Polycarbonates with aliphatic ketocarboxyl end groups, mixed wit

Details Polycarbonates with aliphatic ketocarboxyl end groups, mixed wit Polycarbonates with aliphatic ketocarboxyl end groups, mixed wit

1995-03-01

1996-06-11

Buttner, David

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 90, 525 92E, 525148, 528128, 528196, C08G 6418, C08G 6414

Patent

active

055256740

ABSTRACT:
The present invention provides polycarbonates with aliphatic ketocarboxyl end groups, optionally mixed with known aromatic polycarbonates, and a process for their preparation, the chain terminators used being those of formula (I): ##STR1## The present invention also provides mixtures of the polycarbonates or polycarbonate mixtures with reactionless polyisobutylenes.

REFERENCES:
patent: 3790549 (1974-02-01), Feniak
patent: 4358563 (1982-11-01), Quinn et al.
patent: 4806599 (1989-02-01), Priddy
patent: 5023299 (1991-06-01), Meuer

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