发明名称 |
SUPPORTED CATALYSTS FOR MANUFACTURE OF POLYMERS |
摘要 |
Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) <SUP>13</SUP>C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S<SUB>ix</SUB>, greater than about -1.20, (iv) a DSC curve with a T<SUB>me </SUB>that remains essentially the same and a T<SUB>max </SUB>that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst. These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles. |
申请公布号 |
EP1448615(B1) |
申请公布日期 |
2008.10.15 |
申请号 |
EP20020776467 |
申请日期 |
2002.11.05 |
申请人 |
DOW GLOBAL TECHNOLOGIES INC. |
发明人 |
COALTER, JOSEPH, N., III;VAN EGMOND, JAN, W.;FOUTS, LEWIS, J., JR.;PAINTER, ROGER, B.;VOSEPJKA, PAUL, C. |
分类号 |
C08F4/64;B32B27/32;C07F7/00;C08F4/02;C08F4/645;C08F4/659;C08F4/6592;C08F10/00;C08F10/06;C08F110/06;C08F210/06;C08F210/16;C08J5/18;C08L23/02;C08L23/10;C08L23/12;C08L23/14;C08L23/16;C08L101/00;C09K3/10;D01F6/06;D01F6/30;D01F6/46 |
主分类号 |
C08F4/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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