Toughened, hydrolysis resistant polycarbonate/polyester blends

Details Toughened, hydrolysis resistant polycarbonate/polyester blends Toughened, hydrolysis resistant polycarbonate/polyester blends

C - Chemistry, Metallurgy

08

L

400/4401

C08L 69/00 (2006.01) C08L 23/06 (2006.01) C08L 67/02 (2006.01)

Patent

CA 2030477

It was surprisingly found that a thermoplastic molding composition which contains polycarbonate and polyalkylene terephthalate resins at a particular weight ratio therebetween is rendered improved impact strength and hydrolysis resistance upon the incorporation of an additive amount of high melt flow high density polyethylene therewith. The molding composition of the invention comprise about 20-90 percent of polycarbonate resin, 80-10 percent of polyalkylene terephthalate (preferably PET) and about 3 to 5 percent of a high density polyethylene resin having a specific gravity of 0.94-0.97 and melt flow of 1 to 80 gm/10 min, as determined in accordance with ASTM D 1238.

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