Public/Granted literature
- US20090215962A1 MULTILAYERED FILM MADE OF (METH)ACRYLATE COPOLYMER AND POLYCARBONATE Public/Granted day:2009-08-27
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