Melt-stable, pigmented polycarbonate composition

Details Melt-stable, pigmented polycarbonate composition Melt-stable, pigmented polycarbonate composition

1994-06-22

1995-04-11

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 88, 524 89, 524 90, 524109, 524401, 524407, 524420, 524424, 524427, 524435, C08K 515

Patent

active

054058929

ABSTRACT:
A melt-stable, pigmented thermoplastic molding composition is disclosed. Accordingly, to the composition which contains polycarbonate resin and pigment there is imparted an improved level of melt stability upon the incorporation therewith of an additive amount of a melt stabilizer conforming to ##STR1## where R.sub.1, R.sub.2, R.sub.3 and n are defined. In an additional embodiment the invention relates to a color concentrate containing polycarbonate resin, up to 30% of a pigment and an effective amount of said stabilizer.

REFERENCES:
patent: 3761440 (1973-09-01), Margotte et al.
patent: 4393158 (1983-07-01), Miller
patent: 4397973 (1983-08-01), Scott et al.
patent: 4400482 (1983-08-01), Close
patent: 4522966 (1985-06-01), Funaki et al.
patent: 4722955 (1988-02-01), Dick

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