公开(公告)号：DE2545726A1

公开(公告)日：1977-04-21

申请号：DE2545726

申请日：1975-10-11

Applicant: BASF AG

Inventor： STANGE KARL DIPL CHEM DR ,  JENNE HELMUT DIPL CHEM DR ,  KROEBL KARL DIPL ING DR ,  KOENIG ULRICH DIPL CHEM DR

IPC: B32B5/28 ,  C08J5/12 ,  B32B27/12

Abstract: Laminates comprise >=3 layers A, B and C, such that A and C consist of similar or different thermoplastics, and the middle layer B consists of a fibre-reinforced thermoplastic and the layers are strongly bonded together. The layer B consists of a block copolymer of formula (X-Y)n or X-(Y-X)n where X=polystyrene, Y=a diene polymer and n=1, 2 or 3, in which the fibrous reinforcement is embedded. Used for screens, wall elements, decorative panels, etc. and mouldings. Laminates of thermoplastics with glass mat interlayers are known but adhesion is poor unless the glass is specially treated. Rigid materials such as impact resistant polystyrene lose their toughness and soft prods. Such as polyethylene are not sufficiently rigid. These disadvantages are avoided if the glass fibres are embedded in a rubbery, elastic but easy flowing and mouldable thermoplast. Such prods. adhere well to both glass fibres (without pretreatment) and impact resistant polystyrene. A laminate with outer layers of polystyrene and polyethylene comprised alternate inner layers of glass mat and a styrene-butadiene block copolymer contg. 40 wt. % styrene.