C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/2058
C08F 297/08 (2006.01) C08F 2/34 (2006.01)
Patent
CA 1334449
In a process for producing granular propylene block copolymers in two steps wherein a resinous homopolymer of propylene is produced in the first step and an elastomeric copolymer of propylene with ethylene is produced in the second step, the improvement which comprises conducting the second step in the presence of a granular propylene homopolymer added thereby to produce granular propylene copolymers endowed with an improved granulometric properties such as lowered tackiness and thus improved flowing characteristics.
611733
Fujita Takashi
Matsuura Mitsuyuki
Fetherstonhaugh & Co.
Mitsubishi Petrochemical Co. Ltd.
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