发明名称 |
IONOMER COMPOSITIONS WITH LOW HAZE AND HIGH MOISTURE RESISTANCE AND ARTICLES COMPRISING THE SAME |
摘要 |
A sodium/zinc mixed ionomer comprises carboxylate groups and a combination of counterions that consists essentially of sodium cations and zinc cations. The sodium/zinc mixed ionomer is the neutralization product of a precursor acid copolymer. The precursor acid copolymer comprises copolymerized units of an α-olefin and an α,&bgr;-ethylenically unsaturated carboxylic acid, and it has a melt flow rate of about 10 to about 4000 g/10 min. In addition, the precursor acid copolymer, when neutralized to a level of about 40% to about 90%, and when comprising counterions that consist essentially of sodium ions, produces a sodium ionomer that has a freeze enthalpy that is not detectable or that is less than about 3.0 j/g, when determined by differential scanning calorimetry. Further provided are articles comprising or prepared from the sodium/zinc mixed ionomer. |
申请公布号 |
EP2376548(A1) |
申请公布日期 |
2011.10.19 |
申请号 |
EP20090836577 |
申请日期 |
2009.11.02 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HAUSMANN, KARLHEINZ;HAYES, RICHARD, ALLEN;PESEK, STEVEN, C.;SHAFFER, W., ALEXANDER;SMITH, CHARLES, ANTHONY |
分类号 |
C08F220/06;B32B17/10;C08F8/44;C08L23/08 |
主分类号 |
C08F220/06 |
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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