发明名称 |
FOAMABLE THERMOPLASTIC REACTOR BLENDS AND FOAM ARTICLE THEREFROM |
摘要 |
This invention relates to a foamable blend comprising an in-reactor polymer blend comprising: (a) a first propylene polymer component comprising 90 to 100 wt% propylene and from 0 to less than 10 wt% comonomer, said first propylene component having a Tm of 120°C or more; and (b) a second propylene polymer component comprising from 30 to 90 wt% propylene and 70 to 10 wt% comonomer, said second propylene polymer having an Mw of 30,000 g/mol or more, and said second propylene-containing polymer having a crystallinity different by at least 5% from the first polymer, wherein the polymer blend, prior to combination with a foaming agent, has: (i) a Tm of at least 120°C; (ii) a MFR of 10 dg/min or more; (iii) a tensile strength of at least 8 MPa; (iv) an elongation at break of at least 200%; and (v) a ratio of elongational viscosity at break to linear viscosity of 5 or more when the elongational viscosity is measured at a strain rate of 1 sec-1 and temperature of 180°C; and where when the blend is foamed with a foaming agent, the foamed article has a density of 800 kg/m3 or less. |
申请公布号 |
WO2012094099(A3) |
申请公布日期 |
2012.10.04 |
申请号 |
WO2011US64139 |
申请日期 |
2011.12.09 |
申请人 |
EXXONMOBIL CHEMICAL PATENTS INC.;JIANG, PEIJUN;SAHNOUNE, ABDELHADI;DEKMEZIAN, ARMENAG |
发明人 |
JIANG, PEIJUN;SAHNOUNE, ABDELHADI;DEKMEZIAN, ARMENAG |
分类号 |
C08J9/04;C08F10/06;C08J9/06;C08L23/10 |
主分类号 |
C08J9/04 |
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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