Patent ID: 6326425
Filing Date: 2001-12-04
Classification: C08L

Abstract:
A flame retardant resin composition comprising:(A) 100 parts by weight of a synthetic resin containing aromatic rings in a molecule, and(B) 0.1 to 10 parts by weight of an organopolysiloxane containing phenyl radicals as essential substituents attached to silicon atoms and siloxane units represented by R.sup.1 R.sup.2 R.sup.3 SiO.sub.1/2 wherein R.sup.1, R.sup.2, and R.sup.3 are independently selected from substituted or unsubstituted monovalent hydrocarbon radicals of 1 to 6 carbon atoms, the contents of alkoxy radicals and hydroxyl radicals available as Si--OH radicals in a molecule each being less than 2% by weight, wherein the residual alkoxy radicals are secondary or tertiary alkoxy radicals of 3 to 6 carbon atoms or both, said organopolysiloxane being represented by(C.sub.6 H.sub.5).sub.m R.sub.n Si(OR').sub.p (OH).sub.q O.sub.(4-m-n-p-q)/ 2 (1)wherein R stands for substituted or unsubstituted monovalent hydrocarbon radicals of 1 to 6 carbon atoms other than phenyl and alkoxy, R' stands for secondary or tertiary alkyl radical of 3 to 6 carbon atoms, and the letters m, n, p, and q are numbers satisfying: 0.5.ltoreq.m.ltoreq.2.0, 0.1.ltoreq.n.ltoreq.2.3, 0<p.ltoreq.0.13, 0.ltoreq.q.ltoreq.0.17, and 0.92.ltoreq.m+n+p+q.ltoreq.2.85, and said organopolysiloxane having a weight average molecular weight of up to 2,000.