Polypropylene block copolymer and the film thereof

Details Polypropylene block copolymer and the film thereof Polypropylene block copolymer and the film thereof

C - Chemistry, Metallurgy

08

F

C08F 297/00 (2006.01) C08F 297/08 (2006.01) C08L 53/00 (2006.01)

Patent

CA 2105834

ABSTRACT OF THE DISCLOSURE A polypropylene block copolymer comprising a melt- kneaded block copolymer obtained, using a Ziegler-Natta catalyst, by polymerizing monomer comprising propylene to form a polymer comprising polypropylene (component A) in an amount of from 60 to 80% by weight to the total polymer amount in substantially the absence of an inert solvent in a 1st step and then polymerizing a mixture of ethylene and propylene having an ethylene content of from 20 to 50% by weight in a vapor phase to form an ethylene propylene copolymer (component B) in amount of from 20 to 40% by weight to the total polymer amount in a vapor phase in a 2nd step, said block copolymer being such that the intrinsic viscosity of the component B ([?]B) is at least 2.0 dl/g and the ratio ([?]B/[?]A) of the intrinsic viscosity of the component B ([?]B) to the intrinsic viscosity of the component A ([?]A) is 1.8 or less. - 31 -

Affiliated with

Also associated with

Rating

Polypropylene block copolymer and the film thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polypropylene block copolymer and the film thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polypropylene block copolymer and the film thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1907154