发明名称 |
NANOPOROUS POLYMERIC FOAM HAVING HIGH CELL DENSITY WITHOUT NANOFILLER |
摘要 |
A polymeric foam has a thermoplastic polymer matrix defining multiple cells, the foam characterized by: (a) the polymer matrix having greater than 50 weight-percent copolymer containing at least two different monomers at least one of which is a methacrylate monomer, each monomer having a solubility parameter lower than 20 (megaPascals)0.5 and a chemical composition where twice the mass fraction of oxygen plus the mass fraction of nitrogen, fluorine and silicon is greater than 0.2; wherein the monomers comprise at least 90 weight-percent of all monomers in the copolymer; (b) at least one of the following: (i) a nucleation site density of at least 3×1014 effective nucleation sites per cubic centimeter of foamable polymer composition; (ii) an average cell size of 300 nanometer or less; (c) a porosity percentage greater than 30%; (d) an absence of nano-sized nucleating additive; and (e) a thickness of at least one millimeter. |
申请公布号 |
EP2545110(B1) |
申请公布日期 |
2016.11.23 |
申请号 |
EP20110713542 |
申请日期 |
2011.02.23 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
COSTEUX, STEPHANE;ZHU, LINGBO;JEON, HYUN;BUNKER, SHANA;KALANTAR, THOMAS |
分类号 |
C08J9/00;C08J9/12 |
主分类号 |
C08J9/00 |
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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