公开(公告)号：US20040158011A1

公开(公告)日：2004-08-12

申请号：US10764776

申请日：2004-01-26

Applicant: The Dow Chemical Company

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

IPC: C08F004/44

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 is further characterized as having a Mw/Mn of less than or equal to 3.3 as determined by gel permeation chromatography, an I10/I2>6.6, and a composition density less than 0.945 gram/cubic centimeter. 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。 该新型组合物的特征还在于通过凝胶渗透色谱法测定的Mw / Mn小于或等于3.3，I10 / I2> 6.6，组成密度小于0.945克/立方厘米。 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。

公开(公告)号：US20030022998A1

公开(公告)日：2003-01-30

申请号：US10210139

申请日：2002-07-31

Applicant: The Dow Chemical Company

Inventor： Seema V. Karande ,  Lonnie G. Hazlitt ,  Pradeep Jain ,  Kaelyn Koch ,  Shih-Yaw Lai ,  Li-Min Tau

IPC: C08G085/00

CPC classification number: B32B27/32 ,  B32B2323/046 ,  B32B2323/10 ,  B32B2369/00 ,  C08J5/18 ,  C08J2323/08 ,  C08L23/0815 ,  C08L101/00 ,  C08L2314/06 ,  Y10T428/24 ,  Y10T428/269 ,  C08L2666/04

Abstract: The subject invention provides a film having at least one layer comprising an interpolymer of ethylene and at least on comonomer selected from the group consisting of C3-C20 null-olefins, dienes, and cycloalkenes, wherein the interpolymer is characterized as having a high degree of processability, good optical performance, and good mechanical properties. The subject invention further provides film fabrication processes and polymer compositions which are useful in preparing the subject films.

Abstract translation: 本发明提供了一种膜，其具有包含乙烯和至少一种选自C 3 -C 20α-烯烃，二烯和环烯烃的共聚单体的互聚物的至少一层，其中所述互聚物的特征在于具有高度 可加工性，良好的光学性能和良好的机械性能。 本发明还提供了可用于制备本发明膜的膜制造方法和聚合物组合物。