Multi-stage propylene polymer, process for producing the...

Details Multi-stage propylene polymer, process for producing the... Multi-stage propylene polymer, process for producing the...

2005-03-15

2010-06-08

Choi, Ling-Siu (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S243000, C525S245000, C525S247000

Reexamination Certificate

active

07732532

ABSTRACT:
A multistage propylene-based polymer including the following components (A) and (B): (A) 5 to 20 wt % of a propylene homopolymer component or a copolymer component of propylene and an α-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [η] of more than 10 dL/g in tetralin at 135° C.; and (B) 80 to 95 wt % of a propylene homopolymer component or a copolymer component of propylene and an α-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [η] of 0.5 to 3.0 dL/g in tetralin at 135° C.

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