Polymethylmethacrylate based molding compositions

Details Polymethylmethacrylate based molding compositions Polymethylmethacrylate based molding compositions

1975-12-05

1977-12-27

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4575R, 260 4575D, 260876R, 260DIG24, C08K 320, C08L 5104

Patent

active

040654281

ABSTRACT:
Disclosed herein are polyblend molding compositions which comprise (A) a polymethylmethacrylate matrix polymer; (B) polychloroprene rubber which is grafted with methylmethacrylate; and (C) a metal oxide. Specimens molded from these polyblends have a UL-94 rating of at least V-1 and a smoke level of less than 300 D.sub.m Flaming using the NBS smoke test.

REFERENCES:
patent: 3725504 (1973-04-01), Owston
patent: 3830889 (1974-08-01), Deets et al.
patent: 3903037 (1975-09-01), Deets
patent: 3929722 (1975-12-01), Bak et al.

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