Flame retardant composition
First Claim
1. A flame-retardant composition comprising from 20 to 95% by weight of (a) a polyphenylene ether resin having a number average molecular weight of 500 to 5,000, and from 80 to 5% by weight of (b) a phosphazene compoundwherein said phosphazene compound comprises a total of 95% by weight or more of a cyclic phosphazene compound represented by formula (1) and/or a straight chain phosphazene compound represented by formula (2):
3 Assignments
0 Petitions
Accused Products
Abstract
A flame-retardant composition comprises a polyphenylene ether resin having a number average molecular weight in terms of polystyrene of 500 to 5,000 and a phosphazene compound, the content of the polyphenylene ether being 20 to 95% by weight and that of the phosphazene compound being 80 to 5% by weight. The flame-retardant composition is excellent in processability when added to resins, and can provide a resin composition that contains no halogens and has an excellent balance of processability, heat resistance and flame retardancy.
-
Citations
16 Claims
-
1. A flame-retardant composition comprising from 20 to 95% by weight of (a) a polyphenylene ether resin having a number average molecular weight of 500 to 5,000, and from 80 to 5% by weight of (b) a phosphazene compound
wherein said phosphazene compound comprises a total of 95% by weight or more of a cyclic phosphazene compound represented by formula (1) and/or a straight chain phosphazene compound represented by formula (2):
- 6. A flame-retardant resin composition comprising a resin and a flame-retardant composition comprising from 20 to 95% by weight of (a) a polyphenylene ether resin having a number average molecular weight of 500 to 5,000, and from 80 to 5% by weight of (b) a phosphazene compound.
Specification