Coextruded products with improved weatherability

Details Coextruded products with improved weatherability Coextruded products with improved weatherability

1988-06-23

1991-02-12

Sluby, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428412, 2641761, B32B 2736

Patent

active

049923226

ABSTRACT:
A coextruded moisture resistant polycarbonate article has a relative thin moisture resistant, polyphthalate-carbonate layer adhered to a relatively thick aromatic polycarbonate corelayer. The coextruded article has the high degree of transparency of aromatic polycarbonates and the moisture resistance and haze resistance of polyphthalate-carbonate. Coextruded sheet and film of the present invention may be subsequently thermoformed without losses in the desirable properties thereof.

REFERENCES:
patent: 4465820 (1984-08-01), Miller et al.
patent: 4513037 (1985-04-01), Collins
patent: 4556606 (1985-12-01), Olson
patent: 4559388 (1985-12-01), Liu et al.
patent: 4643937 (1987-02-01), Dickinson et al.
patent: 4707393 (1987-11-01), Vetter
patent: 4776913 (1988-10-01), Goossens et al.
patent: 4824723 (1989-04-01), Campbell et al.

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