Light stable polystyrene-polymethylmethacrylate laminate and met

Details Light stable polystyrene-polymethylmethacrylate laminate and met Light stable polystyrene-polymethylmethacrylate laminate and met

1990-02-06

1992-02-25

Buffalow, Edith L.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428520, 428522, B32B 2708

Patent

active

050912500

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 incorporated 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.

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"Light Stable PS Sheet on the Way", Plastic World, Oct. 1982.

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