| 摘要 |
The present invention provides flame retardants which can provide high flame retardancy by means of silicon compounds. A flame retardant comprising an aromatic group-containing organosiloxane compound wherein said compound has the following mean composition formula (1), does not flow at 23 DEG C, flows at 200 DEG C, does not gelate when headed at 200 DEG C with stirring for 30 minutes, has a number average molecular weight of not less than 2,000 and at the same time, dissolves not less than 100 g in 1 L of a solvent toluene at 23 DEG C; R<1> mR<2> nSiO(4-m-n)/2 in the formula, R<1> represents a univalent aliphatic hydrocarbon group containing 1 to 4 carbon atoms; R<2> represents a univalent aromatic hydrocarbon group containing 6 to 24 carbon atoms; R<1> and R<2> each may contain two or more species; and m and n are numbers satisfying 1.1 </= m + n </= 1.7 and 0.4 </= n/m </= 2.5.
|
