Aromatic polyesters and a method for producing the same

Details Aromatic polyesters and a method for producing the same Aromatic polyesters and a method for producing the same

C - Chemistry, Metallurgy

08

G

C08G 63/60 (2006.01) C08G 63/19 (2006.01) C08G 63/682 (2006.01) C08G 63/688 (2006.01)

Patent

CA 2069492

ABSTRACT OF THE DISCLOSURE An aromatic polyester superior in heat resistance and mechanical properties and satisfactory in lightness and color tone is provided. The aromatic polyester has resorcinol structure, has the formula (1), (1) Image wherein R is halogen, C1-C5 alkyl, or phenyl; m is an integer of 0 to 2, and when m is 2, the two substituents represented by R may be different from each other; and gives a powder fraction having a lightness (L value) of 70 or more and a red degree (a value) of 5 or less, which powder fraction is obtained by pulverizing the heat-resistant aromatic polyester, sieving the pulverized polyester by Tyler standard sieves and being allowed to pass through 60-mesh sieve but not 325-mesh sieve.

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