C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
400/6581
C08F 8/50 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1314344
ABSTRACT OF THE DISCLOSURE A method for the modification of crystalline polymers of propylene is disclosed. A major portion of particles of the propylene polymer is admixed with a minor portion of particles of a composition of a normally solid second polyolefin and an organic peroxide. The second polyolefin, which is a homopolymer of hydrocarbon alpha-olefins having 4 carbon atoms or copolymer thereof with a minor amount of ethylene, has a shear viscosity that is not more than 30% of that of the propylene polymer. The organic peroxide has a half-life at 150°C of from 1-120 minutes. The admixture is mixed at a temperature above the melting point of the propylene polymer and second poly- olefin for a period of time that is at least four times the half life of the organic peroxide at the temperature of mixing. The resultant polymers exhibit improved processability while retaining useful physical properties, for example for injection moulding end-uses. DC-0199
544797
Du Pont Canada Inc.
Mccallum Brooks & Co.
LandOfFree
Modification of crystalline propylene polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modification of crystalline propylene polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modification of crystalline propylene polymers will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1198154