| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a granular material for a molding resin which has particles not easily broken when mixed with a resin component of high viscosity, and can keep a hollow state even if cracked partially, has high heat resistance, and can be used for a molding resin such as engineering plastics and which provides a satisfactory lightweight effect with addition of a smaller amount than conventional ones, and to provide a lightweight molding resin composition of the granular material for a molding resin. <P>SOLUTION: The granular material for the molding resin comprising hollow silica particles to be compounded in the molding resin, has≥5μm average particle diameter and has an inner space composed of a plurality of independent closed cells partitioned with partitioning walls. It is preferable that the granular material has an average particle diameter of 5μm to 20 mm, a residual ratio of floating at 8 MPa hydrostatic pressure of 25% or more and a weight per unit volume of 0.05 to 0.35 g/cm<SP>3</SP>. The lightweight molding resin composition contains the granular material. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
