公开(公告)号：US20030139546A1

公开(公告)日：2003-07-24

申请号：US10247025

申请日：2002-09-19

Applicant: Dow Global Technologies Inc.

Inventor： Pradeep Jain ,  Lonnie G. Hazlitt ,  Jacquelyn A. deGroot ,  Kenneth W. Anderson

IPC: C08L023/04

CPC classification number: C08L23/0815 ,  C08F210/16 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2314/06 ,  C08L2666/04 ,  C08F210/14 ,  C08F2500/03 ,  C08F2500/12 ,  C08F2500/26 ,  C08F2/001

Abstract: The present invention pertains to an ethylene interpolymer composition characterized as having a narrow molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a composition and a fabricated article made from such composition. The novel composition is characterized as having at least two polymer components, the first component having an ATREF peak temperature, Tpeak1 and a viscosity average molecular weight, Mv1, and the second component having an ATREF peak temperature, Tpeak2, and a viscosity average molecular, Mv2, wherein the temperature differential between Tpeak2 and Tpeak1 decreases with iincreased composition density and Mv1/Mv2 is less than or equal to 1.2. The novel composition exhibits high, balanced toughness properties, good processibility and surprisingly improved optical properties and is particularly well-suited for use in applications such as lamination films trash can liners and heavy duty shipping bags, especially as a blown film.

Abstract translation: 本发明涉及具有窄分子量分布（MWD）和优化组合均匀性的乙烯互聚物组合物，制备这种组合物的方法和由这种组合物制成的制造制品。 该新型组合物的特征在于具有至少两种聚合物组分，第一组分具有ATREF峰温度，Tpeak1和粘均分子量Mv1，第二组分具有ATREF峰温度Tpeak2和粘均分子， Mv2，其中Tpeak2和Tpeak1之间的温差随着组合物浓度的增加而降低，Mv1 / Mv2小于或等于1.2。 该新型组合物显示出高的平衡的韧性，良好的加工性和令人惊奇的改进的光学性能，特别适用于诸如层压膜垃圾桶衬里和重型运输袋，特别是作为吹塑薄膜的应用。