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    • 8. 发明授权
    • Blends of ethylenic polymers with improved modulus and melt strength and articles fabricated from these blends
    • 具有改进的模量和熔体强度的乙烯类聚合物的共混物和由这些共混物制成的制品
    • US06723793B2
    • 2004-04-20
    • US10350564
    • 2003-01-24
    • Thomas OswaldBharat I. ChaudharyJeffrey Weinhold
    • Thomas OswaldBharat I. ChaudharyJeffrey Weinhold
    • C08L2306
    • C08L23/0815C08L23/02C08L2205/02C08L2207/07C08L2666/04
    • A blend which comprises; A) a heterogeneous or homogenous linear ethylene homopolymer or interpolymer; B) a branched homopolymer or interpolymer; wherein said blend has; 1) a melt index, I2, of about 0.05 to about 20 g/10 min; 2) a flexural modulus of ≧100,000 psi or ≦30,000 psi; 3) a melt strength of ≧2 cN; 4) a melt extensibility of ≧25 mm/sec; and 5) wherein said melt strength of said blend meets the following relationship; Melt strength≧FMS*[(f*A)+((1−f)*B)]; where: A=3.3814*(I2)−06476 and B=16.882*(I2)−06564; where I2 is the measured melt index of the blend; f is the weight fraction of the linear polyethylene in the blend and FMS is ≧1.1. Also included in the present invention are foams, films, fibers, blow molded articles, wire and cable articles and extrusion coatings comprising said blend.
    • 一种共混物,其包含:A)非均相或均匀的线性乙烯均聚物或互聚物; B)支化均聚物或互聚物;其中所述共混物具有:1)约0.05至约20g / 10min的熔体指数I 2; 2 )≥100000psi或<= 30,000PSI的挠曲模量; 3)≥2cN的熔体强度; 4)> 25mm / sec的熔体延展性; 和5)其中所述共混物的熔体强度满足以下关系:其中:A = 3.3814 *(I2)< - 06476>和B = 16.882 *(I2)< - 06564>; 其中I 2是混合物的测量熔体指数; f是共混物中线性聚乙烯的重量分数,FMS = 1.1。本发明还包括泡沫,膜,纤维,吹塑制品,电线和电缆制品以及包含所述共混物的挤出涂层。