发明名称 |
NUCLEATED PROPYLENE-BASED POLYOLEFIN COMPOSITIONS |
摘要 |
A polyolefin composition, particularly fit for the production of extrusion blow molded articles, comprising (a) a propylene-ethylene copolymer having a content of units deriving from ethylene of 4.0% by weight or higher, and (b) a nucleating agent and having a crystallization temperature (Tc) higher than 117° C. can be obtained by copolymerizing propylene and ethylene in the presence of a catalyst system obtained by contacting a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 40 to 90% by mol with respect to the total amount of donors and selected from succinates and the other selected from 1,3 diethers, an aluminum hydrocarbyl compound, and optionally an external electron donor compound. |
申请公布号 |
US2016083561(A1) |
申请公布日期 |
2016.03.24 |
申请号 |
US201414785558 |
申请日期 |
2014.03.12 |
申请人 |
BASELL POLIOLEFINE ITALIA S.R.L. |
发明人 |
Galvan Monica;Mann Andreas;Caputo Tiziana;Mazzucco Antonio;Pellegatti Giampaolo |
分类号 |
C08K5/527;C08F210/16 |
主分类号 |
C08K5/527 |
代理机构 |
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代理人 |
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主权项 |
1. A polyolefin composition comprising:
(i) a propylene-ethylene copolymer having a content of units deriving from ethylene of about 4.0% by weight or higher, and (ii) a nucleating agent; wherein the composition has a crystallization temperature (Tc), measured by DSC, higher than 117° C. |
地址 |
Milano IT |