Polyester resins having improved rheological properties

Details Polyester resins having improved rheological properties Polyester resins having improved rheological properties

C - Chemistry, Metallurgy

08

L

C08L 67/02 (2006.01) C08K 5/09 (2006.01) C08K 5/1539 (2006.01) C08L 69/00 (2006.01)

Patent

CA 2201411

Concentrates of dianhydrides of tetracarboxylic acids in polycarbonate resins containing up to about 50% by weight of dianhydride. The concentrates can be added to aromatic polyester resins in the melt in quantities equivalent to contents of dianhydride from 0.05 to 2% by weight of the resin.

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