Process for making polycarbonates using ammonia or ammonia compo

Details Process for making polycarbonates using ammonia or ammonia compo Process for making polycarbonates using ammonia or ammonia compo

1976-07-12

1977-10-25

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 6362

Patent

active

040555445

ABSTRACT:
Thermoplastic polycarbonates are prepared by interfacial polymerization wherein carbonyl halides, dihydric phenols and a catalytic amount of ammonia or an ammonium compound which liberates ammonia during the reaction are reacted.
The polycarbonates thus prepared have chloroformate end groups and are useful as intermediates to be capped with various terminal groups in a know manner.

REFERENCES:
patent: 3223678 (1965-12-01), Bolgiano
patent: 3290409 (1966-12-01), Munro
patent: 3312662 (1967-04-01), Kurkjy et al.
Condensed Chem. Dictionary 8th Edit. p. 49, May, 1974.

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