C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/08 (2006.01) C08F 210/16 (2006.01) C08L 23/20 (2006.01)
Patent
CA 2343375
An in situ blend comprising a mixture of first and second ethylene/alpha- olefin copolymers wherein the alpha-olefin has 3 to 8 carbon atoms, the first copolymer having a density in the range of 0.9035 to 0.908 gram per cubic centimeter and a roll-milled flow index in the range of about 1.4 to about 2.6 grams per 10 minutes and the second copolymer having a density in the range of 0.925 to 0.945 gram per cubic centimeter and a melt index in the range of about 200 to about 400 grams per 10 minutes; the weight ratio of the first copolymer to the second copolymer being in the range of about 45:55 to about 60:40 and the in situ blend having a density in the range of 0.919 to 0.924 gram per cubic centimeter, a melt flow ratio in the range of about 85 to about 115 and a flow index of 65 to 90 grams per 10 minutes.
L'invention concerne un mélange in situ de premier et second copolymères d'éthylène/alpha-oléfine. L'alpha-oléfine a entre 3 et 8 atomes de carbone. Le premier copolymère a une densité comprise entre 0,9035 et 0, 908 gramme par centimètre cube et un indice de fluage à la presse à cylindres compris entre environ 1,4 gramme et environ 2,6 grammes par 10 minutes. Le second copolymère a une densité comprise entre 0,925 et 0,945 gramme par centimètre cube et un indice de fusion compris entre environ 200 et environ 400 grammes par 10 minutes. Le rapport de poids premier/second copolymère est compris entre environ 45:55 et environ 60:40, et le mélange in situ a une densité comprise entre 0,919 et 0,924 gramme par centimètre cube, un rapport de fusion compris entre environ 85 et environ 115 et un indice de fluage compris entre 65 et 90 grammes par 10 minutes.
Buhler-Vidal Jorge Oscar
Ealer George Edward
Michie William James Jr.
Tilston Michael William
Upham Stephanie Marie
Sim & Mcburney
Union Carbide Chemicals & Plastics Technology Corporation
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