High stiffness propylene polymer compositions

Details High stiffness propylene polymer compositions High stiffness propylene polymer compositions

C - Chemistry, Metallurgy

08

K

400/3079, 400/94

C08K 5/52 (2006.01) C08K 5/527 (2006.01) C08L 23/12 (2006.01) C08L 53/00 (2006.01)

Patent

CA 1303270

ABSTRACT OF THE DISCLOSURE A high stiffness propylene polymer compositions is described, comprising: 100 parts by weight of crystalline propylene homopolymers, the relation between isotactic pentad ratio (P) and melt flow rate (MFR) being 1.00 ? P ? 0.015 log MFR + 0.955 and the isotactic pentad ratios (P) of extracts as obtained by successively extracting with boiling n-hexane and boiling n-heptane being, respec- tively, 0.450 to 0.700 and 0.750 to 0.930, or 100 parts by weight of crystalline ethylene- propylene block copolymers obtained by block copolymeriz- ing 70 to 95% by weight, based on the total weight of the block copolymers, of propylene homopolymers obtained by polymerizing propylene at the first stage, having a relation between isotactic pentad ratio (P) and melt flow rate (MFR) of 1.00 ? P ? 0.015 log MFR + 0.955, and 5 to 30% by weight, based on the total weight of the block copolymers, of ethylene, ethylene and propylene, ethylene, propylene and other .alpha.-olefins or propylene and other .alpha.-olefins from which ethylene has been removed at one or more stages, the ethylene content being 3 to 20% by weight based on the total weight of the block copolymers, and 0.01 to 1 part by weight of a phosphate compound represented by the general formula (I): Image (I) wherein all the symbols are as described in the specifi- cation.

543013

Affiliated with

Also associated with

Rating

High stiffness propylene polymer compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High stiffness propylene polymer compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High stiffness propylene polymer compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1173008