Aromatic polycarbonates having reduced combustibility and method

Details Aromatic polycarbonates having reduced combustibility and method Aromatic polycarbonates having reduced combustibility and method

1985-08-09

1987-02-24

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524540, 260DIG24, C08K 534

Patent

active

046457860

ABSTRACT:
Polycarbonate-based compositions the fire-resistance of which is improved with small but effective amounts of a urazole salt having the formula: ##STR1## wherein R and R' are the same or different and are hydrogen, an alkyl group having from one to six carbon atoms, phenyl, or halosubstituted phenyl, and M is an alkali metal, many of such fire-resistive polycarbonates being transparent, together with method for preparing such fire-resistive polycarbonates.

REFERENCES:
patent: 3966530 (1976-06-01), Cutts et al.
patent: 4433085 (1984-02-01), Rottmaier et al.

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