利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN1185266C 乙烯(共)聚合物及其用途 失效 - 权利终止

乙烯(共)聚合物及其用途
摘要：
本发明的乙烯(共)聚合物具有优良的模塑性、机械特性等，适用于各种各样的模塑产品，尤其是管子。例如是乙烯均聚物或乙烯/C4-20α-烯烃共聚物，其由13C-NMR测得的甲基支链数为每1,000个碳原子低于0.1个，由GPC测得的Mw/Mn比为大于1.8而小于4.5；乙烯均聚物或乙烯/C3-20α-烯烃共聚物，其熔体张力(MT)和溶胀比(SR)满足关系log(MT)＞12.9-7.15×SR，其特性粘数([η])和熔体流动速率(MFR)满足关系：在MFR＜1的情况下，[η]＞1.85×MFR-0.192，或在MFR≥1的情况下，[η]＞1.85×MFR-0.213。
摘要（英）：

An ethylene (co)polymer of the present invention is a (co)polymer with excellent moldability and mechanical properties and either an ethylene homopolymer or a copolymer of ethylene and an alpha -olefin of 4 to 20 carbon atoms. The (co)polymer has methyl branches measured by <13>C-NMR less than 0.1 in number per 1,000 carbon atoms and Mw/Mn measured by GPC not lower than 1.8 and lower than 4.5. The (co)polymer is either an ethylene homopolymer or a copolymer of ethylene and an alpha -olefin of 3 to 20 carbon atoms. The melt tension (MT) and the swell ratio (SR) satisfy the relation; log(MT) > 12.9 - 7.15 x SR; and the intrinsic viscosity (Ä eta Ü) and the melt flow rate (MFR) satisfy the relation; Ä eta Ü > 1.85 x MFR<-0.192> in the case of MFR < 1 and the relation; Ä eta Ü > 1.85 x MFR<-0.213> in the case of MFR ≥ 1. Such an ethylene (co)polymer can be usable for various molding applications and especially suitable for pipes.

公开/授权文献
0/0