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    • 94. 发明授权
    • Ethylene copolymer composition
    • 乙烯共聚物组成
    • US06774190B1
    • 2004-08-10
    • US09949675
    • 2001-09-12
    • Mamoru TakahashiAkira TodoSeiichi IkeyamaToshiyuki TsutsuiShinya MatsunagaNorio Kaneshige
    • Mamoru TakahashiAkira TodoSeiichi IkeyamaToshiyuki TsutsuiShinya MatsunagaNorio Kaneshige
    • C08L2304
    • C08L23/0815C08L23/06C08L2314/06Y10T428/1345C08L2666/04
    • An ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer (A-1), which has a density, a melt flow rate (MFR), an amount of a n-decane-soluble portion in the specific ranges and whose melt tension (MT) at 190° C. and MFR satisfy the relation MT>2.2×MFR−0.84, and one (co)polymer selected from the group consisting of (B-1) a low-density polyethylene obtained by high-pressure radical polymerization, (B-2) a crystalline polyolefin and (B-3) an olefin type elastomer. Also disclosed is an ethylene copolymer composition comprising an ethylene/&agr;-olefin copolymer composition and the low-density polyethylene (B-1) obtained by high-pressure radical polymerization, said ethylene/&agr;-olefin copolymer (A-2) and (A-3) both having physical properties similar to those of the above ethylene/&agr;-olefin copolymer (A-1) and having intrinsic viscosities different from each other. The ethylene copolymer compositions of the invention are excellent in heat stability and moldability, and able to form films of high transparency, high mechanical strength and anti-blocking resistance.
    • 一种包含乙烯/α-烯烃共聚物(A-1)的乙烯共聚物组合物,其具有密度,熔体流动速率(MFR),特定范围内的正癸烷可溶部分的量及其熔体张力( MT)和MFR满足MT> 2.2×MFR <-0.84>的关系,以及选自(B-1)由(B-1)组成的组中的一种(共)聚合物,通过高压自由基聚合获得的低密度聚乙烯 ,(B-2)结晶聚烯烃和(B-3)烯烃类弹性体。 还公开了包含乙烯/α-烯烃共聚物组合物和通过高压自由基聚合获得的低密度聚乙烯(B-1)的乙烯共聚物组合物,所述乙烯/α-烯烃共聚物(A-2)和(A -3),其物理性质与上述乙烯/α-烯烃共聚物(A-1)的物理性质相似,并且具有彼此不同的特性粘度。 本发明的乙烯共聚物组合物的热稳定性和成型性优异,能够形成高透明度,高机械强度和抗粘连性的薄膜。