Light stable polystyrene polymethylmethacrylate laminate and...

Details Light stable polystyrene polymethylmethacrylate laminate and... Light stable polystyrene polymethylmethacrylate laminate and...

B - Operations, Transporting

32

B

154/140, 154/71,

B32B 27/08 (2006.01) B32B 27/28 (2006.01) B32B 27/36 (2006.01) B32B 31/26 (1990.01)

Patent

CA 2035625

ABSTRACT A light-stable, optically clear laminate construction and method of making it which utilizes inexpensive styrenic polymers is provided. The laminate formed exhibits strong interfacial adhesion without the need for additional glue or adhesive layers through the use of pendant functionalized hydroxyl groups incor- porated into the styrenic polymer by copolymerization. These pendant hydroxyl groups react with active pendant ester groups on the other polymer layer in the laminate to form strong covalent interfacial bonds by heating the layers, preferably either in a compression molding step or during coextrusion of the layers. 34,423-F

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