Alternating copolyestercarbonate resins

Details Alternating copolyestercarbonate resins Alternating copolyestercarbonate resins

C - Chemistry, Metallurgy

08

G

402/175, 402/33,

C08G 63/64 (2006.01)

Patent

CA 1187647

ABSTRACT OF THE DISCLOSURE Alternating copolyestercarbonate resins having repeating units of the formula: Image wherein R1 is para-phenylene; each R is independently an aromatic hydrocarbylene or inertly substituted aro- matic hydrocarbylene, e.g., Image ; and x is a number from 0.05 to 0.65 exhibit physical properties such as heat resistance, clarity and impact strength that are superior to the comparable properties of corresponding random copolymers. Such resins are useful for making transparent tough films and molded articles having high heat resistance.

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