Amide and carbamate terminated copolyester-carbonates

Details Amide and carbamate terminated copolyester-carbonates Amide and carbamate terminated copolyester-carbonates

1983-11-10

1985-03-19

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528126, 528128, 528173, 528182, 528193, 528194, C08G 6364

Patent

active

045060649

ABSTRACT:
Copolyester-carbonates having amide and carbamate terminal groups. These copolyester-carbonates are prepared by reacting (i) a carbonate precursor, (ii) at least one difunctional carboxylic acid or an ester forming reactive derivative thereof, (iii) at least one dihydric phenol, and (iv) a chain terminating amount of at least one carbamate-amide precursor. These copolyester-carbonates exhibit improved thermal stability.

REFERENCES:
patent: 3233678 (1965-12-01), Bolgiano
patent: 3275601 (1966-09-01), Schnell et al.
patent: 4001184 (1977-01-01), Scott
patent: 4111910 (1978-09-01), Baggett
patent: 4219635 (1980-08-01), Cooke et al.
patent: 4262110 (1981-04-01), Mark
patent: 4395534 (1983-07-01), Shimizu et al.

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