Polycarbonates having carbamate terminal groups

Details Polycarbonates having carbamate terminal groups Polycarbonates having carbamate terminal groups

1977-11-02

1978-09-05

Pertilla, Theodore E.

Mineral oils: apparatus

Condensing

Dephlegmators or fractionating columns

528199, C08G 6362

Patent

active

041119100

ABSTRACT:
Aromatic polycarbonates having carbamate end groups are prepared using a terminating amount of ammonia, ammonium compounds, primary cycloalkyl, aliphatic, or aralkyl amines and secondary cycloalkyl, alkyl, or aralkyl amines. The products of this invention have been found to have a relatively high limited oxygen index compared to polycarbonates without carbamate end groups.

REFERENCES:
patent: 3028365 (1962-04-01), Schnell et al.
patent: 3215668 (1965-11-01), Bissinger et al.
patent: 3223678 (1965-12-01), Bolgiano

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