| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a urethane-based resin material which is highly heat resistant, low in hardness and viscous, gives moldings having smooth surfaces and exhibits controlled oil bleed and a heat conductive material based on the urethane-based resin material. <P>SOLUTION: The urethane-based resin material is a blend of 75-300 pts.wt. of an olefinic oil and 1.5-225 pts.wt. of a liquid antioxidant to 175 pts.wt. of a polyurethane. Preferably, the liquid antioxidant is a hindered phenol-based antioxidant with a melting temperature of ≤10°C. More specifically, use of benzene propanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-alkylester having 7-9C side chains is recommended. The heat conductive material is obtained by mixing 180-580 pts.wt. of a heat conductive filler with 100 pts.wt. of the urethane-based resin material. <P>COPYRIGHT: (C)2007,JPO&INPIT |
