C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/3077, 400/40
C08L 23/02 (2006.01) C08J 3/22 (2006.01) C08K 5/00 (2006.01)
Patent
CA 1249383
ABSTRACT OF THE DISCLOSURE A polyolefin blend comprising, in physical admixture, a major portion of particles of a polyethylene and a minor portion of particles of a composition of a thermoplastic second polymer, is disclosed. The polyethylene is selected from the group consisting of homopolymers of ethylene and copolymers of ethylene and at least one C4 - C10 higher alpha-olefin, and the second polymer is a normally solid thermoplastic polymer having a melting point of less than 185°C and a shear viscosity that is not more than that of the polyethylene when measured at 200°C and a shear rate of 400 sec-1 with the proviso that the second polymer is not a homopolymer or copolymer derived solely from hydrocarbon alpha-olefins having 2-10 carbon atoms. Examples of second polymers are (a) homopolymers and copolymers of unsaturated hydrocarbons in which at least one monomer is other than a C2 - C10 alpha-olefin, e.g. ethylene/propylene elastomers, polystyrene and styrene/- butadiene/styrene copolymers, (b) copolymers of ethylene with ethylenically unsaturated carboxylic acids and anhydrides, and esters thereof, and (c) modified polymers e.g. chlorinated polyethylene, grafted and ionomeric polymers. The composition of the second polymer contains a reactive agent that is capable of reacting with polyolefins that are in a molten state, such agents being cross-linking agents and/or modifying agents. In an alternative embodiment, the polyethylene may be more broadly defined as being a homopolymer or copolymer of hydrocarbon alpha- olefins having 2-10 carbon atoms. The blends may be used in a wide variety of processes, including blow-moulding processes, film and pipe extrusion processes, sheet thermo- forming processes and rotational moulding processes.
485651
Boivin Daniel Wilfred
Zelonka Ronald Andrew
Du Pont Canada Inc.
Liqui-Box Canada Inc.
Mccallum Brooks & Co.
LandOfFree
Blends of polyolefins with polymers containing reactive agents does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blends of polyolefins with polymers containing reactive agents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blends of polyolefins with polymers containing reactive agents will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1259958