公开(公告)号：US20050079352A1

公开(公告)日：2005-04-14

申请号：US10478568

申请日：2002-05-24

申请人： Joey Glorioso ,  James Burgess ,  Jiansheng Tang ,  Victoria Dimonie ,  Andrew Klein

发明人： Joey Glorioso ,  James Burgess ,  Jiansheng Tang ,  Victoria Dimonie ,  Andrew Klein

IPC分类号： B01J13/14 ,  B01J13/18 ,  C08G18/00 ,  C08G101/00 ,  C08J9/32 ,  C08K7/22 ,  C08L75/06 ,  C08L101/12 ,  C09K3/00 ,  C08J9/16

CPC分类号： B01J13/14 ,  B01J13/185 ,  C08G2101/0025 ,  C08J9/32 ,  C08J2203/22 ,  C08J2375/04 ,  C08K7/22 ,  C08L75/06 ,  Y10T428/2982 ,  Y10T428/2985 ,  Y10T428/2987

摘要： Hollow thermoexpandable particles or microspheres are provided that contain hydrocarbon blowing agents and have a shell polymer that can be softened at the onset of the expansion temperature and solidified at a higher temperature (thermoset) in an expanded state. Preferably, the microspheres have a shell of thermally expandable and thermally crosslinkable polymer and a hollow interior that contains a hydrocarbon liquid that boils at a temperature below the heat activated crosslinking temperature of the polymer shell. The crosslinking of the shell polymer during or after expansion, which is heat activated at an elevated temperature, can solidify the shell polymer and, then, maintain the expanded volume of the microspheres. The thermoexpandable thermoset polymer particles are useful in insulation, packaging, for making foam materials such as polyurethane or polyisocyanurate rigid foams. The invented thermoset microspheres can substantially improve the close cell percentage and compressive strength of the foam materials and make the foam manufacturing less hazardous.

摘要翻译： 提供了含有烃发泡剂的空心热膨胀性颗粒或微球体，并且具有可以在膨胀温度开始时软化并在膨胀状态下在较高温度（热固性）下固化的壳聚合物。 优选地，微球体具有可热膨胀和可热交联的聚合物的壳体和中空内部，其含有在低于聚合物壳体的热活化交联温度的温度下沸腾的烃液体。 膨胀之前或之后的壳聚合物在升高的温度下热活化的交联可以使壳聚合物固化，然后保持微球的膨胀体积。 可热膨胀的热固性聚合物颗粒可用于绝缘，包装，用于制造泡沫材料如聚氨酯或聚异氰脲酸酯硬质泡沫。 本发明的热固性微球体可以显着地改善泡沫材料的紧密细胞百分数和抗压强度，并使泡沫制造的危害更小。