Braskem S.a.

Tadeu Mezacasa Forest

Moisés Magalhães Werlang

Joel Carr

Gustavo Gori Lusa

Heterophasic polypropylene copolymer compositions and methods of making the same include a matrix phase of a random polypropylene-based copolymer; and an elastomeric rubber phase dispersed in the matrix phase, wherein the elastomeric rubber phase includes propylene and one or more comonomers and has a viscosity index ratio, relative to a viscosity index of the random polypropylene-based copolymer, that ranges from 0.3 to 1.1; and wherein an average particle size of the dispersed elastomeric rubber phase is less than 300 nm. Methods include dispersing an elastomeric rubber phase that includes propylene and one or more comonomers into a matrix phase of a random polypropylene-based copolymer, wherein the elastomeric rubber phase has a viscosity index ratio, relative to a viscosity index of the random polypropylene-based copolymer that ranges from 0.3 to 1.1.

Proplylene-based copolymer product

Polymer compositions may include a matrix phase comprising a polypropylene-based polymer; and an elastomeric rubber phase; wherein the polymer composition has melt flow rate (MFR) according to ASTM D1238 at 230&#xb0; C./2.16 kg equal to or greater than 90 g/10 min and at least one feature selected from (I) an Izod impact resistance according to ASTM D256A at 23&#xb0; C. equal to or greater than 400 J/m; (II) an instrumented drop impact at &#x2212;30&#xb0; C., average total energy, equal to or greater than 17 J; or (III) an instrumented drop impact at &#x2212;30&#xb0; C., average percent ductility, equal to or greater than 60%.

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São Paulo, Brazil

Tadeu Mezacasa Forest