| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a woody foam using a vegetable resource as a main raw material, and having flame retardancy and antibacterial property. <P>SOLUTION: In this woody foam obtained by foaming and curing a resin composition containing lignin, a curing agent and a foaming agent, lignin is soluble into an organic solvent, and the content of lignin in a solid portion of the resin composition is 5-80 mass%, and a weight-average molecular weight of lignin is 100-7,000, and the content rate of sulfur atoms in lignin is 2 mass% or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
