Wholly aromatic polyesters of isophthalic acid, terephthalic...

Details Wholly aromatic polyesters of isophthalic acid, terephthalic... Wholly aromatic polyesters of isophthalic acid, terephthalic...

C - Chemistry, Metallurgy

08

G

400/1334, 402/20

C08G 63/02 (2006.01) C08G 63/60 (2006.01) C08K 7/02 (2006.01) C08L 67/00 (2006.01)

Patent

CA 2000486

Aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol are described. The five monomers are used in well-specified proportions and yield polymers that display an excellent overall combination of mechanical and thermal properties. The subject copolyesters have melting points of at least about 260° C; their heat distortion temperatures are at least about 200° C. They have fiber ratings of up to 3. The novel polymers can be melt-fabricated using standard injection molding, extrusion and melt- spinning techniques.

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