diameter of 10 u03bcm shown in table 1 were dry blended at 600 rpm for 1 minute by a henschel mixer 50 by mass of the blend and 50 by mass of a linear low density polyethylene lldpe trade name neozex2540r prime polymer were blended to obtain pellets in the same manner as in example 1 which obtained pellets were subject to injection molding to obtain a molded product the results of evaluating the molded product by the above mentioned methods are shown in table 1 consequently flame retardance is deteriorated and co occurrence amount is increased 50 by mass of aluminum hydroxide al oh 3 99 5 by mass na 2 o 0 25 by mass having an average particle diameter of 10 u03bcm and 50 by mass of a linear low density polyethylene lldpe trade name neozex2540r prime polymer shown in table 1 were blended to obtain pellets in the same manner as in example 1 which obtained pellets were subject to injection molding to obtain a molded product the results of evaluating the molded product by the above mentioned methods are shown in table 1 consequently flame retardance was deteriorated 50 by mass of a polyimide having an average particle diameter of 60 u03bcm and 50 by mass of a linear low density polyethylene lldpe trade name neozex prime polymer.