High melt strength polyethylene compositions

C - Chemistry – Metallurgy – 08 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C08L 23/08 (2006.01) C08F 2/08 (2006.01) C08F 8/00 (2006.01) C08F 255/00 (2006.01) C08F 255/02 (2006.01) C08F 257/02 (2006.01) C08F 279/02 (2006.01) C08F 290/00 (2006.01) C08F 290/04 (2006.01) C08F 290/06 (2006.01) C08F 297/08 (2006.01) C08L 23/02 (2006.01) C08L 51/06 (2006.01) C08L 55/00 (2006.01) C08F 110/02 (2006.01) C08F 210/18 (2006.01)

Patent

CA 2274062

The invention is a polyethylene composition having a polydispersity index of less than or equal to 3, an average branching index (g') as measured by GPC/Vis0.9, and a melt strength (MS) (centipoise, 190 ~C) that satisfies the relationship: MS3.0/Melt Index (2.16Kg/190 ~C)+4.5. In a preferred embodiment, these polyethylene compositions comprise A) branched polyethylene copolymers prepared by insertion polymerization of ethylene, ethylene-containing macromers, and optionally, additional copolymerizable monomers, and B) essentially linear ethylene copolymers. Improved melt strength without sacrifing the benefits of narrow polydispersity index are exhibited by the invention compositions.

L'invention concerne une composition à base de polyéthylène ayant un indice de polydispersité inférieur ou égal à 3, un indice moyen de ramification (g') mesuré selon GPC[chromatographie par perméation sur gel]/Vis.?0,9 et une résistance à la fusion (MS) (centipoise, 190 ·C) qui satisfont à la relation: MS?3.0 Indice de fusion (2,16Kg/190 ·C) + 4,5. Dans un mode de réalisation préféré, ces compositions à base de polyéthylène comprennent: A) des copolymères de polyéthylène ramifié, préparés par polymérisation par insertion d'éthylène, de macromères contenant de l'éthylène et, éventuellement, de monomères copolymérisables complémentaires; et B) des copolymères d'éthylène sensiblement linéaire. Les compositions faisant l'objet de cette invention se distinguent par une résistance accrue à la fusion sans perdre pour autant les avantages qu'offre un indice de polydispersité étroit.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

High melt strength polyethylene 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 melt strength polyethylene compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High melt strength polyethylene compositions will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1374613

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.