C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/04 (2006.01) C08L 23/12 (2006.01) C08L 23/14 (2006.01) C08L 23/16 (2006.01) C08L 51/06 (2006.01)
Patent
CA 2057471
-21- IMPACT POLYMER BLEND Abstract of the Invention A blend comprising: (a) an isotactic polypropylene matrix containing an ethylene/propylene copolymer dispersed phase, said combination having dual melting peaks, a first peak in the range of about 150°C to about 165°C, attributable to the matrix, and a second peak in the range of about 123°C to about 132°C having at least about 2.2 calories per gram melting endotherm, attributable to the copolymer, component (a) being present in the blend in an amount of about 60 to about 90 percent by weight based on the weight of the blend; and (b) an ethylane/l-butene copolymer containing about 85 to about 90 percent by weight ethylene; having a density in the range of about 0.890 to about 0.910 gram per cubic centimeter; and having an Mw/Mn ratio of up to about 8, component (b) being present in the blend in an amount of abut 10 to about 40 percent by weight based on the weight of the blend. D-16521
Ficker Harold K.
Sim & Mcburney
Union Carbide Chemicals And Plastics Company Inc.
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