C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3003, 400/50
C08L 77/00 (2006.01)
Patent
CA 1133164
ABSTRACT OF THE DISCLOSURE Toughened multi-phase thermoplastic composition consisting essentially of one phase containing 60 to 99 percent by weight of a polyamide matrix resin of number average molecular weight of at least 5000, and 1 to 40 percent by weight of at least one other phase containing particles of at least one polymer having a particle size in the range of 0.1 to 3.0 micron and being adhered to the polyamide, the at least one polymer having a tensile modulus in the range of 1.0 to 50,000 psi, the ratio of the tensile modulus of the polyamide matrix to tensile modulus of said at least one polymer being greater than 10 to 1. Said at least one polymer is either a branched or straight chain polymer. The toughened compositions are useful for making molded and extruded parts. Such parts possess greater ductility, less reduction in tough- ness from scratches and molded in notches and reduced susceptibility to catastrophic failure when compared to known melt fabricated materials.
253067
E.i. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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